Title:
車両用照明装置
Document Type and Number:
Japanese Patent JP7185129
Kind Code:
B2
Abstract:
[Problem] To provide a vehicle illumination device which lights both an LED and a bulb, and which does not cause the brightness of the bulb to flicker. [Solution] If an LED is connected to a vehicle illumination device (10), a second transistor (Q2) of a determination current limiter (30) is turned on, and the voltage of a constant voltage power source circuit (V1) is applied to a load (LED) (R1). If a bulb is connected to the vehicle illumination device (10), the voltage of a battery (V4) is applied to the load (bulb) (R1) from a MOSFET that is subjected to PWM control by means of a PWM control circuit (20). The brightness of the load (bulb) (R1) is maintained at a constant value.
More Like This:
| JP2009047560 | MEASURING INSTRUMENT DEVICE |
| JP6872147 | Instrument |
| JPH0610975 | [Name of invention] Liquid crystal display device |
Inventors:
Koichi Yamanoue
Naofumi Hisamoto
Naofumi Hisamoto
Application Number:
JP2018116722A
Publication Date:
December 07, 2022
Filing Date:
June 20, 2018
Export Citation:
Assignee:
Imasen Electric Manufacturing Co., Ltd.
International Classes:
B60K35/00; B60Q1/26; B60Q1/44; B60Q3/16; G01D11/28
Domestic Patent References:
| JP2017136895A | ||||
| JP2003178893A | ||||
| JP2007196957A | ||||
| JP56075040U | ||||
| JP2015020460A | ||||
| JP2005231429A |
Attorney, Agent or Firm:
Akito Tagashita
Katsuhiko Tateishi
Katsuhiko Tateishi
Previous Patent: GAME DEVICE, PROGRAM, RECORDING MEDIUM, GAME DEVICE CONTROL METHOD
Next Patent: HAND-CARRY TYPE IMAGE DISPLAY APPARATUS
Next Patent: HAND-CARRY TYPE IMAGE DISPLAY APPARATUS