IMAGE PROJECTION APPARATUS, AND LIGHT SOURCE UNIT

• US 20160274444A1
• Filed: 03/17/2016
• Published: 09/22/2016
• Est. Priority Date: 03/19/2015
• Status: Abandoned Application

• Current Assignee: Ricoh Company Limited
• Original Assignee: Hideo Kanai, Satoshi Tsuchiya, Takahiro Hiramatsu, Tetsuya Fujioka, Yoshito Saito
• Inventors: SAITO, Yoshito, MIKUTSU, Yasunari, FUJIOKA, Tetsuya, KANAI, Hideo, TSUCHIYA, Satoshi, MIKAWA, Akihisa, MASHIMO, Jun, NISHI, Yukimi, HIRAMATSU, Takahiro
• Application Number:
  US15/072,615
• Publication Number:
  US 20160274444A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G03B 21/145 Housing details, e.g. position adjustments thereof
• CPC Class Codes: G03B 21/20 Lamp housings
• CPC Class Codes: G03B 21/2086 Security or safety means in lamp houses

Abstract

An image projection apparatus includes an outer casing having a mounting port, a light source unit detachably disposed in a body of image projection apparatus through the mounting port. The light source unit includes a light source to emit light to be used for projecting an image, a light source housing to retain the light source, and a cover integrated with the light source housing to cover the mounting port.

Claims

1. An image projection apparatus comprising:

an outer casing having a mounting port; and

a light source unit detachably disposed in a body of image projection apparatus through the mounting port, the light source unit including;

a light source to emit light to be used for projecting an image;

a light source housing to retain the light source; and

a cover integrated with the light source housing to cover the mounting port.

2. The image projection apparatus of claim 1, wherein the cover configures a part of the outer casing of the image projection apparatus.

3. The image projection apparatus of claim 1, further comprising:

a first positioning unit to set the light source at a correct position relative to a light irradiation target disposed in the body of the image projection apparatus when the light source unit is mounted in the body of the image projection apparatus, the light irradiation target being an irradiation target of the light emitted from the light source; and

a second positioning unit to set the cover at a correct position relative to the mounting port when the light source unit is mounted in the body of the image projection apparatus.

4. The image projection apparatus of claim 3, wherein the cover integrated with the light source housing is moveable relative to the light source.

5. The image projection apparatus of claim 4, wherein the cover integrated with the light source housing is moveable relative to the light source in a direction perpendicular to a detachment direction of the light source unit.

6. The image projection apparatus of claim 5, wherein the first positioning unit sets the light source at the correct position by abutting the light source unit to a reference position setting unit, disposed inside the image projection apparatus, along the detachment direction of the light source unit, and

wherein the cover integrated with the light source housing is moveable relative to the light source in the detachment direction of the light source unit,

wherein the cover includes a biasing member to bias the cover and the light source in opposite directions with each other along the detachment direction of the light source unit.

7. The image projection apparatus of claim 1, wherein the mounting port is an opening formed on one side face of the outer casing, and the light source unit is detachable from the image projection apparatus through the mounting port.

8. The image projection apparatus of claim 1, further comprising:

a handle having a pivot point on the cover, the handle pivotable between a non-operated position and an operating position; and

a lock device to lock the light source unit to the body of the image projection apparatus when the handle is pivoted to the non-operated position, and to release locking of the light source unit to the body of the image projection apparatus when the handle is pivoted to the operating position.

9. The image projection apparatus of claim 8, further comprising

a lock condition detector to detect whether the light source unit is locked to the body of the image projection apparatus;

and

a power supply controller to control power supply to the light source based on a detection by the lock condition detector.

10. The image projection apparatus of claim 9, wherein the power supply controller stops power supply to the light source when the lock condition detector detects that the light source unit is not locked to the body of the image projection apparatus, and

wherein the power supply controller supplies power to the light source when the lock condition detector detects that the light source unit is locked to the body of the image projection apparatus.

11. A light source unit detachably disposed to an image projection apparatus, the light source unit detachable through a mounting port of an outer casing of the image projection apparatus, the light source unit comprising:

a light source to emit light for projecting an image;

a light source housing to retain the light source; and

a cover integrated with the light source housing to cover the mounting port.