Title:
LIGHT-EMITTING DIODE TYPE SIGNAL LIGHT MACHINE
Document Type and Number:
Japanese Patent JP2005285532
Kind Code:
A
Abstract:
To provide an LED type signal lamp unit so made to endow an LED display board with a heat radiating effect and improve a life and the reliability of an LED.
The LED type signal lamp unit 10 is provided with an LED (a light-emitting diode) display board emitting lamp light for signalling by rectifying a commercial power source P. On the LED display board 20, heat generated at the LED is made to radiate by transmitting it to a soldering pattern 22 by arraying a soldering face pattern 22 of a printed board 21 so as to spread more widely over the board face than a necessary line width, and by making the soldering face pattern 22 without a resist 25.
Inventors:
IKEDA KENJI
IKEMURA YUJI
IKEMURA YUJI
Application Number:
JP2004097344A
Publication Date:
October 13, 2005
Filing Date:
March 30, 2004
Export Citation:
Assignee:
KOITO KOGYO KK
International Classes:
F21V29/00; F21S2/00; G08G1/095; F21Y101/02; (IPC1-7): F21V29/00; F21S2/00; G08G1/095
Attorney, Agent or Firm:
Hiroki Sasai