JPS62213003A - Lighting fixture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a lighting fixture equipped with an electronic lighting device.

(Prior Art) For example, incandescent light bulbs such as halogen lamps are generally used to illuminate paintings in museums or spotlights that intensively illuminate products in stores. Since this device does not require parts required for lighting such as a ballast, it can be made compact.

Recently, high-intensity discharge lamps such as small metal halide lamps have been developed, and spotlights have been constructed using these discharge lamps, but these require a ballast.

Then, a ballast with an electronic circuit was developed as a ballast, and it is conceivable that Spotlight Ni could also be equipped with this electronic ballast to make it an integrated ballast.

(Problem to be solved by the invention) However, although electronic ballasts can be made small and lightweight, they are sensitive to heat and have strict temperature regulations, and cannot be used with metal halide lamps or other discharging devices. In order to install it inside a device, it is necessary to take measures such as making the device large and preventing excessive temperature rise.

This type of spotlight is attached to the ceiling, etc., and has an arm that has a rotatable joint so that the irradiation direction can be changed as needed. In the built-in device, in order to balance the device, a U-shaped arm is installed on both sides of the device, and an additional arm is attached to this arm, which makes the structure complicated and makes it difficult to adjust the irradiation direction. There is a possibility that the rotation cannot be performed smoothly when changing.

The present invention was made in consideration of the above-mentioned circumstances, and has a good heat dissipation effect, miniaturization, improved balance of the device, and change of irradiation direction while mounting an electronic ballast on the device body. The purpose of the present invention is to provide lighting equipment that enables smooth operation.

[Structure of the invention]

(Means for Solving the Problems) The lighting equipment of the present invention has an electronic ballast and an electronic ballast on the back side of the equipment body, which has a light projection opening on the front side and has a discharge lamp inside. The electronic lighting device is equipped with a case that houses the electronic ballast, and the mounting arm has a rotatable joint in the middle and is featured by protruding from the top of the case of the electronic lighting device. do.

(Function) Since the electronic lighting device is spaced apart from the appliance body, heat transfer from the discharge lamp to the electronic lighting device is cut off.
Excessive temperature rise of the electronic lighting device can be effectively prevented. and,
Since the arm is attached to the electronic lighting device, the center of gravity is at the rear of the device, allowing for smooth rotation when changing the irradiation direction, and maintaining a stable weight balance.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. 1 is the main body of the device, and this main body l has a light emitting opening 2 on the front side.
It is formed into a rectangular container shape. 3 is a discharge lamp, and this discharge lamp 3 can be a high-intensity discharge lamp such as a double-ended metal halide lamp. 4 is the instrument body 1
It is a reflector placed in the center. Reference numeral 5 denotes an electronic lighting device, and the electronic lighting 5 includes parts necessary for lighting the discharge lamp 3 including heat generating parts such as semiconductor switching elements (1 to not shown).
The device body I includes an electronic ballast 6 equipped with a
It is arranged on the back side of the instrument so as to be spaced apart from the instrument main body l.

The electronic ballast 6 is formed into a rectangular box shape, is attached to a chassis 10 with an insulator 9 on the side, and is covered with a case 8 from above. The electronic ballast 6 is arranged within the case 8 apart from the upper and lower inner surfaces.

The heating element 11 is composed of three metal plates 12 spaced apart from each other and interposed between the appliance body and the electronic lighting device 5.

The above-mentioned appliance main body l, heating element 11 and electronic lighting device j/
lt5 are integrally fixed with screws 30 at a distance from each other with a curler 13 interposed therebetween.

Reference numeral 14 denotes an arm, and the arm 14 has a rotatable joint 15 in the middle. A projecting portion is provided on the upper surface of the case 8 of the electronic lighting device 5. This installation is for arm 14
A plug 16 is provided at the tip of the plug 16 to be connected to a power distribution groove installed on the ceiling, etc.
It is formed so that

Reference numeral 17 denotes a filter provided in the light emitting opening 2 of the device body 1. This filter 17 has an ultraviolet blocking layer on one side of a transparent glass substrate and an infrared blocking layer on the other side to prevent temperature overheating of the irradiated surface. (and also prevents discoloration of the irradiated surface.)

Next, the operation of this embodiment will be explained.

The lighting equipment is connected electrically and mechanically by attaching the plug 6 of the arm 14 to a power distribution track arranged on the ceiling or the like. When the discharge lamp 3 is lit in this state, the heat generated from the lamp 3 is transferred to the appliance body 1 and the electronic lighting device [
Heat transfer is inhibited by the gap formed between the electronic ballast 6 and the heating body 11, and an excessive rise in temperature of the electronic ballast 6 can be effectively prevented.

I7, the irradiation direction is displaced. At that time, install arm 14
is protruded from the upper surface of the electronic lighting device 50 case 8 at the rear of the instrument main body I, so that the center of gravity is located at the rear and the rotation operation can be performed smoothly.

The invention is not limited to a series of embodiments, but allows for substantial modifications. For example, the discharge lamp may be a mercury lamp. Further, the end of the arm may be a mounting seat for mounting. In addition, there is no need for a heating element.

〔Effect of the invention〕

According to the lighting fixture of the present invention, it is possible to bring the generator main body and the electronic lighting device close to each other from the lamp, and the lighting fixture can be made compact. In addition, since the center of gravity when changing the irradiation direction is in the electronic lighting device located at the rear of the device,
Rotation operations can be performed smoothly.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, with FIG. 1 being a partially cutaway side view and FIG. 2 being a perspective view.

Claims (1)

[Claims] (1) A device body with a light projection opening on the front and a discharge lamp inside, an electronic ballast with the necessary parts for lighting the discharge lamp including heat-generating parts, and a case housing the electronic ballast. an electronic lighting device disposed on the back side of the device main body and spaced apart from the device main body; and a mounting arm having a rotatable joint in the middle portion and protruding from the top surface of the case of the electronic lighting device. A lighting equipment characterized by comprising the following.