JPH046044B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a component arrangement structure of a lighting fixture that lights a lamp at high frequency using an inverter.

[Prior Art] FIG. 14 shows an exploded perspective view of a conventional lighting device, in which a printed circuit board 104 is placed on the lower surface of a metal disk-shaped base 101 via an insulating plate 103 using a locking support 102. Electronic components constituting a lighting circuit 105 for lighting the lamp are mounted on the lower surface of the printed circuit board 104. A U-shaped mounting bracket 106 is fixed to approximately the center of the lower surface of the printed circuit board 104 with a tapping screw 119. A power switch 108 with a pull ring 107 hanging from the lower surface of the mounting bracket 106 and a miniature bulb socket 109 are fixed with screws 110 and 111, respectively. This power switch 108 and miniature bulb socket 109 are connected to three ports from the printed circuit board 104.
A lamp socket 113 supporting the lamp is also connected to the printed circuit board 104 by a lead wire 114. Note that since this lamp socket 113 is for two lamps, two socket parts 115 are formed, and the lead wire 114
I also use 8 pieces. And both lead wires 11
The printed circuit board 104 side of 2,114 is connected by soldering. Further, a lead wire 116 is led out from the ground pattern of the printed circuit board 104.
A ground terminal 117 in the shape of a glasses terminal is provided at the tip of this lead wire 116.
7 is a metal base 101 with a tapping screw 11
8 and is screwed and grounded. base 101
A cover 120 is attached to the bottom side of the tapping screw 12.
6, and the cover 120 has a notch 121 from which the lamp socket 113 protrudes. Note that the lamp socket 113 is attached to the base 1.
01 and the cover 120 through their ribs 127 to be fixed. In the center of the cover 120 is a hole 1 through which the miniature ball 122 and the pull ring 107 are inserted.
23 is perforated. Further, a support spring 124 is attached to the lower surface of the cover 120 by a rivet 125 to pair with the lamp socket 113 and support the lamp.

In such a conventional example, the lead wires 112, 114, 1 are connected from the printed circuit board 104 of the lighting block.
16, it was connected to a lamp socket 113, a power switch 108, a miniature bulb socket 109, and a base 101. If this connection is made into a terminal without a lead wire, the position of the printed circuit board 104 may shift,
It is necessary to consider methods that have less impact on dimensional shrinkage.

[Problems to be Solved by the Invention] The present invention has been provided in view of the above-mentioned points, and aims to arrange components with less influence on shrinkage, misalignment, cracking, etc. of printed circuit boards. The present invention provides a component arrangement structure for a lighting fixture.

[Means for Solving the Problems] [Operation] The present invention provides a lamp, a lamp holder that supports the lamp and applies lighting voltage to the lamp, a printed circuit board on which a lighting circuit for lighting the lamp is mounted, A lighting fixture having a wiring component such as a composite component that integrates a power switch, a socket for a small bulb, and a power terminal part, in which a first connection terminal to which a terminal of a lamp holder is connected is mounted on an end of a printed circuit board. At the same time, the printed circuit board is fixed to the base by a fixing member on the first connecting terminal side, and a second terminal is connected to a terminal of a wiring component such as a composite component at a position on the printed circuit board apart from the first connecting terminal. If the printed circuit board shrinks or expands by mounting a connecting terminal and making the contact surface between the terminal of a wiring component such as a composite component and the second connecting terminal parallel to the line connecting both connecting terminals. The first connection terminal part is fixed to the base by a fixing member,
The contraction and expansion of the printed circuit board occurs in the part of the printed circuit board on the side of the second connection terminal, and by making the contact surface of the terminal parallel to the line connecting both connection terminals, the terminal of the second connection terminal It is characterized by preventing direct force from being applied to the terminal, thereby preventing stress from being applied to the soldered portion of the terminal.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. First, the overall configuration will be explained with reference to FIG. 2, which is an exploded perspective view. A printed circuit board 3 is fixed to the lower surface of a metal disc-shaped base 1 with an insulating plate 2 interposed therebetween by a locking support 4. Printed circuit board 3
Mounted on the mounting surface are electronic components constituting a lighting circuit for lighting the lamp 5 (FIG. 1), and this lighting circuit is comprised of, for example, a transistor-type inverter circuit. A power switch,
Wiring parts such as a composite part 6 that integrates a miniature bulb socket and a power terminal part are arranged, and a lamp holder 7 is arranged in a hole 3b drilled in the end of the printed circuit board 3. The composite part 6 is attached to the base 1 with tapping screws 16. A lamp support fitting 7a is attached to the lamp holder 7. Note that the composite component 6 and lamp holder 7 will be described later. A hollow wiring component support 8 to which the composite component 6 is attached is interposed between the base 1 and the printed circuit board 3, and a hollow lamp holder support 9 to which the lamp holder 7 is attached is also connected to the base 1, as will be described later. It is arranged to be interposed between the printed circuit board 3 and the printed circuit board 3.

From the top of the base 1, the power connector 10 is inserted into hole 1.
It is attached to the power terminal portion of the composite component 6 via a. Cord 11 having a power connector 10 at the tip
A cord stopper 12 is provided. base 1
A cord cover 13 that covers the cord 11, power connector 10, etc. is attached to the upper surface of the housing. A cover 14 covering the electronic components of the printed circuit board 3 is attached to the lower surface of the base 1 with tapping screws 15.
The cover 14 has a flat dome shape, and a recess 14a is formed in the center. A potbell-shaped hole 14b is bored in the ceiling surface of the recess 14a of the cover 14, through which the pull ring 17 and the miniature ball 18, which are suspended from the composite component 6, are inserted, and the opening surface of the recess 14a is closed with a transparent cover 19. be done. In the center of the transparent cover 19, there is a hole 19a through which a pull string connected to the pull ring 17 is inserted.
is drilled there. Further, a notch 14a is cut out in a part of the cover 14 to allow the lamp holder 7 to escape. Furthermore, the cover 14 on the opposite side of the notch 14c
A lamp support spring 20 is attached to the lower surface of the lamp with a rivet 20a. Incidentally, an earth screw 21 is screwed onto the upper surface of the base 1.

Next, the composite component 6 will be explained based on FIGS. 3 to 5. This composite component 6 is composed of a body 22 made of an insulating material to which each member is attached, and a cover 23 made of an insulating material as well, and a power terminal part 24 provided on the top side and a power switch provided inside. 25 and a socket 26 for the miniature ball 18 are integrally formed. Four terminal plates 27 to 30 are arranged on the outer surface of the body 22. The two inner terminal boards are switch contact terminal board 2.
7 and 28, and the power terminal plate 29 and the ground terminal plate 30 are on the outside. Caulking ribs 31a to 31d are protruded from the outer surface of the body 22, and the caulking holes 32a to 32d of the terminal boards 27 to 30 are fitted into the caulking ribs 31a to 31d, and the terminal plates 27 to 30 are crimped. It is fixed at 22. Terminals 27a to 30a are formed at the ends of each of the terminal plates 27 to 30 to be in contact with terminals of connection terminals to be described later. They are now being installed side by side. Note that the terminal plates 27 and 28 are surrounded by an insulating wall 22a for insulation. body 22
Mounting holes 22b for fixing to the base 1 at both ends of the
is perforated, and an opening hole 22c for caulking the power terminal board 29 and a circuit board to be described later is provided.
The power terminal board 29 has a caulking hole 29b for caulking with the circuit board, and the ground terminal plate 30 has a hole 30b that corresponds to the mounting hole 22b of the body 22 and into which the tapping screw 16 is inserted. .
The ground terminal plate 30 is grounded to the base 1 by inserting the tapping screw 16 through the hole 3b and screwing it into the base 1.

There are three electrical circuit boards 33 to 35 inside the body 22.
are arranged, and caulking holes 3 are provided in each circuit board 33 to 35.
7a to 37c are provided, and this caulking hole 3
Rib 36a-3 for caulking corresponding to 7a-37c
6c is provided to protrude inside the body 22. Cylindrical power terminal pins 33a, into which pins of the power connector 10 are inserted and connected, are provided at the ends of the circuit boards 33 and 34.
34a is integrally formed. The other end of the circuit board 33 has a caulking hole 33b for caulking with the mandrel 41.
is formed. A miniature bulb 1 is attached to the other end of the circuit board 34.
An elastic receiving fitting 34b is integrally formed in contact with the cathode side of 8. This receiving metal fitting 34
b will be disposed axially on the inner surface of the socket 26. A contact 35a constituting a switch on the anode side of the miniature bulb 18 is formed at one end of the circuit board 35, and an elastic contact piece 35b that makes contact with the anode of the miniature bulb 18 is integrally formed at the other end. ing.
Power terminal pins 33a, 34a of circuit boards 33, 34
is positioned in the recess 24a of the power terminal portion 24.

A switch stepped portion 39 constituting the power switch 25 is formed in a circumferential shape in a portion surrounded by an insulating wall 38 and the like inside the body 22. Contacts 40a, 40b, 40c are arranged in this switch stepped portion 39, and the switch contact terminal plate 2 on the outside of the body 22
7 and 28 are caulked and fixed. One end 41a side of the mandrel 41 is caulked to the caulking hole 33b of the circuit board 33, and the tip end is caulked to the caulking hole 4 of the body 22.
2 and is caulked on the outside of the body 22.
The mandrel 41 includes a conductive spring 43 that electrically connects the mandrel 41 and the stepped wheel 44, a stepped wheel 44 that rotates to switch contacts, and a handle 45 for operation.
After pulling the handle metal fitting 48 which is caulked to this handle 45 and moves the cart 44 step by step by the movement of the handle 45, and the pull ring 17 which is hooked on the locking portion 45a of the handle 45, the handle 44 is moved.
A return spring 46 for returning the parts to their original positions is inserted, and finally a stopper 47 for preventing the above-mentioned parts from coming off is attached to the other end 41b of the mandrel 41, and the stopper 4
The other end 41b of the mandrel 41 is crimped into the hole 47a of No.7.

The body 22 and the cover 23 are fixed by driving rivets 49. The body 22 and the cover 23 have a threaded portion 50 of the socket 26 for attaching the miniature ball 18.
A drawer portion 51 for pulling out the pull ring 17 is also formed. cover 2
As shown in FIG. 4, there is a rib 52 on the inside of 3 that serves as a stopper for the handle 45 when the pull ring 17 is pulled.
, a convex rib 53 that presses the caulked portions of the circuit boards 33, 34, and 35, and a stopper 54 of the contact piece 34b are formed. Further, a stepped portion 55 is formed in the power terminal portion 24 to push and hold the power connector 10 therein.

Next, the lamp holder 7 will be explained with reference to FIGS. 6 and 7. Since the lighting device of the present invention is of a two-lamp type, two socket portions 64 of the lamp holder 7 are formed. The lamp holder 7 includes a body 61 made of synthetic resin and covers 62 and 63 fitted on both sides of the body 61 to form a casing. Four insertion holes 65 into which lamp pins are inserted are bored in the flat part of the socket part 64, and arc-shaped lamp support parts 66 are integrally formed on both sides, and the end face of the shorter lamp support part 66 has a fixing rib 66a to which the lamp support fitting 7a is attached.
are integrally protruded. Storage portions 69 are formed on both sides of the body 61 with insulating ribs 68 interposed therebetween, in which electric wires 67 are stored. Lamp pin contacts 70 are connected to one end of the electric wire 67 by caulking or spot welding, and the other end is connected to a terminal 71 for connection to the electronic circuit of the printed circuit board 3 in the same manner as described above. . A pair of ribs 72, 72 are formed on the body 61, and this rib 7
An insertion piece 71a of the terminal 71 is inserted between 2 and 72 to fix the terminal 71. A bent portion 71b is formed at the tip of the terminal 71 that connects to the connector of the printed circuit board 3. Note that this bent portion 71b does not necessarily have to make the contact more stable.

A slit 73 from which the terminal 71 protrudes is formed at the end of the covers 62, 63, and a holding piece 74 for holding the terminal 71 is integrally formed next to this slit 73. As shown in FIG. 6, the terminals 71 are made to protrude from the slits 73 of the covers 62, 63 so as to be brought into contact with the terminal side of the connector of the printed circuit board 3. A step 75 for positioning the covers 62 and 63 is formed on the inside of the peripheral wall of the body 61, and a rib 76 pressed by the cover 14 and a collar 77 for protecting the terminal 71 are integrally formed on the outside surfaces of the covers 62 and 63. It is formed in Furthermore, a cover 6 is provided on the end surface of the insulating rib of the body 61.
Four fixing ribs 78 for fixing (for example, caulking) the fixing ribs 78 are provided, and holes 79 corresponding to the fixing ribs 78 are bored in the covers 62, 63. A tongue piece 80 that is inserted into the lamp holder support 9 is integrally protruded from the lower surface of the body 61, and a rib 80a that is inserted into a hole in the base 1 for positioning is integrally formed on the end surface of the tongue piece 80. is formed.

FIG. 8 shows the shape of the printed circuit board 3, in which a hole 3a, which serves as an escape hole for the composite component 6 and into which a wiring component support 8 is mounted, is drilled in the center O of the lighting fixture. Further, at the end of the printed circuit board 3, a hole 3b for escaping the lamp holder 7 and into which the lamp holder support 9 is mounted is formed long in the vertical direction. These two holes 3a and 3b are bored so that their longitudinal directions are orthogonal (approximately T-shaped). In this way, the lamp holder 7 and the composite part 6
Since the corners of the holes 3a and 3b of the printed circuit board 3 are arranged perpendicularly to each other, the distance between the corners of the holes 3a and 3b of the printed circuit board 3 is large, making it difficult for cracks to occur. Connecting terminals 82 that come into contact with the terminals 71 of the lamp holder 7 are arranged on both sides of the hole 3b, and
Each terminal plate 2 of the composite component 6 is placed above the hole 3a formed in a substantially L shape, that is, on the opposite side from the connection terminal 82.
A connecting terminal 81 that contacts terminals 7 to 30 is attached. Therefore, a space can be secured between the composite component 6 and the lamp holder 7, making it easier to arrange the electronic components. FIG. 1 is a plan view showing the arrangement of each component.

FIG. 9 shows a perspective view of the connection terminals 81 and 82, and the connection terminal 81 made of an insulating material has four storage recesses 83 formed in the longitudinal direction, and the connection terminals 81 and 82 are formed in the storage recesses 83. A blade receiving spring 84, which is integrated with a connecting piece 84a extending vertically from the lower surface of the terminal 81, is installed in each terminal. Connection piece 84a of blade holder spring 84
is connected to the circuit pattern of the printed circuit board 3 by soldering or the like. There are grooves 83 on both sides of the storage recess 83.
A is cut out in each case. Groove 83 of connection terminal 81
As shown in FIG. 10, a is a relief for inserting the terminal plates 27 to 30 of the composite component 6 and the terminal 71 of the lamp holder 7, and also serves as a relief for the terminal 71 when the printed circuit board 3 contracts as described later. It has become a place of escape. Moreover, elastic tongue pieces 85 for fixing to the printed circuit board 3 are integrally provided to protrude from the lower surfaces of both ends of the connection terminal 81 . Here, the first
Although FIG. 0 shows the connection state between the connection terminal 82 and the lamp holder 7, the connection between the other connection terminal 81 and the terminal plates 27 to 30 of the composite component 6 is also the same. The contact surface between the blade receiving spring 84 of the connecting terminal 82 and the terminal 71 of the lamp holder 7 and the contact surface between the blade receiving spring 84 of the connecting terminal 81 and the terminal plates 27 to 30 of the composite component 6 are perpendicular to each other. There is. Therefore, when the printed circuit board 3 contracts or expands in the direction connecting the connecting terminals 81 and 82 from the point where the printed circuit board 3 is fixed to the base 1 as described later, the The direction is connecting terminal 82
The direction is perpendicular to the contact surface between the blade receiving spring 84 and the terminal 71 of the lamp holder 7. This means that even if the printed circuit board 3 contracts or expands, the blade receiving spring 84 of the other connecting terminal 81 and the terminal plate 27 of the composite component 6
Since the groove 83a of the connecting terminal 81 is in the same direction as the contact surface of the terminal plates 27 to 30 of the composite component 6,
As a result, no force is applied to the blade receiving spring 84 of the connection terminal 81, and therefore no force is applied to the soldered portion of the printed circuit board 3. Incidentally, since the lamp holder 7 is fixed to the printed circuit board 3 by the lamp holder support 9, there is no dimensional change. Incidentally, the connection terminals 81 and 82 may be simply composed of terminal plates.

FIG. 11 shows a perspective view of the lamp holder support 9, in which the lamp holder 7 is inserted into the interior of the lamp holder support 9, and a printed circuit board 3 is provided on the outer surface.
A collar 86 is provided to support the. Furthermore, two claws 87 are integrally provided at the lower part of the lamp holder support 9 for fixing the lamp holder support 9 to the base 1, and a rib 88 is inserted into a hole in the base 1 to position the lamp holder support 9. There are two. As shown in FIG. 12, which is shown upside down from the actual installation state, the end 9a of the lamp holder support 9 opposite to the claw 87 is inserted into the hole 3b of the printed circuit board 3, and the lamp holder is supported. The body 9 is positioned on the printed circuit board 3, and the collar 86 is brought into contact with one surface of the printed circuit board 3, so that the lamp holder support 9 is supported by the printed circuit board 3. Note that the size of the hole 3b of the printed circuit board 3 through which the lamp holder support 9 is inserted is slightly larger than the outer circumference of the lamp holder support 9. A portion of the tongue piece 80 of the lamp holder 7 shown in FIG. 6 having a dimension S ₂ is inserted into the lamp holder support 9 .

FIG. 13 shows a perspective view of the wiring component support 8,
This wiring component support body 8 is formed into a substantially L shape, and has two ribs 89 protruding from one side. Also,
A printed circuit board 3 is placed around one side of the wiring component support 8.
A flange 90 is integrally formed to support it.
Furthermore, convex ribs 91 having guide holes 91a for inserting a jig for positioning the wiring component support 8 during assembly are provided at both ends of the wiring component support 8, and on the other side, for fixing to the base 1. Two claws 92 having elasticity are integrally provided. As shown in FIG. 8, notches 93 are formed in the printed circuit board 3 in correspondence with the ribs 89, communicating with the holes 3a, and the ribs 89 of the wiring component support 8 are formed in the notches 93, respectively. By fitting, the wiring component support 8 is prevented from steadying, and stress is not applied to the soldered portion. This wiring component support 8
A portion of dimension S ₁ of the composite part 6 shown in FIG. 3 is inserted therein.

[Effects of the Invention] As described above, the present invention includes a lamp, a lamp holder that supports the lamp and applies lighting voltage to the lamp, a printed circuit board mounted with a lighting circuit that lights the lamp, a power switch, A lighting device having a wiring component such as a composite component that integrates a socket for a miniature bulb and a power supply terminal portion, in which a first connection terminal to which a terminal of a lamp holder is connected to an end of a printed circuit board is mounted, The printed circuit board is fixed to the base by a fixing member on the side of the first connecting terminal, and a second connecting terminal is connected to a terminal of a wiring component such as a composite component at a position on the printed circuit board apart from the first connecting terminal. The contact surface between the terminal of the wiring component such as a composite component and the second connection terminal is parallel to the line connecting both connection terminals, so if the printed circuit board contracts or expands, The connection terminal part 1 is fixed to the base by a fixing member, so the contraction and expansion of the printed circuit board is prevented by the second part.
It occurs on the part of the printed circuit board on the connection terminal side of the
In addition, by making the contact surface of the terminal parallel to the line connecting both connection terminals, force is not applied directly to the second connection terminal, and stress is not applied to the solder part of the terminal. Therefore, positional deviation due to contraction and expansion of the printed circuit board,
This has the effect of providing a lighting fixture with a component arrangement that is less susceptible to cracking.

Further, in claim 2, a hollow lamp holder support for guiding the lamp holder when it is attached and a hollow wiring component support for guiding the wiring components such as composite parts when attached to the printed circuit board. Place the printed circuit board in the hole and use the lamp holder support to position the printed circuit board front to back and left to right.
By resting the left and right sides of the printed circuit board using the wiring component support, no stress is applied to the soldered portions of the printed circuit board.

According to the third aspect of the present invention, the lamp holder and the wiring parts such as composite parts are arranged in a T-shape, so that the corners of the mounting holes of the printed circuit board are spaced apart from each other, and cracks are less likely to occur.

Furthermore, in claim 4, by providing the terminal of the wiring component such as the composite component on the opposite side of the lamp holder, a space can be secured between the lamp holder and the composite component, making it easy to arrange the electronic component.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is an exploded perspective view of the entire lighting fixture, Fig. 3 is a perspective view of the composite part of the above, and Fig. 4 is a perspective view of the composite part of the above. , FIG. 5 is a perspective view of the same composite part, FIG. 6 is a perspective view of the lamp holder, FIG. 7 is an exploded perspective view of the lamp holder, and FIG. 8 is a plan view of the printed circuit board, FIG. 9 is a perspective view of the connection terminal same as above, FIG.
Fig. 1 is a perspective view of the lamp holder support same as above, Fig. 12 is a sectional view showing the positioning of the lamp holder support same as above and the printed circuit board, Fig. 13 is a perspective view of the wiring component support same as above, Fig. 14 The figure is an exploded perspective view of a conventional example. 1 is the base, 3 is the printed circuit board, 5 is the lamp,
6 is a composite component, 7 is a lamp holder, 8 is a wiring component support, 9 is a lamp holder support, 71 is a terminal, 81 is a second connection terminal, and 82 is a first connection terminal.

Claims (1)

[Scope of Claims] 1. A lamp, a lamp holder that supports the lamp and applies lighting voltage to the lamp, a printed circuit board on which a lighting circuit for lighting the lamp is mounted, a power switch, a miniature bulb socket, and a power source. A lighting device having a wiring component such as a composite component with an integrated terminal portion, wherein a first connection terminal to which a terminal of a lamp holder is connected is mounted on an end of a printed circuit board, and the first connection terminal The printed circuit board is fixed to the base by a fixing member on the side, and a second connection terminal to which a terminal of a wiring component such as a composite component is connected is mounted on the printed circuit board at a position apart from the first connection terminal. A component arrangement structure for a lighting fixture in which the contact surface between a terminal of a wiring component and a second connection terminal is parallel to a line connecting both connection terminals. 2. A hollow lamp holder support body that guides the installation of the lamp holder and a hollow wiring component support body that guides the installation of wiring components such as composite components are placed in the hole of the printed circuit board, and the lamp holder 2. The component arrangement structure for a lighting fixture according to claim 1, wherein the printed circuit board is positioned longitudinally and horizontally by the support, and the printed circuit board is rested horizontally by the wiring component support. 3. The component arrangement structure of the lighting fixture according to item 1, in which the lamp holder and wiring components such as composite components are arranged in a T-shape. 4. The component arrangement structure of the lighting fixture according to item 1, wherein terminals of wiring components such as composite components are provided on the opposite side of the lamp holder.