Title:
HEAD-UP DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/191268
Kind Code:
A1
Abstract:
The present invention increases ease of assembly for a lighting device. A lighting device 23 of a head-up display device 20 includes a plurality of light sources 31 used for transmissive illumination of a display device 21 that displays information, a circuit board 33 on which the plurality of light sources 31 are mounted, and a heatsink 35 overlaid onto a back surface 33b of the circuit board 33. The heatsink 35 includes a sink surface 41c joined to the back surface 33b of the circuit board 33 via a thermal paste 34. The sink surface 41c has a recess 71 that is recessed in the direction going away from the back surface 33b at a location where an edge 33c of the circuit board 33 is positioned.
Inventors:
SATOH MASAO
SATO GENICHIRO
TSURUMARU TOSHIRO
SATO GENICHIRO
TSURUMARU TOSHIRO
Application Number:
PCT/JP2022/010476
Publication Date:
September 15, 2022
Filing Date:
March 10, 2022
Export Citation:
Assignee:
NIPPON SEIKI CO LTD (JP)
International Classes:
B60K35/00; F21S2/00; F21V5/00; F21V19/00; F21V29/503; F21V29/76; G02B27/01; H01L23/40
Foreign References:
| JP2018137089A | 2018-08-30 | |||
| JP2004006096A | 2004-01-08 | |||
| JP2005136197A | 2005-05-26 | |||
| JP2012033523A | 2012-02-16 |
Download PDF: