JPS5832229Y2 - Socket for discharge lamp with base on both ends - Google Patents

Description

[Detailed description of the invention] This invention relates to a socket for a discharge lamp with a cap on both ends, such as a metal ride lamp, used for spotlights in studios, etc., and its purpose is to make it easy to attach and detach the discharge lamp. It is an object of the present invention to provide a socket for a discharge lamp with caps at both ends, which has good heat dissipation efficiency and can extend the life of the discharge lamp.

Hereinafter, the present invention will be explained based on examples.

First of all, the discharge lamp with caps at both ends will be explained with reference to FIG.
Metal cylindrical caps 42 and 42 are disposed at both ends of the main body glass tube 41 and are connected to electrodes disposed inside the main body glass tube 41 to airtightly seal the main body glass tube 41.

And nuts 4 are attached to the ends of these caps 42 and 42, respectively.
4 is provided.

The socket of the present invention is adapted to mount the discharge lamp 40 shown in FIG. 1, and the socket of the present invention will be explained below with reference to FIGS. 2 to 5.

FIG. 2 shows a front view of the socket of the present invention in which the discharge lamp 40 of FIG. .

Reference numerals 3 and 3 denote socket terminal plates made of conductive metal material that are provided oppositely to the upper parts of the insulating plates 2 and 2, and the discharge lamp 40 can be connected by tightening nuts 44 and 44 to the threaded parts 43 and 43 of the discharge lamp 40, respectively. to hold it in place and to make electrical connections.

4, 4 is a heat pink made of a heat-resistant metal material provided inside the socket terminal plates 3, 3, respectively, and is attached to the base 42, 42 of the discharge lamp 40, and is connected from the main body glass tube 41 to the base 4.
2. Dissipate the heat conducted to 42.

5.5 is the inner heat sink 4 of the heat sink 4.4,
A heat shield plate made of a heat-resistant metal material is arranged at a distance from the discharge lamp 40 to block radiation from the discharge lamp 40 reaching the heat sinks 4, 4 or the socket terminal plates 3, 3.

Although not shown, these socket structures are further equipped with a reflector at the rear of the base 1, and a moving mechanism that accommodates the reflector in a housing with a lens at the front and adjusts the distance to the lens. A spotlight is constructed by arranging the following.

Next, the above socket structure will be explained in more detail with reference to FIGS. 3 to 5.

The socket terminal plate 3 has a cut groove 11 in its upper part for arranging a threaded rod 43 disposed at the end of the base 42 of the discharge lamp 40, and holds a covered portion of the lead wire 10 connected to the power source. A clamp 12 to connect the lead wire and a terminal 13 to connect the lead wire by crimping or the like are provided, and the tube 14, which is longer than the thickness of the insulating plate 2, is attached to the mounting hole 17 made in the insulating plate 2 using bolts 15 and nuts 16. .

Since the diameter of the mounting hole 1γ is larger than the outer diameter of the tube 14, the mounting position of the socket terminal plate 3 can be freely adjusted with respect to the insulating plate 2 in the front and back, left and right, or diagonal directions.

The heat sink 4 has approximately semi-cylindrical base mounting parts 18a, 18.
It consists of a heat sink fixed piece 4a and a heat sink movable piece 4b, which are arranged symmetrically and have a plurality of fins 19 disposed on b. The shaft hole 22 drilled by
, 23 and arranged inside the socket terminal plate 3, and the heat sink movable piece 4b is rotated by inserting the support shaft 24 arranged in the socket terminal 3 into the shaft hole 25 continuously drilled in the fin 19. It is movably disposed inside the socket terminal plate 3 facing the heat sink fixing piece 4a.

Reference numeral 26 denotes a heat sink holding fitting, which is made by curling both ends of a metallic elastic wire member to form a bearing part 27, 27, forming a handle part 28 in the center, and bending it in two to form a roughly U-shape as a whole. Arc-shaped pressing portions 29a and 29b are formed in a circular shape and abut against the outer surfaces of the cap mounting portions 18a and 18b of the heat sink fixed piece 4a and the heat sink movable piece 4b, respectively.
The bearing portions 27 and 27 are rotatably pivotally attached to the support shaft 21 so that the pressing portions 29a and 29b are disposed between the fins 19.

The heat shield plate 5 has a notch 30 for inserting and removing the end of the discharge lamp 40 when attaching and detaching the discharge lamp 40, and has collars 31 on the support shafts 20 and 21 to prevent heat conduction to the heat sink 4. It is interposed and fixed with a nut 32 at a distance from the heat sink fixing piece 4a.

When attaching and detaching a discharge lamp with caps at both ends to a socket having such a structure, first, when attaching the discharge lamp, hook the handle part 28 of the heat sink holding fitting 26 with your fingers and lift it upward to open the heat sink movable piece 4b. and 400 discharge lamps
The cap 42 is attached to the cap mounting portion 18a of the heat sink fixing piece 4a.
At the same time, the screw rod 43 disposed at the end of the base 42 of the discharge lamp 40 is disposed in the cut groove 11 of the socket terminal plate 3, and the heat sink movable piece 4b is closed.

At this time, since the socket terminal plate 3 is attached to the insulating plate 2 with a suitable amount of play, the position should be adjusted appropriately between the opposing sockets, and the heat sink holding bracket 2 should be placed in the predetermined position.
9 is rotated to engage the heat sink movable piece 4b, and a nut 44 is attached to the threaded portion 43 of the discharge lamp 40 and tightened.

Therefore, the heat sink fixed piece 4a and the heat sink movable piece 4b are constantly brought into contact with the base 42 of the discharge lamp 40 due to the elastic force of the heat sink holding fitting 26.

Furthermore, by tightening the nut 44 to the threaded rod 43 of the discharge lamp 40, the end surface of the cap 42 of the discharge lamp 40 comes into pressure contact with the inner surface of the socket terminal plate 3, and since the nut 44 comes into pressure contact with the outer surface of the socket terminal board 3, the cap 42 and the threaded rod 43 are electrically connected to the socket terminal plate 3, and the discharge lamp 40 is connected to a power source via the lead wire 10.

When removing the discharge lamp 40 from the socket, put your finger on the handle part 28 of the heat sink holding fitting 26 and push it upward to release the engagement with the heat sink movable piece 4b.
Open the heat sink movable piece 4b, loosen the nut 44, and remove it.

Incidentally, in the present invention, although it is not necessarily necessary to provide the heat shield plates 5, 5 inside the heat sinks 4, 4,
, 5 is provided to block radiant heat from reaching the heat sinks 4, 4 or the socket terminal plates 3, 3 from the discharge lamp 40. By providing this, the heat sinks 4, 5 due to the radiant heat can be blocked.
This prevents heating of the heat sinks 4, etc., and further enhances the heat dissipation effect of the heat sinks 4, 4.

As described above, the socket for the discharge lamp with double-end caps of the present invention allows the discharge lamp to be easily attached and detached by engaging and disengaging the heat sink holding fitting between the heat sink fixed piece and the heat sink movable piece. The presser fitting always connects the heat sink fixed piece and the heat sink movable piece with its elastic force, so even if the discharge lamp base expands or contracts due to temperature changes, the adhesiveness between the discharge lamp base and the heat sink is good, and the heat dissipation effect is good. This can extend the life of the discharge lamp.

Furthermore, when a heat shield plate is provided inside the heat sink fixed piece and the heat sink movable piece, radiant heat from the discharge lamp reaching the heat sink or the socket terminal plate is blocked, making it possible to further enhance the heat dissipation effect of the heat sink.

Normally, discharge lamps used for lighting stages and the like are very expensive, and are removed from the socket when not in use, and attached to the socket when the button is in use.

Therefore, the frequency of attaching and detaching discharge lamps to and from sockets increases, so by making it easy to attach and detach and replace discharge lamps as in this invention, it becomes convenient to handle and also extends the life of expensive discharge lamps. This has extremely beneficial effects in practical terms, such as bringing about economic benefits.

[Brief explanation of drawings]

Fig. 1 is a front view of a metal halide lamp, Fig. 2 is a front view of an embodiment of the invention, Fig. 3 is an enlarged front view of an embodiment of the invention, Fig. 4 is an enlarged rear view, and Fig. 5 is an enlarged rear view of the embodiment of the invention. It is also an enlarged side view. 2.2...Insulating plate, 3,3...Socket terminal board, 4
4... Heat sink, 4a... Heat sink fixed piece, 4b... Heat sink movable piece, 10... Lead wire, 11... Cut groove, 26... Heat sink presser fitting.

Claims (1)

[Scope of utility model registration request] It is made of a conductive metal material, and is connected to a lead wire leading to a power source, and is placed on two insulating plates that stand upright facing each other at a predetermined distance, each with an appropriate amount of play, and has a cylindrical cap at both ends. A threaded rod is provided in the axial direction at the end of the cap, and a cut groove is formed for arranging the threaded rod of the discharge lamp with a double-end cap, and a nut is screwed onto the threaded rod L1. a socket terminal plate which is clamped between the end face of the base of the lamp and a nut, and a substantially semi-cylindrical surface made of a heat-resistant metal material, which is fixedly installed inside the socket terminal plate and whose inner surface abuts the outer periphery of the base of the discharge lamp. a heat sink fixing piece formed in a shape and having a plurality of fins arranged at intervals on the outside; and a heat sink fixing piece made of a heat-resistant metal material, and rotatably disposed inside the socket terminal plate opposite to the heat sink fixing piece. , the heat sink movable piece having an inner surface shaped like a substantially semi-cylindrical surface that contacts the outer periphery of the base of the discharge lamp and having a plurality of fins arranged at intervals on the outside; and the heat sink fixing piece, which is made of an elastic linear member. and the heat sink movable piece, and the heat sink fixed piece and the heat sink movable piece are arranged in a manner such that the heat sink fixed piece and the heat sink movable piece face each other and their inner surfaces abut against the base of the discharge lamp. A socket for a discharge lamp with bases at both ends, consisting of a heat sink presser and a metal fitting for tightening the heat sink and the outer parts of the lamps.