JPH08329709A - Luminaire - Google Patents

Abstract

PURPOSE: To provide a thin luminaire with a good appearance and properly define a distance between a luminaire mainbody and the surface of a circular fluorescent lamp opposed to the luminaire mainbody in consideration of a lower profile and reflecting efficiency. CONSTITUTION: A luminaire mainbody 11 circularly shaped in appearance is provided with an annular recess 16. In the recess 16, a circular fluorescent lamp 1 with the outer diameter of a tube being 25.5mm or less and power consumption being 40W to 65W is arranged. A distance between the luminaire mainbody 11 and the surface of the circular fluorescent lamp 1 opposed to the luminaire mainbody 11 is set to be 20mm>=x>=D/2. In this way, the circular fluorescent lamp 1 arranged in the recess 16 of the luminaire mainbody 11 can be made thin as a whole and improved in appearance. A distance (x) between the luminaire mainbody 11 and the surface of the circular fluorescent lamp 1 opposed to the luminaire mainbody 11 set to be 20mm>=x>=D/2 can be properly defined from a relationship between a lower profile and reflecting efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminaire using an annular fluorescent lamp.

[0002]

2. Description of the Related Art Conventionally, a lighting fixture using an annular fluorescent lamp is provided with a truncated cone-shaped fixture main body on the lower surface of a top plate as described in Japanese Patent Laid-Open No. 4-212276, for example. Two sockets and two lamp holders are symmetrically projected downward from each other, the caps of two annular fluorescent lamps having different lamp outer diameters are connected to the sockets, and the annular fluorescent lamps are attached to each lamp holder. A glass bulb portion opposite to the base of the lamp is fitted, and two annular fluorescent lamps are arranged below the fixture body at different heights.

In the conventionally used annular fluorescent lamp,
The outside diameter of the glass bulb is 29 mm, which is relatively large.

In the conventional luminaire in which the annular fluorescent lamp is arranged below the fixture body, the annular fluorescent lamp projects below the maximum projection of the fixture body with respect to the ceiling surface. The height of is relatively high.

[0005]

In the conventional structure, the outer diameter of the glass bulb of the annular fluorescent lamp is large, and since the annular fluorescent lamp is arranged below the main body of the lamp, the height of the luminaire is reduced as a whole. It is difficult to make it very low, and there is a feeling of pressure when the height of the instrument body is high.

Further, it is possible to reduce the thickness by disposing the annular fluorescent lamp close to the instrument body, but if it is too close, the efficiency of reflection of the lamp light on the instrument body decreases.

The present invention has been made in view of the above points, and is thin and has a good appearance, and in consideration of thinning and reflection efficiency, the main body of the appliance and the annular fluorescent lamp facing the main body of the appliance are provided. An object of the present invention is to provide a luminaire that can properly define the distance from the surface.

[0008]

According to a first aspect of the present invention, there is provided a luminaire having a circular appearance having a ring-shaped concave portion; a tube outer diameter D of 25.5 mm or less, and power consumption. 40 W to 65 W, and an annular fluorescent lamp disposed in the recess with the distance x between the instrument body and the surface facing the instrument body being 20 mm ≧ x ≧ D / 2.

A luminaire according to a second aspect is the luminaire according to the first aspect, further comprising: a socket provided in a recess of the luminaire body; and a shade having an opening surface, the opening surface side being attached to the luminaire body. Is provided.

A lighting fixture according to a third aspect is the lighting fixture according to the second aspect, wherein a porous body having air permeability is provided in a portion facing the inside and the outside of the storage space of the annular fluorescent lamp surrounded by the fixture body and the shade. It is a thing.

A luminaire according to a fourth aspect is the luminaire according to any one of the first to third aspects, further comprising an adapter disposed substantially at the center of the luminaire main body and electrically and mechanically connected to the hook ceiling. Is what you are doing.

A luminaire according to a fifth aspect is the luminaire according to any one of the first and fourth aspects, further comprising a light control means disposed between the luminaire body and the fluorescent lamp.

According to a sixth aspect of the present invention, in the lighting fixture according to any one of the first to fifth aspects, the maximum projection of the fixture body with respect to the mounting surface is substantially the same as the position of the downward irradiation portion of the annular fluorescent lamp. It is located above.

A luminaire according to a seventh aspect is the luminaire according to any one of the first to sixth aspects, wherein a distance from a mounting surface of the luminaire body to a maximum protruding portion is 50 mm or less.

The lighting fixture according to claim 8 is the lighting fixture according to any one of claims 1 to 7, further comprising a discharge lamp lighting device disposed in the fixture body for discharging an annular fluorescent lamp. Is.

[0016]

In the luminaire according to claim 1, the outside diameter D of the tube is 2
5.5mm or less, power consumption 40W to 65
By using an annular fluorescent lamp of W and disposing this annular fluorescent lamp in the concave portion of the main body of the device, the overall structure is made thin. Furthermore, the distance x between the instrument body and the surface of the annular fluorescent lamp facing the instrument body is 20 mm ≧ x ≧ D
By setting / 2, an appropriate distance x is defined from the relationship between thinning and reflection efficiency.

In addition to the function of the luminaire according to the first aspect, the luminaire according to the second aspect has a thin structure even when the socket is provided in the recess and the shade is attached to the luminaire main body.

In addition to the function of the luminaire according to claim 2, the luminaire according to claim 3 radiates heat to the outside from the accommodation space of the annular fluorescent lamp due to the air permeability of the porous body to accommodate the annular fluorescent lamp. Even if the volume of the space is reduced, the temperature rise is suppressed and the device is made thin.

According to a fourth aspect of the present invention, in addition to the operation of the first aspect of the present invention, the fixture main body is electrically and mechanically connected to the hook ceiling via an adapter.

According to a fifth aspect of the present invention, in addition to the operation of the first aspect, the light of the annular fluorescent lamp is controlled by the light control means.

According to the lighting equipment of the sixth aspect, in addition to the operation of the lighting equipment of any one of the first to fifth aspects, the maximum projecting portion with respect to the mounting surface of the equipment body projects beyond the downward irradiation portion of the annular fluorescent lamp. Therefore, the instrument body is thin.

According to a seventh aspect of the present invention, in addition to the function of the first aspect of the present invention, the distance from the mounting surface of the main body of the fixture to the maximum protrusion is 50 mm or less. Is made thin.

In addition to the function of the luminaire according to any one of claims 1 to 7, in the luminaire according to claim 8, the annular fluorescent lamp is discharged by the discharge lamp lighting device provided in the fixture body. It

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of the lighting equipment of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment, FIG. 1 is a cross-sectional view of a lighting fixture, FIG. 2 is a perspective view of a disassembled state of the fixture body, and FIG. 3 is a position of the fixture body and an annular fluorescent lamp. It is a schematic diagram explaining a relationship.

In the figure, reference numeral 1 is an annular fluorescent lamp, and this annular fluorescent lamp 1 has an annular glass bulb 2 formed to have an outer diameter D of 25.5 mm or less, for example, 19 mm. Is filled with a discharge medium containing a rare gas and mercury, a phosphor coating is formed on the inner wall surface of the glass bulb 2, electrodes are arranged at both ends of the glass bulb 2, and a space between both ends of the glass bulb 2 is provided. The base 3 is arranged so as to straddle. On the base 3, a plurality of base pins 4 electrically connected to the electrodes are provided so as to protrude in substantially the same direction as the annular virtual axis of the glass bulb 2. And
As shown in the figure, at least one of the two annular fluorescent lamps 1 having different lamp outer diameters has a power consumption in the range of 40W to 65W.

Reference numeral 11 denotes an instrument main body, which has a circular appearance and is formed thin, and is provided with a top plate 12. The top surface of the top plate 12 is a mounting surface 12a to a ceiling surface 27 described later. Becomes A circular opening 13 is vertically formed in the center of the instrument body 11, and a storage portion 15 having an annular space 14 inside is formed around the opening portion 13. The storage portion 15 has an annular shape around the storage portion 15. An annular recess 16 in which the fluorescent lamp 1 is arranged is formed.

A pair of sockets 18 are provided in the recess 16 of the instrument main body 11 corresponding to the respective positions where the two annular fluorescent lamps 1 are provided. The socket 18 is integrally formed with a protrusion 31 that protrudes into the recess 16 from one location of the storage portion 15.

A lamp holder is provided in the storage portion 15 of the instrument body 11.
At a position in the vicinity of 21, a socket 23 is horizontally arranged facing the opening 13, and a baby ball 24 is horizontally screwed and connected to the socket 23.

A discharge lamp lighting device (inverter lighting device) 25 having an inverter circuit is arranged in the annular space 14 of the housing portion 15 of the instrument body 11. This discharge lamp lighting device
An adapter 26 is electrically connected to the power input side of 25 by a wire or the like, and each socket 18 is electrically connected to the output side by a wire or the like.

The adapter 26 is formed in a disk shape having a thin height, and is integrally fixed to the instrument body 11 via a coupling portion (not shown) in the lower side of the opening 13 of the instrument body 11, and the coupling portion is formed. It is connected to the power supply input side of the discharge lamp lighting device 25 by an electric wire or the like wired along the line. Then, the adapter 26 is electrically connected and mechanically supported to the rectangular hook ceiling 28 installed on the ceiling surface 27 when the device is attached.

A shade 29 is attached to the instrument body 11 so as to cover the lower side and the side of the instrument body 11. This Sade 29
For example, a porous body A made of a milky white resin having air permeability and translucency, such as an ultrahigh molecular weight polyethylene porous sheet, is formed in a thin shape that gently protrudes downward with a large arc surface, and has an upper surface. An opening surface 30 attached to the instrument body 11 is formed in the opening.

At the position of the concave portion 16 of the instrument body 11, an annular reflecting plate 32 is attached as a light control means.
The reflection surface 33 of the reflection plate 32 is arranged in an inclined shape from the lower end peripheral portion of the storage portion 15 to the peripheral portion of the top plate 12, and the reflection surface 33 is formed.
A concave surface part where a part of the upper surface side of each annular fluorescent lamp 1 enters
34 is formed in a ring shape. The cross-sectional shape of the concave surface portion 34 is formed to be substantially concentric with the annular fluorescent lamp 1.

An insertion hole 35 through which the base pin 4 of the annular fluorescent lamp 1 to be inserted into the socket 18 is inserted is formed at a position of each concave portion 34 facing the socket 18.
A holder 36 that fits and holds the outer circumference of the base 3 of the annular fluorescent lamp 1 is attached. A lamp holder 21 that is fitted and held on the outer circumference of the glass bulb 2 of the annular fluorescent lamp 1 is attached to the side of each concave portion 34 opposite to the holder 36.

Then, as shown in FIG. 3, the distance x between the top plate 12 of the instrument body 11 and the surface of the annular fluorescent lamp 1 facing the top plate 12 is defined as 20 mm ≧ x ≧ D / 2. .

Next, the operation of the first embodiment will be described.

As shown in FIG. 1, the instrument body 11 is a ceiling surface.
The instrument body 11 is supported on the ceiling surface 27 via the adapter 26 connected to the hook ceiling 28 installed on the device 27, and the instrument body 11 side and the hook ceiling 28 side are electrically connected.

Two annular fluorescent lamps 1 having different lamp diameters are arranged in the annular recess 16 of the instrument body 11, and a base pin 4 protruding from the base 3 is inserted and connected to a socket 18, and The glass bulb 2 on the side opposite to the base 3 is held by the lamp holder 21. A baby ball 24 is connected to the socket 23.

Ring fluorescent lamp 1, baby ball 24, adapter
A shade 29 is attached to the device body 11 so as to cover 26 and the like. By attaching the shade 29 to the device body 11,
A storage space 37 for the annular fluorescent lamp 1 surrounded by the instrument body 11 and the shade 29 is substantially sealed.

When the annular fluorescent lamp 1 is turned on and the baby ball
When 24 is turned on, the light emitted from the annular fluorescent lamp 1 and the baby bulb 24 is transmitted through the shade 29 and illuminated.

An annular fluorescent lamp 1 having an outer diameter of 25.5 mm or less and a power consumption of 40 W to 65 W.
By disposing the annular fluorescent lamp 1 in the annular recess 16 provided in the main body 11 of the appliance, the overall shape can be reduced even when the shade 29 is attached, the appearance can be improved, and a feeling of oppression can be obtained. Can be tempered.

Moreover, the top plate 12 of the instrument body 11 and this top plate 12
The distance x from the surface of the annular fluorescent lamp 1 facing the
By setting m ≧ x ≧ D / 2, an appropriate distance x can be defined from the relationship between thinning and reflection efficiency.

Further, since the shade 29 is formed of the porous body A, air permeability to the outside can be obtained even when the storage space 37 of the annular fluorescent lamp 1 is sealed, and the annular fluorescent light stored in the storage space 37 is obtained. The heat generated by the lamp 1 and the discharge lamp lighting device 25 can be dissipated to the outside. Especially, since ventilation is done with the whole Sade 29,
Good heat dissipation efficiency. Therefore, even if the volume of the storage space 37 is reduced, the temperature rise can be suppressed and the overall thickness can be reduced.

Further, the mounting surface 12a of the fixture body 11, that is, the maximum protruding portion of the fixture body 11 with respect to the ceiling surface 27 is in a state where it does not project below the downward irradiation portion of the annular fluorescent lamp 1, and the annular fluorescent lamp 1 is included. The tool body 11 can be made thin.

Moreover, the distance from the mounting surface 12a of the instrument body 11 to the maximum protruding portion can be set to 50 mm or less,
The tool body 11 can be made thin.

Further, even when the shade 29 is attached to the instrument main body 11, it can be made thin as a whole, and since the shade 29 has a thin shape which gently protrudes downward with a large arc surface, it gives a feeling of pressure. There is no.

Further, due to the diffusing action of the shade 29, the lamp image reflected on the shade 29 can be reduced and the light distribution can be made uniform.

The annular fluorescent lamp 1 can be easily attached to and detached from the instrument body 11 by moving the annular fluorescent lamp 1 vertically. Since the protruding direction of the base pin 4 coincides with the attaching / detaching direction of the annular fluorescent lamp 1, the attaching / detaching of the base pin 4 and the socket 18 can be easily performed.

Further, since the base pin 4 is arranged in the substantially same direction as the annular virtual axis of the glass bulb 2,
Compared to the case where the socket 18 connected to the base pin 4 does not project toward the inner space of the lamp and the base pin is inclined to the inner space and the socket connected to the base pin projects to the inner space as in the conventional case. As a result, the space inside the lamp can be effectively used. That is, the volume can be increased by enlarging the storage portion 15 of the instrument body 11 in the radial direction. In other words, even with the same volume, it can be lowered in the height direction of the storage section 15,
Can be made thin.

Next, FIG. 4 shows a second embodiment. In this embodiment, the shade 29 is formed of a translucent milky white resin instead of the porous body A, and the opening of the shade 29 is formed. 30
A plurality of vent holes 39 are formed along the annular edge portion 38 forming the. The porous body A is attached to the inner surface side of the edge portion 38 by closing each vent hole 39.

Also in this structure, the ventilation holes 39 of the shade 29 are closed by the porous body A to maintain the airtightness,
Since the porous body A can radiate heat from the storage space 37 to the outside due to the air permeability, the temperature rise can be suppressed even if the volume of the storage space 37 is reduced, and the overall thickness can be reduced. Moreover, by using the porous body A as a part, compared with the case where the whole of the shade 29 is formed of the porous body A, it can be easily manufactured and can be made inexpensive.

Next, FIG. 5 shows a third embodiment. In this embodiment, the shade 29 is formed of a translucent milky white resin, not the porous body A, into a curved plate shape. An annular shade frame formed of a porous body A around the periphery of the shade 29.
It is supported by 40, and this shade frame 40 attaches the shade 29 to the device body 11.

Also in this configuration, the shade frame 40
Since the porous body A can radiate heat from the storage space 37 to the outside due to the air permeability, the temperature rise can be suppressed even if the volume of the storage space 37 is reduced, and the overall thickness can be reduced. Moreover, by using the porous body A for the shade frame 40, compared with the case where the entire shade 29 is formed of the porous body A, it can be manufactured easily and at low cost.

Next, FIG. 6 shows a fourth embodiment. In this embodiment, a plurality of parts are provided outside the mounting surface 12a of the top plate 12 of the instrument main body 11 and where a gap is formed between the ceiling surface 27. The ventilation holes 41 are formed, and the porous body A is attached to the inner surface side of the top plate 12 by closing the ventilation holes 41.

Also in this structure, the ventilation hole 41 of the shade 29 is closed by the porous body A to maintain the airtightness,
Since the porous body A can radiate heat from the storage space 37 to the outside due to the air permeability, the temperature rise can be suppressed even if the volume of the storage space 37 is reduced, and the overall thickness can be reduced. Moreover, by using the porous body A as a part, compared with the case where the whole of the shade 29 is formed of the porous body A, it can be easily manufactured and can be made inexpensive.

In each of the above embodiments, the reflector 32 is used as the light control means, but a light guide or the like may be used. Further, the recess 16 may not be provided with a light control means.

Further, by using, for example, an aluminum material having a good thermal conductivity for the top plate 12 of the instrument body 11, the thermal influence caused by bringing the annular fluorescent lamp 1 close to the top plate 12 of the instrument body 11 is reduced. it can. In this case, the heat dissipation effect of the discharge lamp lighting device 25 can be improved by providing the discharge lamp lighting device 25 on the top plate 12 of the fixture body 11.

[0058]

According to the luminaire of claim 1, an annular fluorescent lamp having an outer diameter D of 25.5 mm or less and a power consumption of 40 W to 65 W is used. By arranging it in the concave portion, the overall thickness can be reduced, the appearance can be improved, and the distance x between the instrument body and the surface of the annular fluorescent lamp facing the instrument body can be 20 mm ≧ x ≧ D / 2. With this, an appropriate distance x can be defined in terms of the relationship between thinning and reflection efficiency.

According to the lighting equipment of the second aspect, in addition to the effect of the lighting equipment of the first aspect, even if the socket is provided in the recess and the shade is attached to the body of the equipment, the overall thickness is thin. The appearance can be improved.

According to the lighting device of the third aspect, in addition to the effect of the lighting device of the second aspect, since the porous fluorescent material can radiate heat to the outside from the storage space of the annular fluorescent lamp, Even if the volume of the lamp storage space is reduced, the temperature rise can be suppressed, and the lamp can be made thin.

According to the lighting equipment of claim 4, in addition to the effect of the lighting equipment of any one of claims 1 to 3,
The adapter body allows the device body to be electrically and mechanically connected to the hook ceiling.

According to the lighting equipment of claim 5, in addition to the effect of the lighting equipment of any one of claims 1 to 4,
The light of the annular fluorescent lamp can be controlled by the light control means.

According to the lighting equipment of claim 6, in addition to the effects of the lighting equipment of any one of claims 1 to 5,
Since the maximum protruding portion of the fixture body with respect to the mounting surface does not project beyond the downward irradiation portion of the annular fluorescent lamp, the fixture body can be made thin.

According to the lighting equipment of claim 7, in addition to the effects of the lighting equipment of any one of claims 1 to 6,
The distance from the mounting surface of the device body to the maximum protruding portion is 50 mm or less, and the device body can be made thin.

According to the lighting equipment of claim 8, in addition to the effects of the lighting equipment of any one of claims 1 to 7,
The annular fluorescent lamp can be discharged by the discharge lamp lighting device provided in the fixture body.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a lighting fixture showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a disassembled state of the lighting fixture of the embodiment.

FIG. 3 is a schematic view for explaining the positional relationship between the instrument body and the annular fluorescent lamp of the above embodiment.

FIG. 4 is a sectional view of a lighting fixture showing a second embodiment of the present invention.

FIG. 5 is a sectional view of a lighting fixture showing a third embodiment of the present invention.

FIG. 6 is a cross-sectional view of a lighting fixture showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Annular fluorescent lamp 11 Fixture body 16 Recessed portion 18 Socket 25 Discharge lamp lighting device 26 Adapter 28 Hook ceiling 29 Sed 30 Opening surface 32 Reflector as light control means 37 Storage space A Porous body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Hasegawa 4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Inside Toshiba Lighting & Technology Corporation

Claims (8)

[Claims] 1. An instrument main body having a circular appearance with a recess provided in an annular shape; a pipe outer diameter D of 25.5 mm or less, and power consumption of 40 W to 65 W. The distance x to the facing surface is 20 mm ≧ x
A luminaire, comprising: an annular fluorescent lamp disposed in the recess as ≧ D / 2. 2. The socket according to claim 1, further comprising: a socket disposed in a recess of the instrument body; a shade having an opening surface, and an opening surface side being attached to the instrument body. lighting equipment. 3. The lighting device according to claim 2, wherein a porous body having air permeability is provided in a portion facing the inside and outside of the storage space of the annular fluorescent lamp surrounded by the main body of the device and the shade. 4. The luminaire according to claim 1, further comprising an adapter arranged substantially at the center of the luminaire main body for making electrical and mechanical connection with the hook ceiling. 5. The luminaire according to claim 1, further comprising a light control means arranged between the luminaire body and the fluorescent lamp. 6. The luminaire according to claim 1, wherein the maximum protruding portion of the fixture body with respect to the mounting surface is located substantially at or above the position of the downward irradiation portion of the annular fluorescent lamp. . 7. The luminaire according to claim 1, wherein the distance from the mounting surface of the luminaire body to the maximum protrusion is 50 mm or less. 8. The lighting fixture according to claim 1, further comprising a discharge lamp lighting device which is disposed in the fixture body and discharges the annular fluorescent lamp.