Projection-type image display device

• US 9,667,924 B2
• Filed: 09/15/2015
• Issued: 05/30/2017
• Est. Priority Date: 04/18/2013
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Takemori, Takahiro, Mukai, Kazuo, Inoue, Masutaka
• Primary Examiner(s): Chowdhury, Sultan
• Application Number:
  US14/854,791
• Publication Number:
  US 20160006996A1
• Time in Patent Office: 623 Days
• CPC Class Codes: G03B 21/005 Projectors using an electronic spatial light modulator but not peculiar thereto
• CPC Class Codes: G03B 21/145 Housing details, e.g. position adjustments thereof
• CPC Class Codes: G03B 21/204 using secondary light emission, e.g. luminescence or fluorescence using different colours G03B33/00; if related to video signals H04N9/3197
• CPC Class Codes: G03B 21/2066 Reflectors in illumination beam in projection beam G03B21/28
• CPC Class Codes: G03B 33/06 by additive-colour projection apparatus
• CPC Class Codes: G09F 19/18 involving the use of optical projection means, e.g. projection of images on clouds projection apparatus per se G03B
• CPC Class Codes: G09F 19/22 Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
• CPC Class Codes: G09F 19/228 Ground signs, i.e. display signs fixed on the ground
• CPC Class Codes: H04N 9/3141 Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

Abstract

A projection-type image display device includes a first housing and a second housing. The first housing houses a light source unit configured to emit light, an image generating unit configured to modulate the light from the light source unit according to a video input signal to generate image light, and a projecting unit configured to project the image light generated by the image generating unit. The second housing includes an output unit configured to output a light signal and/or an input unit configured to input a light signal which are/is exposed and arranged on a surface of the second housing.

Claims

1. A projection-type image display device comprising:

a first housing that houses a light source unit configured to emit light, an image generating unit configured to modulate the light from the light source unit according to a video input signal to generate image light, and a projecting unit configured to project the image light generated by the image generating unit;

a second housing that includes a remote-control signal receiver for receiving an operational signal indicative of an instruction by a user from a remote controller; and

a joint unit for connecting the first housing to the second housing to allow the first housing to freely turn in several directions.

2. The projection-type image display device according to claim 1, further comprising:

an LED configured to inform the user of an internal state of the projection-type image display device.

3. The projection-type image display device according to claim 2, wherein

the LED is arranged over a bottom surface and another surface adjoining the bottom surface of the second housing.

4. The projection-type image display device according to claim 3, wherein the LED and the remote-control signal receiver are arranged on an end of the second housing opposite to another end of the second housing on which the joint unit is disposed.

5. The projection-type image display device according to claim 1, wherein the second housing has, on its lateral surface, an opening for exhaust.

6. The projection-type image display device according to claim 1, wherein the second housing houses a power-supply unit configured to supply electric power to the light source unit and the image generating unit.

7. The projection-type image display device according to claim 1, wherein the joint unit includes a ball shaft having a spherical end, and a shaft holder holding the spherical end to allow the spherical end to slidably turn in a hollow portion of the shaft holder.

8. The projection-type image display device according to claim 1, wherein the joint unit is rotatable around three mutually independent axes.