JPH02227907A - Lighting fixture - Google Patents

Abstract

PURPOSE:To prevent poor continuity in a soldered part of a piece of electric parts and also poor electric leading to a lamp socket by furnishing No.2 socket part in contact with No.2 connector removably, and providing No.3 socket part which leads to the No.2 socket part and is in contact with the connector of a lamp holder unit removably. CONSTITUTION:Connector terminals 56 of No.2 connector 54 are inserted in connection holes 49... in No.2 socket part 42 and are in contact with lamp conductive plates 50. A connector 59 is installed on the oversurface of a base board 10 of a lamp holder unit 9, and connector terminals 60 of this connector are inserted in connection holes 47 in No.3 socket part 43 and are in contact with conductive coil springs 48 resiliently, and current is supplied to fluorescent lamp 29 29 through a PC base board 32. This eliminates deformation of the PC base board 32 to prevent poor continuity in the soldered part of a piece of electric parts and also poor electric leading of the PC base board 32 to a lamp socket 27.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) This invention relates to a lighting fixture that includes a PC board within the fixture body.

(Prior Art) In recent years, lighting fixtures that light fluorescent lamps using an inverter lighting method have been provided, and in such lighting fixtures, a PC board that includes electronic components for lighting the inverter is built into the fixture body. ing. A lead wire is connected to this PC board, this lead wire is led out to the outside of the device body, a lamp socket is attached to the lead-out end, and a fluorescent lamp arranged on the bottom side of the device body is attached to this lamp socket. plug bin is connected. Further, a switch unit is attached to the PC board, and an operating string is led out from this switch unit, and this operating string is pulled out to the outside of the device body, and the operating string is pulled downward to switch the switch and turn on the fluorescent lamp. It can be turned on or off.

(Problem to be Solved by the Invention) However, in lighting equipment with such a conventional configuration, tension is applied to the PC board when the operating string of the switch unit is pulled downward, and tension is applied when replacing the fluorescent lamp. When attaching and detaching the plug pin to the lamp socket, the tension applied to the lead wire of the lamp socket spreads to the PC board, deforming the PC board, and causing damage to the soldering of electronic components attached to the PC board. There is a risk that the lead wire may be damaged, resulting in poor conduction, and the connection portion between the lead wire and the PC board may be damaged, resulting in poor conduction to the lamp socket.

This invention was made with attention to these points, and its purpose is to reliably prevent conductivity failures in parts and failures in connection to lamp sockets when soldering electronic components due to deformation of the PC board. Our goal is to provide lighting equipment that can.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above object, the present invention includes a chassis, a reflector plate attached to the lower surface of the chassis, and a reflector plate that is detachable from the lower surface of the chassis. a lamp holder unit mounted on the chassis and including a lamp socket and a connector electrically connected to the lamp socket; a fluorescent lamp supported by the lamp holder unit and connected to the lamp socket; and a fluorescent lamp mounted on the lower surface of the chassis. A PC board equipped with electronic components for lighting, and this PC
? a switch unit provided with first and second connectors provided on the Ii board, an operating string attached to the chassis and led out to the outside of the instrument body, and a switch unit provided on the switch unit that is attached to and detached from the first connector; a first socket portion that freely contacts the second socket portion, a second socket portion that removably contacts the second connector, and a second socket portion that conducts with the second socket portion and removably contacts the connector of the lamp holder unit. 3 socket parts.

(Function) In this configuration, the switch unit is attached to the chassis, and electrical continuity between the PCJii board, the switch unit, and the lamp socket is achieved through removable contact between the connector and the socket, respectively. The tension caused by the operating string and the tension caused by replacing fluorescent lamps are caused by PC.
It does not affect the circuit board, therefore there is no deformation of the PCM board, and it reliably prevents conduction defects in soldering parts of electronic components attached to the PC board and conduction defects between the PC board and the lamp socket. Ru. In addition, Utsukai Showa 58-15
Publication No. 0213 discloses a lighting fixture in which a lamp holder unit is detachably attached to the fixture body, but this lighting fixture is not equipped with a PC board;
Furthermore, there is a risk that the tension applied when the operating string is operated is directly applied to the plug of the lamp holder unit, resulting in poor continuity.

(Example) Hereinafter, an example 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 the four storage sections 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 longitudinal direction, so 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. Furthermore, locking pieces 18.18 are provided as a locking mechanism 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
One end of 8 is exposed to the outside of the side surface as an operating part 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 19.21, and these leaf springs 21.21 elastically bias the locking pieces 18.18 in the direction of movement, and this biasing force causes the aforementioned The locking claws 20.20 engage with slit-shaped locking holes 22.22 formed at the base end portions of both sides of the guide protrusion 6, and this engagement locks the base body 10 in the storage recess 4. has been done.

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 bins (not shown) for these fluorescent lamps 29.29 are inserted into lamp sockets 27.27.

On the other hand, inside the chassis 2, there is a PCG equipped with various electronic components for lighting an inverter for the fluorescent lamps 29, 29.
A plate 32 is disposed, and this PC board 32 is attached to the inner surface of the chassis 2 via a spacer 33 at a constant interval. A switch unit 34 is provided below this PC board 32. As shown in FIG. 5, this switch unit 34 includes a body 35 and a cover 36 that covers the upper surface of the body 35. Mounting columns 37 and 37 are integrally provided on 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 37.37 are 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 and 38 are screwed in at the angle 37, and the switch unit 34 is fixedly attached to the chassis 2 by tightening these attachment screws 38 and 38.

First, second, and third socket portions 41, 42, and 43 are integrally installed in the body 35 and the cover 36, respectively, and a switch switching mechanism 44 and a switch are provided between the body 35 and the cover 36. Conductive plate 45...
・Incorporated. And conductive plate 45 for switch...
- One end portion is inserted into the connection hole 46 formed in the first socket portion 41. Further, the second socket part 42 and the third socket part 43 are joined facing each other, and a connection hole 49 formed in the second socket part 42 is connected to the second socket part 42 and the third socket part 43 .
A conductive plate 50 for the lamp is housed inside, and the third
Conductive coil springs 48 are accommodated in connection holes 47 formed in the socket portion 43 of the lamp, and these coil springs 48 are in contact with the lamp conductive plates 50, respectively. ing.

First and second connectors 53 are provided on the bottom surface of the PC board 32.
．． 54 are provided, and these first and second connectors 5
3.54 are a plurality of connector terminals 55..., 5, respectively.
6..., and each connector terminal 55... of the first degree connector 53 is inserted into the connection hole 46... of the first socket portion 41 to connect the switch conductive plate 45.
... and each connector terminal 5 of the second connector 54
6 are inserted into the connection holes 49 of the second socket portion 42, respectively, and are in contact with the 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 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 third socket portion 43 and elastically abut against the conductive coil springs 48 .... This contact energizes the fluorescent lamp 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 the operating string 61 is led out from the lower end of the body 35 and suspended below the reflector 3 from the lower end surface of the guide protrusion 6. ing. 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. (This prevents the PC board 32 from being deformed.)

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 pressing 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 is connected to the third terminal of the switch unit 34.
The contact piece 17.17 on the upper surface of the base body 10 contacts the magnet 16.16, and the base body 10
is temporarily fixed in the storage recess 4, and the locking pieces 18 and 18 are
The locking pawl 20.20 engages with the locking hole 22.22 due to the elastic force of the leaf spring 21.21, and this engagement completely fixes the base 10 and prevents the lamp holder unit 9 from being attached to the instrument body 1. is completed.

By the way, the connector 5 in the lamp holder unit 9
As shown in FIG. 6 and FIG. 7, each of the connector terminals 60 . When entering the connection hole 47 of the portion 43, the tip end of each connector terminal 60 slightly enters the inside of the coil spring 48 while elastically compressing it, so that the inclined edge 60a , 60a accurately contact 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.

[Effects of the Invention] As explained above, according to the present invention, the switch unit is attached to the chassis, and the conduction between the PC board, the switch unit, and the lamp socket is established through removable contact between the connector and the socket portion, respectively. Therefore, the tension caused by the operation string or the tension caused by replacing a fluorescent lamp will not be applied to the PC board (therefore, the
There is no deformation of the ci board, and the soldering of electronic components attached to the PC board has the effect of reliably preventing occurrence of poor conduction between parts and poor conduction between the PC board and the lamp socket.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, FIG. 1 is a sectional view of the lighting equipment, FIG. 2 is a bottom view, ¥S3 is a sectional view taken along the line ■-■ in FIG. 2, and FIG. 4 5 is an exploded perspective view of the main parts of the lighting equipment, FIG. 5 is an exploded perspective view of the switch unit, FIG. 6 is a sectional view of the connection between the connector terminal and the coil spring, and FIG. 7 is a plan view. It is. DESCRIPTION OF SYMBOLS 1... Appliance body, 2... Chassis, 3... Reflector, 9... Lamp holder unit, 27... Lamp socket, 29... Fluorescent lamp, 32... PC board,
34... Switch unit, 41.42.43...
Socket part, 53.54.59... Funecta. 3 4 Figure 4

Claims (1)

[Claims] A chassis, a reflector attached to the lower surface of the chassis, a lamp holder unit detachably attached to the lower surface of the reflector, and provided with a lamp socket and a connector electrically connected to the lamp socket, and the lamp holder unit. a fluorescent lamp supported by the lamp socket and connected to the lamp socket; a PC board attached to the lower surface of the chassis and equipped with electronic components for lighting the fluorescent lamp;
first and second connectors provided on the PC board; a switch unit that is attached to the chassis and includes an operating string that leads out of the device main body; and a switch unit that is provided on the switch unit and that is connected to the first connector. A first socket portion that is in detachable contact with the second socket portion, a second socket portion that is in detachable contact with the second connector, and a second socket portion that is electrically connected to the second socket portion and is in detachable contact with the connector of the lamp holder unit. A lighting device comprising: a third socket portion.