Title:
DISCHARGE LAMP AND TOOL FOR ATTACHING AND DETACHING DISCHARGE LAMP
Document Type and Number:
WIPO Patent Application WO/2014/104012
Kind Code:
A1
Abstract:
A discharge lamp including a luminous tube that has a top-end part and a base-end part, and a fixing cap that is provided to the base-end part, inserted into a lamp holder having a prescribed reference surface, and rotated so as to attach thereto. The fixing cap comprises a first body part that houses the base-end part, and a flange that is formed so as to protrude out from the outer periphery surface of the first body part. The flange comprises a base-end side end-surface that is formed in the direction orthogonal to an axial center, a short part that is formed along a first direction of the end surface and regulates the direction of the fixing cap, and a long part that is formed along a second direction, which is orthogonal to the first direction, and engages with the lamp holder when the fixing cap is rotated. The outer periphery edge of the flange is formed to have a shape that has no point symmetry with respect to the axial center, and the end surface of the flange contacts with the reference surface when the fixing cap is attached to the lamp holder.
Inventors:
ASHIDA KATSUMI (JP)
Application Number:
PCT/JP2013/084477
Publication Date:
July 03, 2014
Filing Date:
December 24, 2013
Export Citation:
Assignee:
HOYA CANDEO OPTRONICS CORP (JP)
International Classes:
H01J5/50; F21V19/00; F21Y101/00
Foreign References:
| JP2012169230A | 2012-09-06 | |||
| JP2003297228A | 2003-10-17 | |||
| JP2007335106A | 2007-12-27 | |||
| JPH0837069A | 1996-02-06 |
Attorney, Agent or Firm:
ARAKI YOSHIYUKI (JP)
Yoshiyuki Araki (JP)
Yoshiyuki Araki (JP)
Download PDF: