JPH07192513A - Luminaire - Google Patents

Abstract

PURPOSE:To lessen the work troubles at the time of installing a luminaire or replacement of a lamp for the luminaire, lessen the dangerous work at a high place, and provide a luminaire having a light guide plate with which work efficiency can be improved. CONSTITUTION:Luminaires L1, L2 provided with lamps 7, a light guide plate 5, and either lighting circuit units 2 or a lamp cover member in a base body 1 and so composed as to guide the emitted light from the lamps 7 to one end face sides by whole reflection are installed wherein the lamps 7 are set near and on the opposite to the other end faces of the light guide plate 5. The lamps 7 are held in a chassis 4 side which supports the light guiding plate 5 or the lamp cover member side and connected to the lighting circuit units 2 by attaching the chassis 4 or the lamp cover member to the base body 1. Consequently, a man-hour of working for installation, detachment, or replacement of the lamps can be lessened as compared with conventional processes and a thin type luminaire with improved work efficiency and safety is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminaire using a light guide attached to a ceiling or the like in a home, an office, a store or the like.

[0002]

2. Description of the Related Art For example, a lighting device for a fluorescent lamp includes a lighting circuit device such as a ballast, a chassis to which a reflector and a socket of a lamp are attached, a fluorescent lamp mounted to the socket of the chassis, and the lamp and the lighting. It is constructed by assembling a light control body such as a shade or a globe for covering the circuit device and controlling the light from the lamp to the above chassis.

When used, one lamp is used to increase the output of the lamp or a plurality of lamps are used so that the illuminance in the room can be sufficiently secured. However, it is not preferable that the brightness of the lamp is simply increased because the brightness becomes high and glare is felt. In order to eliminate such glare, it is necessary to give light-diffusing properties to light-controlling bodies such as shades and gloves, but covering the entire lamp with light-controlling elements results in illuminance. It means that the decrease of

Therefore, recently, without covering the entire lamp with a light control body as described above, a rectangular shape made of a synthetic resin is disclosed as disclosed in JP-A-4-118803 and JP-A-4-91006. A luminaire has been developed in which a fluorescent lamp is arranged on the side surface of a light guide plate, and most of the light emitted from the lamp is incident from the end surface of the light guide plate and emitted from the lower surface.

In the luminaire having such a structure, the incident light from the lamp is guided by the total reflection in the light guide plate and is taken out as uniform radiated light on the lower surface of the light guide plate, so that the luminaire can be made thin and special. There is an advantage that a bright and relatively uniform surface illuminance can be obtained without using a high-output lamp.

[0006] Such a lighting fixture is generally attached to a high place such as a ceiling, a beam or a wall for the purpose of use. For this reason, ladders and steps were required for work such as equipment installation, inspection, cleaning, and lamp replacement. So, for example, when changing the lamp, go up the ladder,
First, remove the shade or reflector covering the lamp from the base or chassis and lower it, then climb up the ladder again and then remove the lamp from the socket and lower it. The lamp is made of glass and is fragile, so when replacing multiple lamps, repeat the steps of removing and lowering the lamp. Next, go up the ladder with a new lamp, and once you have installed the lamp in the socket, go down the ladder. (If there are multiple replacement lamps, repeat the work.) Finally, holding the above-mentioned shade and reflector, the ladder was raised and assembled to the base and chassis, and the ladder was lowered to finish the work. Therefore, the work is troublesome and time-consuming, and there is a safety problem in going up and down to a high place.

[0007]

[Problems to be Solved by the Invention]
Even if the lamp of the book is replaced, the ladder must be climbed up and down several times, which is not only labor-intensive but also a high place, which is dangerous and it is desired to reduce the number of times of lifting.

The present invention eliminates these problems and provides a luminaire having a light guide plate which can improve the work efficiency by reducing the time and labor of the work when mounting the luminaire or replacing the lamp of the luminaire. The purpose is to do.

[0009]

According to a first aspect of the present invention, there is provided a lighting apparatus including a light guide plate on a base, a lamp arranged in close proximity to one end face of the light guide plate, and a lighting circuit device. In the fixture, the lamp is held on a chassis side that supports the light guide plate and is detachable from the base body, and is connected to the lighting circuit device by mounting the chassis on the base body. A lighting fixture according to a second aspect of the present invention is characterized in that a support base for the lamp is provided on the chassis, and the support base and a power supply terminal provided on the base body are electrically connected. .

The lighting equipment according to a third aspect of the present invention is characterized in that the chassis is a reflector.

A luminaire according to a fourth aspect of the present invention is a luminaire equipped with a light guide plate on a base, a lamp arranged in close proximity to one end face of the light guide plate, and a lighting circuit device, wherein the lamp is It is characterized in that it is connected to the lighting circuit device by being held by a lamp cover member which is detachable from the base body and mounted on the base body or the light guide plate.

According to a fifth aspect of the present invention, the lamp fixture is characterized in that the lamp cover member is a reflector, and the reflector is provided with a support base for the lamp.

According to a sixth aspect of the present invention, there is provided a lighting apparatus in which the lamp cover member is provided over a part or the entire outer circumference of the light guide plate.

[0014]

In the lighting apparatus of the present invention, the lamp is not directly attached to the socket on the main body (chassis) side, but the lamp can be set in advance on a cover member such as a shade or a reflector or a light guide plate at a place where the feet are stable. Moreover, by attaching the cover member and the light guide plate to the main body (chassis) side, the cap terminal of the lamp and the power supply terminal of the socket are simultaneously connected.

[0015]

Embodiments of the present invention will be described below with reference to FIGS. The figure shows a lighting fixture L1 for four straight tube fluorescent lamps.
FIG. 1 is a longitudinal side view, FIG. 2 is a bottom view, FIG. 3 is a perspective view of the light guide side removed from the instrument, and FIG. 4 is a perspective view of a main part.

In the figure, reference numeral 1 denotes a base body made of metal or synthetic resin which is attached to a ceiling, a beam, a wall or the like with screws or the like. On the lower surface of the base body 1, lighting circuit devices 2 and 2 such as a ballast and the lighting thereof. The power supply terminal 3 connected to the circuit device 2 is attached.

Reference numeral 4 denotes a chassis made of metal or synthetic resin, and a rectangular plate-shaped light guide 5 made of synthetic resin such as transparent acrylic is provided in the central portion on the lower surface side of the chassis 4 with screws 95, 95 ... It is fixed. A light reflecting film 5a made of white paint or aluminum is formed on the upper surface of the light guide body 5.

Further, 6, 6, ...
, Are formed on the upper surface side and sockets 62, 62, ... Are integrally or integrally formed on the lower surface side. The sockets 62, 62, ...
Straight tube type fluorescent lamps 7, 7 on each end face of each side of
It is provided so that the ... can be held face-to-face.

Further, 8, 8, ... Are the fluorescent lamps 7,
Is a substantially U-shaped reflector having a light-reflecting film formed on the inner surface provided so as to surround 7.

Reference numeral 9 is also a shade frame made of metal or synthetic resin, and a rectangular window portion 9a is formed in the central portion, and the window portion 9a faces the vicinity of the four sides of the light guide body 5. The shade frame 9 is attached to the chassis 4 with screws 96, 96 ...
Is fixed through.

Numerals 97, 97, ... Are known V-shaped springs formed by bending metal wires and are attached to the base 1 (in FIG. 3, for convenience, they are locked to the chassis 4 side). , And the hook portion at the tip is passed through the through hole 4a of the chassis 4 to support the chassis 4.

Then, a portion which controls a power feeding portion to the fluorescent lamps 7, 7, ... Will be described in more detail with reference to FIG. A straight guide groove 62a and a circular guide groove 62b are continuously formed on the surface of the socket 62 of the support 6 provided on the chassis 4, and these guide grooves 62a, 62b are formed.
A pair of pins 7 provided inside the base 7a of the fluorescent lamp 7
b and 7b (one of them is not visible) are guided. The power receiving terminal 61 above the socket 62 has a pair of insertion terminals 61b and 61b protruding on a base 61a made of an electrically insulating material.
61b and the connection terminal (not shown) in the socket 62 are electrically connected. The power supply terminal 3 attached to the base body 1 has a connection receiving terminal (not shown) in a base 3a made of an electric insulator, and has a pair of terminal insertion holes 3 on its lower surface.
b, 3b are formed and the terminal insertion holes 3b, 3b are formed.
And the above-mentioned insertion terminals 61b and 61b face each other. Reference numeral 98 is a power supply line that connects the connection receiving terminal (not shown) to the lighting circuit device 2. To assemble the lighting fixture L having such a configuration, first, the base 1 is mounted on a ladder or the like, and the lighting circuit devices 2, 2, ... Install with screws. Next, hold the shade frame 9 in the state shown in FIG.
Attached to the side (however, in FIG. 3, it is locked to the side of the chassis 4 for convenience). The expansion angle of the four V-shaped springs 97, 97, ... Is reduced and the hook portion at the tip thereof penetrates the chassis 4. Hole 4
After passing through a, the hook is hooked on the peripheral edge of the through hole 4a of the chassis 4 by expanding the expansion angle. Then, after the shade frame 9 (chassis 4) is suspended from the base body 1,
By pushing up the side of the shade frame 9 (chassis 4), the base 1 and the shade frame 9 (chassis 4) are integrally fixed by a locking means similar to a normal device such as a push button (not shown).

By pushing up on the side of the shade frame 9 (chassis 4), a pair of insertion terminals 61b, 61b protruding from the above-mentioned power receiving terminals 61, 61 ,. , Which are provided on the lower surface side of the power supply terminal 1, are inserted into the pair of terminal insertion holes 3b, 3b of the power supply terminals 3, 3 ,.
When the lighting fixture L1 is energized via a switch from a power source (not shown), the lighting circuit device 2 feeds the power supply line 9
7 → Connection receiving terminal of power supply terminal 3 → Insertion terminal 61b of power receiving terminal 61 → Connection terminal not shown in socket 62 → Base pin 7b of fluorescent lamp 7 → Lead wire not shown in fluorescent lamp 7 → Inside fluorescent lamp 7 An electric current flows into an electrode filament (not shown), discharge is generated in the fluorescent lamp 7, and the fluorescent lamp 7 can be turned on.

The light emitted from the fluorescent lamp 7 is reflected directly or by a reflector, enters from the end face of the light guide 5 facing the lamp 7, and is totally reflected in the light guide 5 repeatedly. While being guided to the other end surface side, the light incident on the reflection film 5a formed on the upper surface of the light guide 5 is strongly reflected and most of the light goes out from the lower surface side of the light guide 5 to the lower side. It is possible to obtain substantially uniform brightness over the front surface of the light guide body 5 while irradiating. Next, a procedure for replacing or inspecting the fluorescent lamp 7 of the lighting fixture L1 when the fluorescent lamp 7 has reached the replacement life and the lamp 7 is replaced or inspected will be described.

First, when a locking means such as a push button type is lifted up on a ladder or the like and the shade frame 9 is strongly pushed down, the locking means between the base body 1 and the shade frame 9 (chassis 4) (not shown) is released, and the shade frame is released. 9 (chassis 4) has four V-shaped springs 9
, 97, ... are suspended from the base 1. Next, the expansion angle of the V-shaped spring 97 is reduced and the hook portion at the tip thereof is extracted from the through hole 4a of the chassis 4 to extract the four V-shaped springs 97, 97 ,. 4) is removed from the base 1. Next, lower this shade frame 9 (chassis 4) to the ground,
Loosen the screws 96, 96, ... on the upper surface of the chassis 4 and remove the shade frame 9. Next, the chassis 4 is turned over so that the fluorescent lamp 7 side faces upward, and the fluorescent lamp 7 is removed from the socket 62. To remove the lamp 7, the lamp 7 is taken out by rotating the lamp 90 degrees to position the pin 7b of the base 7a in the linear guiding groove 62a of the socket 62 and then pulling. Next, the new fluorescent lamp 7 prepared
Contrary to the above, a pair of pins 7b, 7b (one of which is not visible) provided on the base 7a of the lamp 7 are guided into the linear guide groove 62a and the lamp 7 is rotated. As a result, the pins 7b, 7b move in the circular guiding groove 62b, and when the pins 7b, 7b rotate 90 degrees, the pins 7b, 7b are brought into contact with a connection terminal (not shown) to electrically connect and hold the lamp 7. It The replacement of the lamp 7 is sequentially performed for the four lamps 7, 7, ... In accordance with the above procedure.

After the replacement of the lamp 7, the chassis 4 is attached to the shade frame 9 with screws 96, 96, .... Then, in the same procedure as above, the shade frame 9 (chassis 4) is held, the ladder is climbed up, and the shade frame 9 (chassis 4) is attached to the base body 1 to complete the operation.

The luminaire L1 according to the present embodiment is used in such a manner that when the luminaire L1 is attached, detached, or the lamp is replaced, the luminaire L1 does not have to go up and down several times by using a ladder to the luminaire L1 located at a high place. It only has to go up and down a number of times, which reduces the work man-hours compared to the conventional one, improves work efficiency and safety, and securely holds the lamp, so it will not fall off. Therefore, cleaning is easy and maintenance inspection is easy.

As described above, the lighting equipment of the present embodiment can reduce the working man-hours as compared with the prior art at the time of attaching and detaching the equipment and at the time of attachment and detachment such as when replacing the lamp, and improve the working efficiency and safety, and the lamp can be installed. Since it is held securely, it will not fall off.

Further, since the lamp holder itself does not have a current-carrying function, it can be formed of a translucent member even if it is made large, and it is possible to prevent a shade or the like from being cast on the light control body. Therefore, cleaning is easy and maintenance inspection is easy.

5 to 11 show a two-lamp lighting fixture L2 showing a second embodiment of the present invention. In the drawings, the same parts as those in the above-mentioned first embodiment are designated by the same reference numerals and their description will be omitted. Omit it. 5 is a perspective view from above, FIG. 6 is a perspective view from below, and FIG.
Shows the main part on the substrate 1 side (A) is the direction of arrow 7A in FIG.
5B is a front view from the direction of arrow 7B in FIG. 5, FIG. 8 shows the main part of the cover member, and FIG. 8A is the direction of arrow 8A in FIG.
5B is a front view from the direction of the arrow 8B in FIG. 5, FIG. 9 is a perspective view of the lamp holder part, FIG. 10 is a front view showing the relationship between the lamp holder part and the power supply terminal, and FIG. 11 is an exploded perspective view of the power supply terminal. It is a figure.

First, as shown in FIG. 11, the power supply terminal 31 has three triplet-shaped tops 3d, 3 on the lower side of the power supply terminal body 3c formed of an electrical insulator such as synthetic resin.
A recess 3g having e, 3f is formed. A through hole (not shown) penetrates through the main body 3c, facing the tops 3d and 3f at both ends, and the power feeding terminal piece 3h and the terminal piece 3h are elastically pressed into the through hole. A coiled spring 3i is housed. 3j is a lid that covers the upper portion of the main body 3c.

The base body 11 of the second embodiment has a substantially rectangular lid shape in which one of the opposing side walls made of synthetic resin or metal also serving as the exterior or shade of the device L is opened, and the remaining side wall 1
The tips of 1a and 11a are bent to form a decorative surface 11b and 1b.
The light guide 5 is placed on the tips of the decorative surfaces 11b and 11b while forming the surface 1b. The power supply terminal 3 is provided near the ends of the inner surfaces of the side walls 11a and 11a of the base 11.
1 and a lighting circuit device 2 in the middle. In addition, 11d of the upper surface 11c is an insertion hole for a power supply line from a power source, 11e, 11e, ... Are through holes for attaching the base 11.
11f is a screw hole for mounting.

Reference numeral 15 denotes a substantially L-shaped lamp cover member which is detachably formed in conformity with the open side surface of the base body 11. The vertical side wall 15a has a lamp holder for supporting the straight tube type fluorescent lamp 7. 65 is provided. Also, 15b
Is a decorative surface and the tip covers the lower edge of the light guide 5. 15
Reference numeral f is a through hole of a mounting screw, and 8 is a reflector having a substantially U-shaped cross section.

The lamp holder 65 is made of an electrically insulating synthetic resin such as polycarbonate or acrylic, and has a plate-like body bent into a substantially M shape as shown in an enlarged view in FIGS. The vertical portion 65a of the cover member 15 is
It is fixed to the vertical side wall 15a by means of screws 99, 99 and the like. 65b is a central flat portion, and 65c is a flat portion 65b.
Of the base pins 7b, 7b, which are partially raised, are located at positions substantially opposed to the power supply terminals 31 by the insulating separate projections. Reference numerals 65d and 65d denote a pair of holding projections that guide and lock the base 7a of the lamp 7, and hold the lamp 7 to prevent it from falling off.

In the figure, 99 and 99 are mounting screws,
The lamp cover member 15 is inserted through a through hole 15f and screwed into a screw hole 11f formed on the side surface of the base 11.

In the instrument L2 having such a structure, the base 11 is attached to the ceiling, the beam or the like at a predetermined position by screws or the like as in the above. Then, for example, to replace the fluorescent lamp 7, use a ladder or the like to move up near the fixture L, first remove the mounting screws 99, 99, and then the lamp cover member 1
5 is pulled out from the base 11 and removed.

Next, on the ground, the lamp cover member 1
The fluorescent lamp 7 is removed from the holding projections 65d and 65d of the lamp holders 65 and 65 attached to both ends of the fluorescent lamp 7. Then, a new fluorescent lamp 7 is attached to the lamp holders 65, 65.
Attach and hold. As shown in FIG. 9, this holding is performed by inserting the base 7a of the lamp 7 between the holding protrusions 65d, 65d of the lamp holder 65 and by aligning the pins 7b, 7b with the inclined surface of the protrusion 65c so that the base 7a is flat. The lamp 7 is pushed down until it abuts 65b. (Of course at this time,
Pins 7b and 7b of the bases 7a and 7a at both ends of the lamp 7 are oriented in the same direction, and thus are mounted at the same time. ) After mounting the lamp 7 on one of the lamp cover members 15,
The lamp 7 is attached to the other lamp cover member 15 in the same manner. The lamp 7 thus mounted on the lamp holder 65 has pins 7b, 7b by the protrusion 65c.
Is positioned almost vertically and is held by the holding projections 65d and 65d even though it is attached from the lateral direction, so that it does not come off the holders 65 and 65.

Next, the lamp cover member 15 having the lamp 7 mounted thereon is lifted up the ladder, and the lamp cover member 15 is aligned with the portion of the base body 11 where the side surface is released, and mounting screws 99, 99 are mounted on the base body. 11 screw holes 1
Assembly work is completed by tightening to 1f.

When the lamp cover member 15 is attached to the side surface of the base 11, the pins 7b, 7 of the lamp 7 are attached.
The connection between b and the feeding terminal pieces 3h and 3h of the feeding terminal 31 is performed as shown in FIG. That is, when the lamp cover member 15 is pressed against the base 11, the holder 6
Pins 7b and 7b of the cap 7a separated by the inclined surface of the protrusion 65c of No. 5 are guided out from the tops 3d and 3f and pressed laterally by the spring 3i. It is possible to make strong contact with 3h and make a reliable electrical connection. In this case, the pins 7b and 7b of the base 7a separated by the protrusion 65c are guided in the recessed tops 3d and 3f formed at the main body 3c of the power supply terminal 31 and cooperate with the central protrusion 65c. It works to prevent short circuits.

When the lighting fixture L2 of this embodiment is also attached, detached, or the lamp is replaced, like the above-mentioned embodiment, the number of working steps can be reduced as compared with the conventional one, and the working efficiency and safety can be improved and the lamp can be used. Since it is held securely, it will not fall off. Further, in the case of the present embodiment, since the light guide and the electric wiring are not removed and only the lamp cover member holding the lamp is attached / detached, the handling member is lightweight, and workability and safety can be further improved. Easy to put on and take off and maintain and inspect.

The present invention is not limited to the above-described embodiments, and modifications within the scope of the invention are included in the present invention. For example, in the above embodiment, the case where four or two straight tubular fluorescent lamps are arranged on the opposite side surfaces of a square light guide has been described, but the present invention is not limited to this, and the light guide body has a triangular shape, a pentagonal shape, Each side may have the same length, such as a regular polygonal shape such as a hexagonal shape or a star shape, or a rhombic shape, or may have a rectangular shape or the above polygonal shape with unequal side lengths. Further, the light guide body is not limited to the one having a reflection film formed on the upper surface thereof, and a separate reflection plate may be arranged above the light guide body.

Further, the lamp is not limited to a fluorescent lamp, but may be another discharge lamp or a tube-shaped incandescent lamp, and the shape thereof is not limited to a straight tube and may be L-shaped, U-shaped, semicircular, circular or the like. The number of the lamps to be used is not limited to one to a plurality, and in short, the lamp may be attached to a member forming an envelope of the appliance such as a shade frame or a lamp cover member detachably attached to the base.

A base 7a provided at the end of the lamp
The terminal portions 7b, 7b may extend in a direction orthogonal to the lamp axis as shown in FIG. 12, and such a configuration can further simplify the configuration of the power supply terminal.

Further, in the above-mentioned embodiments, the reflector having a substantially U-shape is used. However, the reflector is not limited to the U-shape and may have another shape, and the cover member itself surrounding the lamp is a reflector. It is preferable that it also serves as a reflector and that it also has a lamp holder, because it saves parts. Further, a reflective lamp having a reflective film formed on the bulb surface of the lamp may be used.

Further, in the case of the lamp holder as in the second embodiment, the lamp can be mounted by simply inserting it into the socket without rotating it, so that the workability is good and the power supply used in such a case is good. The terminals may have a configuration as shown in FIGS. 13 and 14.

That is, as shown in the exploded view of FIG.
A cover 3m, which is made of an electric insulator made of synthetic resin and has a hollow interior, and a plate-like lid 3n, form a main body 3c, and the tip of the cover 3m is narrow at the center. A core 3p made of a body is provided with power supply terminal pieces 3f and 3f formed on both sides of the core 3p by bending a plate body made of brass or copper so as to be biased so that the tip ends come close to each other. There is. Further, the core 3p is pressed downward via a coil-shaped spring 3r locked to a protrusion 3q above the cover 3m so that the tip is always near the lower edge of the cover 3m. The lid 3n is attached to the cover 3m by the screw 3
13 and is integrated as shown in FIG. 13. At this time, the projection 3u of the lid 3n is engaged with the guide groove 3t formed on the surface of the core 3p. 3v is a notch formed in the cover 3m, and the core 3p is exposed. A power supply line (not shown) is connected above the power supply terminal pieces 3f and 3f.

A case where the power supply terminal 32 having such a structure is connected to the lamp 7 held by the lamp holder 65 of the second embodiment will be described. (Note that the drawing that cooperates with the lamp holder 65 is substantially the same as that of FIG. 10 and is therefore omitted.) The base 7 a of the lamp 7 is the holding projection 65 of the lamp holder 65.
the lamp cover member 15 held on the base plate 1
When the core 3p is pressed against the first side, the core 3p of the power supply terminal 32 first comes into contact with the upper surface of the protrusion 65c, and the core 3p is pressed by further pressing and moves backwards against the elasticity of the spring 3r. When the core 3p moves, the feeding terminal pieces 3f, 3f on both sides of the core 3p are exposed from the cutout 3v and electrically contact with the outer surfaces of the pins 7b, 7b on the slope of the protrusion 65c, At this point, the lamp cover member 15 is attached to the base body 11 with the attaching screws 99, 99.

Also in the case of this fixture L, the lamp 7 has the pin 7 of the base 7 through the power feeding terminal piece 3f of the power feeding terminal 32.
Power is supplied to the outer side surfaces of b and 7b, and the lamp 7 is reliably turned on.

When the lamp cover member 15 is removed from the base body 11 for replacement of the lamp 7, for example, the screws 99 and 99 are loosened in the reverse order of the above procedure.
5, the core 3p of the power supply terminal 32 is advanced to the notch 3v of the cover 3m by the elasticity of the spring 3r, and the power supply terminal pieces 3f and 3f are hidden so that the charging part is not exposed. .

Further, the structure of the power supply terminal, the substrate, the lamp holder, the lamp cover member, the chassis, the shade frame, etc., which receives or abuts the base pin of the lamp to make an electrical connection, is not limited to that of the embodiment. Assembling and locking of the detachable lamp cover member, chassis, shade frame, etc. may also be achieved by means of uneven fitting or a handle. Further, the shade frame forming the envelope of the luminaire may be a translucent material. Further, in the above embodiment, the case where the lighting fixture is assembled by using the ladder or the step is described, but the fixture may be attached or attached at a reachable portion without using the ladder or the like. The labor saving is not limited to inspection of equipment, repair and cleaning, and replacement of lamps.

[0051]

As described in detail above, according to the structure of the present invention, the number of working steps can be reduced as compared with the prior art at the time of mounting, removing or replacing the lamp, and the working efficiency can be improved, especially in high places. It is possible to provide a thin lighting fixture which has various advantages such that the number of operations is reduced, the safety can be improved, and the lamp can be reliably held.

[Brief description of drawings]

FIG. 1 is a sectional front view of a lighting fixture according to a first embodiment of the present invention.

FIG. 2 is a bottom view of FIG.

3 is a perspective view showing a removed chassis portion and a shade frame portion of FIG. 1. FIG.

FIG. 4 is a perspective view showing an electrical connection portion of FIG.

FIG. 5 is a perspective view of the lighting fixture of the second embodiment of the present invention seen from above. 4 is a front view showing a connection state between a base portion of a straight tube type fluorescent lamp mounted on the lamp holder of No. 4 and a power supply socket. FIG.

FIG. 6 is a perspective view of the lighting fixture of FIG. 5 as seen from below.

7A is a front view showing a part of the substrate seen from the direction of arrow 7A in FIG. 5, and FIG. 7B is a front view showing a part of the substrate seen from the direction of arrow 7B of FIG. .

8A is a front view showing a part of the lamp cover member viewed from the direction of an arrow 8A in FIG. 5, and FIG. 8B is an arrow 8 in FIG.
It is a front view which shows some lamp cover members seen from the B direction.

FIG. 9 is a perspective view showing a state where a straight tube fluorescent lamp is mounted on a lamp holder.

FIG. 10 is a front view showing a connection state between a base portion and a power supply terminal of a straight tube fluorescent lamp mounted on a lamp holder.

11 is an exploded perspective view showing the power supply terminal of FIG.

FIG. 12 is a perspective view showing a base portion of another lamp used in the present invention.

FIG. 13 is an exploded perspective view showing another power supply terminal used in the present invention.

FIG. 14 is a perspective view showing a power supply terminal of FIG.

[Explanation of symbols]

 L1, L2: Lighting equipment 1, 11: Base body 15: Lamp cover member 2: Lighting circuit device 3, 31, 32: Power supply terminal 4: Chassis 5: Light conductor 6: Support base 61: Power reception terminal 62: Socket 65: Lamp Holder 7: Lamp (straight tube fluorescent lamp) 8: Reflector 9: Shade frame

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

Claims (6)

[Claims] 1. A luminaire equipped with a light guide plate on a base, a lamp arranged in close proximity to one end face of the light guide plate, and a lighting circuit device, wherein the lamp supports the light guide plate and is detachable from the base. A lighting fixture which is held on the chassis side and is connected to the lighting circuit device by mounting the chassis on the base body. 2. The lighting device according to claim 1, wherein the chassis is provided with a lamp support base, and the support base and a power supply terminal provided on the base body are electrically connected to each other. Equipment. 3. The luminaire according to claim 2, wherein the chassis is a reflector. 4. A lighting fixture equipped with a light guide plate on a base body, a lamp disposed in close proximity to one end face of the light guide plate, and a lighting circuit device, wherein the lamp is a lamp cover member detachable from the base body. A lighting fixture, which is held and is connected to a lighting circuit device by mounting the lamp cover member on a base or a light guide plate. 5. The luminaire according to claim 4, wherein the lamp cover member is a reflector, and a lamp support base is provided. 6. The luminaire according to claim 5, wherein the lamp cover member is provided over a part or the entire circumference of the outer periphery of the light guide plate.