Title:
IN-VEHICLE ILLUMINATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/235127
Kind Code:
A1
Abstract:
A bridge circuit (22) comprises: a first light emitting element group (102, 110) and a second light emitting element group (103, 120), which are connected in series; and a pair of comparison resistors (201, 202) that generate a voltage (Vref) equal to a voltage (VLED) at a connection point between the light emitting element groups, said comparison resistors being connected in series. Transistors (301, 302) are connected to the connection point between the first light emitting element group (102, 110) and the second light emitting element group (103, 120), and to a connection point between the comparison resistors (201, 202), and operate when the first light emitting element group (102, 110) or the second light emitting element group (103, 120) is short-circuited.
Inventors:
INOUE YU (JP)
Application Number:
PCT/JP2017/022518
Publication Date:
December 27, 2018
Filing Date:
June 19, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B60Q1/04; H05B44/00; B60Q1/34; B60Q1/44; B60Q11/00; G01R31/26; H01L33/00; H05B37/02; H05B37/03
Foreign References:
| JP2014519013A | 2014-08-07 | |||
| JP2010278039A | 2010-12-09 | |||
| JP2014154294A | 2014-08-25 |
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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