# US 8,540,380 B2 · Projector with a radiation source

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- Number: US 8,540,380 B2
- Document ID: US8540380B2
- Status: Granted
- Kind: B2
- Application number: 13/104,497
- Filed: 2011-05-10
- Published: 2011-11-17
- Granted: 2013-09-24
- Earliest claimed: 2010-05-17
- Assignees: Seiko Epson Corporation
- Applicants: Masayuki Okoshi
- Inventors: Masayuki Okoshi
- Web page: https://patentgrep.com/patent/US8540380B2

## CPC

- G03B 21/16: Cooling; Preventing overheating
- G03B 21/145: {Housing details, e.g. position adjustments thereof}
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

A projector is provided with a radiation source adapted to radiate an electromagnetic wave during an operation and an exterior housing adapted to house the radiation source inside, wherein the exterior housing includes a first housing made of synthetic resin, and a second housing including a shield material adapted to block the electromagnetic wave, and disposed at a position for covering the radiation source in a plan view.

## Claims

### Claim 1

A projector comprising:
a radiation source adapted to radiate an electromagnetic wave during an operation; and
an exterior housing adapted to house the radiation source inside,
the exterior housing includes
a first housing made of synthetic resin, the first housing having a recess that is recessed from an exterior facing surface of the first housing toward an inside of the projector, and
a second housing including a shield material adapted to block the electromagnetic wave, and disposed at a position for covering the radiation source in a plan view, the second housing being disposed over the recess of the first housing such that the recess is blocked from being open to an exterior of the projector by the second housing.

### Claim 2 (depends on 1)

The projector according to claim 1, wherein
the recess is formed in the first housing, and is adapted to house the radiation source, and
the second housing is disposed on the first housing so as to close the recess.

### Claim 3 (depends on 2)

The projector according to claim 2, further comprising:
a shield plate including a shield material adapted to block the electromagnetic wave.

### Claim 4 (depends on 3)

The projector according to claim 3, wherein
the shield plate is attached to the first housing so as to cover the radiation source in a plan view with the recess intervening between the shield plate and the radiation source.

### Claim 5 (depends on 2)

The projector according to claim 2, wherein
the radiation source includes a printed-wiring board and a plurality of circuit elements, and
the recess includes a first opening and a second opening adapted to let air inside the exterior housing flow toward the printed-wiring board and the plurality of circuit elements.

### Claim 6 (depends on 5)

The projector according to claim 5, wherein
the radiation source includes a radiation section, and
the recess includes a third opening adapted to eject the air introduced from the outside of the exterior housing and flowing by the radiation section.

### Claim 7 (depends on 1)

The projector according to claim 1, wherein the radiation source is a power supply unit.