Title:
HEADS-UP DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/015807
Kind Code:
A1
Abstract:
This vehicular heads-up display device, in which display information formed by a display unit (2) is projected onto and reflected off of an external projection member (100W) via light from a light source (3) such that a user (100D) at a prescribed position can see the resulting reflected image, is provided with a containing part (22), a temperature detection unit (5), and a light-source control means (S1 through S6 and S11 through S20). The containing part contains the display unit (2) and the light source (3). The display unit and the light source are laid out so as to face each other with a heat-transfer space (22H) inside the containing part interposed therebetween. The temperature detection unit is provided in a surrounding section (21) surrounding the display unit and the light source and detects the temperature of said surrounding section. If the temperature detected (Ts) by the temperature detection unit falls below a predetermined low-temperature threshold (Ta), the light-source control means controls the light source so as to increase the brightness thereof by increasing a driving current that is making the light source emit light. The heat produced as said driving current is increased is transferred to the display unit via the heat-transfer space, at least, and raises the temperature of the display unit.
Inventors:
YONEMOTO YAYOI (JP)
Application Number:
PCT/JP2014/004020
Publication Date:
February 05, 2015
Filing Date:
July 31, 2014
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G02F1/13; B60K35/00; G02B27/01; G02F1/133; G09G3/20; G09G3/34
Foreign References:
| JP2009229782A | 2009-10-08 | |||
| JP2012078619A | 2012-04-19 | |||
| JP2001281012A | 2001-10-10 | |||
| JP2010237238A | 2010-10-21 | |||
| JP2011090076A | 2011-05-06 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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