Title:
車両用ランプ
Document Type and Number:
Japanese Patent JP7360874
Kind Code:
B2
Abstract:
To provide a vehicle lamp in which the structures of a plurality of light emitting segments and a light emitting circuit can be simplified.SOLUTION: A vehicle lamp includes: a plurality of light emitting segments SG1-SG9 each including an organic light emitting element 32; and a light emission control unit 4 to control the light emission of the light emitting segments SG1-SG9. Each of the light emitting segments SG1-SG9 includes an anode 31, an organic light emitting element 32 and a cathode 33 which are laminated on a light transmitting substrate 5. The anode 31 of one light emitting segment is electrically connected to cathodes 33 of other light emitting segments SG1-SG9. The light emission control unit 4 includes: a current source 41 passing current through the light emitting segments SG1-SG9 connected in series; and a switching circuit 42 having a plurality of switches S1-S9 connected to the light emitting segments SG1-SG9 in parallel, respectively.SELECTED DRAWING: Figure 5
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Inventors:
Masaya Shito
Application Number:
JP2019174869A
Publication Date:
October 13, 2023
Filing Date:
September 26, 2019
Export Citation:
Assignee:
Koito Manufacturing Co., Ltd.
International Classes:
H05B45/48; B60Q1/34; B60Q1/44; F21S43/145; H05B33/12; H05B33/22; H05B33/26; H05B33/28; H05B47/10; H10K50/10
Domestic Patent References:
| JP2009181752A | ||||
| JP2008227404A | ||||
| JP3066585U | ||||
| JP2013516735A |
Foreign References:
| WO2018047915A1 |
Attorney, Agent or Firm:
Suzuki Akio