# US 9,519,143 B2 · Headup display apparatus for vehicle

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- Number: US 9,519,143 B2
- Document ID: US9519143B2
- Status: Granted
- Kind: B2
- Application number: 14/352,605
- Filed: 2012-10-05
- Published: 2014-09-11
- Granted: 2016-12-13
- Earliest claimed: 2011-10-20
- Assignees: Nippon Seiki Co., Ltd.
- Applicants: Nippon Seiki Co., Ltd.
- Inventors: Katsuei Takatoh; Mitsugu Kobayashi
- Web page: https://patentgrep.com/patent/US9519143B2

## CPC

- G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)}
- B60K 35/23: Head-up displays [HUD] (optical aspects of head-up displays G02B27/01)
- B60K 35/60: Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10)
- B60K 2360/334: Projection means
- B60K 2360/785: on or in relation to the windshield or windows
- G02B 2027/0118: {comprising devices for improving the contrast of the display / brillance control visibility}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES

## Abstract

A headup display apparatus for vehicles is capable of suppressing deterioration of luminance of virtual images, while avoiding a cost increase. This headup display apparatus includes: a light emitting unit having at least a light emitting body that emits output light; a liquid crystal display which emits display light; a concave mirror which reflects the display light; and a housing which houses the light emitting unit, the liquid crystal display, and the concave mirror. The output light that has been emitted from the light emitting body, and the display light that has been reflected by the concave mirror are radiated to a windshield through a translucent cover, and a virtual image obtained by means of the radiation is visually recognized by a driver. The light emitting unit is disposed inside of the housing such that the light emitting unit faces the windshield with the translucent cover therebetween.

## Claims

### Claim 1

A headup display apparatus for a vehicle comprising:
a light emitting device provided with at least a light emitting body to emit output light and a case body for housing the light emitting body;
a display for emitting display light;
a reflection member for reflecting the display light; and
a housing for housing the case body, the display, and the reflection member, wherein
the output light emitted from the light emitting body and the display light reflected by the reflection member are radiated to a predetermined projection member through a translucent part formed in the housing,
a virtual image obtained by the radiation is visually recognized by a user of a vehicle,
the light emitting device is arranged inside the housing so as to face the projection member across the translucent part, and
a holding member supports the reflection member and is fixed to a flange portion of the case body.