JPH0594713A - lighting equipment - Google Patents

Abstract

(57) [Abstract] [Objective] To provide a ballast-integrated lighting fixture in which the weight of the entire fixture is balanced without the influence of heat and high frequency noise generated from the discharge lamp on the discharge lamp lighting device. [Structure] A support arm 1 rotates about a vertical rotation shaft 5, and a lamp 6 is supported at the lower end of the support arm 1 so as to rotate in an elevation angle direction. The discharge lamp 11 of the lamp body 6 is mounted at a position sufficiently separated from the rotary shaft 5 of the support arm 1. Between the lower end of the support arm 1 and the mounting portion 2, a case 16 having a built-in discharge lamp lighting device 15 is mounted so that the discharge lamp lighting device 15 is located at a position sufficiently distant from the rotating shaft 5 of the support arm 1. The mounting angle of the case 16 with respect to the support arm 1 is 18 from the discharge lamp 11 of the lamp body 6 around the rotating shaft 5.
Install the discharge lamp lighting device 15 so that it is located at a position rotated by 0 °.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture in which a lighting device is mounted on a rotary down spotlight using a discharge lamp as a light source on the same arm.

[0002]

2. Description of the Related Art Usually, in a down spotlight using a discharge lamp as a light source, a lighting device is embedded in a ceiling surface and only a lamp body is exposed from the ceiling. If the lighting device is embedded in the ceiling in this way, the range of movement of the down spotlight will be limited, so satisfy the demand for changing the layout of the down spotlight due to layout changes. I can't.

Therefore, a lighting device integrally formed with a lamp body is found in Japanese Patent Laid-Open No. 59-119607. In this conventional spotlight, the light control device is integrated with the arm, but since it is mounted on the ceiling surface by using a lighting duct, it can be freely moved within a certain range of the rail. .. However, since the light source of this kind of spotlight is an incandescent lamp, it is not possible to obtain an efficient and highly color-rendering illumination like a discharge lamp.

On the other hand, Japanese Utility Model Laid-Open No. 59-152616 discloses a lighting device integrated with a ballast, which uses a discharge lamp as a light source. In this conventional lighting fixture, a case having a built-in ballast is mounted on a fixture main body having a lamp and a socket.

[0005]

However, in such a ballast-integrated lighting device, since the electronic circuit element forming a part of the ballast is weak against heat, the ballast is affected by the heat generated from the discharge lamp. If received, it may turn on abnormally or may lead to failure. Further, when the discharge lamp is lit at a high frequency, the power line input to the ballast may superimpose high frequency noise from the discharge lamp, which may adversely affect other electric parts. In addition, since the ballast for lighting such a discharge lamp weighs several kilograms, it must be installed with consideration for the balance of the lighting fixtures.If the balance is poor, it will be very unstable when installed on the ceiling, and the arm Torsional stress is applied to the fulcrum of the mounting part, causing deformation of the arm mounting part and leading to the risk of the lighting fixture falling.

The present invention solves the above-mentioned problems, and the discharge lamp lighting device is not affected by the heat and high frequency noise generated from the discharge lamp, and the lighting of a ballast integrated type in which the weight of the lighting fixture is well balanced. The equipment is provided.

[0007]

In order to achieve the above object, the invention according to claim 1 is to provide a supporting arm having a rotating shaft, and a discharge lamp mounted at a lower portion of the supporting arm and at a position apart from the rotating shaft. The lamp includes a lamp body having a socket and a case that is attached to an upper portion of the support arm and that houses a discharge lamp lighting device at a position distant from the rotation axis. Provided is a luminaire mounted on a support arm at a pivoted angle.

According to a second aspect of the present invention, a supporting arm having a rotating shaft, a lamp body attached to a lower portion of the supporting arm and having a socket for mounting a discharge lamp, and an upper portion of the supporting arm for lighting the discharge lamp. A case having a built-in device, the case is attached to a support arm at an angle of 180 ° about a rotation axis from a discharge lamp of a lamp body, a center of gravity is on the support arm, and a lighting is provided with a grip at the position of the center of gravity. Provide the equipment.

According to a third aspect of the present invention, a supporting arm having a rotating shaft, a lamp body attached to a lower portion of the supporting arm and having a socket for mounting a discharge lamp, and an upper portion of the supporting arm are attached to light a discharge lamp. A case having a built-in device, the case being attached to a support arm at an angle of 180 ° pivoting from a discharge lamp of the lamp body about a rotation axis, and the supporting arm having a connecting portion between the case side and the lamp body side. Provide the equipment.

[0010]

According to the luminaire according to the invention of claim 1, heat,
A sufficient distance is provided between the discharge lamp that generates high frequency noise and the discharge lamp lighting device, and a stable weight balance can be obtained with respect to the support arm.

According to the luminaire according to the invention of claim 2,
The center of gravity of the luminaire is located on the grip of the support arm.

According to the lighting equipment of the invention of claim 3,
The support arm is provided with a connecting portion between the case side and the lamp body side.

[0013]

The details of the present invention will be described below with reference to the illustrated embodiments.

The luminaire shown in FIGS. 1 and 2 is used as a down spotlight by attaching a mounting portion to the ceiling surface.

The mounting portion 2 provided on the upper end of the support arm 1 is mounted on the wiring duct 3 installed on the ceiling surface, so that the lighting fixture 4 can be moved within the range where the rails of the wiring duct 3 are installed, and the power feeding is performed. Is also performed by contacting the inner electrode of the wiring duct 3. Further, the mounting portion 2 has a rotation mechanism for rotating the support arm 1 about a vertical rotation shaft 5.

At the lower end of the support arm 1, a lamp body 6 is supported near an irradiation opening 8 of the lamp body by a U-shaped support frame 7 so as to rotate in the elevation direction. The lamp body 6 can freely change the irradiation direction by the rotation of the support frame 7 in the elevation angle direction and the rotation of the support arm 1.

The lamp body includes an irradiation opening 8, a main body 9 and a reflector 1.
0, a discharge lamp 11, and a socket 12. The irradiation opening is composed of a light control body 13 and a light control body mounting frame 14, and in the present embodiment, UV cut glass that reflects ultraviolet rays is used. The reflector 10 is formed in a bowl shape inside the main body 9 and reflects the emitted light of the discharge lamp 11 to the irradiation opening 8. Socket 12 is discharge lamp 11
Is attached to the reflector 10 so as to be optically opposed thereto. The discharge lamp 11 used in this embodiment is a single-base type metal halide lamp, but other discharge lamps of a double-base type may be used. The discharge lamp 11 is mounted at a position sufficiently distant from the rotation shaft 5 of the support arm 1 because the irradiation opening 8 of the lamp body is attached to the rotation shaft 5 of the support arm 1.

Between the lower end of the support arm 1 and the mounting portion 2, a case 16 having a discharge lamp lighting device 15 built therein is provided, and again the discharge lamp lighting device 15 is located at a position sufficiently distant from the rotation shaft 5 of the support arm 1. Mounted on. The mounting angle of the case 16 with respect to the support arm 1 depends on the discharge lamp 11 of the lamp body 6.
Install the discharge lamp lighting device 15 so that the discharge lamp lighting device 15 is located at a position rotated by 180 ° around the rotary shaft 5. By mounting the lamp body 6 and the case 16 on the support arm 1 in this way, the distance between the discharge lamp 11 and the discharge lamp lighting device 15 can be separated to the extent that there is no influence of heat or high frequency noise.
At the same time, it is possible to provide a lighting device with a well-balanced weight.

A grip 18 is formed on the support arm mounting portion 17 of the case 16, and the center of gravity of the lighting fixture is placed on the grip 18 in consideration of the weight of the components of the lighting fixture and the arrangement thereof. Also, inside the grip 18, the power line 1
9, or the input line 20 from the lamp body and the discharge lamp lighting device 1
A connection portion 21 for connecting with 5 is provided, and a part of the grip 18 can be opened and closed to enable connection work.

[0020]

As described above in detail, in the lighting device of the first aspect of the present invention, the discharge lamp lighting device is not affected by heat and high frequency noise generated from the discharge lamp, and the weight of the lighting device is balanced. And a lighting device integrated with a ballast.

In the lighting equipment of the second aspect of the present invention, since the center of gravity of the lighting equipment comes to the grip formed on the support arm, the operability of rotation and movement of the lighting equipment is improved by using this grip. can do.

In the lighting apparatus of the third aspect of the present invention, since a power supply line or a connection part between the input line from the lamp and the discharge lamp lighting device is provided inside the grip, a part of the grip can be opened and closed. Wiring work can be performed by only opening and closing a part of the grip, improving workability.

[Brief description of drawings]

FIG. 1 is a perspective view showing a lighting fixture of this embodiment.

FIG. 2 is a cross-sectional view of a surface that intersects with a rotation axis of the lighting fixture of FIG.

[Explanation of symbols]

Claims (3)

[Claims] 1. A support arm having a rotating shaft; a lamp body attached to a lower portion of the supporting arm and having a socket for mounting a discharge lamp at a position apart from the rotating shaft; and an upper portion of the supporting arm. A case having a discharge lamp lighting device built-in at a position distant from the rotation axis, the case being attached to the support arm at an angle of 180 ° about the rotation axis from the discharge lamp of the lamp body. Lighting equipment characterized by that. 2. A support arm having a rotating shaft; a lamp body attached to a lower part of the support arm and having a socket for mounting a discharge lamp; a discharge arm lighting device built in to an upper part of the support arm. The case is attached to the support arm at an angle of 180 ° about the rotation axis from the discharge lamp of the lamp body, the center of gravity is on the support arm, and a grip is provided at the position of the center of gravity. Lighting equipment that is characterized. 3. A support arm having a rotary shaft; a lamp body attached to a lower portion of the support arm and having a socket for mounting a discharge lamp; a discharge lamp lighting device incorporated to an upper portion of the support arm. The case is attached to the support arm at an angle of 180 ° about the rotation axis from the discharge lamp of the lamp body, and the supporting arm is connected to the case side and the lamp side. A lighting fixture comprising: