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

21 · 3 independent · depth 4

21 granted claims

›1.independentAn image projector, comprising:na light source to emit light;a fan to make air flow from an air inlet of the image projector toward an exhaust outlet …+10

›2.↳ 1The image projector according to claim 1, wherein the circuit boards do not face, from a side of the surface of the case opposite to the back surface …d2

›3.↳ 1The image projector according to claim 1, wherein a rear surface of the concave mirror has a convex shape.d2

›4.↳ 1The image projector according to claim 1, further comprising a surface, defining the flow path of the air, at a position facing the air which flows to…d2

›5.↳ 1The image projector according to claim 1, further comprising:nan optical device to project the image on a projection plane,wherein the light source, t…d2+2

›8.↳ 1The image projector according to claim 1, wherein the circuit boards are disposed so that respective surfaces on which electrical elements are dispose…d2

›9.↳ 1The image projector according to claim 1, wherein the circuit hoards are orthogonal to each other.d2

›10.↳ 1The image projector according to claim 1, wherein the circuit hoards face each other.d2

›11.↳ 1The image projector according to claim 1, wherein the light source and at least one of the circuit boards are connected to a ballast board.d2

›12.independentAn image projector, comprising:na light source to emit light;an image generator to generate an image using the light source;a concave mirror to reflec…+4

›17.independentAn image projector for projecting an image using light, comprising:na light source to emit the light;an image generator to generate an image using the…+4

Classifications

5 codes

IPC · International Patent Classification

Section G — Physics

G03B21/28
G03B21/16

USPC · US Patent Classification

353/52353/61353/119

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0.8 y

292 days filing → grant

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non-final + final

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no RCE

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Sultan Chowdhury

art unit 2882 · TC 2800

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20140347636 A1	27 Nov 2014

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