JPH0628721Y2 - Floodlight - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a floodlight in which a lamp holder that also serves as a heat shield plate is formed at a joint between a reflecting mirror and a socket tube.

[Conventional technology]

As shown in FIG. 3, a conventional floodlight has a bottomed cylindrical socket cylinder 51 attached to the rear part of a truncated cone-shaped parabolic reflector 50 at its hinge portion 52 so as to be openable / closable or removable. From the front of the parabolic reflection mirror 50 through the bottom opening 50a of the parabolic reflection mirror 50, the base portion 53a of the lamp 53 as a light source is inserted into the socket cylinder 51, and the base portion 53a is inserted into the socket cylinder 51. It is constructed so that it can be fitted into the socket 54 formed inside. In addition, a lamp with a larger capacity 5
Since the lamp 53 itself has a heavy weight in the projector that constitutes No. 3, it is necessary to reduce the mechanical load on the base portion 53a, and the lamp holder 55 that supports the weight of the lamp 53 is configured in addition to the base portion 53a. It was

[Problems to be solved by the device]

However, the lamp holder 55 in the above conventional floodlight is used.
Is simply a plurality of leaf springs 5 from the inside of the parabolic reflector 50.
The tip of 5a is covered with a heat insulating material 55b such as asbestos to project toward the lamp 53, and the lamp 53 is only supported by this heat insulating material 55b, so that it is difficult to support the lamp 53 in all directions. Not only heat insulating material 5
5b is poorly attached to the leaf spring 55a, and the lamp 53
As the capacity of itself increases, the cap portion 53 due to the heat generation
There is a problem in that the heat effect on a occurs.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a floodlight in which a lamp holder that also serves as a heat shield plate can perform a heat shield effect on the socket cylinder side and a lamp support. Is.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the projector according to the present invention has a bottomed cylindrical socket tube attached to a rear portion of a reflecting mirror so that it can be opened and closed or detached at a hinge portion thereof, and the bottom portion of the reflecting mirror is attached from the front of the reflecting mirror. In a projector in which a cap portion of a lamp serving as a light source is inserted through an opening into a socket cylinder and the cap portion can be fitted into a socket formed in the socket cylinder, the reflecting mirror is a truncated cone. A rotating parabolic mirror and a rotating spherical mirror disposed at the rear of the rotating spherical mirror, and at the rear of the rotating spherical mirror and at a predetermined distance from the edge of the socket, with respect to the bottom opening of the rotating spherical mirror. A means for arranging a lamp holder made of a heat insulating material, which also functions as a heat shield plate formed in a ring shape so as to project from the circumferential direction and support the small diameter portion at the rear end of the lamp, is taken.

[Action]

According to the above configuration, since the lamp holder also serves as the heat shield plate, the lamp supports the base portion with the socket, and the lamp holder is provided with the lamp holder arranged at a predetermined distance from the edge of the socket. The outer periphery is stably supported at two points, the load on the cap is reduced, the heat effect on the socket cylinder side is blocked, and the heat effect on the socket and the cap part is eliminated.

〔Example〕

An embodiment of the projector according to the present invention will be described below with reference to the drawings.

In FIG. 1 and FIG. 2, reference numeral 1 is a frusto-conical rotating parabolic mirror, and a rotating spherical mirror 2 as an auxiliary reflecting mirror is further arranged at the rear portion thereof, and a bottom opening common to both is formed. 3 and 4 are communicated with each other in the socket cylinder 5, and the two reflecting mirrors 1, 2 are connected to the socket 6 formed in the socket cylinder 5.
The base 8 portion of the lamp 7 inserted from the 2 side can be screwed and mounted. The socket cylinder 5 covers the rotary spherical mirror 2 and is freely attached to and detached from the rear part of the rotary parabolic mirror 1 so that the bottom openings 3 and 4 of the rotary parabolic mirror 1 and the rotary spherical mirror 2 are formed. It is configured so that it can be opened and maintenance and inspection of the inside can be performed.
It is configured such that the socket cylinder 5 can be fixed to the rear portion of the rotary parabolic mirror 1, or can be released and detached by hanging 0. The bottom opening 4 of the rotating spherical mirror 2 having such a structure
On the other hand, the ring-shaped lamp holder 11 protruding from the circumferential direction is configured. That is, this lamp holder 11
Is formed in a donut shape made of a heat insulating material such as cotton-like glass fiber, and its inner diameter D is accommodated in the rotating parabolic mirror 1 and is held by the lamp holder 11 between the base 8 side of the lamp 7. It is formed to have a diameter substantially the same as or slightly smaller than the outer diameter. Further, the lamp holder 11 is supported by a support fitting 12 fixedly provided on the rear end surface of the rotating spherical mirror 2, and when the base 8 side of the lamp 7 is inserted into the lamp holder 11, the inner circumference of the lamp holder 11 comes into close contact with the outer circumference of the lamp 7. Then, the two reflecting mirrors 1 and 2 side and the socket tube 5 side are completely cut off.

Reference numeral 13 is a pedestal that supports the light projector, and variably vertically adjusts the irradiation direction of the lamp 7 by the reflecting mirror, that is, the paraboloid of revolution 1 and the spherical sphere of revolution 2.

In the above-mentioned embodiment, an example in which the reflecting mirror is composed of the rotating parabolic mirror 1 and the rotating spherical mirror 2 being separate bodies, but the reflecting mirror itself is a light projecting device. The design should be appropriately changed in terms of performance design, and the present invention is not necessarily limited to the above embodiment, and the rotating spherical mirror 2 may be formed continuously and integrally with the rear part of the rotating parabolic mirror 1. It is possible.

[Effect of device]

Since the floodlight according to the present invention is configured as described above, in the floodlight having a structure for accommodating a large lamp, the lamp holder can be configured in a portion other than the base, and the lamp holder also serves as a heat shield plate. Because it consists of
It is possible to eliminate the heat effect of the lamp on the side of the socket tube and prevent the deterioration of the function of the projector.

In particular, even a large-sized lamp of a large-sized floodlight can be stably supported by supporting the base part with a socket and supporting the outer periphery of the lamp with a lamp holder.

[Brief description of drawings]

 FIG. 1 is a vertical sectional side view of a main part showing a projector according to the present invention, FIG. 2 is an enlarged sectional view of the same main part, and FIG. 3 is a vertical sectional side view of a main part of a conventional projector. 1, 2 ... Reflector, 3, 4 ... Bottom opening 5 ... Socket tube, 7 ... Lamp 11 ... Lamp holder

Claims (1)

[Scope of utility model registration request] 1. A light source into which a socket having a bottomed cylindrical shape is attached to a rear portion of a reflecting mirror so as to be openable, closable or detachable at a hinge portion thereof, from the front of the reflecting mirror into a socket cylinder through a bottom opening of the reflecting mirror. In a floodlight which is configured such that the base part of the lamp can be inserted and the base part can be fitted into a socket formed in a socket tube, the reflecting mirror is a truncated parabolic mirror and its rear part. Of the rear surface of the lamp, which is a rear part of the rotary spherical mirror and which projects from the circumferential direction with respect to the bottom opening of the rotary spherical mirror at the rear part of the rotary spherical mirror and at a predetermined distance from the edge of the socket. The projector is characterized by arranging a lamp holder made of a heat insulating material which also functions as a ring-shaped heat shield plate to support the small diameter portion.