Title:
HEAD-UP DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/150957
Kind Code:
A1
Abstract:
The objective of the present invention is to efficiently dissipate heat generated by a plurality of light sources which generate light having different wavelengths. This head-up display device is provided with: a combined light output unit (10) which outputs combined light obtained by combining light emitted by a plurality of light sources (11) which emit light having different wavelengths; and a heat dissipator (15) which dissipates heat emitted by the light sources (11). The head-up display device displays a virtual image by means of the combined light. The plurality of light sources (11) include a first light source (11a) which operates in a first operation guaranteed temperature band, and second light sources (11b, 11c) which operate in a second operation guaranteed temperature band having an upper limit higher than that of the first operation guaranteed temperature band. The first light source (11a) is provided in a location (15a) on the heat dissipator (15) having a higher heat dissipation characteristic than the locations of the second light sources (11b, 11c).
Inventors:
YAMAYA SHUICHI
Application Number:
PCT/JP2018/004045
Publication Date:
August 23, 2018
Filing Date:
February 06, 2018
Export Citation:
Assignee:
NIPPON SEIKI CO LTD (JP)
International Classes:
G02B27/01; B60K35/00; G03B21/16; H01S5/024
Domestic Patent References:
| WO2016063540A1 | 2016-04-28 |
Foreign References:
| JP2016164922A | 2016-09-08 | |||
| JP2016051802A | 2016-04-11 | |||
| JP2011171535A | 2011-09-01 | |||
| JP2014085657A | 2014-05-12 |
Other References:
See also references of EP 3584626A4
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