JPH0716242Y2 - Spotlight with lens - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a spotlight with a lens, and more particularly to a spotlight with a lens in which a stretchable portion for adjusting the focus of the lens is covered with a cover. is there.

[Conventional technology]

Spotlights used in stores include lens-equipped spotlights in which a lens is arranged in front of the lamp to raise the illuminated surface with sharp edge light. In this spotlight with lens, it is necessary to light the lamp after mounting to adjust the focus of the lens, and it is necessary to make the lens movable back and forth with respect to the lamp. For example, as shown in FIG. It is configured.

In this spotlight with a lens, a lighting fixture body 1'is hung on a ceiling of a store or the like by a fixture 23 attached to the ceiling so that the luminaire main body 1'is rotatable in a horizontal plane and swingable in a vertical plane. The luminaire main body 1'comprises a substantially cylindrical tamper part 2'having a lamp therein, and a lens part 3'having a cylindrical shape having a diameter smaller than that of the lamp part 2'and holding a lens 13 '. The lens section 3'is adapted to adjust the focus by inserting the rear end into the front end opening of the lamp section 2'and changing the margin from the lamp section 2 '.

On the other hand, in a spotlight as shown in FIG. 6, a lighting fixture body 1 ″ is hung on a ceiling of a store or the like by a fixture 23 attached to the ceiling so that the luminaire body 1 ″ can be freely rotated in a horizontal plane and can be swung in a vertical plane. The luminaire main body 1 ″ includes a substantially cylindrical lamp portion 2 ″ equipped with a lamp therein and a baffle portion 26 having a cylindrical shape having the same diameter as the lamp portion 2 ″ and having a baffle formed therein. Between the support rods 24 attached to the baffle portion 26
Is held by a fixture 25 attached to the ramp portion 2 ″ and covered with a bellows 15 ′ formed elastically by elastic rubber. Then, the fixture 25 is loosened and the support rod 24 is slid. When the baffle portion 26 is moved in this manner, the bellows 15 'expands and contracts elastically, and both ends of the bellows 15' are always in contact with the ramp portion 2 "and the baffle portion 26.

[Problems to be solved by the device]

However, in the spotlight with a lens as shown in FIG. 5, a large step is generated due to the difference in diameter between the lamp portion 2'and the lens portion 3 ', which may impair the appearance.

Further, in the spotlight as shown in FIG. 6, the number of parts is increased and the structure is complicated, and it is necessary to make the bellows 15 ′ hot and thick in order to prevent the bellows 15 ′ from being dented or dropped. There is a possibility that the bellows 15 'becomes hard and impairs the movement operability of the baffle portion 26.

The present invention has been made in view of the above background, and a lens covered with a bellows has a simple structure and does not cause a step between the rumb portion and the lens portion without causing a dent or a depression in the bellows. It is intended to provide an attached spotlight.

[Means for Solving the Problems]

The spotlight with a lens according to the present invention is mounted on the main body of the lighting fixture and is mounted in the front of the lamp surrounded by the reflecting mirror. The fixed cylindrical body and the fixed cylindrical body are slidably supported in the vicinity of the front end. An elliptical slide in which a slide cylinder holding a lens is provided, a mounting screw is screwed into a screw hole provided on the side surface of a fixed cylinder, and the tip of the mounting screw is provided on the side surface of the slide cylinder. In a spotlight with a lens that is inserted into a hole and is capable of focus adjustment by guiding the slide cylinder with the mounting screw to move back and forth, the fixed cylinder and the slide cylinder are housed in the lens body, A lens holder whose outer diameter on the front end side is approximately the same as that of the lens unit main body is provided at the front end of the slide cylinder so as to project outside the lens unit main body. Is installed inside the bellows. It is somewhat that provided a substantially cylindrical guide member of smaller diameter than La inner diameter.

〔Example〕

1 to 4 show an embodiment of the present invention, which will be described below with reference to the drawings.

The luminaire main body 1 of the spotlight with a lens is fixed to a tip end of a mounting arm (not shown) whose base is rotatably mounted on a mounting surface such as a ceiling in a horizontal plane so that it can be swung vertically. The luminaire main body 1 has a substantially cylindrical shape,
A cutter 4 for changing the light distribution pattern on the irradiation surface is provided between the rear lamp part 2 and the front lens part 3.

The lamp unit 2 is provided with a substantially point light source-shaped lamp 7 mounted in a socket 6 in a cylindrical lamp unit main body 5 having a closed rear end surface, and the position of the lamp 7 is substantially the focal point. The reflecting mirror 8 has been attached.

Lens part 3 in front of the cutter 4 of the luminaire main body 1
Is configured as follows. A lens body 9 having a substantially cylindrical shape with openings at both ends has the same diameter as the lamp body 5, and has a shallow cylindrical fixed cylinder 10 and a slide cylinder slidably supported in the fixed cylinder 10. Wearing body 11 and. A lens holder 12 is attached to the front end of the slide cylinder 11,
The two lenses 13 and 14 fixed to the lens holder 12 move together with the slide cylinder 11. The outer diameter of the front end side of the lens holder 12 is the same as that of the lens body 9, and the bellows 15 is arranged between the lens body 9 and the lens holder 12 so that the front end of the lighting fixture body 1 is rearward. It has the appearance of having the same diameter up to the end. In the bellows 15, a substantially cylindrical guide tool 16 is attached together with the bellows 15 so as to project from the tip of the lens body 9.

A plurality of ribs 9a parallel to the central axis direction are formed on the inner surface of the lens body 9, and the mounting plate is formed of a steel plate in an annular shape.
Reference numeral 17 is attached to the lens body 9 with a screw 18 screwed to the rear end of the rib 9a. The shallow cylindrical fixed cylinder 10
It has an inner flange 10a at its rear end, and is fixed to the mounting plate 17 with a screw 19 screwed into a screw hole formed in the inner flange 10a. Fixed cylinder
The side surface 10c of 10 has mounting screw holes 10d into which mounting screws 22 for mounting the slide cylinder 11 are screwed together at a pitch of 120 degrees.
It is screwed in several places. The slide cylinder 11 is formed in a substantially cylindrical shape, and the cylindrical portion 11a inserted into the fixed cylinder 10 with a diameter slightly smaller than the inner diameter of the fixed cylinder 10 corresponds to the mounting screw hole 10d screwed to the fixed cylinder 10. Mounting screw 2 with a diameter slightly larger than mounting screw 22
Three elliptical slide holes 11b into which the tip ends of the two are inserted are spirally formed. Further, an outer flange 11c is formed at the front end of the slide cylinder 11, and the front end face of the outer flange 11c is fixed to the lens holder 12 by a screw 20 inserted through a screw insertion hole 11d formed in the outer flange 11c. A lens holder 12 is attached to the slide cylinder 11 so as to be brought into contact with the rear end surface of the lens holder 12. An annular groove 12a, which is concentric with the central axis and opens to the rear end side, is provided from the front end of the lens holder 12. The bellows 15 is made of elastic rubber and has an inner collar 15a at the rear end.
Has a substantially cylindrical tip portion 15b and the groove portion 1 of the lens holder 12
The bellows portion 15c is slidably inserted into the lens holder 2a, and the bellows portion 15c contracts due to its elasticity so that the tip of the bellows portion 15c always contacts the lens holder 12 within the movement range of the lens holder 12. As shown in FIG. 4, the guide 16 has a substantially cylindrical shape, has an inner collar 16a at the rear end, and the tip of the cylindrical portion 16b is arranged at a position to be inserted into the groove portion 12a of the lens holder 12. There is. A screw insertion hole 16c is formed in the inner flange 16a of the guide tool 16, and the screw 21 inserted in the screw insertion hole 16c
The inner flange 15a of the bellows 15 is also inserted and screwed into the front end of the rib 9a of the lens body 9, and the bellows 15 is fixed to the lens body 9 together with the guide tool 16.

When using this spotlight with lens, when the lens holder 12 is rotated after mounting it on a mounting surface such as a ceiling with a mounting device (not shown), the lens holder 12 moves forward or backward according to the slide hole 11b of the slide cylinder 11. Then, focus on the irradiation surface and make it emerge with sharp edge light. At this time, the bellows 15 is prevented from being dented or depressed by the guide tool 16.

This lens spotlight has a simple structure,
It is possible to prevent the bellows from denting and falling, and it has a good appearance.

The lamp body 5 and the lens body 9 may be integrally provided without providing the cutter 4. In addition, the lens holder 12
May be integrally provided on the slide cylinder 11. Further, the bellows 15 and the guide tool 16 may be attached to the lens holder 12, or may be separately attached to the lens body 9 and the lens holder 12.

[Effect of device]

Since the present invention is configured as described above, it is possible to provide a spotlight with a lens, which can have a simple structure for the focus adjustment mechanism of a lens, prevent dents and depressions of bellows, and have a good appearance. .

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a partial sectional side view, FIG. 2 is an exploded perspective view of an essential part, and FIG. 3 is a sectional side view of the essential part. FIG. 4 is a perspective view of the guide tool. 5 and 6 are perspective views showing different conventional examples of the present invention. 1 ... Lighting fixture body, 2 ... Lamp part, 3 ... Lens part, 5 ... Lamp part body, 6 ... Socket, 7 ... Lamp, 8 ... Reflector, 9 ... Lens part body, 10 ...... Fixed cylinder, 10d ...... Mounting screw hole, 11 ...... Slide cylinder, 11a ......
Cylindrical part, 11b …… Slide hole, 12 …… Lens holder, 12a
...... Groove, 13, 14 ...... Lens, 15 ...... Bellows, 15c ...
… Bellows, 16 …… Guide tools, 22 …… Mounting screws.

Claims (1)

[Scope of utility model registration request] 1. A substantially cylindrical fixed cylinder in front of a lamp mounted on a main body of a lighting fixture and surrounded by a reflecting mirror, and slidably supported in the fixed cylinder to hold a lens near the front end. The slide cylinder is provided, the mounting screw is screwed into the screw hole provided on the side surface of the fixed cylinder, and the tip of the mounting screw is inserted into the elliptical slide hole provided on the side surface of the slide cylinder. In a lens-equipped spotlight in which the slide cylinder is guided by the mounting screw to move back and forth for focus adjustment, the fixed cylinder and the slide cylinder are housed inside the lens unit main body, and the front end side A lens holder having a diameter substantially the same as that of the lens body is provided at the front end of the slide cylinder so as to protrude outside the lens body, and a bellows having a diameter substantially the same as that of the lens body is provided between the lens body and the lens holder. The inside diameter of the bellows is slightly smaller than the inner diameter of the bellows. Jo guide device with lens spotlight, characterized in that a.