JPH0982130A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the tube wall temperature of a fluorescent lamp and improve the total efficiency. SOLUTION: A pull cord lever 41 for guiding a pull cord 22 is formed of metal, and a radiating fan 46 is provided thereon. The part separated from a base part of a fluorescent lamp L1 is held by a radiating holder 27 fixed to an equipment body 14. The radiating holder 27 is connected to the pull cord lever 41. The tube wall temperature of the fluorescent lamp L1 is lowered to form a lamp coldest part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device having a drawstring guide for guiding a drawstring of a switch.

[0002]

2. Description of the Related Art Conventionally, for example, JP-A-4-345715.
As described in Japanese Patent Publication No. JP-A-2003-264, in a lighting device including a switch in which a drawstring for operation is drawn, a configuration including a drawstring guide body that guides the drawstring in order to vertically hang the drawstring on the side of the fixture body. It has been known. The drawstring guide body is formed by bending a wire spring material into a V-spring shape, and is attached by being locked in an attachment hole formed on the upper surface of the instrument body.

On the other hand, in order to make the luminaire thinner and smaller, for example, in a luminaire using a fluorescent lamp, the power consumption is 40 W to 65 W and the outer diameter of the tube is 25.5 mm.
There is known a configuration in which the following fluorescent lamp is arranged close to the instrument body, or the fluorescent lamp is housed in a recess formed in the instrument body. However, in such a configuration, when the tube wall temperature of the lamp rises, the lamp power decreases due to the characteristics of the inverter device, the total luminous flux decreases, and the overall efficiency (lm / W) with respect to the luminous efficiency of the fluorescent lamp decreases. It has problems such as deterioration.

[0004]

As described above, in order to reduce the thickness and size of the lighting fixture, effective heat dissipation of the member that generates heat is required. When it rises, there is a problem that the lamp power is lowered, the total luminous flux is lowered, and the overall efficiency (lm / W) with respect to the luminous efficiency is lowered.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a luminaire having a drawstring guide body for guiding the drawstring of a switch and enhancing the heat radiation effect.

[0006]

A lighting fixture according to claim 1, wherein a fixture main body; a switch provided on the fixture main body and provided with a drawstring; a lamp holder for holding a fluorescent lamp; and a lamp holder for the lamp holder. And a drawstring guide body formed of a heat radiating body, which is connected to the device main body and guides the drawstring.

In this structure, the heat of the fluorescent lamp is transmitted to the drawstring guide through the lamp holder, and is efficiently radiated from the drawstring guide protruding from the main body of the fixture.

A lighting fixture according to a second aspect is the lighting fixture according to the first aspect, wherein the lamp holder is in contact with a portion of the fluorescent lamp which is separated from the base portion.

With this structure, the portion of the fluorescent lamp which is separated from the base portion is effectively cooled, and the coldest portion of the lamp is formed.

A lighting fixture according to a third aspect of the present invention is the lighting fixture according to the first or second aspect, which is provided with a plurality of lamp holders each connected to the drawstring guide body.

In this structure, the plurality of lamp holders effectively cool the plurality of fluorescent lamps or the plurality of locations of the fluorescent lamps.

According to a fourth aspect of the present invention, in the lighting fixture according to any one of the first to third aspects, the fluorescent lamp has a tube outer diameter of 25.5 mm or less.

With this structure, the pipe outer diameter is 25.5.
The use of fluorescent lamps of mm or less enables thinning of lighting equipment. Further, the rise in the temperature of the pipe wall caused by the outer diameter of the pipe being 25.5 mm or less is effectively suppressed by the heat radiation from the drawstring guide.

A luminaire according to claim 5 is the luminaire according to any one of claims 1 to 4, wherein the luminaire main body is
It is provided with a recess for accommodating a fluorescent lamp.

With this structure, the fluorescent lamp can be housed in the recess of the main body of the apparatus, so that the lighting apparatus can be made thinner. Further, the rise in the temperature of the tube wall caused by housing the fluorescent lamp in the recess of the instrument body is effectively suppressed by the heat radiation from the drawstring guide.

According to a sixth aspect of the present invention, there is provided the lighting fixture according to any one of the first to fifth aspects, wherein the drawstring guide body is provided so as to be movable back and forth with respect to the main body of the device, and the moving direction is the longitudinal direction. It has a ridge.

Further, in this structure, the heat dissipation effect is improved by the ridge, and the ridge is used to guide the advance / retreat of the drawstring guide body.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a lighting equipment of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial explanatory view showing an embodiment of a lighting equipment of the present invention, and FIG. 2 is a sectional view of the lighting equipment.

In FIG. 1 and FIG. 2, 11 is a lighting fixture, and this lighting fixture 11 is a ceiling surface as a mounting surface.
Directly installed on 12. Further, the lighting fixture 11 includes a metallic fixture body 14, which is provided with a chassis body 15 having a substantially box shape with an open lower surface and a reflector 16 having a flat and substantially conical shape. It is configured in combination with.

The chassis body 15 has a substantially cylindrical shape with an open bottom surface, and a lighting device such as an inverter device including a switch 21 is housed inside the chassis body 15. The switch 21 is a so-called pull switch in which the drawstring 22 is drawn out in the horizontal direction.
The lighting state changes each time you pull. In addition, the operator 23 for grasping is provided at the tip of the drawstring 22.
Is attached.

On the other hand, the reflector 16 has a flat conical shape that widens upward, and the lower surface of the reflector 16 serves as a reflecting surface. Further, a plurality of lamp holders 26 are attached to the reflector 16 downward, and the tube walls of the two annular fluorescent lamps L1 and L2 having different rated powers are made elastic by these lamp holders 26. And is concentrically supported in the vicinity of the lower surface of the reflector 16.

Further, a pair of heat dissipation holders 27 as lamp holders are formed on the reflector 16 along the lead-out direction of the drawstring 22 and are made of a material, such as metal such as iron, which is a heat dissipating material, for transmitting heat well. Is attached. The heat-dissipating holder 27 comes into planar contact with the tube walls of the fluorescent lamps L1 and L2, and elastically clamps and holds the tube walls.
31 and a mounting portion 32 fixed to the reflector 16 with screws or the like. Further, a connecting portion 33 is integrally provided so as to project upward from the mounting portion 32, and the connecting portion 33 is
It projects through the through hole 35 formed in the reflector 16 to the upper side of the reflector 16, and the upper and lower ends of the connecting portion 33 have the front and rear ends with respect to the pulling direction of the drawstring 22 inclined upward. A sliding contact plate 36 that is bent so that it is attached is attached.

The heat-dissipating holder 27 faces the base portion farthest from the base portions of the fluorescent lamps L1 and L2, that is, in the annular fluorescent lamps L1 and L2, the base portions of the fluorescent lamps L1 and L2 are sandwiched by the axis of the circular ring. It is designed to clamp and hold the pipe wall of a part.

Further, on the upper side of the reflector 16, a drawstring lever 41 as a drawstring guide is arranged along the pulling direction of the drawstring 22. The drawstring lever 41 is formed of a material such as metal such as iron that conducts heat well, and has a substantially rectangular flat substrate portion having a curved front end in the pulling direction of the drawstring 22.
Has 42. Then, in the board portion 42, a connection hole portion 43 having an elongated hole shape is formed along the longitudinal direction at the center portion in the width direction, and the connection hole portion 43 is located on the front side of the connection hole portion 43. A drawstring through hole 44 having a circular hole shape is formed. Further, a plurality of rows of heat radiation fins 46 as protrusions are formed on the upper portion of the substrate portion 42 along the longitudinal direction of the substrate portion 42.

The drawstring lever 41 is provided in the instrument body 14
The pair of engaging support portions 51, 51 provided on both sides of the reflector 16 slidably engage the heat radiation fins 46 on both sides of the connection hole portion 43,
It is supported so as to be able to move forward and backward in the front-rear direction, that is, in the direction approaching and separating from the central portion of the instrument body 14 along the pull-out direction of the drawstring 22. In addition, the connection part 33 of each heat dissipation holder 27 is inserted into the connection hole part 43, and the sliding contact plate fixed to the upper part of the connection part 33.
The 36 is slidably in contact with the upper surface of the connection hole 43 near the edges on both sides. Further, a locking projection 53 projecting from the reflector 16 is inserted into the front side portion of the connection hole 43 to regulate the retracted limit position of the drawstring lever 41.

Then, the drawstring 22 led out laterally from the switch 21 is inserted into the drawstring through hole 44 of the drawstring lever 41 from above and is vertically installed below the drawstring through hole 44 to pull the drawstring 22. The lighting state of the fluorescent lamps L1 and L2 can be switched for each operation such as turning on and off.

A shade is attached to the lower side of the instrument main body 14 as needed so that the portion other than the vicinity of the tip of the drawstring lever 41 is covered.

Further, the heat of the tube wall of each of the fluorescent lamps L1 and L2 is dissipated from the holder 31 which is in contact with the tube wall and the holder 27 for heat dissipation.
To the drawstring lever 41 from the sliding contact plate 36 of the heat dissipation holder 27, and is dissipated to the outside air from the metal drawstring lever 41 projecting outside the instrument body 14 and provided with the heat dissipation fins 46. It is supposed to be done.

As described above, according to the present embodiment, the heat of the tube walls of the fluorescent lamps L1 and L2 is transferred to the drawstring lever 41 via the heat dissipation holder 27, and the drawstring lever 41 causes the instrument body to move.
The heat can be dissipated to the outside of 14. And the drawstring lever
Since 41 has a plate shape made of metal with protruding radiating fins 46 and is protrudingly provided on the outside of the instrument body 14, efficient heat dissipation can be performed. Therefore, the tube walls of the fluorescent lamps L1 and L2 can be efficiently cooled, the coldest part of the lamp can be easily formed, the lamp power can be increased, and the total luminous flux can be increased to improve the overall efficiency of the fluorescent lamps L1 and L2 with respect to the luminous efficiency. (Lm /
W) can be improved.

Particularly, the heat radiation holder 27 is replaced with the fluorescent lamp L1.
, L2 facing the base portion of the fluorescent lamps, that is, the portion of the fluorescent lamps L1, L2 farthest from the base portion is brought into contact with the tube wall, so that the portion of the fluorescent lamps L1, L2 spaced from the base portion is effectively cooled. Then, the coldest part of the lamp is forcibly formed, the lamp power is raised, and the total luminous flux is raised, so that the total efficiency (lm / Lm) with respect to the luminous efficiency of the fluorescent lamps L1, L2 is increased.
W) can be improved.

Then, as described above, the fluorescent lamps L1 and L2 are
Since the lighting fixture 11 can be efficiently cooled and the total efficiency can be secured, the lighting fixture 11 can be made thin and compact.

Further, in order to make the luminaire 11 thin and compact, the volume ratio is small and the tube outer diameter is easily increased to 2
When a fluorescent lamp of 5.5 mm or less is used, when a recess is formed in the fixture body to store the fluorescent lamp in the recess, or when the bottom surface of the fixture body 14 is covered, the fluorescent lamp L1
, L2 is hermetically sealed or nearly hermetically sealed, the fluorescent lamp L1
, L2 tube temperature rise can be effectively suppressed and the overall efficiency of the fluorescent lamp can be prevented from decreasing.
Can be easily thinned and downsized.

For example, when a fluorescent lamp with a lamp power of 86 W is exposed to the outside, the luminous efficiency of the fluorescent lamp is 83.3 [lm / W], while using a shade. When the fluorescent lamp is sealed, the total efficiency becomes 70.0 [lm / W], and the efficiency is reduced by about 20%. However, by using the heat dissipation holder 27 of this embodiment, the degree of this reduction is Can be reduced.

Further, since the drawstring guide body which has been conventionally used is changed in material, shape, etc., as the heat radiating means,
It is possible to suppress an increase in manufacturing cost and a deterioration in appearance.

Further, in the above embodiment, the plurality of heat-dissipating holders 27 are brought into sliding contact with the one drawstring lever 41, whereby the plurality of fluorescent lamps L1 and L2 can be effectively cooled, or It is also possible to effectively cool a plurality of places of the fluorescent lamp.

Further, since the drawstring lever 41 is provided so as to be able to advance and retreat with respect to the instrument main body 14, the hanging position of the drawstring 22 is adjusted by advancing and retracting the drawstring lever 41 and adjusting the projecting dimension from the instrument main body 14. In addition to being adjustable, the strength of the heat radiation effect can be adjusted.

Further, since the drawstring lever 41 is formed with a plurality of heat radiating fins 46 whose longitudinal direction is the advancing / retreating direction, the heat radiating fins 46 can improve the heat radiating effect and
By slidably engaging a pair of engaging support portions 51, 51 provided on the reflector 16 of the instrument body 14 with these heat radiation fins 46, the drawstring lever 41 can be stably advanced and retracted without rattling. You can

In the above embodiment, an example of using the annular fluorescent lamps L1 and L2 has been described. However, heat radiation of a curved tube fluorescent lamp other than the annular lamp or a straight tube fluorescent lamp is performed. Can be used for. Further, the present invention can be used not only for a lighting fixture using a fluorescent lamp but also for a lighting fixture using an incandescent light bulb, etc. for radiating heat-generating components.

[0040]

According to the lighting device of the first aspect, the heat of the fluorescent lamp is transferred to the drawstring guide through the lamp holder.
It is possible to efficiently dissipate heat from the drawstring guide body provided so as to project from the instrument body. Therefore, it is possible to efficiently cool the fluorescent lamp and improve the overall efficiency of the fluorescent lamp. Since the fluorescent lamp can be efficiently cooled, the lighting fixture can be made thin and compact. Further, by using the conventionally used drawstring guide body as the heat radiating means, it is possible to suppress an increase in manufacturing cost and a deterioration in appearance.

According to the lighting device of the second aspect, in addition to the effect of the first aspect, since the lamp holder is brought into contact with the portion separated from the base portion of the fluorescent lamp, the portion separated from the base portion of the fluorescent lamp. Can be effectively cooled to form the coldest part of the lamp, and the overall efficiency of the lamp can be improved.

According to the lighting device of the third aspect, in addition to the effect of the first or second aspect, the plurality of lamp holders can effectively cool the plurality of fluorescent lamps or the plurality of places of the fluorescent lamp. it can.

According to the lighting equipment of claim 4, in addition to the effect of any one of claims 1 to 3, the outside diameter of the tube is 2
By using a fluorescent lamp of 5.5 mm or less, the lighting fixture can be thinned. The outer diameter of the pipe is 25.5.
Since the rise in the tube wall temperature due to being less than or equal to mm can be effectively suppressed by the heat radiation from the drawstring guide, even if the lighting fixture is made thin, the overall efficiency of the fluorescent lamp does not decrease.

According to the luminaire of the fifth aspect, in addition to the effect of any one of the first to fourth aspects, the luminaire can be thinned by housing the fluorescent lamp in the concave portion of the luminaire main body. . In addition, the rise in the temperature of the tube wall caused by housing the lamp in the recess of the main body of the lamp can be effectively suppressed by the heat radiation from the drawstring guide, so the overall efficiency of the lamp will decrease even if the lighting fixture is made thinner. Nor.

According to the lighting device of the sixth aspect, in addition to the effect of any one of the first to fifth aspects, the drawstring guide body is provided so as to be able to move forward and backward with respect to the main body of the device, and this forward and backward direction is referred to as the longitudinal direction. Since the protrusion is provided, the heat dissipation effect can be improved by this protrusion, and the protrusion / retraction of the drawstring guide body can be guided by using this protrusion.

[Brief description of drawings]

FIG. 1 is a partial explanatory view showing an embodiment of a lighting fixture of the present invention.

FIG. 2 is a cross-sectional view of the lighting device.

[Explanation of symbols]

 11 Lighting fixture 14 Fixture body 21 Switch 22 Pull string 27 Heat dissipation holder as lamp holder 41 Pull string lever as pull string guide L1, L2 Fluorescent lamp

Claims (6)

[Claims] 1. A device main body; a switch provided on the device main body and provided with a drawstring; a lamp holder for holding a fluorescent lamp; a lamp holder connected to the lamp holder and projecting from the device main body to guide the drawstring. And a drawstring guide body formed of a heat radiating body; 2. The lighting fixture according to claim 1, wherein the lamp holder is in contact with a portion of the fluorescent lamp which is separated from the base portion. 3. The luminaire according to claim 1, further comprising a plurality of lamp holders each connected to the drawstring guide body. 4. The luminaire according to claim 1, wherein the fluorescent lamp has a tube outer diameter of 25.5 mm or less. 5. The luminaire according to claim 1, wherein the luminaire body is provided with a recess for accommodating the fluorescent lamp. 6. The lighting device according to claim 1, wherein the drawstring guide body is provided so as to be capable of advancing and retreating with respect to the instrument main body, and is provided with a protrusion having a longitudinal direction in the advancing and retracting direction. Equipment.