JPH021768Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〔Technical field〕 This invention relates to lighting equipment.

[Background technology]

Conventional examples are shown in FIGS. 4 and 5. In the figure, 40 is an instrument main body, 41 is a lens, 42 is a color filter, and 43 is a lens holding ring. However, this performance lighting equipment requires many parts to fix the lens 41 and the color filter 42, making it difficult to assemble and increasing the cost.

[Purpose of invention]

The purpose of this invention is to provide a lighting fixture in which optical components such as lenses can be easily fixed and focus adjustment is easy.

[Disclosure of invention]

The lighting device of this invention includes a device body with a lamp inside, an elastic tube that is fitted into an opening of the device body so as to be freely retractable and has a lens storage groove and a filter support portion inside, and a lens storage portion that is stored in the lens storage portion. and an optical component such as a filter supported by the filter support section.

According to the configuration of this invention, the filter is stored in the filter support part of the elastic tube, and the lens is stored in the lens storage groove, so optical components can be easily fixed.
Furthermore, since the elastic cylinder is fitted into the opening of the instrument body so as to be freely retractable, it is easy to attach to the instrument body and the focus can be adjusted.

A first embodiment of the production lighting equipment of this invention will be explained based on FIG. 1. In other words, 1 is a cylindrical instrument body, 2 is a lamp socket provided deep inside the instrument body, 3 is a lamp, 4 is a reflector, and 5 is a tube slidably fitted into the opening 6 of the instrument body 1. It is a fixed metal fitting which is moved forward and backward by a focus adjustment knob 8 passed through a slit 7 in the main body 1 of the instrument. Reference numeral 9 denotes an elastic cylinder made of a rubber material or the like, which has a circumferential groove 10 on its outer periphery at one end, and is fitted into the inner flange 11 of the fixture 5 by the elasticity of the elastic cylinder 9. A lens storage groove 12 is formed on the inner circumference of the elastic cylinder 9 on the mounting side, and a filter support part 13 is formed on the distal end side.
4 and the color filter 15 are each attached to an elastic tube 9.
Push it inside using the elasticity of the lens storage groove 1.
2 and the filter support section 13.

In this way, optical components such as the lens 14 and filter 15 can be held by one elastic tube 9 and attached to the instrument body 1, making assembly easy and cost-effective. Since it can be held simply by fitting the filter 15 etc., color replacement etc. can be easily performed. Since the elastic tube 9 is an elastic body, it has low thermal conductivity and does not get hotter than a metal tube, making it a safer device. Moreover, since the elastic tube 9 is fitted into the opening 6 of the instrument body 1 so as to be freely retractable, it can be easily attached to the instrument body 1 and the focus can be adjusted.

A second embodiment of this invention is shown in FIG. That is, the elastic cylinder 9a is directly slidably fitted into the opening 6a of the instrument main body 1a, so that focus adjustment can be performed. In addition, by locking the retaining protrusion 16 with the locking part 17, it is possible to prevent it from accidentally coming off, and because of the elastic action of the elastic tube 9a, it can be easily removed when pulled with more than a predetermined force, making it easy to replace the lamp. This also makes it easier to clean and replace optical parts such as the lens 14. Other parts common to the first embodiment are given the same reference numerals.

A third embodiment of this invention is shown in FIG. That is, a bellows-shaped cylinder or a pair of corrugated plates 18 is provided inside the instrument main body 1b, and an elastic cylinder 9 is provided on this uneven portion 19.
The focus adjustment is performed by fitting the rear end of b and moving the uneven portion 19 in the direction of the upward arrow.

[Effect of idea]

According to this invention, the filter is stored in the filter support part of the elastic tube, and the lens is stored in the lens storage groove, so optical components can be easily fixed, and the elastic tube can be freely moved forward and backward into the opening of the instrument body. Since it is fitted, it is easy to attach to the instrument body, and the focus can be adjusted.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the first embodiment of this invention, Fig. 2 is a sectional view of the second embodiment, Fig. 3 is a sectional view of the third embodiment, and Fig. 4 is a portion of the conventional example. The sectional view and FIG. 5 are perspective views of the holding ring. 1, 1a, 1b... appliance body, 3... lamp,
6, 6a...opening, 9, 9a, 9b...elastic tube, 12...lens storage groove, 13...filter support section, 14...lens, 15 filter.

Claims (1)

[Scope of utility model registration request] A device body with a lamp inside, an elastic cylinder fitted into an opening of the device body so as to be freely advanced and retractable and having a lens storage groove and a filter support portion therein, and a lens stored in the lens storage portion and the filter support. A lighting fixture equipped with an optical component such as a filter supported by a section.