JP2717836B2 - lighting equipment - Google Patents

Description

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

(Prior Art) As a lighting fixture for room lighting, as shown in Japanese Utility Model Application Laid-Open No. 58-150213, a lamp holder unit is provided detachably with respect to the fixture main body, and the lamp holder unit is used for lamp replacement or the like. There is known a device which is detached together with a lamp from an apparatus main body so that the work such as replacement can be easily and safely performed.

(Problems to be Solved by the Invention) However, in the Japanese Utility Model Application Laid-Open No. 58-150213, the lower surface of the reflector disposed on the lower surface of the instrument body is
Since the lamp holder unit is mounted so as to protrude downward, the reflection of light from the lamp is hindered by the lamp holder unit, so that the reflection efficiency is reduced and the external appearance is impaired.

The present invention has been made in view of such a point,
It is an object of the present invention to provide a lighting fixture that can improve the light reflection efficiency of a lamp, maintain good appearance, and can smoothly and easily attach a lamp holder unit to a fixture body. is there.

[Constitution of the Invention] (Means for Solving the Problems) In order to achieve such an object, the present invention extends a lamp body from an end of a base body and a fixture body provided with a reflection plate on a lower surface of a chassis. A lamp holder unit extending out of the reflector, and a storage recess having a shape substantially corresponding to the base is formed on the lower surface of the reflection plate, and a guide projection is provided in the storage recess, and the base corresponds to the guide protrusion. A guide opening is formed, the guide opening is fitted to the guide projection, the base is stored in the storage recess, and the base is detachably locked in the storage recess by a locking mechanism. It is.

(Operation) In such a configuration, since the base of the lamp holder unit is housed in the housing recess on the lower surface of the reflector, no projecting portion is formed on the lower surface side of the reflector, so that the light of the lamp is not obstructed. It is possible to effectively reflect the light downward, the appearance is improved, and furthermore, a guide projection is formed in the storage recess, and a guide opening corresponding to the guide protrusion is formed in the base, so that the inside of the storage recess is formed. By fitting the guide opening into the guide projection when storing the substrate, the guide can be achieved, and the storing operation of the substrate can be performed smoothly, efficiently and accurately.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes an instrument main body. The instrument main body 1 has a reflecting plate 3 formed of a heat-resistant synthetic resin on a lower surface of a metal chassis 2.
The chassis 2 is connected to, for example, a power cord 7.
Is suspended horizontally from the ceiling in the room.

The lower surface of the reflector 3 projects spherically downward, and a storage recess 4 is formed in a portion extending from the center of the lower surface to the left and right sides. A circular space 5 is formed in the middle of the storage recess 4, and this circular shape is formed. A rectangular guide projection 6 is integrally provided at the center of the space 5. The lamp holder unit 9 is attached to the lower surface of the reflection plate 3 via the recess 4.

The lamp holder unit 9 is a hollow base formed in a shape substantially corresponding to the internal space shape of the storage recess 4.
And a lamp holder 11 attached to both ends of the base 10 so as to extend outward in the longitudinal direction thereof, such that the base 10 is substantially flush with the lower surface of the reflection plate 3. It is stored in the storage recess 4. A guide opening 12 corresponding to the guide projection 6 is formed at an intermediate portion of the upper surface of the base 10, and the guide projection 12 is fitted into the guide opening 12. It is exposed on the lower surface side of the base 10 through a circular hole 13 formed on the bottom surface. Magnets 16.16 are provided at both ends of the storage recess 4, and these magnets are provided at both ends of the upper surface of the base 10.
Contact pieces 17.17 made of a magnetic material corresponding to 16.16 are attached, and these contact pieces 17.17 are 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 10, and these locking pieces 18.18 are rotatably mounted on the side surfaces of the base 10 via pins 15.15 as shown in FIG. One end of each of the locking pieces 18.18 is exposed to the outside of the side surface as an operating portion 19.19, and a locking claw 20.20 is integrally formed at the other end thereof. A leaf spring 21.21 is provided on the back side of the operation portion 19.19, and the locking pieces 18.18 are elastically urged in one rotation direction by the leaf springs 21.21, and the urging force causes the locking claws 20.20 to move in the guides. The base 10 is locked in the storage recess 4 by engaging with slit-shaped locking holes 22 and 22 formed in the base end portions of both side surfaces of the projection 6.

One of the lamp holders 11 extending from the end of the base 10 is C
The other lamp holder 11 has a lamp socket body 26 on its upper surface side, and the lamp socket body 26 has
7.27 are integrally engaged with each other, and lamp holding pieces 28.28 are integrally formed on upper surfaces of the lamp sockets 27.27, respectively. An annular fluorescent lamp 29.29 is disposed on the upper surface side of these lamp holders 11.11, these fluorescent lamps 29.29 are held via lamp holding pieces 25.25.28.28, and plug pins (not shown) of these fluorescent lamps 29.29 are connected to the lamps. It is inserted into socket 27.27.

On the other hand, inside the chassis 2, a PC board 32 provided with various electronic components for lighting the inverter with respect to the fluorescent lamp 29.29.
The PC board 32 is mounted on the inner surface of the chassis 2 with a certain interval via a spacer 33. A switch unit 34 is provided below the PC board 32. As shown in FIG. 5, the switch unit 34 includes a body 35 and a cover for covering the upper surface of the body 35.
A mounting column 37.37 is integrally provided on the upper surface of the body 35, and these mounting columns 37.37 penetrate the cover 36 and protrude toward the upper surface thereof. These mounting posts 37.37 project through the through holes 39.39 formed in the PC board 32 to the upper surface side of the PC board 32, and their end faces abut the inner surface of the chassis 2. In this state, the mounting posts 37.37 The switch unit 34 is fixedly mounted on the chassis 2 by tightening the mounting screws 38.38.

The body 35 and the cover 36 each have a socket portion.
41.42.43 are integrally provided, and a switch switching mechanism 44 and a conductive plate 45 for switches are incorporated between the body 35 and the cover 36. And conductive plate for switch
One end of 45... Is formed with a connection hole 46 formed in the socket 43.
… Inserted inside. The socket portions 41 and 42 are joined to face each other, a conductive coil spring 48 is housed in a connection hole 47 formed in one socket portion 41, and is formed in the other socket portion 42. The conductive plates 50 for lamps are housed in the connection holes 49, and the coil springs 48 are in contact with the conductive plates 50 for lamps.

Connectors 53.54 are provided on the lower surface of the PC board 32, and each of the connectors 53.54 has a plurality of connector terminals 55 ... 56.
Each of the connector terminals 55 of one connector 53 is inserted into a corresponding one of the connection holes 46 of the socket portion 43 to come into contact with the switch conductive plate 45, and each of the connector terminals 55 of the other connector 54 is provided. 56 are connection holes of the socket portion 42, respectively.
Inserted inside 49... Are in contact with lamp conductive plates 50.

Further, a connector 59 is provided on the upper surface of the substrate 10 in the lamp holder unit 9, and the connector 59 has a plurality of connector terminals 60 which are electrically connected to the lamp socket 27.27.
These connector terminals 60 are inserted into the connection holes 47 of the socket portion 41, respectively, and elastically contact and contact the conductive coil springs 48. With such contact, the fluorescent lamp 29.29 passes through the PC board 32. Are energized.

Switch switching mechanism in the switch unit 34
An operation cord 61 is attached to the lower end of the 44, and this operation cord 61 is led out from the lower end of the body 35 and is suspended below the reflector 3 from the lower end surface of the guide projection 6. By operating the switch switching mechanism 44 by pulling the operation cord 61 downward, the fluorescent lamps 29.29 are turned on and off.

In such an operation, the tension of the operation cord 61 reaches the switch unit 34, and the switch unit 34
It is attached to the chassis 2 via 37.37, so that the tension of the operation cord 61 does not reach the PC board 32,
Therefore, deformation of the PC board 32 is prevented.

On the other hand, when replacing the fluorescent lamp 29.29, a fingertip is inserted into both sides of the base 10 of the lamp holder unit 9 through the circular space 5 of the storage recess 4 so that the operating portion 19.19 of the locking piece 18.18 is opposed to the leaf spring 21.21. The locking claw 20.20 is released from the locking hole 22.22 by this pressing. In this state, the base 10 is pulled down against the attraction between the magnet 16.16 and the contact piece 17.17, the lamp holder unit 9 is removed from the fixture body 1, and the fluorescent lamp 29.29 is replaced in this state. According to such a replacement work, the work can be easily, efficiently, and safely performed on a table, a floor, or the like.

After the replacement of the fluorescent lamp 29.29 is completed, the base 10
The guide opening 12 is fitted into the guide projection 6 of the reflection plate 3, and the base 10 is inserted into the storage recess 4 using the guide projection 6 as a guide. In response to this insertion, the connector terminals 60 of the connector 59 are connected to the connection holes 47 of the socket 41 of the switch unit 34.
, And comes into contact with the coil springs 48. Also, the contact pieces 17.17 on the upper surface of the base 10 come into contact with the magnets 16.16 to temporarily fix the base 10 in the storage recess 4. 20.20 is engaged with the locking hole 22.22 by the elastic force of the leaf spring 21.21, and the base 10 is completely fixed by this engagement.
Of the lamp holder unit 9 is completed.

By the way, the connector in the lamp holder unit 9
As shown in FIGS. 6 and 7, each connector terminal 60 of 59 has a tapered trapezoidal shape having inclined edges 60a.60a, as shown in FIGS.
47, the distal ends of the connector terminals 60... Slightly intrude into the coil springs 48 while elastically compressing the coil springs 48. Therefore, the inclined edges 60 a.
The contact between the PC board 32 and the lamp socket 27.27 is reliably achieved by making accurate contact with the wire portion 8.

On the other hand, the base 10 of the lamp holder unit 9 is housed in the housing recess 4 of the reflector 3 and attached to the fixture body 1, so that the lower surface of the base end 10 and the lower surface of the reflector 3 are flush. Therefore, the light when the fluorescent lamp 29.29 is turned on is effectively reflected downward without obstruction, so that good reflection efficiency can be maintained, and the entire lower surface side of the reflection plate 3 is kept clean and has a good appearance. be able to.

8 to 10 show another embodiment of the present invention.
In this embodiment, a locking claw 64 is provided at one end of the base 10.
A box-shaped slider 65 having an upper surface opened as a locking mechanism is slidably provided in the base 10 along its longitudinal direction.
Are elastically urged toward the other end of the base 10 via the coil spring 66. Knob 6 on both sides of this slider 65
7.67 and a locking piece 68.68 are integrally formed to protrude, and the knob 67.67 and the locking piece 68.68 protrude to the outer surface side of the base 10 through slide holes 69.69 and 70.70 formed in the side surface of the base 10. And the storage recess 4 in the reflection plate 3
A locking hole 71 corresponding to the locking claw 64 and a locking hole 72.72 corresponding to the locking piece 68.68 are formed in the inner peripheral portion of the locking member 64.

When the base 10 is mounted in the storage recess 4, the knob 67.6
7, the slider 65 is slid to one end of the base body 10 against the coil spring 66, and the locking claw 64 is
The base 10 is housed in the housing recess 4 while being inserted into the housing, and the knob 67.67 is released. Then, the slider 65 becomes the coil spring 6
The sliding force is applied to the other end side of the base 10 by the biasing force of 6, and the slide fits into the locking hole 72.72 of the locking piece 68.68, whereby the base 10 is locked and fixed in the storage recess 4. When the base 10 is to be removed, it can be easily removed by performing the above-described reverse operation.

[Effects of the Invention] As described above, according to the present invention, the storage recess is formed on the lower surface of the reflection plate, and the base of the lamp holder unit is stored in the storage recess. The reflection efficiency can be improved by improving the reflection efficiency, and the appearance can be improved. A guide projection is formed in the storage recess, and a guide opening corresponding to the guide projection is formed in the base. When the base is stored in the storage recess, the guide opening is fitted to the guide projection to guide the base. Therefore, there is an advantage that the storing operation can be performed smoothly, efficiently and accurately.

[Brief description of the drawings]

1 is a sectional view of a lighting apparatus according to an embodiment of the present invention, FIG. 2 is a bottom view of the lighting apparatus, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. FIG. 5 is an exploded perspective view of an essential part of an exploded state of the lighting fixture, FIG. 6 is a perspective view of an exploded state of a switch unit of the same, FIG. 6 is a cross-sectional view of a connecting portion between a connector terminal and a coil spring of the same. Is also a plan view,
FIG. 8 is a perspective view of an exploded state of a lighting apparatus according to another embodiment of the present invention, FIG. 9 is a sectional view of a part thereof, and FIG. 10 is a perspective view of a slider of the lighting apparatus. DESCRIPTION OF SYMBOLS 1 ... Instrument main body, 2 ... Chassis, 3 ... Reflection plate, 4 ... Storage recess, 6 ... Guide protrusion, 9 ... Lamp holder unit, 10 ...
Substrate, 11: lamp holder, 12: guide opening, 18: locking piece (locking mechanism), 65: slider (locking mechanism).

Claims (1)

(57) [Claims] 1. An apparatus main body having a reflector provided on a lower surface of a chassis, and a lamp holder unit having a lamp holder extending from an end of a base, and a lower surface of the reflector substantially corresponding to the base. Forming a recess having a shape such that the guide recess is formed in the recess, a guide opening corresponding to the guide protrusion is formed in the base, and the guide opening is fitted in the guide protrusion to bring the base into contact with the base. A lighting device, wherein the lighting device is housed in a storage recess, and the base is detachably locked in the storage recess by a locking mechanism.