Base for annular lamp, annular fluorescent lamp, and lighting fixture

Abstract

A base for a circular lamp, a circular fluorescent lamp, and a lighting fixture. The base for the circular lamp comprises a hollow base body (3o) installable across both end parts of the bulbs of the circular lamp. The base body comprises a first base member (7) having a recessed part (7a) formed in the outer surface thereof, base pins (7o) vertically installed on the bottom part (7b) of the recessed part so that their outer ends are not projected from the outer surface of the base body to the outside and connectable to leads led from the bulbs, and a pair of communication grooves communicating with the recessed part in the circular diameter direction of the bulbs and a second base member (8) having a pair of locking projected parts (8c) and (8d) disposed to be projected from the pair of communication grooves by combining them with the first base member. Thus, the leads of the bulbs can be easily, securely, and rapidly connected to the base pins by caulking the base pins, and a damageto the base pins such as deformation in transportation and packaging can be prevented from occurring or its possibility can be lowered.

Description

technical field [0001] The invention relates to a lamp holder installed on an annular lamp tube, an annular fluorescent lamp and a lighting appliance. Background technique [0002] Conventionally, as an example of the base of such a circular fluorescent lamp, there is a base in which lead wires of electrodes of a circular lamp tube are connected to the base pins by crimping the base pins (hereinafter referred to as a first conventional example). In this conventional cap, the cap pins protrude outward from the outer surface of the cap main body in order to more easily caulk the cap pins with a caulking jig. [0003] However, in the first conventional example, since the cap pins protrude from the outer surface of the cap, the cap pins are often bent or deformed when they encounter foreign objects during transportation or replacement of the lamp. [0004] In addition, it is necessary to have a structure in which the protruding cap pin does not come into contact with the packag...

AI Technical Summary

Problems solved by technology

[0009] Therefore, when the circular fluorescent lamp is transported or replaced, foreign objects and the like are likely to enter the recesses and grooves of the base through the opening on the outer surface, so there is a problem that the possibility of deformation or damage such as bending of the terminal pins increases.

[0010] In addition, in the second conventional example, there is no discussion on the improvement of the strength of the engaging mechanism that engages with the locking mechanism on the socket side when attaching or detaching the socket, and the mechanism for preventing erroneous mounting.

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