IP Library Granted Patent US 8,388,143
Granted Patent B2
US 8,388,143 · App. 12/847,171 · Granted Mar 5, 2013

Projection display device

Inventors: Jieming Liang (Guangdong, CN); Chen Chen (Guangdong, CN); Lei Cao (Guangdong, CN); Wenming Wu (Guangdong, CN); Wentian Tang (Guangdong, CN); Xianglin Zhang (Guangdong, CN)
Assignees: SANYO Electric Co., Ltd.; SANYO Technology Center (Shenzhen) Co., Ltd.
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Quick Facts
Patent No.
US 8,388,143
App. No.
12/847,171
Granted
Mar 5, 2013
Kind
B2
Abstract

A projection display device includes a light source, a reflector, and a fixing portion. The device further includes a first air supply portion and a second air supply portion; a first air drawing portion which separates the cooling air from the first air supply portion into streams of the cooling air to guide one of the streams into an interior of the reflector in a first direction and to guide the other of the streams to the fixing portion in a second direction; and a second air drawing portion which separates the cooling air from the second air supply portion into streams of the cooling air to guide one of the streams into the interior of the reflector in a third direction and to guide the other of the streams to the fixing portion in a fourth direction.

Claims (16)

1. A projection display device comprising:

a light source including a light emitting portion, a reflector which reflects light emitted from the light emitting portion, and a fixing portion which fixedly mounts the light emitting portion with respect to the reflector;

a first air supply portion and a second air supply portion which supply a cooling air;

a first air drawing portion which separates the cooling air from the first air supply portion into streams of the cooling air to guide one of the streams of the cooling air into an interior of the reflector in a first direction and to guide the other of the streams of the cooling air to the fixing portion in a second direction; and

a second air drawing portion which separates the cooling air from the second air supply portion into streams of the cooling air to guide one of the streams of the cooling air into the interior of the reflector in a third direction and to guide the other of the streams of the cooling air to the fixing portion in a fourth direction.

2. The projection display device according to claim 1 , wherein

the third direction is a direction opposite to the first direction, and

the fourth direction is a direction opposite to the second direction.

3. The projection display device according to claim 1 , wherein

the first air drawing portion and the second air drawing portion directly blow the other stream of the cooling air to the fixing portion.

4. The projection display device according to claim 2 , wherein

the first air drawing portion and the second air drawing portion directly blow the other stream of the cooling air to the fixing portion.

5. A projection display device comprising:

a light source including a light emitting portion, a reflector which reflects light emitted from the light emitting portion, and a fixing portion which fixedly mounts the light emitting portion with respect to the reflector;

a first air supply portion and a second air supply portion which supply a cooling air; a first air drawing portion which separates the cooling air from the first air supply portion into two separate streams of the cooling air to guide one of the streams of the cooling air into an interior of the reflector in a first direction and to guide the other of the streams of the cooling air to the fixing portion, outside of the reflector, in a second direction; and

a second air drawing portion which separates the cooling air from the second air supply portion into two separate streams of the cooling air to guide one of the streams of the cooling air into the interior of the reflector in a third direction and to guide the other of the streams of the cooling air to the fixing portion, outside of the reflector, in a fourth direction.

Assignments (5)
CHANGE OF ADDRESS Recorded Feb 24, 2026
From: SANYO ELECTRIC CO., LTD.
To: SANYO ELECTRIC CO., LTD.
Reel/Frame 074982/0479 →
CHANGE OF ADDRESS Recorded Feb 24, 2026
From: SANYO ELECTRIC CO., LTD.
To: SANYO ELECTRIC CO., LTD.
Reel/Frame 074983/0494 →
NUNC PRO TUNC ASSIGNMENT Recorded Feb 24, 2026
From: SANYO ELECTRIC CO., LTD.
To: PANASONIC PROJECTOR & DISPLAY CORPORATION
Reel/Frame 074983/0875 →
CHANGE OF NAME Recorded Jan 28, 2011
From: SHENZHEN HUAQIANG SANYO TECHNOLOGY DESIGN CO., LTD.
To: SANYO TECHNOLOGY CENTER (SHENZHEN) CO., LTD.
Reel/Frame 025713/0832 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 30, 2010
From: LIANG, JIEMING; CHEN, CHEN; CAO, LEI; WU, WENMING; TANG, WENTIAN; ZHANG, XIANGLIN
To: SANYO ELECTRIC CO., LTD.; SHENZHEN HUAQIANG SANYO TECHNOLOGY DESIGN CO., LTD.
Reel/Frame 024769/0134 →
Priority Claims (1)
CN 2009 1 0190693 · Sep 29, 2009 · national
Continuity (1)
Related Publication 20110075110A1 · Mar 31, 2011