Title:
LED ILLUMINATION LAMP
Document Type and Number:
Japanese Patent JP2015076265
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an LED illumination lamp capable of suppressing continuous generation of conduction failure of LED chips.SOLUTION: The LED illumination lamp includes: a plurality of LED units 2 each of which includes a plurality of LED chips 22a connected in series and which are connected in parallel with each other; a long cylindrical translucent cover for storing the plurality of LED units 2 and transmitting light beams from the plurality of LED units 2 while dispersing the light beams; a control part 35 to be brockage means which when at least any one of the plurality of LED units 2 becomes lighting failure, blocks power supply to the LED units 2 other than the LED unit 2 becoming lighting failure; and an internal illumination sensor 41.
Inventors:
IGAKI MASARU
Application Number:
JP2013211751A
Publication Date:
April 20, 2015
Filing Date:
October 09, 2013
Export Citation:
Assignee:
ROHM CO LTD
International Classes:
H05B37/02; F21S2/00; F21V19/00; F21V23/00; F21V25/00; F21V25/04
Attorney, Agent or Firm:
Minoru Yoshida
Tatsuya Tanaka
Tsukasa Senba
Yasumitsu Suzuki
Nao Usui
Fumiaki Doi
Shintaro Suzuki
Keita Kobuchi
Tatsuya Tanaka
Tsukasa Senba
Yasumitsu Suzuki
Nao Usui
Fumiaki Doi
Shintaro Suzuki
Keita Kobuchi