Title:
PORTABLE LIGHT SOURCE
Document Type and Number:
WIPO Patent Application WO/2000/066945
Kind Code:
A1
Abstract:
A portable light source comprises a lamp (10) contained in a lamp box (42), which is housed in a case (41) to significantly reduce the influences of ambient temperature. In other words, the deuterium lamp (10), likely to be influenced by temperature, is enclosed in a double shield structure including the lamp box (42) and the case (41). In the case (41), cooling fins (83) expand between the lamp box (42) on the front and a cooling fan (43) on the back to produce a cooling stream along the cooling fins (83), and the cooling fan (43) quickly discharges the cooling air introduced in the case (41). Therefore, the efficiency of air circulation in the case (41) increases, and the lamp output can stabilize in a shorter warm-up.
Inventors:
SEI YUJIRO (JP)
ITO MASAKI (JP)
ITO MASAKI (JP)
Application Number:
PCT/JP2000/002846
Publication Date:
November 09, 2000
Filing Date:
April 28, 2000
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
SEI YUJIRO (JP)
ITO MASAKI (JP)
SEI YUJIRO (JP)
ITO MASAKI (JP)
International Classes:
F21L14/00; F21V29/02; G01J1/02; G01J1/08; F21V29/00; (IPC1-7): F21L13/00; F21V29/00; G01J3/10; G01N21/01
Foreign References:
| JPH0927213A | 1997-01-28 | |||
| JPH08222186A | 1996-08-30 | |||
| JPS6030435U | 1985-03-01 | |||
| JPH0250648U | 1990-04-09 |
Attorney, Agent or Firm:
Hasegawa, Yoshiki (Ginza 2-chome Chuo-ku Tokyo, JP)
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