Title: Lamp bulb for reflecting type signal lamp
Application Number: 93109491 Application Date: 1993.08.04
Publication Number: 1098553 Publication Date: 1995.02.08
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: F21Q1/00,F21Q3/00,H01K1/32
Applicant(s) Name: Wang Qi Address: 741000
Inventor(s) Name: Ma Xiaodong
Attorney & Agent:
Abstract:
     The present invention is applicable to railway lens-type colored light semaphore. Said invention is that a layer of colorless metal reflecting film (specular surface faced with the interior of light bulb) is plated by vacuum evaporation on the surface of zone whose included angle is 210 deg. in the rear half-part of ball signal light bulb. Its use method is idetical to that of general signal light bulb, and the reflection type signal light bulb can make the photic quantity of the lens-type colored light semaphore clearly raise under the condition of that its any structure isn't changed. Its total optical utilization ratio can be raised by above one fold, so that it has the outstanding practical significance for raising display distance of the lens-type colored light semaphore and its signal display resolution.
Time: 24
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