JPH02227906A - Lighting fixture - Google Patents

Abstract

PURPOSE:To enhance the reflection efficiency of the light from lamp and secure fine appearance by accommodating a base body in a recess while a guide mouth is fitted on a guide boss, and detaining this base body in the recess with the aid of a detaining mechanism in such a way as removable. CONSTITUTION:The undersurface of a reflex plate 3 protrudes downward spherically, and a recess 4 is formed in that part of undersurface which is stretching to the left and right, and a circular cavity 5 is formed in the middle of this recess 4, and a square guide boss 6 is installed protrudingly in the center of this circular cavity 5 in such a way as in a solid body. A lamp holder unit 9 is fixed to the undersurface of the reflex plate 3 through the recess 4. Accommodation of the base body of lamp holder unit 9 in the recess 4 in undersurface of reflex plate 3, in such a fashion, eliminates generation of protrusion at the undersurface of the reflex plate 3 to enable the light from lamp to be reflected downward effectively without any obstruction. Also the appearance will be finer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a lighting fixture that includes a lamp holder unit that is detachable from the fixture body.

(Prior art) As a lighting fixture for indoor lighting, Utility Model Application No. 58-15021
As seen in Publication No. 3, the lamp holder unit is removably attached to the appliance body, so that when replacing the lamp, the lamp holder unit and the lamp can be removed from the appliance body and replacement operations can be done easily and safely. There are known things that have made it possible to do this.

(Problem to be Solved by the Invention) However, in the device disclosed in Japanese Utility Model Application Publication No. 58-150213, a lamp holder unit is attached to the lower surface of the reflector plate disposed on the lower surface of the device body so as to protrude downward. Therefore, the reflection of the lamp's light is blocked by the lamp holder unit, reducing the reflection efficiency.
Moreover, the aesthetic appearance is also impaired.

This invention was made with attention to these points, and its purpose is to improve the light reflection efficiency of the lamp, maintain a good aesthetic appearance, and further improve the attachment of the lamp holder unit to the fixture body. An object of the present invention is to provide a lighting fixture that can be used smoothly and easily.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention includes a device body having a reflector provided on the lower surface of the chassis, and a lamp holder extending from the end of the base body. a lamp holder unit that is protruded, a storage recess having a shape that substantially corresponds to the base body is formed on the lower surface of the reflecting plate, a guide protrusion is provided in the housing recess, and a guide protrusion is provided on the base body that corresponds to the guide protrusion. A guide port is formed, the guide port is fitted into the guide protrusion, the base body is stored in the storage recess, and the base body is removably locked in the storage recess by a locking mechanism. It is.

(Function) In this configuration, since the base of the lamp holder unit is housed in the storage recess on the lower surface of the reflector, there is no protruding portion on the lower surface of the reflector, which prevents the light from the lamp from being obstructed. It is possible to effectively reflect the light downward without any interference, and the appearance is also good.Furthermore, since a guide protrusion is formed in the storage recess and a guide rod corresponding to this guide projection is formed in the base body, the light can be reflected downwardly in the storage recess. When storing the base body, by fitting the guide opening into the guide protrusion, the base body can be guided and the base body can be housed smoothly, efficiently and accurately.

(Embodiment fl) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes the main body of the device, and this main body 1 is made up of a metal chassis 2 with a reflective plate 3 made of heat-resistant synthetic resin attached to the bottom surface of the device. suspended horizontally from the ceiling.

The lower surface of the reflecting plate 3 protrudes downward in a spherical shape, and a storage recess 4 is formed in a portion extending from the center of the lower surface to the left and right sides thereof.A circular space 5 is formed in the middle of this storage recess 4. A rectangular guide protrusion 6 is integrally provided in the center of the space 5 to protrude.

A lamp holder unit 9 is attached to the lower surface of the reflecting plate 3 via the storage recess 4.

This lamp holder unit 9 consists of a hollow base 1 formed in a shape substantially corresponding to the shape of the internal space of the storage recess 4.
0, and a lamp holder 11 attached to both ends of the base 10 so as to extend outward in the elongated direction, such that the base 10 is substantially flush with the lower surface of the reflector 3. It is stored in the storage recess 4. and the base 10
A guide protrusion 12 corresponding to the guide protrusion 6 is formed in the middle part of the upper surface, the guide protrusion 6 is fitted into the guide protrusion 6, and the lower end surface of the guide protrusion 6 forms a circular shape formed on the bottom surface of the guide protrusion 12. It is exposed on the lower surface side of the base body 10 through the hole 13. Magnets 16.16 are provided at both ends of the storage recess 4, and contact pieces 17.17 made of a magnetic material corresponding to these magnets 16.16 are attached to both ends of the upper surface of the base body 10.
7°17 is attracted to the magnet 16.16. Further, locking pieces 18.18 are provided as locking mechanisms on both sides of the intermediate portion of the base body 10, and these locking pieces 18.18 are connected to the base body 10 through pins 15°15, as shown in FIG.
These locking pieces 18.1 are rotatably attached to the sides of the
8 is exposed to the outside of the side surface as an operating portion 19.19, and a locking pawl 20.20 is integrally formed and protruded from the other end. Leaf springs 21.21 are provided on the back side of the operating portion 19.19, and these leaf springs 21.21 elastically bias the locking pieces 18.18 in the direction of one rotation, and this biasing force The locking claws 20.20 engage with slit-shaped locking holes 22.22 formed at the proximal end portions of both sides of the guide protrusion 6, and this engagement causes the base body 10 to lock in the storage recess 4. It has been stopped.

One lamp holder 11 extending from the end of the base body 10 has a C-shaped lamp holding piece 25.25 integrally, and the other lamp holder 11 has a lamp socket body 26 on its upper surface side. Lamp sockets 27.27 are integrally formed with the lamp socket body 26, and lamp holding pieces 28.28 are integrally formed to protrude from the upper surface portions of these lamp sockets 27.27, respectively. An annular fluorescent lamp 2 is placed on the top side of these lamp holders 11 and 11.
9.29 are arranged, and these fluorescent lamps 29.29 are held via lamp holding pieces 25.25.28°28,
Plug pins (not shown) of these fluorescent lamps 29.29 are inserted into lamp sockets 27.27.

On the other hand, inside the chassis 2, a PC board 32 equipped with various electronic components for lighting an inverter for the fluorescent lamps 29, 29 is arranged. It is installed with an opening. A switch unit 34 is provided below this PC board 32. As shown in FIG. 5, the switch unit 34 includes a body 35 and a cover 36 that covers the upper surface of the body 35. Mounting columns 37, 37 are integrally protruded from the upper surface of the body 35, and these mounting columns 37. 37 penetrates the cover 36 and protrudes from the upper surface thereof. These mounting pillars 37 and 37 are connected to the PC board 32.
It protrudes to the upper surface side of the PC board 32 through the through hole 39° 39 formed in the hole 39, and its end surface abuts the inner surface of the chassis 2. In this state, the mounting post 37 is inserted from the upper surface of the chassis 2.
Attachment screws 38, 38 are screwed in at the angle 37, and the switch unit 34 is attached and fixed to the chassis 2 by tightening these attachment screws 38, 38.

The body 35 and the cover 36 are each integrally provided with socket portions 41, 42, 43, and a switch switching mechanism 44 is provided between the body 35 and the cover 36.
and a switch conductive plate 45... are incorporated.

One end portion of the switch conductive plate 45 is inserted into a connection hole 46 formed in the socket portion 43. Further, the socket parts 41 and 42 are joined facing each other, and a connection hole 47 formed in one socket part 41 is
...A conductive coil spring 48... is housed inside,
In addition, the connection hole 49 formed in the other socket portion 42...
Lamp conductive plates 50 are housed inside, and the coil springs 48 are in contact with these lamp conductive plates 50.

Connectors 53 and 54 are provided on the lower surface of the PC board 32, and each of these connectors 53 and 54 has a plurality of connector terminals 55..., 56..., and one connector 5
Each of the connector terminals 55 of the other connector 54 is inserted into the connection hole 46 of the socket portion 43 and comes into contact with the switch conductive plate 45 . ... are respectively inserted into the connection holes 49 of the socket portion 42, and the lamp conductive plates 50...
・In contact with

Further, a connector 59 is provided on the upper surface of the substrate 10 in the lamp holder unit 9, and this connector 59 has a plurality of connector terminals 60 connected to the lamp socket 27, 27.
..., and these connector terminals 60 ... are respectively inserted into the connection holes 47 ... of the socket portion 41 and come into elastic contact with the conductive coil springs 48 .... This contact energizes the fluorescent lamps 29, 29 through the PC board 32.

An operating string 61 is attached to the lower end of the switch switching mechanism 44 in the switch unit 34, and this operating string 61 is led out from the lower end of the body 35 and connected to the guide protrusion 6.
The lower end surface of the reflector plate 3 is suspended below. By pulling the operating string 61 downward and operating the switch changeover mechanism 44, the fluorescent lamps 29 and 29 are turned on and off.

During such an operation, the tension of the operating string 61 is applied to the switch unit 34, but this switch unit 34 is attached to the chassis 2 via the mounting posts 37, 37, so the tension of the operating string 61 is applied to the switch unit 34. Therefore, deformation of the PC board 32 is prevented.

On the other hand, when replacing the fluorescent lamp 29.29, insert your fingertips into both sides of the base 10 of the lamp holder unit 9 through the circular space 5 of the storage recess 4 and insert the locking pieces 18.1.
The operating portion 19.19 of 8 is pressed against the leaf spring 21.21, and this pressure causes the locking pawl 20.20 to disengage from the locking hole 22.22.

Then, in this state, magnet 16.16 and contact piece 1
The lamp holder unit 9 is removed from the appliance main body 1 by pulling the base 10 downward against the suction force of the fluorescent lamps 29 and 29. In this state, the fluorescent lamps 29 and 29 are replaced. According to this type of replacement work, the work can be performed easily, efficiently, and safely on a table or the floor.

After the replacement of the fluorescent lamps 29 and 29 is completed, the Gytro 12 of the base 10 is fitted into the guide protrusion 6 of the reflector 3, and the base 10 is inserted into the storage recess 4 using the guide protrusion 6 as a guide. . In response to this insertion, each connector terminal 60 of the connector 59 enters the connection hole 47 of the socket portion 41 of the switch unit 34, and the coil spring 4
contact piece 17.8 on the upper surface of the base body 10.
17 comes into contact with the magnet 16.16, and the base body 10 is temporarily fixed in the storage recess 4. Furthermore, the locking claw 20.20 of the locking piece 18.18 is moved into the locking hole 22 by the elastic force of the leaf spring 21.21. .22, and this engagement completely fixes the base 10 and completes the attachment of the lamp holder unit 9 to the instrument body 1.

By the way, the connector 5 in the lamp holder unit 9
As shown in FIGS. 6 and 7, each of the connector terminals 60 . When entering the connection hole 47..., the tip of each connector terminal 60... slightly enters the inside of the coil spring 48 while elastically compressing it, so that the inclined edges 60a, 60a are It makes precise contact with the wire portion of the coil spring 48, thereby ensuring electrical continuity between the PC board 32 and the lamp socket 27, 27.

On the other hand, the base 10 of the lamp holder unit 9 is housed in the storage recess 4 of the reflector 3 and attached to the instrument body 1, so that the lower surface of the base end 10 and the lower surface of the reflector 3 are flush with each other. Therefore, the light from the fluorescent lamps 29, 29 when turned on is effectively reflected downward without any obstruction, maintaining good reflection efficiency, and the overall appearance of the lower surface of the reflector 3 is clean, giving a good appearance. can be retained.

Other embodiments of the present invention are shown in FIGS. 8 to 10,
In this embodiment, a locking pawl 64 is provided at one end of the base 10, and a box-shaped slider 65 with an open top is provided inside the base 10 as a locking mechanism along its longitudinal direction. This slider 65 is elastically biased toward the other end of the base body 10 via a coil spring 66. On both sides of this slider 65, there are 7 knob pieces 67, 67 and locking pieces 68°68.
These knob pieces 67.67 and locking pieces 68.68 protrude to the outer surface of the base body 10 through slide holes 69.69 and 70.70 formed on the side surface of the base body 10.

A locking hole 71 corresponding to the locking pawl 64 is provided in the inner circumferential portion of the storage recess 4 in the reflection plate 3, and a locking hole 71 corresponding to the locking claw 64 is provided in the inner peripheral portion of the storage recess 4.
．． Locking holes 72, 72 corresponding to 68 are formed, respectively.

When installing the base body 10 in the storage recess 4, use the knob piece 67.
．． 67, slide the slider 65 toward one end of the base 10 against the coil spring 66, and in this state, the locking claw 6
4 into the locking hole 71, the base body 10 is stored in the storage recess 4, and the knob pieces 67, 67 are released. Then, the slider 65 slides toward the other end of the base 10 by the biasing force of the coil spring 66, and this slide causes the locking pieces 68, 68
This fits into the locking holes 72, 72 of the base body 10, thereby locking and fixing the base body 10 in the storage recess 4. When the base body 10 is to be removed, it can be easily removed by performing the above-mentioned operation in the reverse order.

[Effects of the Invention] As explained above, according to the present invention, a storage recess is formed on the lower surface of the reflector, and the base of the lamp holder unit is stored in the storage recess, so that the light from the lamp is not obstructed. It is possible to improve the reflection efficiency by effectively reflecting the light without any interference, and the appearance is also improved. A guide protrusion is formed in the housing recess, and a guide port corresponding to the guide protrusion is formed on the base body, and when the base body is stored in the housing recess, the guide port is fitted into the guide protrusion to guide the base body. Because I did it,
There is an advantage that the storage work can be carried out smoothly, efficiently, and accurately.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a lighting fixture according to an embodiment of the present invention;
Figure 2 is a bottom view, Figure 3 is a sectional view taken along the line ■-■ in Figure 2, Figure 4 is an exploded perspective view of the main parts of the lighting fixture, and Figure 5 is the same lighting fixture. FIG. 6 is a cross-sectional view of the connecting portion between the connector terminal and the coil spring of the lighting device, and FIG. 7 is a plan view of the switch unit in an exploded state.
FIG. 8 is an exploded perspective view of a lighting device according to another embodiment of the present invention, FIG. 9 is a sectional view of a portion thereof, and FIG. 10 is a perspective view of a slider of the lighting device. DESCRIPTION OF SYMBOLS 1... Apparatus main body, 2... Chassis, 3... Reflection plate, 4... Storage recess, 6... Guide protrusion, 9... Lamp holder unit, 10... Base, 11... - Lamp holder, 12... Gytro, 18... Locking piece (locking mechanism), 65... Slider (locking mechanism). Applicant's agent Patent attorney Takehiko Suzue Figure 4 Figure 5 Figure 1 Figure 8

Claims (1)

[Claims] A device main body having a reflector provided on the lower surface of the chassis, and a lamp holder unit having a lamp holder extending from an end of the base, and a storage recess shaped approximately corresponding to the base on the lower surface of the reflector. a guide protrusion is provided in the storage recess, a guide port corresponding to the guide protrusion is formed in the base body, and the guide port is fitted to the guide protrusion to store the base body in the storage recess. A lighting device characterized in that the base body is removably locked in the storage recess by a locking mechanism.