An image projection apparatus includes a light source, light from which is used to form an image to be projected, a first flow path, a control unit configured to control a light emission from the light source, an electrical power stabilizing unit configured to stabilize an electrical power to be supplied to the light source, and an electrical power source unit configured to supply the electrical power to at least one of the control unit and the electrical power stabilizing unit. One or both of the electrical power source unit and the electrical power stabilizing unit is/are divided into a plurality of boards. The light source is arranged on a normal line of a surface of any of the plurality of boards. The plurality of boards configure surfaces of the first flow path except a surface nearest to the light source.

Claims

5 · 1 independent · depth 2

5 granted claims

›1.independentAn image projection apparatus comprising:na light source, light from which is used to form an image to be projected;a first air flow path;a control un…+4

›2.↳ 1The image projection apparatus according to claim 1, further comprising:na case configured to accommodate the light source, an image forming element r…d2

›3.↳ 1The image projection apparatus according to claim 1, whereinnthe plurality of boards are arranged so that surfaces thereof on which at least one elect…d2

›4.↳ 1The image projection apparatus according to claim 1, whereinnone of the plurality of boards has a thermal switch to shut off the electrical power to b…d2

›5.↳ 1The image projection apparatus according to claim 1, wherein the main power source board and the sub power source board are attached to a main body of…d2

Classifications

7 codes

IPC · International Patent Classification

Section G — Physics

G03B21/14
G03B21/16

USPC · US Patent Classification

353/119315/294353/122353/85315/291

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Pendency

2.4 y

887 days filing → grant

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non-final + final

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Examiner

Sultan Chowdhury

art unit 2882 · TC 2800

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20130114050 A1	9 May 2013

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