JPH05234404A - Spot light - Google Patents

Abstract

PURPOSE:To make the light axes coincidence with each other before and behind division and assembling, in a spot light wherein a rear case having a light source and a front case equipped with a projecting lens are provided freely divisible. CONSTITUTION:In a spot light wherein a rear case 4 having a light source 1 equipped integrally with a reflector and a front case 10 equipped with a projecting lens system 2 are provided freely divisible, the socket 5 of the light source part 1 is provided, in oscillation type by an elastic supporting means, at the socket mounting disc 7 of the rear case 4. On the other hand, the front case 10 is provided a regulation frame 20 which regulates the axis of the projection light of the light source 1 to conform to the light axis of the projection lens 2 system, being in contact with the reflector of the light source 1.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to spotlights.

2. Description of the Related Art Conventionally, a rear case having a light source unit integrally provided with a light bulb at the center of a reflecting mirror and a front case having a projection lens system are provided so as to be hingedly separable, and the case is divided from the middle. As a result, a spotlight configured to easily perform various operations such as assembling, replacement, repair and inspection of the built-in light source, projection lens, variable mask device, cooling fan, etc. is disclosed, for example, in Japanese Examined Patent Publication No. 3-11481. Have already been proposed by the inventor of the present application as described in.

[Problems to be Solved by the Invention]

The problem in this case is that the optical axis of the projection optical system of the spotlight is set by dividing the case of the spotlight into a rear case having a light source section and a front case having a projection lens system. Since the light source section and the projection lens system are divided, there is a risk that their optical axes will not coincide with each other before and after division and assembly, and there is a problem that a sharp projected image of the spotlight cannot be obtained. Further, the conventional spotlight is considerably large because the heat generated by the light source is cooled by the cooling fan, but in order to reduce the size of the spotlight, the cooling fan is removed and no other space is taken. Cooling means must be provided in the case.

[Means for solving problems]

Therefore, the present invention provides a spotlight in which a rear case having a light source unit integrally provided with a light bulb at the center of a reflecting mirror and a front case having a projection lens system are provided so as to be separable. A socket for a light source unit integrally provided with a light bulb at the center of the lamp housing is swingably mounted on a socket mounting plate of a rear case by elastic supporting means, while a lamp house for covering the light source unit is provided in the front case, and the lamp house. The present invention provides a spotlight, in which a regulation frame is provided, which is in contact with a reflecting mirror of the light source section and regulates the projection optical axis of the light source section so as to coincide with the optical axis of the projection lens system. Further, the present invention is the above spotlight,
The present invention provides a spotlight in which a socket of a light source unit is supported on a socket mounting plate by a leaf spring in a swinging manner. Furthermore, the present invention provides a spotlight in which a rear case having a light source unit integrally provided with a light bulb in the center of a reflecting mirror and a front case having a projection lens system are provided so as to be separable. The lamp house that covers the light source part is provided, and the cooling hole is provided in the lamp house part that covers the upper and lower parts of the light source part, while the front case equipped with the lamp house is converted to the rear case by changing the installation angle by 90 degrees around the projection optical axis. The present invention provides a spotlight that can be attached.

[0004]

According to the spotlight of the present invention having the above-mentioned structure, the rear case having the light source unit integrally provided with the light bulb at the center of the reflecting mirror and the front case having the projection lens system are provided so as to be separable. In this spotlight, when the divided rear case and front case are assembled, the reflecting mirror of the light source section provided with the socket provided in the socket mounting plate of the rear case in a swinging manner by the elastic supporting means becomes the light source of the front case. Since the projection optical axis of the light source unit is brought into contact with the regulation frame in the lamp house that covers the portion and the optical axis of the projection lens system is aligned, the rear case having the light source unit and the projection lens system are provided. In the spotlight in which the front case and the front case are freely separable, the optical axes of the spotlights coincide with each other before and after the division and assembly, and a sharp projected image of the spotlight can be obtained.

Further, according to the present invention, in the above-mentioned spotlight, when the socket of the light source section is supported by a leaf spring on the socket mounting plate in a swinging manner, when divided,
While supporting the socket safely, at the time of assembly, the reflector provided in the socket elastically abuts on the regulation frame in the lamp house of the front case, ensuring that the projection optical axis of the light source unit is aligned with the optical axis of the projection lens system. It has the effect of causing the heat generation of the light source section to be dissipated while matching them. Further, according to the present invention, the front case provided with the lamp house provided with the cooling holes above and below the light source section is provided so that it can be attached to the rear case by changing the installation angle by 90 degrees around the projection optical axis. When the light is attached to the wall surface or the like and the direction of light projection is adjusted to the left or right, the cooling holes may be located on the left and right of the light source, and a sufficient cooling effect cannot be obtained. The cooling hole can be arranged so as to be always oriented in the vertical direction by mounting the front case by changing the mounting angle of 90 degrees around the projection optical axis to the object to be projected.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the drawings. Reference numeral 1 is a light source portion integrally provided with a light bulb in the center of a reflecting mirror, and an outer frame portion 1a of the reflecting mirror is a lens barrel of a projection lens system 2. The light source unit 1 can be installed at a position that coincides with the light projecting axis by installing the light source unit 3 at a concentric position centered on the light projecting axis. Reference numeral 7 denotes a socket mounting board provided on the front surface of the rear case 4 having the transformer 6 built therein and also serving as a lid of the case 4. The socket 5 of the light source unit 1 is swung by an elastic support means such as a leaf spring 8 on the socket mounting board 7 so that the projection axis of the projection lens system 2 and the optical axis of the light source unit 1 can coincide with each other. It is provided in. In the case of the embodiment, the leaf spring 8 has a planar shape as shown in FIG.
d is integrally fixed to the socket mounting board 7 by a fixing screw 13 which is inserted through the mounting hole 8a, and is fixed to the front surface of the socket 5 by a fixing screw 14 which is curved in the support spring portion 8b and is inserted through the mounting hole 8c. Configured. As shown in FIG. 5, the socket mounting board 7 is provided with a mounting hole 7a that matches with the mounting hole 8a of the leaf spring 8 and also inserts a power supply cable for loosely connecting the transformer 6 and the socket 5. The hole 7b is provided so as to be inclined.

Further, the socket mounting board 7 is provided with mounting holes 9 at concentric positions with an angle interval of 90 degrees about the light projecting axis O, and the mounting angle is set on the front surface of the rear case 4 at an angle of 90 degrees. It is removably attached by a fixing means such as a fixing screw so as to be convertible. A front case 10 is composed of a lens barrel 3 having the projection lens system 2 and a lamp house 11 that covers the periphery of the light source unit 1, and is detachably attached to the rear case 4. In the case of the embodiment, as a separable mounting means, as shown in FIG. 5, the socket mounting plate 7 is provided with a large hole portion continuous in an arc shape and a small hole portion at a position point-symmetrical with respect to the projection axis O. While a mounting hole 15 consisting of a hole portion and an arc-shaped guide groove 16 are provided, a hook-shaped fitting hook member 17 and a guide protrusion 18 are provided at a position adjacent to the socket mounting plate 7 of the lamp house 11. And a fitting hook member 17 is engaged with the mounting hole 15 and a guide protrusion 18 is engaged with the guide groove 16 to rotate the light around the light projecting axis O in a fixed direction or a detached direction. It is configured so that it can be detachably fixed.

In the lamp house 11, the projection optical axis of the light source section 1 is regulated so as to be in contact with the outer frame section 1a of the reflecting mirror of the light source section 1 so as to coincide with the optical axis of the projection lens system 2. A regulation frame 20 is provided. The regulation frame 20 is provided with a regulation frame portion which is in contact with the outer frame portion 1a which is concentric with the optical axis of the projection lens system 2 as a center. The regulation frame 20 is
The lamp house may be formed integrally with the heat-resistant synthetic resin, but it may be formed as a heat-resistant metal or synthetic resin part and integrally attached to the lamp house during assembly.

The lamp house 1 that covers the light source unit 1
1, cooling holes 21 are provided between the fin-shaped portions 19 of the lamp house that cover the upper and lower sides of the light source unit 1. On the other hand, when the cooling holes 21 are positioned on the left and right depending on how the rear case 4 is attached to the ceiling surface or wall surface, the front case 10 including the lamp house 11 is projected as described above. By changing the 90-degree mounting angle around the optical axis and mounting it on the rear case 4, the cooling hole 21 can be set in the vertical direction in which the cooling effect is enhanced. In addition, 12 is a framing knob of a framing device provided at the focal position of the projection lens system 2, and the shape, pattern, etc. of the projected image of the spotlight can be variably adjusted.
Further, 22 is a support for the rear case 4, which allows the support nut 22 to be bent in the up-down direction by loosening the knob nut 23, and has an axial center with respect to a fixed base 24 that fixes the support 22 to the ceiling or the like. It is configured so that it can rotate around to set the projection direction. Also, 25
Is a light shielding plate provided around the light source unit 1, and 26 is a fixing screw thereof.

A usage mode of the spotlight according to the present invention having the above-mentioned structure will be described. In the assembled spotlight, the front case 10 is opposed to the rear case 4.
5, is rotated counterclockwise around the light projecting axis O, the hook-shaped fitting hook member 17 projecting from the lamp house 11 of the front case 10 is brought into contact with the socket mounting board 7. The mounting hole 15 can be moved from the small hole portion which has been engaged up to that time to the large hole portion and can be pulled out forward along the projection axis to release the engagement, and the mounting hole 15 can be divided. In the split state, when the fitting hook member 17 of the lamp house 11 is fitted into the large hole portion of the mounting hole 15 of the socket mounting board 7 and rotated in the clockwise direction, the small hook portion is engaged and fixed. Was
The outer frame portion 1a of the reflecting mirror of the light source portion 1 in which the socket 5 is elastically supported in a swinging manner by the leaf spring 8 can be brought into an assembled state, and the regulation frame 20 in the lamp house 11 Is elastically abutted to, and the projection optical axis of the light source unit 1 is regulated so as to match the optical axis of the projection lens system 2,
A clear projected image can be obtained.

When the support column 22 of the rear case 4 is horizontally attached to a wall surface or the like and the knob nut 23 is loosened to adjust the light projection direction to the left or right, the cooling hole 21 of the lamp house 11 is set in the light source section 1. In such a case, the front case 10 is divided, but in such a case, the front case 10 is divided, and the four corners of the socket mounting board 7 are concentrically positioned at an angular interval of 90 degrees about the projection axis O. The fixing means such as a fixing screw which is screwed into the mounting hole 9 provided in the socket is removed, and the mounting angle of the socket mounting board 7 is changed at an angle of 90 degrees with respect to the front surface of the rear case 4 so that the fixing screw or the like is removed. When the lamp house 11 is reattached to the socket mounting board 7 after being fixed again by the fixing means, the cooling hole 21 can be converted and installed so as to face the vertical direction.

[0012]

As described above, according to the spotlight of the present invention having the above-described structure, the rear case having the light source unit integrally provided with the light bulb at the center of the reflecting mirror and the front case having the projection lens system are provided. In the spotlight in which the socket is divided, the socket for the light source is provided on the socket mounting plate of the rear case in a swinging manner by elastic supporting means,
A lamp house that covers the light source unit is provided in the front case, and the projection optical axis of the light source unit is regulated so as to abut the reflecting mirror of the light source unit in the lamp house so as to coincide with the optical axis of the projection lens system. Since the rear case and the front case are assembled by dividing the rear case, the reflecting mirror of the light source unit having the socket pivotally provided by the elastic supporting means on the socket mounting plate of the rear case is provided. Since the projection optical axis of the light source unit comes into contact with the regulation frame in the lamp house provided to cover the light source unit of the front case, and the projection optical axis of the light source unit coincides with the optical axis of the projection lens system, the rear case having the light source unit, In a spotlight in which a front case provided with a projection lens system is provided so as to be split, the optical axes of the spotlight are aligned before and after splitting and assembling, and a sharp projected image of the spotlight can be obtained.

Further, according to the present invention, in the above-mentioned spotlight, when the socket of the light source section is supported by a plate spring on the socket mounting plate in a swinging manner, when divided,
While supporting the socket safely, at the time of assembly, the reflector provided in the socket elastically abuts on the regulation frame inside the lamp house of the front case, and the projection optical axis of the light source part is made to have a simple structure by the projection lens system. It has an effect of surely matching the axis and a cooling effect of radiating the heat generation of the light source unit. . Further, according to the present invention, the front case provided with the lamp house provided with the cooling holes above and below the light source is provided so that it can be attached to the rear case by changing the installation angle by 90 degrees around the projection optical axis. When the light is attached to a wall surface or the like and the direction of light projection is adjusted to the left or right, the cooling holes may be located on the left and right of the light source, and a sufficient cooling effect cannot be obtained. Since the front case has a structure in which the mounting angle can be changed by 90 degrees around the projection optical axis and attached to an object to be projected, the cooling holes are always arranged so as to be oriented in the vertical direction. It is possible to eliminate the need for a considerably large cooling fan that was required to cool the heat generated by the light source in the conventional spotlight, and to eliminate the space. There is an effect of providing a door.

[Brief description of drawings]

FIG. 1 is a partially longitudinal front view showing a usage mode of an embodiment of a spotlight of the present invention.

FIG. 2 is a left side view thereof.

FIG. 3 is a partial cross-sectional plan view schematically showing a cross section of a main part thereof.

FIG. 4 is a front view of the main part.

FIG. 5 is a side view of another main part.

FIG. 6 is a development view showing an embodiment of another main part in an expanded manner.

[Explanation of symbols]

 1 ... Light source 2 ... Projection lens system 3 ... Lens barrel 4 ... Rear case 5 ... Socket 6 ... Transformer 7 ... Socket mounting board 8・ ・ ・ ・ Leaf spring 9 ・ ・ ・ ・ ・ ・ Mounting hole 10 ・ ・ ・ Front case 11 ・ ・ ・ Lamp house 12 ・ ・ ・ Framing knob 13 ・ ・ ・ Fixing screw 14 ・ ・ ・ Fixing screw 15 ・ ・ ・ Mounting hole 16・ ・ ・ Guide groove 17 ・ ・ ・ Fitting hook member 18 ・ ・ ・ Guide protrusion 19 ・ ・ ・ Fin-shaped portion 20 ・ ・ ・ Restriction frame 21 ・ ・ ・ Cooling hole 22 ・ ・ ・ Post 23 ・ ・ ・ Knob nut 24 ... Fixed base 25 ... Light-shielding plate 26 ... Fixing screw

Claims (3)

[Claims] 1. In a spotlight in which a rear case having a light source unit integrally provided with a light bulb in the center of a reflecting mirror and a front case having a projection lens system are separately provided, a socket of the light source unit is rearward. The socket mounting plate of the case is provided in a swinging manner by elastic supporting means, while the front case is provided with a lamp house for covering the light source part, and the lamp house is abutted against the reflection mirror of the light source part in the lamp house. A spotlight provided with a regulation frame that regulates the projection optical axis so that it coincides with the optical axis of the projection lens system. 2. The spotlight according to claim 1, wherein the socket of the light source unit is supported by a leaf spring on a socket mounting plate in a swinging manner. 3. A spotlight in which a rear case having a light source unit integrally provided with a light bulb in the center of a reflecting mirror and a front case having a projection lens system are separably provided, and the light source unit is provided in the front case. While the lamp house that covers the lamp housing is provided and cooling holes are provided in the lamp house that covers the top and bottom of the light source unit, the front case equipped with the lamp house is attached to the rear case by changing the installation angle by 90 degrees around the projection optical axis. Spotlights that can be installed.