JPH11167806A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve efficiency using fluorescent lamps provided with coldest parts, and inhibit a rise in temperature in the coldest parts. SOLUTION: A luminaire 1 is provided with a luminaire body 2 mounted to the ceiling. A lamp socket 4 is fitted to the under surface of the luminaire body 2, and plural fluorescent lamps 6 are concentrically arranged. On the one side of a metal caps 8 of respective fluorescent lamps 6, sizes between the metal caps 8 and filament parts are set to be large, and the coldest parts 11 are formed. The positions of the coldest part 11 of the internal and the external fluorescent lamps 6 are mutually fitted in. The coldest parts 11 are hardly affected by the heat radiated from the adjacent fluorescent lamps 6, thus luminous flux can be prevented from lowering.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lighting apparatus using a fluorescent lamp.

[0002]

2. Description of the Related Art Hitherto, in a lighting fixture using a fluorescent lamp, there has been known a configuration in which the efficiency and the like are improved by controlling the temperature and the position of the coldest part where the tube wall temperature of the fluorescent lamp is lowest.

In order to control the coolest part, a configuration using a dedicated heat radiating component separate from the fluorescent lamp has been proposed. However, there is a problem that the number of components increases and the manufacturing cost increases. Have. Further, in a configuration using a plurality of fluorescent lamps, the coldest part of the fluorescent lamp has a problem that the temperature rises due to the heat radiated by another fluorescent lamp arranged adjacently, and the luminous flux decreases. I have.

[0004]

As described above, in a configuration in which a dedicated heat radiating component separate from the fluorescent lamp is used to control the coldest part, the number of components is increased and the manufacturing cost is increased. Have problems. Further, in a configuration using a plurality of fluorescent lamps, the coldest part of the fluorescent lamp has a problem that the temperature rises due to the heat radiated by another fluorescent lamp arranged adjacently, and the luminous flux decreases. I have.

[0005] The present invention has been made in view of the above points, and it is an object of the present invention to provide a lighting apparatus capable of suppressing a rise in temperature of the coldest part of a fluorescent lamp and securing a luminous flux.

[0006]

According to a first aspect of the present invention, there is provided a lighting apparatus, comprising: an apparatus main body; a plurality of fluorescent lamps each having a coolest portion formed at a predetermined position; And a lamp socket on which a fluorescent lamp is arranged and mounted.

In this configuration, the efficiency is easily improved by using a fluorescent lamp having a coolest portion formed at a predetermined position. Since the coldest portions of the fluorescent lamps adjacent to each other are arranged adjacent to each other, the coldest portions are hardly affected by the heat radiated by the adjacent fluorescent lamps, the rise in temperature is suppressed, and the luminous flux is secured.

[0008] In the lighting apparatus according to the present invention, a plurality of fluorescent lamps are provided in which a coldest portion is formed at a predetermined position, and the coldest portions are gathered at a plurality of predetermined locations and arranged in a frame shape; And a fluorescent lamp located inside the fluorescent lamps arranged in a frame shape, wherein the coldest part is disposed close to a predetermined location. is there.

In this configuration, the efficiency is easily improved by using the fluorescent lamp having the coolest portion formed at a predetermined position. Since the coldest portions of the fluorescent lamps adjacent to each other are arranged adjacent to each other, the coldest portions are hardly affected by the heat radiated by the adjacent fluorescent lamps, the rise in temperature is suppressed, and the luminous flux is secured. Furthermore, the fluorescent lamps arranged inside are arranged inside the fluorescent lamps arranged in a frame, and the coldest part of the fluorescent lamps arranged in the inner side is also close to the coolest part of the fluorescent lamp arranged in a frame. The arrangement density of each fluorescent lamp can be increased while securing the luminous flux of the lamp.

[0010] The lighting fixture according to claim 3 is a lighting fixture main body;
A plurality of fluorescent lamps each having a base and having a coolest portion formed at a predetermined position; and provided on the fixture body, the coolest portion of one fluorescent lamp and the base of another fluorescent lamp Lamp sockets arranged and mounted adjacent to each other.

In this configuration, the efficiency is easily improved by using a fluorescent lamp having a coolest portion formed at a predetermined position. And since the coolest part and the base part of the fluorescent lamps adjacent to each other are arranged adjacent to each other, the coolest part is hardly affected by the heat radiated by the adjacent fluorescent lamps,
The rise in temperature is suppressed, and the luminous flux is secured.

[0012] A lighting device according to a fourth aspect of the present invention includes a lighting device main body;
A fluorescent lamp having a base and a coldest part formed at a predetermined position in the vicinity of the base; and a lamp socket disposed on the fixture body and connected to the base and serving also as a heat radiating means. is there.

In this configuration, since the lamp socket connected to the base also functions as a heat radiating means, a rise in the temperature of the coldest part formed near the base connected to the lamp socket is suppressed, and the luminous flux is reduced. In addition, the structure is not complicated and the manufacturing cost is reduced.

According to a fifth aspect of the present invention, there is provided the lighting apparatus according to any one of the first to fourth aspects, wherein the fluorescent lamp includes an arc tube, a base provided at one end of the arc tube,
It has a filament section connected to the base section and a coolest section located between the base section and the filament section.

With this configuration, a configuration in which the coolest portion is provided at a predetermined position of the arc tube can be easily realized.

[0016] The lighting fixture according to claim 6 is a lighting fixture main body;
A fluorescent lamp; a holder body provided with a mounting part to be attached to the appliance body and a holding part for holding the fluorescent lamp; and a holder arranged on the fluorescent lamp side of the holding part, which is softer than the holder body and more heat than the holder body. A lamp holder provided with a heat conducting means having good conductivity.

In this configuration, since the holding portion of the lamp holder for holding the fluorescent lamp is provided with heat conducting means having better heat conductivity than the holder body, the fluorescent lamp is connected to the fluorescent lamp via the holder body. Is transmitted to the fixture body, and the coolest part is formed in the fluorescent lamp, so that the efficiency of the fluorescent lamp is improved. Further, since the heat conducting means is softer than the holder main body, the fluorescent lamp is protected and the sound at the time of mounting is suppressed. Further, since the lamp holder holding the fluorescent lamp also serves as the heat radiating means, the structure is not complicated, and the manufacturing cost is reduced.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a lighting device according to an embodiment of the present invention.

FIG. 1 is a perspective view showing an embodiment of a lighting apparatus according to the present invention with a shade removed. FIG. 2 is an explanatory diagram of the lighting fixture. FIG. 3 is an enlarged view of a part of the lighting fixture.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a lighting fixture. The lighting fixture 1 includes a ceiling-directed fixture main body 2 which is attached to a ceiling or the like to be attached. The appliance body 2 has a substantially disk-like shape in plan view, and includes a high frequency lighting inverter lighting device, a lighting control device, and the like (not shown). Further, on the lower surface of the fixture main body 2, lamp sockets 4, 4 and lamp holders 5, 5, which are respectively electrically connected to the lighting device, are attached, and annular fluorescent lamps 6, 6 having different diameters are formed. Are mounted concentrically.

Each of the fluorescent lamps 6 has a thin glass luminous tube 7 having a tube diameter of 15 mm to 20 mm and dedicated to high-frequency lighting. A fluorescent film is provided on the inner surface of the luminous tube 7. Inside the arc tube 7, mercury vapor,
Argon gas or the like is sealed. Further, at opposite ends of the arc tube 7, bases 8 electrically and mechanically connected to the lamp socket 4 are provided.
Further, as shown in FIG. 3, electrically connected to a base pin provided on the base part 8 and mechanically supported by the base part 8, near the both ends inside the arc tube 7, Filament portions 9 and 10, which are electrodes, are formed. in addition,
The filament part 9 on one end side is the filament part on the other end side.
The distance from the base 8 is set to be larger than that of the base 10, so that a so-called filament high mount structure is provided. Between the filament 9 and the base 8, the coldest temperature at which the tube wall temperature of the arc tube 7 becomes lowest is obtained. The part 11 is formed and set to optimize the efficiency.

When the fluorescent lamps 6 are mounted on the lamp socket 4, the fluorescent lamps 6 are arranged concentrically adjacent to each other at a predetermined interval. , Are arranged so that the coldest parts 11 are arranged adjacent to each other.

Further, the base 8 of each fluorescent lamp 6 and the case of the lamp socket 4 are made of a material in consideration of insulation, heat resistance, flame resistance, weather resistance, etc., and come into contact with each other. The surface and the like are formed of a high heat conductive resin which is a resin having excellent heat conductivity.

The fixture body 2 is provided with a pair of shade attachment portions 12 on both sides, and engages with the shade attachment portions 12 to provide a semi-translucent property for covering the fixture body 2 and the lower side of the fluorescent lamp 6. A shade (not shown), which is a light control body, is detachably mounted.

According to the present embodiment, the efficiency can be improved without using a separate component or the like by using the fluorescent lamp 6 having the coldest portion 11 formed only at one end in the longitudinal direction, that is, only at one side.

Further, since the coldest portions 11 of the fluorescent lamps 6 are collectively arranged, even when a plurality of fluorescent lamps 6 are arranged close to each other, it is hardly affected by the heat radiated from other fluorescent lamps 6. In addition, it is possible to suppress a decrease in the luminous flux of the fluorescent lamp 6.

Furthermore, since the base 8 and the lamp socket 4 of each fluorescent lamp 6 are made of a highly heat-conductive resin, for example, the surfaces that come into contact with each other are made of heat. Conduction to the appliance body 2 through the socket 4 assists heat radiation efficiently, and the base 8
, The temperature of the coldest part 11 provided near the surface is prevented from rising, whereby the efficiency can be improved and the decrease in the luminous flux at the time of high temperature can be suppressed. In addition, since the temperature of the coldest part 11 can be reduced by using the lamp socket 4, no special parts are required, the structure image can be simplified, and the manufacturing cost can be reduced.

The arrangement and shape of the fluorescent lamp 6 are not limited to the above embodiment, and for example, a straight tube type fluorescent lamp may be used.

FIG. 4 is an explanatory view showing another embodiment of the lighting fixture of the present invention.

That is, as shown in FIG. 4, the fluorescent lamp 6 on the inner peripheral side and the fluorescent lamp 6 on the outer peripheral side are displaced in the circumferential direction by the length of the base 8, and one fluorescent lamp is arranged. By arranging the coldest part 11 of 6 so as to overlap the base 8 of the other fluorescent lamp 6, the coldest part 11 of one fluorescent lamp 6 is hardly affected by the heat radiated by the other fluorescent lamp 6. That is, it is possible to suppress a decrease in the luminous flux of the fluorescent lamp 6.

FIGS. 5 to 7 are bottom views each showing another embodiment of the lighting fixture of the present invention, and FIG. 8 is a side view partially showing the other embodiment of the lighting fixture of the present invention. FIG.

That is, as shown in FIG. 5, a straight tube-shaped fluorescent lamp 6 is arranged in parallel with each other using an appliance main body 2 having a substantially rectangular shape or the like, and provided at one end of each fluorescent lamp 6. The cooling parts 11 are arranged so as to face in the same direction, or, as shown in FIG. In other words, the coolest portions 11 can be collected at two locations in a diagonal direction.

Also in this configuration, by collecting and arranging the coldest parts 11, the temperature rise of the coldest part 11 of the fluorescent lamp 6 can be suppressed, and the decrease of the luminous flux can be suppressed.

Further, as shown in FIG. 7, the four fluorescent lamps 6 are arranged in a substantially rectangular frame shape by collecting the coldest portions 11 at two places, and the fluorescent lamps 6 arranged in the rectangular frame shape are arranged. 6
The two inner fluorescent lamps 6a can be arranged by bringing the coldest part 11 close to the place where the coldest parts 11 of the outer fluorescent lamps 6 are located. The inner fluorescent lamp 6a may be the same as the fluorescent lamp 6 disposed on the outer side, or a fluorescent lamp having a different output and a different shape may be used.

In the configuration shown in FIG.
By collecting and arranging the coolest parts 11, the temperature rise of the coolest part 11 of the fluorescent lamp 6 can be suppressed, and the decrease of the luminous flux can be suppressed. In addition, inside the fluorescent lamps 6 arranged in a frame, the inner arranged fluorescent lamps 6a are arranged, and the coldest portions 11 of the inner arranged fluorescent lamps 6a are also the coldest portions 11 of the fluorescent lamps 6 arranged in the frame shape. , The luminous flux of each of the fluorescent lamps 6, 6a can be secured, the arrangement density of each of the fluorescent lamps 6, 6a can be increased, and the output of the lighting apparatus 1 can be improved.

The straight tube type fluorescent lamp 6 also has a thin glass luminous tube 7 having a tube diameter of 15 mm to 20 mm and dedicated to high frequency lighting. As shown in FIG.
One of the filament portions 9 and 10 of the ferrules 8 and 8 provided at both ends in the longitudinal direction has a so-called filament high-mount structure, and between the filament portion 9 and the ferrule 8,
The coldest part 11 where the tube wall temperature of the arc tube 7 is lowest is formed, and is set so that the efficiency is optimized.

Further, with respect to the lamp sockets 4 of the fluorescent lamps 6 of the straight tube type, the surfaces of the base 8 and the lamp sockets 4 on the coldest part 11 side which are in contact with each other are formed of a high heat conductive resin. The heat in the vicinity of the base 8 is conducted to the fixture main body 2 through the base 8 and the lamp socket 4 to efficiently assist the heat radiation.
, The temperature of the coldest part 11 provided near the surface is prevented from rising, whereby the efficiency can be improved and the decrease in the luminous flux at the time of high temperature can be suppressed. In addition, since the temperature of the coldest part 11 can be reduced by using the lamp socket 4, no special parts are required, the structure image can be simplified, and the manufacturing cost can be reduced.

It should be noted that a mark indicating the mounting direction of each fluorescent lamp 6 may be printed or stamped on the lamp socket 4 or the fixture body 2. Further, by changing the shapes of the base 8 and the lamp socket 4 of each fluorescent lamp 6, the fluorescent lamps 6 can be mounted on the lamp socket 4 only in a correct mounting direction.

Further, the coldest part can be formed in the fluorescent lamp by using a lamp holder used in a lighting fixture using the fluorescent lamp.

FIGS. 9 to 13 are partial cross-sectional views showing another embodiment of the lighting fixture of the present invention.

In each of the configurations shown in FIGS. 9 to 13, the apparatus main body (chassis) 2 and the like have the same shape as the configuration shown in FIG. 1, and are provided with an annular fluorescent lamp and a shade. It is designed to be attached.

That is, as shown in FIG. 9, the lamp holder 15 is disposed on the opposite side of the base of the fluorescent lamp, ie, the lamp socket, that is, substantially diagonally, and holds the light emitting tube of the fluorescent lamp. A holder main body 16 formed of a metal plate having predetermined elasticity and rigidity is provided. The holder main body 16 includes a mounting portion 21 fixed to the appliance main body 2 using screws 18 and the like, a substantially arc-shaped holding portion 22 for holding the fluorescent lamp, and the mounting portion 21 and the holding portion 22. Are integrally formed with the arm 23 that connects the two. Further, between the mounting part 21 and the fixture main body 2 and between the holding part 22 and the tube surface of the fluorescent lamp, a heat conductive silicon 25 as a heat conductive means is provided by coating or coating. I have.

FIG. 10 shows another embodiment. Unlike the structure shown in FIG. 9, only the holding portion 22 is provided with a heat conductive silicon 25 on the entire peripheral surface thereof by coating or the like.

FIG. 11 shows another embodiment, which is different from the structure shown in FIG. 9 or FIG. 10 in that a heat conductive silicon 25 is coated on the entire peripheral surface.

FIG. 12 shows another embodiment, in which the holder body 16 is made of aluminum, and a heat conductive plastic 27 as heat transfer means is integrally formed on the entire outer peripheral surface. I have.

According to the configuration shown in FIGS. 9 to 12, the lamp body is made of a stainless steel holder main body 16 in comparison with a configuration in which powder coating for suppressing the collision sound with the fluorescent lamp is applied. The heat conduction of the holder 15 is improved, the heat of the fluorescent lamp is efficiently released, and the coldest part can be formed in the fluorescent lamp.

At least a portion of the holding portion 22 of the metal holder body 16 which comes into contact with the fluorescent lamp is made of heat conductive silicon 25 which is softer than metal such as stainless steel or aluminum.
Alternatively, since the fluorescent lamp is covered with a coating or the like with the heat conductive plastic 27, the fluorescent lamp can be protected, and the noise when attaching the fluorescent lamp can be suppressed. further,
9 to 11, the heat dissipating effect can be improved by using a metal having good thermal conductivity such as aluminum.

By using the lamp holder 15 as a heat radiating means for forming the coldest part, there is no need to use other dedicated parts, and the manufacturing cost can be reduced.

As shown in FIG. 13, the lamp holder 15 having the mounting portion 21, the holding portion 22, and the arm portion 23 is
The same effect can be achieved by integrally forming the heat conductive plastic 27.

[0050]

According to the lighting apparatus of the first aspect, the efficiency can be easily improved by using the fluorescent lamp having the coolest part formed at a predetermined position. Since the coldest portions of the fluorescent lamps adjacent to each other are arranged adjacent to each other, the coolest portions are hardly affected by the heat radiated by the adjacent fluorescent lamps, and a rise in temperature can be suppressed and a luminous flux can be secured.

According to the lighting apparatus of the second aspect, by using the fluorescent lamp having the coolest portion formed at a predetermined position,
Efficiency can be easily improved. And since the coldest parts of the fluorescent lamps adjacent to each other are arranged adjacent to each other, the coldest parts are hardly affected by the heat radiated by the adjacent fluorescent lamps,
A rise in temperature can be suppressed, and a luminous flux can be secured. Furthermore, the fluorescent lamps arranged inside are arranged inside the fluorescent lamps arranged in a frame, and the coldest part of the fluorescent lamps arranged in the inner side is also close to the coolest part of the fluorescent lamp arranged in a frame. The arrangement density of each fluorescent lamp can be increased while securing the luminous flux of the lamp.

According to the lighting apparatus of the third aspect, by using the fluorescent lamp having the coolest part formed at a predetermined position,
Efficiency can be easily improved. And, since the coldest part and the base part of the fluorescent lamps adjacent to each other are arranged adjacent to each other, the coolest part is hardly affected by the heat radiated by the adjacent fluorescent lamps, suppressing the rise in temperature and reducing the luminous flux. Can be secured.

According to the fourth aspect of the present invention, the lamp socket connected to the base also serves as a heat radiating means, so that the temperature of the coldest part formed near the base connected to the lamp socket rises. Can be suppressed, the luminous flux can be secured, and the structure is not complicated, and the manufacturing cost can be reduced.

According to the lighting apparatus of the fifth aspect, in addition to the effects of any one of the first to fourth aspects, it is possible to easily realize a configuration in which a coolest portion is provided at a predetermined position of the arc tube.

According to the illuminating device of the present invention, since the holding portion of the lamp holder for holding the fluorescent lamp is provided with the heat conducting means having better heat conductivity than the holder main body, the holder main body is moved from the heat conducting means to the holder main body. The heat of the fluorescent lamp is transmitted to the main body of the fixture through the through hole, and the coolest part is formed in the fluorescent lamp, thereby improving the efficiency of the fluorescent lamp. Further, since the heat conducting means is made softer than the holder main body, the fluorescent lamp can be protected and the sound at the time of mounting can be suppressed. And the lamp holder holding the fluorescent lamp also serves as a heat radiating means,
The structure is not complicated, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lighting fixture according to an embodiment of the present invention with a shade removed.

FIG. 2 is an explanatory diagram of the lighting fixture.

FIG. 3 is an enlarged view of a part of the lighting fixture.

FIG. 4 is an explanatory view showing another embodiment of the lighting fixture of the present invention.

FIG. 5 is a bottom view showing another embodiment of the lighting fixture of the present invention.

FIG. 6 is a bottom view showing another embodiment of the lighting fixture of the present invention.

FIG. 7 is a bottom view showing another embodiment of the lighting fixture of the present invention.

FIG. 8 is a partially omitted side view showing another embodiment of the lighting fixture of the present invention.

FIG. 9 is a partial cross-sectional view showing another embodiment of the lighting fixture of the present invention.

FIG. 10 is a partial cross-sectional view showing another embodiment of the lighting fixture of the present invention.

FIG. 11 is a partial cross-sectional view showing another embodiment of the lighting fixture of the present invention.

FIG. 12 is a partial sectional view showing another embodiment of the lighting fixture of the present invention.

FIG. 13 is a partial cross-sectional view showing another embodiment of the lighting fixture of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Fixture main body 4 Lamp socket 6 Fluorescent lamp 6a Fluorescent lamp arranged inside 7 Arc tube 8 Cap part 9 Filament part 11 Coolest part 15 Lamp holder 16 Holder body 21 Mounting part 22 Holding part 25 Heat conduction as heat conduction means Silicon 27. Thermal conductive plastics as a means of thermal conduction.

Claims (6)

[Claims] 1. A fixture main body; a plurality of fluorescent lamps having a coolest part formed at a predetermined position; and a lamp socket arranged on the fixture main body and arranged to mount a fluorescent lamp such that the coolest parts are adjacent to each other. And a lighting fixture comprising: 2. A plurality of fluorescent lamps, each having a coolest portion formed at a predetermined position and being collected at a plurality of predetermined positions and arranged in a frame shape; and forming a coolest portion at a predetermined position. ,And,
An inside-placed fluorescent lamp, which is located inside the frame-shaped fluorescent lamp and whose coolest part is located close to a predetermined location;
A lighting fixture comprising: A plurality of fluorescent lamps each having a base portion and having a coolest portion formed at a predetermined position; and a plurality of fluorescent lamps disposed on the device body, wherein the fluorescent lamps are provided with a coolest portion of one fluorescent lamp;
A lamp socket to be mounted such that bases of other fluorescent lamps are arranged adjacent to each other. A fluorescent lamp having a base and a coldest part formed at a predetermined position near the base; a lamp socket disposed on the base and connected to the base and also serving as a heat radiating means; And a lighting fixture comprising: 5. A fluorescent lamp comprising: an arc tube; a base provided at one end of the arc tube; a filament connected to the base; and a filament located between the base and the filament. The lighting device according to claim 1, further comprising a cooling unit. 6. An apparatus main body; a fluorescent lamp; a holder main body provided with a mounting portion attached to the apparatus main body and a holding section for holding the fluorescent lamp; and a holder arranged on the fluorescent lamp side of the holding section and being softer than the holder main body. And a lamp holder provided with a heat conducting means having better heat conductivity than the holder main body.