Low-pressure mercury vapor discharge lamp with improved heat dissipation, and manufacturing method therefore
First Claim
Patent Images
1. A method for manufacturing a low-pressure mercury vapor lamp provided with a globe attached to a case so as to house an arc tube therein, comprising:
- a sticking agent supplying step of supplying a sticking agent to the case in an area of a circumferential surface of an open end portion to be attached to the globe; and
a fitting step of loosely fitting together an open end portion of the globe and the open end portion of the case so that the globe overlaps the area of the case where the sticking agent is suppliedwherein an area S of the overlapping surface of the globe and a total area Sa of the areas where the globe is bonded to the case satisfies a relation expressed by S/6≦
Sa≦
S/2.
0 Assignments
0 Petitions
Accused Products
Abstract
A bulb-type fluorescent lamp has a case having an open end portion for housing a lighting circuit therein, an arc tube extending outside through the open end portion of the case, and a globe having an open end portion for housing the arc tube therein. An adhesive is supplied to the inner surface of the open end portion of the case at four circumferentially spaced areas, and the open end portion of the globe is inserted into the open end portion of the case. As a result, the globe is fixed to the case with the adhesive.
50 Citations
5 Claims
-
1. A method for manufacturing a low-pressure mercury vapor lamp provided with a globe attached to a case so as to house an arc tube therein, comprising:
-
a sticking agent supplying step of supplying a sticking agent to the case in an area of a circumferential surface of an open end portion to be attached to the globe; and a fitting step of loosely fitting together an open end portion of the globe and the open end portion of the case so that the globe overlaps the area of the case where the sticking agent is supplied wherein an area S of the overlapping surface of the globe and a total area Sa of the areas where the globe is bonded to the case satisfies a relation expressed by S/6≦
Sa≦
S/2. - View Dependent Claims (2, 3, 4, 5)
-
Specification