Title:
LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2017183221
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device capable of ensuring heat dissipation and insulation properties of an LED module with a simple structure.SOLUTION: A lighting device 1 includes: an LED module 3 in which an LED element is mounted on an LED substrate; a power supply circuit unit 5 in which a plurality of circuit components are mounted on a circuit board, and which supplies electric power to the LED element; and an envelope which accommodates the LED module 3 and the power supply circuit unit 5 therein. The envelope at least includes: a cylindrical body 73 which is made of resin and is provided on the outer periphery thereof with a fin part 732 for heat dissipation; a translucent cover 71 which is provided in one end side of the cylindrical body 73; and a mouthpiece 77 which is provided on the other end side of the cylindrical body 73. The cylindrical body 73 has a metallic shell 74 having a circular cross section in its inner peripheral surface. The LED module 3 and the power supply circuit unit 5 are fixed to the cylindrical body 73 in the state of not contacting a shell 74.SELECTED DRAWING: Figure 3
Inventors:
OGATA DAISUKE
AKIMOTO TAKUZO
AKIMOTO TAKUZO
Application Number:
JP2016072545A
Publication Date:
October 05, 2017
Filing Date:
March 31, 2016
Export Citation:
Assignee:
IRIS OHYAMA INC
International Classes:
F21K9/232; F21K9/00; F21K9/237; F21K9/238; F21V29/503; F21V29/507; F21V29/508; F21V29/77; H01L33/00
Attorney, Agent or Firm:
Junji Harada
Yuji Okuyama
Yuji Okuyama