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Patent Searching and Data


Title:
LAMP DEVICE
Document Type and Number:
Japanese Patent JP2006080044
Kind Code:
A
Abstract:

To provide a lamp device which can make it hard to leak outside the explosive sound of a discharge lamp and can improve cooling effect of a concave reflecting mirror.

The lamp device comprises a discharge lamp 1, the concave reflecting mirror 2 inside of which the discharge lamp 1 is arranged, an inner housing 3 of enclosed structure which covers and holds the concave reflecting mirror 2, an outer housing 4 of non-enclosed structure which covers the inner housing 3 and has an outside air inlet port 42 arranged on the opening side of the concave reflecting mirror 2 and an exhaust port 43 arranged on the bottom side of the concave reflecting mirror 2, a first fan 5 which is arranged in the inner housing 3 and generates air stream in the inner housing 3, and a second fan 6 which is arranged at the exhaust port 43 and exhausts the outside air taken into the outer housing 4 from the outside air inlet port 42 from the exhaust port 43.


Inventors:
Oshima, Hideki
Shiina, Hiroshi
Aiura, Tomoyuki
Application Number:
JP2004000266026
Publication Date:
March 23, 2006
Filing Date:
September 13, 2004
Export Citation:
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Assignee:
SHARP CORP
International Classes:
F21V29/02; F21V25/12; F21V29/00; G03B21/16; F21Y101/00
Attorney, Agent or Firm:
河野 登夫
河野 英仁