COMPRISING A THERMAL, MECHANICAL AND ELECTRICAL INTERFACE

Technical Field

This invention generally relates to the art of constructing light fixtures equipped with high brightness light sources, i.e.: "Compact LED light bulbs", with a standardized structure, will replace traditional incandescent light bulbs. This invention falls into the field of lighting technology and its solutions are designed for general lighting applications.

The Current State of the Technology

It has been more than one hundred and thirty years since humanity began using electricity powered light sources. Edison light bulbs were introduced first, followed by arc lamps, neon tubes, fluorescent lamps or bulbs and later lamps filled with different gases. In the late seventies, saving discharging compact lamps were added to the portfolio of light sources, which were miniaturized and improved by modern switching electronic drivers. Last year, the European Union started a progressive ban of traditional filament bulbs. It was decided that by the end of 2009, the sale of 100-watt incandescent light bulbs, followed by 75-watt bulbs would be slowly withdrawn from the market. By 2012, stores would be prohibited from selling all types of classical filament lamps, with the exception of small bulbs up-to 35 W. This decision, however, will have an impact on consumers, who, for years, have been accustomed to using warm tones and radiation characteristics of traditional sources. The market has offered for a longer time a variety of alternatives or substitutes, but they do not provide the comfort and hygien-optical properties of the traditional filament lamps. The major disadvantage of the filament lamp is its limited efficiency and short life. Only 8% of the supplied electric energy is converted into light, 92% of that energy is converted into heat, which is a waste byproduct.

There exists alternatives such as halogen lamps but these lamps are more suitable to work as task or point light sources.

On the market, there is also a wide offering of CFL compact fluorescent lamps that try to emulate characteristics of traditional filament lamps. Their advantage is a very low power consumption and the fact that they fit easily in to the existing lamp holders; but, such energy-saving lamps also have serious physical disadvantages. Of these, it is worth mentioning that the disadvantages include, low color rendering index (CRI) - color fidelity of the illuminated object, emission of harmful UV radiation, the presence of toxic mercury, relatively short life in places with frequent switching, a tendency to overheat in the enclosed fixtures, they emit electromagnetic smog because they operate on the principle of discharging excited high-voltage pulses, etc. The public has long been reluctant to buy CFL bulbs, not just because of the high price, but also because of the not too convincing characteristics described above. Now with the EU regulation in force, the ever increasing price of electricity, and the environmental consciousness of the public, more people are considering the use of alternative light sources. However, using these lamps require the conusmer to make significant compromises.

With regard to the standards of the EU, it is almost certain that a feasible alternative for future illumination appears to be lamps based on semiconductor HB (High Brightness) LEDs. Current LED-based technology has already penetrated a variety of niche lighting applications, the largest application being architectural lighting, where the ability of LEDs to provide colors and color-changing effects was a major market driver. ^" Only gradually are they being introduced into the field of general lighting. Their low popularity was caused mainly by the efficiency and performance of LEDs which were still insufficient for general lighting when compared to traditional light sources. However, the development has progressed and LEDs with very high performances are coming on the market with improved parameters that are not inferior to traditional competitors such as traditional filament bulbs or CFL energy saving fluorescent lamps. Indeed, these new sources start to outperform the old, traditional light sources in many aspects. That is, in extremely low power consumption, high efficiency in converting electricity to light, (Watt /lumen conversion), color rendering index, size, design variability, by speed of switching frequency, palette of colors, wide variety of electronic control, durability, designs for low voltages, and the possibility of a combination with solar technologies, etc. Unfortunately, an HB LED diode also has one very serious drawback. This drawback is great sensitivity to the operating temperature, which must be strictly controlled for proper, long-term operation. For HB LEDs, it is necessary to conduct the excess heat away, quickly and efficiently. Currently, the market offers a relatively large number of lights equipped by LEDs but most of them are designed for decorative lighting, spot lighting, table lamps, bed reading lamps, wallwashers for illuminating building facades or waterproof LED lamps illuminating decorative color fountains, etc. All of these sources are usually specially designed lamps that are not suitable for production in large volumes or for sale on the mass market for general illumination purposes. These lamps are generally equipped by LEDs which are directly attached to the cooling element, fixed with screws or glued with heat conductive tape. The power supply cables are usually connected or soldered directly to the pins of the LED module. Such constructions are logical for single purpose solutions and constructions designed on measure, but they are very impractical and not economical for serial, mass production. Not to mention the complications with the after sale service, warranty or replacement of broken units after years.

Another category in the general lighting market are LED light bulbs which are offered for substituing classic incandescent bulbs. They have different sizes, different thread diameters and they are designed to fit into old lamps and sockets. Their advertised advantage of compatibility is also their major disadvantage. The mistake is that they are installed into old lamp holders that are not designed for these alternative light sources at all. Such bulbs are a combination of at least one LED chip, one cooling element intergrated directly into the light bulb and fitted by the driving electronic. Due to the limiting dimensions of such a LED bulb, the cooling element is too small to work at a high performance. The actual trend to integrate the cooling unit directly into the body of the LED bulb is restrictive, inefficient and impractical. Especially in the case of shaded lamps, they overheat quickly because the excess heat has nowhere to escape from the enclosed device. It is likely that these LED bulbs are only intermediate alternatives prior to the mass introduction of a more sophisticated LED technology into practice. In this way, the public has a period of time to amortise their existing lamps without an immediate need to invest in a new generation of lamps.

In summary, it can be concluded that the development of LED lighting today has been revolutionary, yet a bit chaotic. There are virtually no established standards and stable norms yet. For now, most manufacturers are promoting their own solutions. However, there already exists a strong effort to submit LED technology to a greater harmonization and standardization of designs and constructions. The logical consequence for the future is, to simplify the manufacturing process, unify the certification procedure, introduce a widely accepted and unified system for product identification for customers and achieve standards for their compatibility. These parameters are indispensible conditions for a rapid introduction of new LED products on the market.

Assembly line manufacturing of commercial LED lighting products requires simplicity and compatibility of spare parts. It is important that the components are standardized so, that they fit together with a simple movement and operation, like the manufacturing of old traditionally-produced light sources.

The above-mentioned deficiencies of today's existing alternative lights, as well as problems of existing LED lighting devices, evokes the realization of technologically different LED based lamps that do not exhibit the aforementioned drawbacks. It is about moving the modern LED technology toward a qualitatively higher level resulting in a quicker penetration into the market, thus getting it earlier to the stores and to customers. The goal of this project is to make a lamp construction which would not have dimension limits and a lamp that would not risk internal overheating although it would be tightly shielded.

The result of this effort is a compactly arranged lamp fixture assembled with a compact LED light bulb. The technical aspects of the invention is further described in this document.

The Purpose of the Invention

The shortcomings in existing LED lighting solutions are eliminated by a "compact arrangement of the fixture and the compact LED light bulb" according to this invention. It could be classified as an HB LED lamp that is a set of components, where two of them are essential for functionality and reliability. The first essential element is a LED module designed as a compact light bulb equipped by an HB LED chip. The second essential element is the lamp fixture itself consisting of a body - holder. The system contains other, but from the point of the invention, less essential standard mechanical and electrical components. Depending on the use and place of installation, the following components could be used: a transformer, electronically regulated power supply or pulse regulated power supply (PWM), shade, screws, ligaments, cablings, optical accessories and other mechanical and electrical interfaces serving the interconnection of the compact LED bulb and the compact lamp fixture.

The nature of the invention is that the lamp fixture and the compact LED bulb are connected through both mechanical and electrical interface and also through mechanical and thermal interface. The LED bulb is connected through a thermal bridge to the lamp holder functioning as a heat absorber-radiator for efficient conduction of the heat from the bulb towards the lamp holder's heat dissipating surfaces.

Thus, mechanical construction of the compact LED light bulb is suited for a simple, quick and reliable connection to the the mechanical, electrical and thermal interfaces. The compact LED light bulb itself includes at least one semiconductor LED chip module and/or optionally more structured LED units which are through the electrical, mechanical and thermal interface connected to the thermal bridge-body of the bulb. Some versions of such bulbs have the mechanical, thermal and electrical interface located on the bottom side of the bulb's body. Other versions, have the connector installed from the side (optionally also through the optical cover) of the bulb. The optical cover (shade) of the compact LED bulb is firmly fixed to the body of the thermal bridge. There are different types of acceptable optical covers, which can have various forms and can be fully transparent or partially transparent (crystal, frosted or milky glass). Compact LED ^; light bulbs are designed so that one side of the thermal bridge is fitted by the semiconductor LED chip module; the other side of the thermal bridge is used as the interface for the mechanical, thermal, and electrical connection. Some versions of the LED light bulbs could have the contact area from the side of the heat bridge of the compact LED lights. Further applications of the compact LED light bulb could be provided with mechanical handles, clamps and fixations. There could exist spherical constructions where at least one LED chip is mounted on a single or several planes and, like that, creating a spatial unit as a pyramid, cone, cylinder and so on.

From the electrical point of view, in some types of compact LED light bulbs, the embedded semiconductor chip LED module could be connected to a passive or active electrical or electronical component. These components may be a thermistor, resistor, diode, or another type of semiconductor, etc. A compact LED light bulb can be completed by a temperature sensor and/or light intensity sensor and/or at least one element protecting against harmful static electricity. Compact LED light bulbs can be fitted by both; the HB LED semiconductor chip module powered by a DC current or by LED chip modules powered by an AC current from the public grid (230 or 110V) without using an additional source.

Another essential component is the light holder itself, where the decorative shaped surfaces of the fixture serve as a cooler and radiator. They are conducting the surplus heat away from the compact LED light bulb. These two essential elements, the lamp holder and the LED light bulb can not work separately, only in symbiosis, because they are functionally dependant upon each other.

It is clear that the lamp holder's surface should have sufficient dimensions that would efficiently absorb and divert the excess heat away and dissipate it into the surrounding space. It consequently follows that it should be optionally manufactured from a good heat conducting metal like aluminum, copper or produced from other materials like recently developed modern, heat conducting plastic materials, by molding, pressing or by a spark erosion procedure. There could be lamp fixture alternatives which require additional cooler radiators fixed to the lamp. In such cases, the additional coolers would be shaped as radiators with a structured surface for easier heat dissipation.

The electrical connection, according to this invention, is made by standardized connectors where one part of the connector is fixed to the body of the light fixture, the counter part is integrated into the compact LED light bulb's body - heat bridge.

Some applications of the compactly arranged lamp fixtures assembled by compact LED light bulbs need to be equipped by additional power supplies which are an integral part of the light fixture. To ensure high parameters of the source, it is advantageous if the power supply works in constant current mode.

Advantages of a compactly arranged lamp fixture, assembled by a compact LED light bulb according to the invention, is based on a different technical solution of the lamp, whose technical features have not been previously merged in one final product. This is about a new philosophy, utilization, organization and shape of elements. The principle of the presented lighting system is based on a logical compilation of components whose physical properties and behaviors are taken into account. The appropriate choice of components and the reasonable design helped to get a modern and reliable product, plus a significantly less labor intensive manufacturing process. As a result, the presented construction is advantageous also from an economic point of view. In order to achieve compactness and standardization of the various components, it would seemed practical that the new type of light fixture equipped by integrated elements would be covered by names:„Compactly arranged light fixture" and "Compact LED light bulb". Such a complex illuminating set appears most appropriate for serial mass production, thus for sale through traditional channels of commerce. The aim was to design a practical product that would not need any qualified technician to install or replace bulbs, where even a regular customer would be able to change LED bulbs like a traditional filament or saving CFL bulb. The principle of a compact LED light bulb connected to a decoratively designed light holder, which functions also as a cooling element, is new and does not exist on the market. The construction of this LED technology essentially eliminates the negative thermal management barriers and significantly contributes to the easy manufacturing process. These are facts that previously prevented the spread of the LED lighting products into the general lighting market. The proposed technology is very variable, can be applied quickly in any kind of environment with the intended goal of rapidly spreading these products into households, offices, public places, simply everywhere that was previously dominated by the classical Edison type of bulb. This technology has undergone a serious test process that confirms that all of the involved components are very reliable. The conception of the compact light fixture and the compact LED light bulb technology has in fact no power or dimensional limits, thus it is really flexible, variable and scalable to higher light outputs in the order of thousands of lumens. The standardization and unification of LED components allows creating functional blocks, which would be used in different combinations. Then designers do not need to deal with technical aspects during the conception of new types of lamps. The proposed components would be marketable through existing stores and/or also sold to the manufacturers or integrators for assembling them into their own products. At present, the existing light products are powered directly from the grid or through so-called step down power supplies where, during the transformation process, more than 20-30% of energy is wasted. Because our new LED bulb is a low voltage and very economical system by its nature, it is highly suitable to integrate it into new lighting low voltage power grids. Like this, it is possible to save even yet more energy. The compact LED light bulb is the light of the future also because of its direct compatibility with massively progressing solar photovoltaic technology. With LED light bulbs and a couple of solar panels on the roof or the balcony, it is definitively possible to be completely independent from the public electrical network.

Summary of Drawings

The compact design of the complex light source according to this invention will be further presented by pictures. Fig. 1 displays the side perspective of the compact LED light bulb (1) and in a separate side perspective the light fixture (2) only. Fig. 2 shows the partial, sectional view from above the two forms of the compact LED light bulb; the first shows a circular base and the second the square base of the thermal bridge and the fixation by screws in the corners. Fig. 3 shows the light bulb which is fitted with a spherical, transparent or translucent cover and clamping elements for fast fixation. Fig. 4 shows the compactly arranged light fixture equipped by a compact LED bulb fitted by a pyramidal transparent or translucent cover. Fig. 5 shows a version with the rotating quick fastening device. Fig. 6 shows the compact LED bulb with horizontal connectors applied from the side. Fig. 7 shows the compact LED light bulb with a screw-in mounting, with a central, coaxially formed electrical connection and with a spherical, milky, crystal or frosted, bulb shaped cover. Fig. 8 shows a partially vertical layout of the cooling bridge fitted by one or more LED chip modules. Fig. 9 shows a side perspective of a friction slide-in LED light bulb with plug-in contacts. Fig.10 shows the friction slide-in LED light bulb from the top view. Fig.11 shows from above and from the side perspective the construction of the slide-in linear LED light bulb with friction plug-in contacts. Fig.12 shows from the side perspective the design of two different shaped ceiling lights equiped with compact LED light bulbs, where the lamp holder serves as the cooler element for dissipation of the excess heat from the bulbs. Fig.13 shows a wall mount lamp fixture equipped with a compact LED light bulb. Fig.14 shows the side perspective of a hanging lamp fitted with a compact LED bulb and ribbed cooling element. Fig.15 shows the side view of a dual hanging lamp fixture with disc-shaped cooling elements fitted by two compact LED bulbs. Fig.16 shows the side perspective of a ceiling lamp created from a disc-shaped plate which serves as a radiator, fitted by an additional cooler and a compact LED light bulb. The lamp is covered by a centrally fixed glass shade. Fig.17 shows the side of a chandelier lamp design, where the arms (usually brass or copper ) are functioning as cooling elements for heat dissipation, fitted by compact LED light bulbs. The bulb's covers are spherical with a crystal surface for creating omnidirectional light output. Fig.18 shows from the side and from above the design of a linear undercabinet light fixture equipped by linear slide-in compact light bulbs. Fig.19 shows a linear aluminum hanging lamp equipped with linear slide-in compact LED bulbs. Fig. 20 shows the design of a table lamp equipped with a ribbed cooler and compact LED light bulb.

It is necessary to take into account that the pictures presented above show only ideas and some possible design variations. These pictures are also not suppose to limit other alternative designs and constructions utilizing the presented technology of the compact LED light bulb working in symbiosis with the compact light fixture. For the purpose of this invention, it is important to understand that the term "compact" is seen in the meaning of individual construction concepts and their properties or combinations: integrated, condensed, simple, occupying a small area, containing the minimal neccesary elements for proper reliable functioning, optimized for specific features, easy to use, easy handling, compressed, solid, resistant, durable, combinable, simple outside but integrated from inside, user friendly, pro-easy manufacturing oriented.

Examples of the Realization of the Invention

Example 1

In Fig. 3 and 4, the basic construction and the arrangement of the compact light fixture and the compact LED light bulb are described. Only the light fixture 2 designed according to the invention and the LED light bulb constructed according to the invention are compatible. The compact LED light bulb 1 is connected through an electrical and mechanical interface 6 to the light fixture 2. But at the same time, the compact LED bulb 1 is connected to the light fixture 2 through a mechanical and thermal interface, where the light bulb 1 is equipped by the thermal bridge 3 which transfers the excess heat toward the lamp's heat dissipating surfaces 13 of the light fixture 2. This means that the mechanical and thermal interface is created by the heat conducting bridge 3 of the compact LED light bulb 1 and by the heat dissipating surfaces 13 of the light fixture 2. This is the basic philosophy and principle of the compactly arranged light fixture 2 and of the compact LED light bulb 1. From this basic description it is obvious the importance of this new concept of the light fixture 2. For the proper operation of the compact LED light bulb it is necessary that the excess and harmful heat created during the conversion of the electricity to the visible light would be transfered from the HB LED chip module 5 through the thermal bridge 3 into the lamp fixture 2 surfaces 13 which are simultaneusly serving as decorative elements of the lamp and also radiators of the excess heat. Alternatively, it is possible to join additional coolers 4 placed outside of the light beam of the luminaire 2.

The construction of the compact LED light bulb 1 is shown in Fig.1 and is characterized by containing a semiconductor LED chip module 5. It is obvious, that one compact LED light bulb 1 contains at least one LED chip module 5 and that module may contain a chip or chips with one and/or even hundreds of LED semiconductor diodes. The semiconductor LED chip module is electrically connected to the first part of the mechanical and electrical interface 6. The electrical and mechanical interface 6 is in this case embedded directly into the heat bridge 3 and is realized by coaxially shaped standardized connectors. To the internal pins of the connector are soldered electrical cables which are further connected to the pins of the semiconductor LED chip module 5 which is shown on the Fig. 2 and 3. For interconnection, standard thin copper cables are used. The semiconductor chip LED module 5 is appropriately attached or mounted to the inner surface of the heat bridge 3^ for example, by screws or heat conducting tape. To increase the efficiency of the heat transfer, it is useful to apply a heat conducting grease between contact surfaces. As it is shown in Fig. 2 the shape of the body of the thermal bridge could be in the form of a disc which is the most common solution. But in variant alternatives of the compact LED light bulb 1 the thermal bridge 3 could also have a flat rectangular shape with a square base optionally fixed by screws in the corners of the thermal bridge 3. In such a case the holes and screws in the thermal bridge are considered as the fixation grips 9. A linear compact LED light bulb 1 is fitted by a flat linear bar which serves as the thermal bridge 3 as it is shown in Fig.11. The used materials for heat bridges 3 should have a very high thermal conductivity. For this reason the best materials for this purpose are copper, aluminum, their alloys and eventually newly developed heat conducting plastic or ceramic materials. From the above descriptions it is obvious that from the other side of the thermal bridge 3 the electrical pins of the connector are accessible. The thermal bridge 3 also performs the function of the mechanical and thermal interface of the compact LED light bulb 1 because the outer side, in this case the lower side of the thermal bridge 3, has a contact surface 8 to dissipate the waste heat from the compact LED light bulb The thermal bridge 3 is fitted also by the optical cover 7 of the compact LED light bulb 1 The cover can be designed in a variety of shapes like bulbs, balls, spheres, or tubes and manufactured from glass or plastic. As it is shown in Fig. 4 alternative covers 7 of the compact LED light bulb 1 could also be designed as rectangular or pyramid shaped hollow bodies. The method of their mechanical attachment is given by the materials used. In the case of the metal and plastic bonding, the best procedure is gluing. Alternatively, it can be to the compact LED light 1 bulb and to the semiconductor LED chip module 5 connected at least one passive and/or passive electrical or electronical component. These components may be a transistor, diode, thermistor, resistor, capacitor, and so on. The compact LED light bulb 1 could also be fitted by a temperature sensor, optical sensor and by a protective element against harmful static electricity.

The second compatible element of the solution is the body of the lamp/light fixture itself 2, whose decorative surfaces 10 are functionnig as the heat absorbing surfaces 13 of the light fixture 2, which serves as a cooler for the evacuation of surplus heat from the compact LED light bulb 1 as it is whole and partly shown in Fig. 3 and 4. It is obvious that the surfaces 10 must be designed so that they would be able to dissipate the excess heat into the surroundings. It follows that they should be manufactured from a thicker metal by processes such as: pressing, molding and spark erosion procedures, from a material with very high heat conducting properties.

To ensure reliable heat dissipation from the compact LED light bulb 1 it is important that the thermal bridge 3 is tightly adjacent to the heat absorbing surfaces 13 of the light fixture 2. This is possible to achieve by a ring 12 with an external thread, fixed to the body 10 of the light fixture 2_and by a ring nut 14 with internal thread and surface which is adjacent with the thermal bridge 3_ as it is shown in Fig. 3 and 4. This solution serves the quick mounting of the compact LED light bulb1 on the compact lamp fixture 2.

The two essential components: the light fixture 2 and the compact LED light bulb

1 can not work separately, but exclusively in symbiosis, thus they are functionally dependant from each other. It is important to note that beside the lamp holder/lamp fixture

2 and the compact LED light bulb 1, for the complexity of the invention, the system also includes less essential components which are independently or in combination considered: the transformer, electronic control, pulse controlled power supply (PWM), decorative shade, screws, ligaments wiring and optical accessories, etc.

Example 2

In this example, the concrete realization is described in the second type of construction of the compactly arranged light fixture 2 and of the compact LED light bulb 1, according to this invention which is shown in Fig.5. The essential features were sufficiently described in the previous example already. The difference lies in the principle of the rotating quick fastening of the compact LED light bulb 1 to the the lamp surfaces 10 of the light fixture 2. In this case, the thermal bridge 3 is equipped by mechanical attachments 9, which are composed of two vertical pins. The fixation is secured by the locking unit H including the hole for the main power supply connector as it is shown in Fig.5.

Example 3

In this example, the concrete realization is describing the third type of construction of the compactly arranged light fixture 2 and of the compact LED bulb 1 according to this invention. The essential features were sufficiently described in the first example. The difference lies in the fact that the contact surface 8 for heat dissipation is provided from the side of the thermal bridge 3.

Example 4

In this example, the concrete realization is describing the fourth type of construction of the compactly arranged light fixture 2 and the compact LED bulb 1 according to this invention, which is shown in Fig.6. The essential features were sufficiently described in the first example. The difference lies in the fact that the mechanical and electrical interface 6 is realized by a standardized connector, where in this case is the connection realized outside of the thermal bridge 3, which means from the side of the compact LED light bulb 1. Example 5

In this example, the concrete realization is describing the fifth type of construction of the compactly arranged light fixture 2 and the compact LED bulb 1 according to this invention. The essential features were already sufficiently described in the first example. The difference lies in the fact that the mechanical fixation of the thermal bridge 3 is realized by a thread where the electrical interface 6 is from the bottom side as it is shown in Fig.7. This means that the thermal bridge 3 of the compact LED light bulb 1 is formed as a thread and the body 10 of the light fixture 2 is also appropriately threaded for the fixation of the bulb. Electrical contacts of the compact LED light bulb 1 are realized in the form of two separate and insulated circular segments.

Example 6

In this example, the concrete realization is describing the sixth type of construction of the compactly arranged light fixture 2 and the compact LED bulb 1 according to this invention, which is shown in Fig.8. The essential features were sufficiently described in the first example. The difference lies in the fact that the compact LED light bulb 1 contains four semiconductor LED chip modules 5 spatially arranged in the form of pyramids and fixed to the thermal bridge 3. This arrangement allows for a higher luminosity and wider beam angle of light.

Example 7

In this example, the concrete realization is describing the seventh type of structure and arrangement of the light fixture 2 and of the compact LED light bulb 1 according to this invention, which is shown in Fig. 9 and 10 from the top and side views of the sliding friction plug contacts. The essential features were sufficiently described in the first example. The difference in this construction lies in the fact that the mechanical and electrical interface 6 of the compact LED light bulb 1 is realized by a friction based, linearly sliding connector which has (in this case four) contact pins. The surface of the thermal bridge 3 of such a compact LED light bulb 1 is square shaped. In the body 10 of the light fixture 2 is embedded the opposite part of the connector with sliding friction contacts, also fitted by four contact pins. In particular, from Fig.10 it is obvious their mutual arrangement, where it is illustrated the direction of movement of the compact LED light bulb λ during the sliding onto the second part of the mechanical and electrical interface 6 embedded in the body 10 of the light fixture 2.Their mutually exact position is determined by an open frame. In Fig.10 the compact LED light bulb 1 is already functionally positioned and lined-up with the body 10 of the light fixture 2. An alternative design allows for mounting additional cooling radiators 4.

Example 8

In this example, the concrete realization is describing the eighth type of structure and arrangement of the light fixture 2 and the compact LED light bulb 1 according to this invention, which is shown in Fig.11 from the top and side views of sliding friction plug contacts. The essential features were sufficiently described in the first example. The difference of this construction lies in the fact that the mechanical and electrical interface 6 of the compact LED light bulb 1 is a linear light source fitted by a sliding friction connector with (four) connecting pins. The surface of the thermal bridge 3 of the compact LED light bulb 1 has in this case a rectangular form. In the body 10 of the light fixture 2 or alternatively in the body of the additional cooling element s is embedded the opposite part of the sliding friction connector also fitted by (four) contact pins. In this case, the linear compact LED light bulb 1 is inserted betweeen two parallely mounted rails which are placed from each side of the light bulb.

Example 9

In this example, the concrete realization is describing two concrete types of compactly arranged light fixtures 2 equipped by compact LED light bulbs I he principle of the invention is shown in Fig.12 on two different ceiling lamps. The top picture shows a ceiling lamp equipped by one compact LED light bulb 1, which is fitted by a spherical bulb cover. The body 10 of the light fixture 2 is made from a thicker sheet metal, formed as a radiator. Inside the body 10 of the light fixture 2 the power supply module is located. The body 10 of the light fixture 2 is covered from the front side by a semispherical decorative glass shade.

The bottom picture shows the other ceiling lamp equipped by two compact LED light bulbs 1, fitted also by spherical bulb covers.The body 10 of the ceiling lamp is formed as a radiator and is cut and formed from a thicker sheet metal. Inside the body 10 of the light fixture 2 is placed the power supply device. The body 10 of the lamp is covered by a deeper, transparent, hemispherical decorative glass shade.

Example 10

In this example, the concrete realization is describing the second type of structure and arrangement of the light fixture 2 and the compact LED light bulb 1 according to this invention, here is realized a wall-mount version and is shown in Fig.13. The elements and functions of this lamp have been sufficiently described in above texts and therefore no further description is needed.

Example 11

In this example, the concrete realization is describing the third type of structure and arrangement of the light fixture 2 and the compact LED light bulb 1_according to this invention, here is realized a hanging lamp and is shown in Fig.14. The elements and functions of this lamp have been sufficiently described in the above text. We highlight only the detail, where the thermal bridge 3 of the compact LED light bulb 1 is tightly adjacent to the body 10 of the light fixture 2 and is equipped by a heat sink 4.

Example 12

In this example, the concrete realization is describing the fourth type of structure and arrangement of the light fixture 2 and the compact LED light bulb 1 according to this invention, here is realized a hanging lamp and is shown in Fig.15. The elements and functions of this lamp have been sufficiently described in the above text. We highlight only a detail, where two compact LED light bulbs 1 are implemented and by their arrangement are able to work with an overall beam of 360°. The thermal bridge 3 of each compact LED light bulb 1 is adjacent to his own disc-shaped cooling plate 4 which is also the holder of the glass shade of the light fixture 2.

Example 13

In this example, the concrete realization is describing the fifth type of structure and arrangement of the light fixture 2 and the compact LED light bulb 1 according to this invention. Here is realized a hanging lamp and is shown in Fig.16. The elements and functions of this lamp have been sufficiently described in the above text. We highlight only a detail, where the thermal bridge 3 of the compact LED light bulb 1 is adjacent to the body 10 of the light fixture 2 fitted by the additional heat sink 4 .

Example 14

In this example, the concrete realization is describing the sixth type of structure and arrangement of the light fixture 2 and the compact LED light bulb 1 according to this invention. Here is realized a chandelier lamp and is shown in Fig.17. The elements and functions of this lamp have been sufficiently described in the above text. We highlight only a detail, that each of the lamps' fixture arms are fitted by compact LED light bulbs, where chandelier's very massive arms are serving as cooling elements 4.

Example 15

In this example, the concrete realization is describing the seventh type of structure and arrangement of the light fixture 2 and the compact LED light bulb 1 according to this invention. Here is designed a linear lamp equipped by a linear compact LED light bulb 1 and it is shown in Fig.18. The elements and functions of this lamp have been sufficiently described in Fig. 8. This lamp is designated as an undercabinet kitchen light to illuminate the kitchen worktop.

Example 16

In this example, the concrete realization is describing the eighth type of structure and arrangement of the light fixture 2 and the compact LED light bulb 1 according to this invention. Here is realized a thin linear lamp and is shown in Fig.19. The elements and functions of this lamp have been sufficiently described in Fig. 8. This lamp is suitable for replacing traditional neon lamps in offices, stores, public places but also in homes.

Example 17

In this example, the concrete realization is describing the ninth type of structure and arrangement of the light fixture 2 and the compact LED light bulb 1 according to this invention. Here is realized an office table lamp and is shown in Fig. 20. The elements and functions of this lamp have been sufficiently described in Fig. 11. This type of lamp essentially replaces filament or fluorescent lamps illuminating, particulary, office work tables.

Example 18

In this example, the concrete realization is describing a compact arrangement of the light fixture 2 and the compact LED light bulb, 1 according to this invention, which is compatible with any of previously described examples. The only difference is that the compact LED light bulb 1 can be fitted by a special semiconductor HB LED chip module 5 which would be driven directly from the main AC 230 grid without using an additional step-down power supply.

Industrial Applicability

The compact arrangement of the light fixture and the compact LED light bulb according to this invention, represents a usable technology in all areas of lighting. Thus, this presented technology can be applied quickly and seamlessly into any environment, with priority rapidly spreading mainly into the households and premises (spaces) where classical filament bulbs have been used.