DE3744227A1 - Lamp socket for explosionproof tube light fittings - Google Patents

Abstract

Published without abstract.

Description

The invention relates to a lamp holder for phosphor lamps according to DIN 49 862 (⌀ 26 mm) with lamp base G 2.4 × 13 according to DIN 49 653 T1 or IEC 7004-51, for use in explosion-proof linear luminaires of the ignition protection type "Ex e" - increased security -, according to the preamble of Claim 1.

The innovation relates to the mechanical, constructive Part of a lamp holder for fluorescent lamps or the like. type where the requirements of the task are optimized accordingly were.

In the known lamp holder for lights the "raised Security "- Ex e - was assumed to be so were constructed to be together with the pen of the lamps sockets Fa 6/12 × 35 DIN 49 657 according to the fluorescent lamp DIN 49 569 resulted in a "flameproof encapsulated unit".

This meant that to operate lights in the Zünd Protection class "Ex e" - increased security -, special light fabric lamps with single pin bases Fa 6 DIN 49 657 required were.

Double storage, rare availability in retail, higher acquisition costs, lower luminous flux, no off The choice of light colors are only a few of many disadvantages of these special types.

The object of the present invention is a lamp to create a version of the type mentioned at the beginning, in which the the aforementioned disadvantages are eliminated and normal, fluorescent lamps according to DIN 49 862 available everywhere in the trade also in explosion-proof luminaires of the ignition protection type "Ex e" - increased security - to be able to use.

This object is achieved in that the Fluorescent lamp according to DIN 49 862 with its two contacts can be inserted into a new version, the spring-supported holding device mechanically the lamp and electrically fixed so that the requirements of Ex protection against explosion.

Using the drawing, in which some details of the lamp holder are shown, the invention is explained in more detail and be be written. It shows

Fig. 1 shows a longitudinal section through the bulb socket with an inserted, fixed lamp,

Fig. 2 shows a cross section through the socket housing with the electrically important effective contact part.

The fluorescent lamp 1 according to DIN 49 862 (⌀ 26 mm) is pushed with its two pins 2 through the front opening 3 of the socket housing 4 through a guide tube 5 which is equipped with a slot-shaped opening 6 , under the contact rail 7 .

However, this is only possible if the spring-assisted contact and retaining bracket 8 was previously actuated in the vertical direction via the manually operated pressure cap 9 inserted in the socket housing and the defined force F of the pressure spring 10 was overcome.

When relaxing the compression spring 10 , which is supported on the contact rail 7 , the bracket 8 is pressed upwards against the pressure cap 9 . With the lower edge 11 of the bracket cutout 12 , the lamp pin 2 is pressed non-positively from below against the contact rail 7 .

With the mechanical, non-positive connection of the lamp pin 2 and with the contact rail 7 is on the support plate 13 , on which a secured connection terminal 14 is attached at the same time, an electrical connection - which also as a soldering, crimping or similar connection can be guided - made for internal wiring of the lamp by means of a flexible conductor 15 .

The socket base 16 takes on an axially movable fastener 17 which is either screwed into a threaded bushing 18 or pressed directly into the socket base on the support plate 13 , which is held by 2 compression springs 19 in the socket base at a distance and a length compensation for the lamp 1 represents.

Through a molded in the socket base 16 groove 20 , the connecting line 15 is guided through a bore 21 in the lamp housing.

With the hole (s) 22 , the socket (s) are (are) attached to the reflector or other support elements.

Claims (3)

1. Lamp holder for explosion-proof linear luminaires in protection type "Ex e" - increased safety -, characterized in that the special contact and holding mechanism is suitable, the contact pins of two pin base fluorescent lamps according to DIN 49 862 (⌀ 26 mm) fix that a non-positive, mechanical and electrical connection, according to the requirements of the general explosion protection and in particular the requirements for the type of protection "Ex e" - increased safety - is established. 2. Lamp holder according to claim 1, characterized in that the holding mechanism also from screw connections or can also be made from resilient individual elements. 3. Lamp holder according to claim 1 and 2, characterized in that the holding mechanism has the same shape early as a bridge in the electrical sense for the two Lamp pins is formed.