JPH023220Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to lighting equipment.

(Background Art) Generally, when a lamp having a filament and a reflector are put together, an adjustment mechanism is provided to adjust the positional relationship between the two.

Conventionally, as shown in FIG. 1, a socket base 2 with a socket 1 attached thereto is screwed onto a thumbscrew 4 penetrating the instrument body 3, and the instrument body 3 and socket base 2 are connected together.
A compression coil spring 5 is interposed between the socket base 2 and the socket base 2 by rotating the thumbscrew 4 against the elasticity of the compression coil spring 5 or by the elastic return force.
was retreating.

However, the threaded portion between the socket base 2 and the thumbscrew 4 is tilted due to the inclination of the screw thread, resulting in a misalignment in the direction perpendicular to the axis of the lamp 6 and the reflector.

(Purpose of the invention) The present invention has been made in view of the above points, and an object thereof is to provide a simple structure that can adjust the position of the lamp along the axial direction.

(Embodiment) FIGS. 2 to 4 show an embodiment of the present invention, in which a lamp 6 is housed in a bottomed cylindrical instrument body 3, and the light from the lamp 6 is controlled by a reflector plate 7. This is a lighting fixture that emits light from the open front of No. 3. The reflecting plate 7 is approximately bowl-shaped, and is formed by forming a selective transmission film on the inner surface of glass that reflects visible light and transmits infrared light. This reflector 7
The mounting base 9 to which the is attached is bent into a substantially U-shaped cross section,
A lamp hole 10 is formed on the top surface, and an outer flange 12 bent from the base of both side walls 11 connects the bottom plate 8 of the device body 3.
The reflector plate 7 is attached to the lamp hole 10 on the top surface.
is attached. The socket 1 holding the lamp 6 is attached to a socket base 2 which is bent into a flat, substantially rectangular cylinder shape, and this socket base 2 has a screw hole 13 and a rotation hole 14 formed in the bottom surface, and the width is the same as that described above. It is formed to be slightly smaller than the spacing between both side walls 11 of the mounting base 9, and is positioned between the both side walls 11 of the mounting base 9 so that rotation is prevented and it can move up and down. A plate spring 15 having a substantially trapezoidal shape and widening at both ends is interposed between the socket base 2 and the bottom plate 8 of the device main body 3.
A locking piece 16 cut and raised from the leaf spring 15 is inserted and locked into the locking hole 14 of the socket base 2, thereby positioning the two. This leaf spring 15 has a top surface 20 that is slightly narrower than the base 2, legs 21 that are bent to widen from both ends of the top surface 20, and a collar that is bent outward from the tip of the legs 21. 22, top surface 2
0 to the back of the socket base 2, and the legs 2
The flange 22 at one tip is brought into contact with the instrument body 3, and is stably abutted against the instrument body 3 and the socket base 2.
Then, insert the thumbscrew 4 through the hole 17 in the bottom plate 8 of the device body 3 and insert the leaf spring 15 into the socket base 2.
It is screwed into the screw hole 13 of.

The lamp 6 is attached to the socket 1 and is positioned so as to protrude into the reflector plate 7 from the lamp hole 10 of the mounting base 9.

When adjusting the positional relationship between the filament 18 of the lamp 6 and the focal point of the reflector 7, for example, by rotating the thumbscrew 4, the socket base 2 screwed onto the thumbscrew 4 is aligned with the side wall 11 of the mounting base 9.
Go back and forth between. At this time, the leaf spring 15 is connected to the socket base 2 and the device main body 3, as shown by the chain line in FIG.
The flanges 22 smoothly slide along the instrument body 3, the legs 21 spread, and their elastic force urges the socket base 2 toward the reflector plate 7. When both legs 21 are spread out in this way, the center of the top surface 20 is concavely curved, and the legs 21 at both ends are bent at the corner 1.
The socket base 2 comes into contact with the back surface of the socket base 2 at the 9 portion, and urges the socket base 2 toward the reflecting plate 7 without tilting it.

(Effect of the invention) The present invention is constructed as described above, in which the mounting base 9 to which the reflector plate 7 is attached is formed into a substantially U-shape, and the socket base is placed between the side walls 11 of the U-shaped mounting base 9. 2
A plate spring 15 is interposed between the socket base 2 and the device body 3, and a screw 4 inserted through the device body 3 is screwed into the socket base 2. By rotating the socket base 2, the socket base 2 can be easily moved forward and backward while being urged toward the reflecting plate 7 by the elastic force of the leaf spring 15. The plate spring 15 has a collar 22 at the tip of both legs 21.
, the legs 21 slide smoothly along the device body 3, the legs 21 spread out, and the socket base 2 can be biased toward the reflector plate 7 by a stable elastic force. Further, the leaf spring 15 is formed in a U-shape, and the top surface 20 is concavely curved at the center, and the legs 21 at both ends of the top surface 20 are bent at corners 19 near both ends of the back surface of the socket base 2. The socket base 2 moves without tilting, and the reflector 7 and lamp 6 can be accurately aligned.

[Brief explanation of the drawing]

FIG. 1 is a front view of main parts showing a conventional example. Second
4 to 4 show embodiments of the present invention, FIG. 2 is a front view in partial section, FIG.
The figure is an exploded perspective view of essential parts. 1... Socket, 2... Socket base, 3... Instrument body, 4... Thumbscrew, 5... Compression coil spring, 6... Lamp, 7... Reflector plate, 8... Bottom plate,
9... Mounting base, 10... Lamp hole, 11... Side wall, 12... Outer flange, 13... Screw hole, 14... Detent hole, 15... Leaf spring, 16... Detent hole, 17 …
...hole, 18... filament, 19... corner.

Claims (1)

[Scope of utility model registration request] A roughly U-shaped mounting base is attached to the main body of the instrument, a reflector is attached to the top of the mounting base, and a reflector is installed between both sides of the mounting base to prevent rotation on both sides, which is slightly smaller than the spacing between both sides. movably positioning the socket base, attaching a socket to the socket base and attaching a lamp projecting into the reflector plate, interposing a leaf spring between the socket base and the main body of the device,
Screw the screw inserted through the device body into the socket base,
In a lighting fixture in which the socket base is movable by rotation of the screw while being biased toward the reflector by the elastic force of a leaf spring, the leaf spring has a top surface narrower than the socket base and a top surface that is narrower than the socket base; It consists of legs that are bent unwidened from both ends of the top surface, and a collar that is bent outward from the tips of the legs, and the corners where the legs at both ends of the top surface are bent touch the back of the socket base. A lighting device characterized in that the flange at the tip of the leg is in contact with the main body of the device.