Display device for vehicle

Patent metadata

Field	Value
Publication number	US-12130513-B2
Application number	US-202418616172-A
Country	US
Kind code	B2
Filing date	Mar 26, 2024
Priority date	Mar 28, 2023
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

A display device for a vehicle includes a housing that is provided in a vehicle, a TFT that is housed in the housing, an intermediate mirror, an infrared light absorbing member, and a thermistor. The intermediate mirror is housed in the housing, reflects, on a reflecting surface, display light that has been output from the TFT in such a way that the display light reaches a visual observation position of a driver of the vehicle, and transmits infrared light included in sunlight without reflecting the infrared light on the reflecting surface. The infrared light absorbing member is provided on a side of a rear face that is opposite to the reflecting surface of the intermediate mirror, and absorbs the infrared light that has been transmitted through the intermediate mirror. The thermistor is provided to the infrared light absorbing member, and detects the temperature of the infrared light absorbing member.

First claim

What is claimed is:

1. A display device for a vehicle, comprising:
a housing that is provided in the vehicle;
a liquid crystal display element that is housed in the housing;
a mirror that is housed in the housing, reflects, on a reflecting surface, display light that has been output from the liquid crystal display element to cause the display light to reach a visual observation position of a driver of the vehicle, and transmits infrared light included in sunlight without reflecting the infrared light on the reflecting surface;
an infrared light absorbing member that is provided on a side of a rear face of the mirror, the rear face being opposite to the reflecting surface, and absorbs the infrared light that has been transmitted through the mirror; and
a temperature detector that is provided to the infrared light absorbing member, and detects a temperature of the infrared light absorbing member.

2. The display device for the vehicle according to claim 1 , further comprising:
a retaining member that retains the mirror and the infrared light absorbing member, wherein
the infrared light absorbing member is provided on the side of the rear face of the mirror to be spaced apart from the rear face in a state where the infrared light absorbing member is retained by the retaining member, and
the temperature detector is provided on a reverse face of the infrared light absorbing member, the reverse face being opposite to a side of the mirror.

3. The display device for the vehicle according to claim 2 , further comprising:
a processor that is able to perform processing for avoiding an increase in temperature of the liquid crystal display element on a basis of the temperature that has been detected by the temperature detector.

4. The display device for the vehicle according to claim 1 , wherein
the infrared light absorbing member is provided to be in close contact with the rear face of the mirror, and
the temperature detector is provided on a reverse face of the infrared light absorbing member, the reverse face being opposite to a side of the mirror.

5. The display device for the vehicle according to claim 4 , further comprising:
a processor that is able to perform processing for avoiding an increase in temperature of the liquid crystal display element on a basis of the temperature that has been detected by the temperature detector.

6. The display device for the vehicle according to claim 1 , wherein
the infrared light absorbing member is provided on an inner face of the housing that is disposed to face the rear face of the mirror, and
the temperature detector is provided on a front face of the infrared light absorbing member, the front face being located on a side of the mirror.

7. The display device for the vehicle according to claim 6 , further comprising:
a processor that is able to perform processing for avoiding an increase in temperature of the liquid crystal display element on a basis of the temperature that has been detected by the temperature detector.

8. The display device for the vehicle according to claim 1 , further comprising:
a processor that is able to perform processing for avoiding an increase in temperature of the liquid crystal display element on a basis of the temperature that has been detected by the temperature detector.

Assignees

• Yazaki Corp

Inventors

• Murata Naohisa

Classifications

• G02B2027/0196

  having transparent supporting structure for display mounting, e.g. to a window or a windshield · CPC title

• B60K35/40

  Instruments specially adapted for improving the visibility thereof to the user, e.g. fogging prevention or anti-reflection arrangements · CPC title

• B60K35/23

  Head-up displays [HUD] (optical aspects of head-up displays G02B27/01) · CPC title

• G01J5/00

  Radiation pyrometry, e.g. infrared or optical thermometry · CPC title

• G02F1/133382 Primary

  Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell · CPC title