Title:
LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2018152228
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device which enables improvement of heat radiation performance achieved by a radiator.SOLUTION: A lighting device 10 includes a light emitting module 16 and a radiator 12. The radiator 12 has a heat transfer part 61, a peripheral wall part 62, multiple fins 63, and a ventilation opening 73. Heat from the light emitting module 16 is transmitted to the heat transfer part 61. The peripheral wall part 62 is disposed above a periphery of the heat transfer part 61, opens vertically, and is provided in a cylindrical shape in which its diameter reduces from the lower end side to the upper end side. The multiple fins 63 connect the heat transfer part 61 to the peripheral wall part 62. The ventilation opening 73 is provided between the heat transfer part 61 and the lower end side of the peripheral wall part 62.SELECTED DRAWING: Figure 1
Inventors:
KIKA MANABU
Application Number:
JP2017047316A
Publication Date:
September 27, 2018
Filing Date:
March 13, 2017
Export Citation:
Assignee:
TOSHIBA LIGHTING & TECHNOLOGY
International Classes:
F21V29/503; F21S8/02; F21V29/51; F21V29/77; F21V29/83
Attorney, Agent or Firm:
樺澤 襄
Satoshi Kabazawa
Tetsuya Yamada
Satoshi Kabazawa
Tetsuya Yamada