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Title:
RECHARGEABLE SOLAR LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/096366
Kind Code:
A1
Abstract:
The invention relates to rechargeable solar lighting device (10) comprising at least one solar unit (12) for receiving energy, which has at least one solar cell (14); at least one lighting unit (16) powered by the solar unit (12) and having at least one lighting element (18) for emitting light; and at least one housing unit (20). It is proposed that the housing unit (20) at least partly accommodates the solar unit (12) and the lighting unit (16).

Inventors:
SCHOLTZ KOBUS (ZA)
GEEL GERRY (ZA)
BOTHA MARITZ (ZA)
LONG CLIVE (ZA)
Application Number:
EP2017/079141
Publication Date:
May 23, 2019
Filing Date:
November 14, 2017
Export Citation:
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Assignee:
BOSCH GMBH ROBERT (DE)
International Classes:
F21S8/00; F21S9/03
Domestic Patent References:
WO2001039279A12001-05-31
Foreign References:
US20100109556A12010-05-06
JPH11175014A1999-07-02
US9080736B12015-07-14
Other References:
None
Download PDF:
Claims:
Claims

1. Rechargeable solar lighting device (10) comprising at least one solar unit (12) for receiving energy, which has at least one solar cell (14); at least one lighting unit (16) powered by the solar unit (12) and having at least one lighting element (18) for emitting light; and at least one housing unit (20), characterized in that the housing unit (20) at least partly accommo dates the solar unit (12) and the lighting unit (16).

2. Rechargeable solar lighting device according to claim 1, characterized in that the housing unit (20) comprises at least one transparent cover (22) shared by the at least one solar cell (14) and the at least one lighting ele ment (18).

3. Rechargeable solar lighting device according to claim 1 or claim 2, characterized in that the solar cell (14) and the lighting element (18) face in the same direction.

4. Rechargeable solar lighting device according to any one of the preceding claims, characterized in that, viewed in a direction of light emittance of the lighting element (18), the lighting element (18) is arranged spatially in front of the solar cell (14).

5. Rechargeable solar lighting device according to any one of the preceding claims, characterized by at least one electronics unit (24) comprising at least one circuit board (26), wherein the lighting element (18) is arranged spatially between the circuit board (26) and the solar cell (14).

6. Rechargeable solar lighting device according to any one of the preceding claims, characterized in that the lighting unit (16) is configured for multi color light emittance.

7. Rechargeable solar lighting device according to any one of the preceding claims, characterized in that the lighting unit (16) has an output of at least 100 Im

8. Rechargeable solar lighting device according to any one of the preceding claims, characterized in that the solar unit (12) comprises an energy storage (28) configured to store at least 10 Wh when fully charged.

9. Rechargeable solar lighting device according to any one of the preceding claims, characterized in that the cover (22) is at least partly made of a thermoplastic polymer.

10. Rechargeable solar lighting device according to any one of the preceding claims, characterized in that the housing unit (20)comprises at least one baseplate (30) corresponding to the cover (22), wherein the baseplate (30) is at least partly made of metal.

11. Rechargeable solar lighting device according to any one of the preceding claims, characterized by at least one receiver (32) for receiving a remote control signal for controlling at least the lighting unit (16).

12. Solar lighting system comprising at least one rechargeable solar lighting device (10) according to anyone of the preceding claims; and comprising at least one remote control device (34) for controlling the rechargeable so lar lighting device (10).

Description:
Specification

Rechargeable solar lighting device

Background of the invention

From the prior art a rechargeable solar lighting device comprising at least one solar unit for receiving energy, which has at least one solar cell; at least one light ing unit powered by the solar unit and having at least one lighting element for emitting light; and at least one housing unit is already known.

Disclosure of the invention

The invention relates to a rechargeable solar lighting device comprising at least one solar unit for receiving energy, which has at least one solar cell; at least one lighting unit powered by the solar unit and having at least one lighting element for emitting light; and at least one housing unit.

It is proposed that the housing unit at least partly, preferably at least mostly and advantageously entirely accommodates the solar unit and the lighting unit. The solar unit comprises in particular at least one solar cell. Furthermore, it is con ceivable that the solar unit comprises a plurality of solar cells, which may be elec trically connected to each other in parallel and/or in series. The lighting unit com prises at least one lighting element. Furthermore, it may be conceivable that the lighting unit comprises a plurality of lighting elements, which may be electrically connected to each other in series and/or in parallel. The lighting element may be implemented as an LED, as an OLED or the like. The lighting unit is in particular configured for a flash mode. In this context,“configured” is in particular to mean specifically programmed, designed and/or equipped. By an object being config ured for a certain function is in particular to be understood that the object imple ments and/or fulfills said certain function in at least one application state and/or operating state. By means of the invention in particular a compact and robustly designed rechargeable solar lighting device can be provided.

Furthermore, it is proposed that the housing unit comprises at least one transpar ent cover shared by the at least one solar cell and the at least one lighting ele ment. As a result of this in particular a compactness of the rechargeable solar lighting device can be improved. In particular, the solar unit and/or the lighting unit are preferably at least partly and advantageously entirely arranged inside the transparent cover of the housing unit. It may be conceivable that the transparent cover is at least partly colored in red, blue, green and/or amber. Advantageously the transparent cover is free of any coloring.

In addition, it is proposed that the solar cell and the lighting element face in the same direction. In particular, viewed in a direction of light emittance of the lighting element, the lighting element is arranged spatially in front of the solar cell. This in particular allows improving a compactness of the rechargeable solar lighting de vice. In particular, due to the special arrangement of the solar cell with respect to the lighting element at least a portion of the light emitted by the lighting element is blocked by the solar cell before it is transmitted through the transparent cover. Preferably, viewed in a direction of light emittance of the lighting unit, the lighting unit is at least partly, preferably at least mostly and advantageously entirely ar ranged spatially in front of the solar unit.

It is also proposed that the rechargeable solar lighting device comprises at least one electronics unit comprising at least one circuit board, wherein the lighting element is arranged spatially between the circuit board and the solar cell. This in particular allows achieving an advantageously compact design. In particular, the circuit board is configured for surface-mounting. Preferably the lighting unit is at least partly, preferably at least mostly and advantageously entirely arranged spa tially between the electronics unit and the solar unit. Preferably at least the light ing element of the lighting unit and preferably the lighting unit is/are surface- mounted onto the circuit board. In particular, the circuit board is implemented as a printed circuit board. It is also proposed that the lighting unit is configured for multicolor light emittance. As a result of this, in particular a visibility and/or a capability of displaying a warn ing information can be improved. In particular for multicolor light emittance the lighting unit may comprise at least one multicolor lighting element. Alternatively the lighting unit may comprise a plurality of lighting elements having different col ors. Preferably the lighting unit is configured to emit RGB-color light such as white, red, blue, green and/or amber.

Further, it is proposed that the lighting unit has an output of at least 100 Im, pref erably at least 300 Im, especially preferably at least 400 Im and advantageously 500 Im. As a result of this, in particular a visibility may be further improved.

In addition, it is proposed that the solar unit comprises an energy storage config ured to store at least 10 Wh, preferably at least 20 Wh and advantageously at least 50 Wh when fully charged. As a result of this, a displaying time of infor mation, in particular a warning signal, may be improved. In particular it is achiev able that the solar storage device only needs to be charged once every 60 days for five hours.

In addition, it is proposed that the cover is at least partly, preferably at least most ly and advantageously entirely made of a thermoplastic polymer. In particular the cover is at least partly, preferably at least mostly and advantageously entirely made of a highly durable acrylic glass, preferably such as Plexiglas ® , in particular Plexiglas ® zk6BR 80) This allows improving a durability of the rechargeable solar lighting device.

In addition, it is proposed that the housing comprises at least one baseplate cor responding to the cover, wherein the baseplate is at least partly, preferably at least mostly and advantageously entirely made of metal. Advantageously the cover is made at least partly, preferably at least mostly and advantageously en tirely of aluminum and/or an aluminum alloy. As a result of this a durability of the rechargeable solar lighting device may be further improved.

In addition, it is proposed that the rechargeable solar lighting device comprises at least one receiver for receiving a remote control signal for controlling at least the lighting unit. In particular a color and/or a lighting duration of the lighting unit may be remotely controlled. As a result of this in particular an operability of the re chargeable solar lighting device can be improved.

Furthermore a solar lighting system is proposed, comprising at least one, prefer ably at least two and advantageously a plurality of rechargeable solar lighting device/devices and comprising at least one, preferably at least two and advanta geously a plurality of remote control device/devices for controlling the rechargea ble solar lighting device. The remote control device comprises in particular differ ently colored buttons, which are allocated to respectively requested colors of the lighting unit of the rechargeable solar lighting device. By means of the invention in particular a compact and robustly designed rechargeable solar lighting device can be provided.

Herein the rechargeable solar lighting device and/or the solar lighting system are not to be limited to the application and implementation described above. In par ticular, for the purpose of fulfilling a functionality herein described, the rechargea ble solar lighting device and/or the solar lighting system may comprise a number of respective elements, structural components and units that differs from the number mentioned herein. Furthermore, regarding the value ranges mentioned in this disclosure, values within the limits mentioned are to be understood to be also disclosed and to be used as applicable.

Drawings

Further advantages may become apparent from the following description of the drawing. In the drawing an exemplary embodiment of the invention is shown. The drawing, the description and the claims contain a plurality of features in combina tion. The person having ordinary skill in the art will purposefully also consider the features separately and will find further expedient combinations. It is shown in:

Fig. 1 a solar lighting system, having a rechargeable solar lighting device and remote control device in a perspective view, and

Fig. 2 the rechargeable solar lighting device in an exploded view.

Description of the exemplary embodiment

Fig. 1 shows a solar lighting system in a perspective view. The solar lighting sys tem comprises at least one rechargeable solar lighting device 10. While in the present embodiment of the solar lighting system one rechargeable solar lighting device 10 is shown in Fig. 1, the solar lighting system may comprise a plurality of rechargeable solar lighting devices 10.

Furthermore the solar lighting system comprises at least one remote control de vice 34. The remote control device 34 is configured for a remote control of the rechargeable solar lighting device 10. The remote control device 34 comprises buttons 36. The buttons 36 are colored in respective colors requested for a light ing unit 16 of the rechargeable solar lighting device 10.

Fig. 2 shows the rechargeable solar lighting device 10 in an exploded view.

The rechargeable solar lighting device 10 comprises at least one housing unit 20. The housing unit 20 comprises at least one transparent cover 22. The cover 22 is at least partly made of a thermoplastic polymer. In the present embodiment the transparent cover is made of highly durable acrylic glass, in particular such as Plexiglas ® , in particular Plexiglas ® zk6BR 80. Although in the present embodi ment the transparent cover 22 is free of any coloring, it is conceivable to color the cover 22.

The housing unit 20 comprises at least one baseplate 30. The baseplate 30 cor responds to the cover 22. The baseplate 30 is at least partly made of metal. In the present embodiment the baseplate 30 is at least partly made of aluminum or an aluminum alloy. The transparent cover 22 is connectable to the baseplate 30, for example by screws. The rechargeable solar lighting device 10 comprises at least one electronics unit 24. The electronics unit 24 comprises at least one circuit board 26. The circuit board 26 is implemented as printed circuit board. The circuit board 26 is connect ed to the baseplate 30 of the housing unit 20.

The rechargeable solar lighting device 10 comprises at least one receiver 32. The receiver 32 is configured for receiving a remote control signal for controlling fur ther components of the rechargeable solar lighting device 10. The receiver 32 is mounted, preferably surface-mounted, to the circuit board 26 of the electronics unit 24.

The rechargeable solar lighting device 10 comprises at least one solar unit 12. The housing unit 20 accommodates the entire solar unit 12. The solar unit 12 is configured for receiving energy. The solar unit 12 comprises at least one solar cell 14. The baseplate 30 comprises feet 38 which the solar cell 14 is mounted onto. The solar unit 12 comprises an energy storage 28. The energy storage 18 is configured to store at least 10 Wh when fully charged. The solar unit 12 is elec tronically connected to the circuit board 16.

The rechargeable solar lighting device 10 comprises the at least one lighting unit 16. The housing unit 20 accommodates the entire lighting unit 16. The lighting unit 16 is powered by the solar unit 12. The lighting unit 16 comprises at least one lighting element 18 for emitting light. The lighting unit 16 is configured for multicolor light emittance. In this regard, the lighting element 18 may be imple mented as a multicolor lighting element. For example, the light element 16 may be configured to emit white, red, green, blue and/or amber light if requested. Al ternatively or additionally the lighting unit 16 may comprise multiple lighting ele ments 16 having different colors, in particular such as white, red, green, blue and/or amber. The lighting unit 16 has an output of at least 100 Im. In the present embodiment the lighting unit has an output of 500 Im. The solar cell 14 and the lighting element 18 face in the same direction. Viewed in a direction of light emit tance of the lighting element 18, the lighting element 18 is arranged spatially in front of the solar cell 14.The lighting element 18 is arranged spatially between the circuit board 16 and the solar cell 14. In a mounted state of the housing unit 20 is shared by the at least one solar cell 14 and the at least one lighting element 18. In the present embodiment the trans parent cover 22 is shared by the entire solar unit 12 and the entire lighting unit 16.