JP2012123943A - Connector, light source module, and lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector which excels in on-board mountability and workability and can restrict its height from the board when it is fitted to the board.SOLUTION: A connector 21 is mounted, for a plug to be connected thereto, on a printed circuit board 31 having a component side 311 on which conductor patterns are disposed, and has a top face part 211, a bottom face part 212, a front face part 213 and a rear face part 214. The connector 21 includes a land contact part 22b provided on an upper side of the rear face part 214 and physically and electrically connecting to the printed circuit board 31 and a plug connection part 22a provided on a lower side of the front face part 213 and used to physically and electrically connect a plug. The connector 21 is inserted into a connector insertion hole 34 which the printed circuit board 31 has, and the land contact part 22b is physically and electrically connected to conductor patterns on the component side 311, while the plug connection part 22a is located on a non-component side 312, or one of the faces of the printed circuit board 31 opposite to the component side 311 thereof.

Description

  The present invention relates to a connector attached to, for example, a circuit board.

  As a method of reducing the height of the connector, there is a configuration in which the connector is fitted to the notch or notch portion of the circuit board so that the center of the connector is at the same level as the circuit board, and the height of the connector is lowered ( For example, see Patent Document 1).

Utility model registration No. 3090457

  In order to reduce the height of the connector, it is necessary for the conventional connector to have a notch at the end of the board and to attach the connector so that the board is sandwiched. .

  Moreover, since the conventional connector is fitted in the notch of the board, the insertion / removal to / from the connector is strong in one direction (insertion direction), but weak in the other direction (extraction direction). For this reason, it is necessary to fix a connector to a board | substrate with a screw etc., and a man-hour increases and there exists a subject that it is inferior to workability | operativity.

  The present invention has been made in order to solve the above-described problems, and can be attached to a substrate or the like with a reduced height, and has excellent attachment and workability when attached to the substrate or the like. The purpose is to provide.

The connector according to the present invention is a connector for connecting a plug, which is attached to a circuit board having a mounting surface for mounting a conductor pattern, and includes a top surface portion, a bottom surface portion, and a side surface portion.
A board connecting portion that is provided on the side of the upper surface portion of the side surface portion and is physically and electrically connected to the circuit board;
A plug connection portion provided on the bottom surface portion side of the side surface portion and physically and electrically connecting the plug;
The connector is
The circuit board is inserted into a connector insertion hole provided in the circuit board, and the board connection portion is physically and electrically connected to the conductor pattern provided in the mounting surface, and the plug connection portion includes the circuit board. It is arranged on a surface opposite to the mounting surface.

  According to the present invention, it is possible to reduce the height of the connector attached to the circuit board and to improve the attachment and workability when attaching the connector to the circuit board.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram of the LED lighting fixture 100 using the connector 21 which concerns on Embodiment 1, (a) is a front view, (b) is a side view, (c) is sectional side view (AA sectional drawing). It is. It is a figure which shows the state which removed the light source cover 6 from the LED lighting fixture 100 of FIG. 1, (a) is a front view, (b) is side sectional drawing (AA sectional drawing), (c) is sectional drawing ( It is a BB sectional view. It is a figure which shows the light source cover 6 (reflective member) of the LED lighting fixture 100 of FIG. 1, (a) is a front view, (b) is a side view of a transversal direction, (c) is a side view of a longitudinal direction. . It is a figure which shows the connector 21 (surface mount type electrical connector) which concerns on Embodiment 1, (a) is a front view, (b) is a side view (front part side), (c) is a side view (rear surface part side) ), (D) is a side view (side portion 215 (left side portion) side). It is an exploded view which shows the mounting method of the connector 21 which concerns on Embodiment 1, (a) is an exploded perspective view which shows a mounting method, (b) is a figure which shows the inside of the connector 21 in the state of (a). 2 is a diagram showing a state where the connector 21 according to Embodiment 1 is attached to a printed circuit board 31. FIG. FIG. 5 is a cross-sectional view of the connector 21 according to the first embodiment attached to the printed circuit board 31, wherein (a) is a cross-sectional view taken along the line CC in FIG. 4 (a), and (b) is a DD line in FIG. It is sectional drawing. It is a figure which shows the state which inserts the plug 50 in the connector 21 which concerns on Embodiment 1, (a) is a figure which inserts the plug 50 in the connector 21 of FIG.7 (b), (b) is FIG.7 (b). 6 is a perspective view of a state in which the plug 50 is inserted into the connector 21 as viewed from the non-mounting surface 312 side of the printed board 31. FIG. It is a figure which shows the lighting fixture using the printed circuit board 31 which attached the connector 51 of the type by which a plug insertion port is arrange | positioned at the mounting surface 311. FIG. It is a figure which shows the connector 201 which concerns on Embodiment 2, (a) is a front view, (b) is a side view (front side part side), (c) is a side view (rear side part side), (d) is a side view. It is a figure (side part 215 (left side part) side). It is an exploded view which shows the mounting system of the connector 201 which concerns on Embodiment 2, (a) is an exploded perspective view which shows a mounting system, (b) is a figure which shows the inside of the connector 201 in the state of (a). 6 is a diagram illustrating a state in which a connector 201 according to Embodiment 2 is attached to a printed circuit board 31. FIG. FIG. 11 is a cross-sectional view of a state in which the connector 201 according to Embodiment 2 is attached to the printed circuit board 31; (a) is a cross-sectional view taken along the line C-C in FIG. 10 (a); It is sectional drawing. It is a figure which shows the connector 202 which concerns on Embodiment 3, (a) is a front view, (b) is a side view (front part side), (c) is a side view (rear surface part side), (d) is a side view. It is a figure (side part 215 (left side part) side). It is an exploded view which shows the mounting system of the connector 202 which concerns on Embodiment 3, (a) is an exploded perspective view which shows a mounting system, (b) is a figure which shows the inside of the connector 202 in the state of (a). 6 is a diagram showing a state where a connector 202 according to Embodiment 3 is attached to a printed circuit board 31. FIG. FIGS. 14A and 14B are cross-sectional views of the connector 202 according to the third embodiment attached to the printed circuit board 31, wherein FIG. 14A is a cross-sectional view taken along the line CC in FIG. 14A, and FIG. It is sectional drawing. It is a figure which shows the state which inserts and removes the plug 50 with respect to the connector 203 which concerns on Embodiment 4. FIG. 6A and 6B are diagrams illustrating a connector 204 according to a fifth embodiment, where FIG. 5A is a diagram illustrating a state in which the connector 204 is attached to the printed circuit board 31, and FIG. .

Embodiment 1 FIG.
FIG. 1 is an overall configuration diagram of an LED lighting apparatus 100 using a connector 21 according to the present embodiment, where (a) is a front view, (b) is a side view, and (c) is a side sectional view (A-). (A sectional view). 2A and 2B are diagrams showing a state in which the light source cover 6 is removed from the LED lighting apparatus 100 of FIG. 1, wherein FIG. 2A is a front view, FIG. 2B is a side sectional view (AA sectional view), and FIG. Is a sectional view (BB sectional view). FIG. 3 is a view showing the light source cover 6 (reflecting member) of the LED lighting apparatus 100 of FIG. 1, (a) is a front view, (b) is a side view in the short direction, and (c) is a longitudinal direction. It is a side view. The whole structure of the LED lighting fixture 100 using the connector 21 which concerns on this Embodiment is demonstrated using FIGS. 1-3.

  The LED lighting apparatus 100 includes an apparatus main body bottom 11 in which a DC power source 7 (power supply device) is accommodated, and an apparatus main body cover 5 that is attached to the apparatus main body bottom 11 so as to cover the opening of the apparatus main body bottom 11. Prepare. The LED lighting device 100 is screwed to the device body lid 5 so as to cover the printed circuit board 31 (31a, 31b) (circuit board) attached to the upper surface of the device body cover 5 and the printed circuit board 31 (31a, 31b). Light source cover 6 (reflecting member). The upper surface (surface on which the printed circuit board 31 is attached) of the instrument body lid 5 is referred to as a substrate mounting base 40.

  The DC power supply 7 receives a commercial power supply (AC power supply), converts it into a DC voltage (DC current), and supplies power to the connected printed circuit boards 31 (31a, 31b). The DC power source 7 is accommodated in the instrument main body bottom 11. The DC power source 7 includes a plug 8 with wiring that physically and electrically connects the power source side connection portion 7a included in the DC power source 7 and the connector 21 (21a) mounted on the printed circuit board 31 (31a, 31b). Power is supplied to the printed circuit board 31a.

  The printed circuit board 31 (31a, 31b) includes a mounting surface 311 (311a, 311b) and a non-mounting surface 312 (312a, 312b) that is a surface opposite to the mounting surface 311 (311a, 311b). On the mounting surface 311 (311a, 311b), LEDs 3 (3a to 3l) (surface mounted light sources) are mounted. On the mounting surface 311 (311a, 311b), a conductor pattern 32 (32a, 32b) (circuit pattern) is mounted to supply voltage to the LEDs 3 (3a-3l) and the like. Further, circuit elements (not shown) other than the LEDs 3 (3a to 3l) are also mounted on the mounting surface 311 (311a, 311b). The printed circuit board 31 on which the LEDs 3 are mounted on the mounting surface 311 is also referred to as a light source module.

  Connectors 21 (21a to 21d) are attached to the printed circuit board 31 (31a, 31b). The connectors 21 (21 a to 21 d) are attached to the surface (the mounting surface 311 and the non-mounting surface 312) of the printed circuit board 31, are physically and electrically connected to the conductor pattern 32, and are plugged with wires 8, 9, 10. Is a surface-mounting type electrical connector that is physically and electrically connected to each other.

  As shown in FIG. 2C, the connector 21 is attached through the printed board 31 and the board mounting base 40, and is physically connected to the conductor pattern 32 of the printed board 31 on the mounting surface 311 side of the printed board 31. A plug connection portion that is connected to the plug on the non-mounting surface 312 side of the printed circuit board 31 is disposed. The connector 21 is physically and electrically connected to a plug included in the plugs 8, 9, and 10 with wiring at the plug connection portion. A detailed structure of the connector 21, a method for attaching the printed circuit board 31, and a method for physically and electrically connecting the printed circuit board 31 and the plug will be described later.

  A connector 21a is disposed near the end of the printed circuit board 31a (the end of the LED lighting device 100), and a connector 21b is disposed near the end of the printed circuit board 31a adjacent to the printed circuit board 31b. . Further, a connector 21d is disposed in the vicinity of the end of the printed board 31b (the end of the LED lighting device 100), and a connector 21c is disposed in the vicinity of the end adjacent to the printed board 31a.

  As described above, the connector 21a is connected to the DC power source 7 by the plug 8 with wiring. The connector 21b and the connector 21c are connected by the plug 9 with wiring shown to Fig.2 (a). Thereby, the printed circuit board 31a and the printed circuit board 31b are electrically connected. Further, the plug with wiring 10 shown in FIG. 2A is connected to the connector 21d. As described above, the electrical connection between the DC power supply 7 and the printed boards 31a and 31b is realized by the connectors 21a to 21d and the plugs with wires 8, 9, and 10.

  As shown in FIGS. 1 and 3, the light source cover 6 is a substantially trapezoidal cover whose cross section in the short direction has a height L1. The light source cover 6 has a relatively low height L1, has a flat design, and realizes a thin LED lighting apparatus 100. Here, if the height of the connector 21 protruding from the mounting surface 311 of the printed board 31 in the light irradiation direction P0 is high, the design of the light source cover 6 is restricted. By suppressing the height of the connector 21 protruding from the mounting surface 311 of the printed circuit board 31 and making the printed circuit board 31 thin, the design freedom of the light source cover 6 is improved.

  4A and 4B are diagrams showing a connector 21 (surface-mounting type electrical connector) according to the present embodiment, where FIG. 4A is a front view, FIG. 4B is a side view (front side), and FIG. 4C is a side view. (Rear surface part side), (d) is a side view (side surface part 215 (left side surface part) side). FIG. 5 is an exploded view showing a mounting method of the connector 21 according to the present embodiment, where (a) is an exploded perspective view showing the mounting method, and (b) shows the inside of the connector 21 in the state of (a). FIG. FIG. 6 is a view of the state in which the connector 21 according to the present embodiment is attached to the printed circuit board 31 as viewed from the mounting surface 311 side. 7 is a cross-sectional view of the connector 21 according to the present embodiment attached to the printed circuit board 31. FIG. 7A is a cross-sectional view taken along the line CC in FIG. 4A, and FIG. It is DD sectional drawing of. 8A and 8B are diagrams showing a state in which the plug is inserted into the connector 21 according to the present embodiment. FIG. 8A is a diagram in which the plug is inserted into the connector 21 in the state of FIG. 7B, and FIG. It is the perspective view which looked at the state which inserts a plug in the connector 21 of the state of b) from the non-mounting surface 312 side of the printed circuit board 31. FIG.

  The detailed structure of the connector 21, the structure of the assembly composed of the connector 21 and the printed board 31, and the attachment method for attaching the connector 21 to the printed board 31 will be described with reference to FIGS. 4 to 8.

  As shown in FIGS. 4 and 5, the connector 21 has a box shape including an upper surface portion 211, a bottom surface portion 212, and four side surfaces between the upper surface portion 211 and the bottom surface portion 212. The connector 21 includes a front surface portion 213, a rear surface portion 214, a side surface portion 215 (left side surface portion), and a side surface portion 216 (right side surface portion) as four side surfaces. The front surface portion 213 and the rear surface portion 214, and the side surface portion 215 and the side surface portion 216 are surfaces facing each other.

  The printed circuit board 31 is provided with a connector insertion hole 34 for inserting the connector 21. The connector insertion hole 34 has substantially the same shape as the shape of the upper surface portion 211 and the bottom surface portion 212 of the connector 21. That is, when the connector 21 is inserted into the connector insertion hole 34, there is almost no gap between the four side surfaces of the connector 21 and the hole peripheral edge 341 that forms the connector insertion hole 34. Alternatively, the shape of the connector insertion hole 34 may be slightly larger than the shapes of the upper surface portion 211 and the bottom surface portion 212 of the connector. Thus, when the connector 21 is inserted into the connector insertion hole 34, a predetermined gap is formed between the four side surfaces of the connector 21 and the hole peripheral edge 341, and workability when inserting the connector 21 into the connector insertion hole 34 is improved. improves.

  The mounting surface 311 of the printed circuit board 31 includes a conductor pattern 32 (circuit pattern) for configuring a circuit, lands 33 (electrodes) connected (continuous) to the connector 21 (surface mount type electrical connector), and connector insertion holes. 34 is provided. The board mounting base 40 is provided with a connector penetration hole 41.

  In the vicinity of the hole periphery 341 of the printed circuit board 31, a land 33 that is an electrode continuous to the conductor pattern 32 is provided. The land 33 is disposed at a position corresponding to a land contact portion 22b of the connector 21 described later.

  In the lighting fixture, the LED board or the like that is the printed circuit board 31 is attached to, for example, a metal fixture main body or the like, and is electrically connected to the metal fixture main body or the like. This considers grounding of the LED substrate or the like. As shown in FIGS. 5 to 8, since the printed circuit board 31 is mounted and mounted on the board mounting base 40 of the instrument body lid 5, a hole through which the connector 21 penetrates the board mounting base 40 (for connector penetration) A hole 41) is formed.

  The connector penetration hole 41 is preferably slightly larger in shape than the connector insertion hole 34 of the printed circuit board 31 in consideration of workability and attachment. The connector penetration hole 41 and the connector insertion hole 34 may have substantially the same shape, but the connector insertion hole 34 and the connector penetration hole 41 do not match due to an error in attaching the printed circuit board 31 to the board mounting base 40. There is. In this case, the connector 21 may not be able to penetrate the connector penetration hole 41 after passing through the connector insertion hole 34. Accordingly, the connector penetration hole 41 is preferably formed to be slightly larger than the connector insertion hole 34.

  For simplicity of explanation, the upper surface portion 211 side of the connector 21 is set as the upper side, and the bottom surface portion 212 side is set as the lower side. A plug insertion port 24 for inserting a plug 50 (see FIG. 8) connected to the connector 21 is formed below the front surface portion 213 of the connector 21 (on the bottom surface portion 212 side).

  A conductor 22 for electrical connection is accommodated in the connector 21. Two conductors 22 for plus and minus are accommodated. The two conductors 22 have substantially the same shape and the same structure.

  One end of the conductor 22 is exposed from the upper side of the rear surface portion 214 of the connector 21 and is electrically connected to the land 33 of the printed circuit board 31. That is, the end portion of the conductor 22 exposed from the upper side of the rear surface portion 214 is the land contact portion 22b (substrate connection portion).

  The other end of the conductor 22 is exposed to the inside of the plug insertion opening 24 formed on the lower side of the front face 213 and is electrically connected to the plug 50 inserted into the plug insertion opening 24. That is, the end portion of the conductor 22 exposed inside the plug insertion port 24 is the plug connection portion 22a. The plug insertion opening 24 and the end portion of the conductor 22 exposed inside may be collectively referred to as a plug connection portion 22a.

  As shown in FIG. 7, the conductor 22 has a substantially S-shaped cross section from the land contact portion 22b as one end portion to the plug connection portion 22a as the other end portion.

  In addition, the connector 21 includes a connector support 23 that is a protruding portion protruding from the front surface portion 213 on the upper side (upper surface portion 211 side) of the front surface portion 213. The connector support 23 protrudes in the opposite direction from the land contact portion 22b from both upper ends of the front surface portion 213.

  The connector support 23 (protrusion) is a protrusion at which the lower surface (support lower surface 231) of the protruding portion comes into contact with the mounting surface 311 near the hole periphery 341. The connector support 23 (23a, 23b) is preferably formed at a position facing the position of the land contact portion 22b (board connection portion) provided on the rear surface portion 214 (side surface portion). That is, as shown in FIG. 4D, since the land contact portion 22 b is provided on the upper side of the rear surface portion 214, the connector support 23 is disposed on the upper side of the front surface portion 213 that is a surface facing the rear surface portion 214. Provided.

  When the connector 21 is inserted into the connector insertion hole 34 and attached to the printed board 31, the connector support 23 abuts against the mounting surface 311 in the vicinity of the hole peripheral edge 341 of the printed board 31 so that the connector 21 does not fall. (See FIG. 6). Therefore, the connector support body 23 may be provided in the upper part of the side part 215 and the upper part of the side part 216, for example.

Below, the attachment method to the printed circuit board 31 of the connector 21 is demonstrated.
(1) The connector 21 is inserted into the connector insertion hole 34 of the printed board 31 from the bottom surface portion 212 side (see FIG. 5).
(2) A support lower surface 231 (see FIG. 7A), which is the lower surface of the connector support 23, is brought into contact with the mounting surface 311 in the vicinity of the hole periphery 341 (see FIG. 7B).
(3) The plug insertion port 24 (plug connection portion 22a) portion provided on the lower side of the front surface portion 213 of the connector 21 passes through the connector insertion hole 34 of the printed circuit board 31 and is opposite to the mounting surface 311 of the printed circuit board 31. It is exposed and arranged on the side surface (non-mounting surface 312) (see FIG. 7B).
(4) The land contact portion 22b, which is the conductor 22 exposed from the upper side of the rear surface portion 214 of the connector 21, and the land 33 of the mounting surface 311 of the printed circuit board 31 are reflow soldered (see FIG. 7B).
(5) The printed circuit board 31 on which the surface mounting components including the connector 21 are mounted is attached to the board mounting base 40. At this time, the non-mounting surface 312 of the printed board 31 and the board mounting base 40 are attached so as to abut. The plug insertion port 24 (plug connection portion 22a) provided on the lower side of the front surface portion 213 of the connector 21 passes through the connector penetration hole 41 and appears on the lower surface side of the board mounting base 40 (see FIGS. 5 and 7). ).

  As shown in FIG. 6, when the connector 21 is attached to the printed board 31, the height L <b> 2 of the connector 21 portion that appears on the mounting surface 311 of the printed board 31 can be suppressed. This is because the plug insertion port 24 into which the plug 50 is inserted can be disposed on the non-mounting surface 312, so that the height exposed on the mounting surface 311 needs only the height of the connector support 23. Therefore, if the height of the connector support 23 is lowered, the height L2 of the connector 21 portion that appears on the mounting surface 311 can be lowered accordingly. As a result, the height L2 of the connector 21 protruding from the mounting surface 311 of the printed circuit board 31 can be kept low, and the height L1 of the light source cover 6 can be reduced by making the printed circuit board 31 thinner, so that the LED lighting apparatus can be reduced. 100 design freedom is improved.

  The CC sectional view of FIG. 7A shows a state in which the inside of the connector 21 is filled with resin or the like. However, it is not always necessary to fix the conductor 22 by filling the interior with resin or the like. A fixing part for fixing the conductor 22 may be provided inside the connector 21.

  FIG. 8A shows an assembly composed of the printed circuit board 31 and the connector 21 with the connector 21 attached to the printed circuit board 31, and shows a state where the plug 50 is inserted into and removed from the connector 21 of the assembly. . FIG. 8B shows the connector 21 viewed from the non-mounting surface 312 side of the printed circuit board 31 and shows a state where the plug 50 is inserted. In FIG. 8B, the description of the board mounting base 40 is omitted. Actually, the plug 50 is inserted into the plug insertion opening 24 that appears on the lower surface side (back surface) of the board mounting base 40, and electrical connection is realized.

  The plug insertion port 24 may include a plug housing part (an internal space into which the plug 50 is inserted). The size of the plug storage portion (the internal space into which the plug 50 is inserted) of the plug insertion port 24 is slightly larger than the shape of the plug 50, and when the plug 50 is inserted, a predetermined gap is generated vertically and horizontally. It is preferable. It is preferable to design the shape of the plug insertion port 24 so that the plug 50 can be easily inserted and the connection portion of the plug 50 to the conductor 22 and the plug connection portion 22a of the conductor 22 can be easily connected. .

  As shown in FIG. 8, when the plug 50 is inserted into the plug insertion port 24 of the connector 21 attached to the printed circuit board 31, the lower side of the connector 21 is pushed in the P direction. Then, a force is applied to the upper side of the connector 21 in the P1 direction. As a result, a force is applied to the contact portion by soldering between the land contact portion 22b and the land 33 in a direction in which the contact is peeled off. At this time, if the connector support 23 is in a position facing the land contact portion 22b, the support lower surface 231 of the connector support 23 abuts the mounting surface 311 and the upper portion of the connector 21 moves in the P1 direction. Suppress. Thereby, it can prevent that the contact part by soldering of the land contact part 22b and the land 33 is damaged.

  Further, when the plug 50 is pulled out, a force in the Q direction is applied to the lower portion of the connector 21. Then, a force in the Q1 direction is applied to the upper portion of the connector 21, and a force is applied to the contact portion by the soldering between the land contact portion 22b and the land 33 in a direction in which the land contact portion 22b is pressed against the land 33. At this time, there is little fear that the land 33 and the land contact portion 22b are peeled off. However, there is still a risk of damage in soldering. In order to avoid such a state, a projection similar to the connector support 23 may be formed above the rear surface 214.

  FIG. 9 is a view showing a lighting fixture using a printed circuit board 31 to which a connector 51 of a type in which a plug insertion slot is arranged on the mounting surface 311 is attached. In the case of the connector 51 (51a to 51d) of the type in which the plug insertion port 24 is disposed on the mounting surface 311 of the printed circuit board 31, the lead wire portions are connected by long wiring plugs 58, 59, 57. The lead wire of the plug with wiring 58 has an appropriate margin in length. Further, the lead wires of the plugs with wiring 58, 59, and 57 are present on the mounting surface 311. For this reason, the lead wires sag on the printed circuit boards 31a and 31b after being connected to the connector 51 (electrical connector), so that the lead wires may be caught when the light source cover 6 is attached. Further, in order to prevent the lead wire from being caught, the light source cover 6 is enlarged to avoid the lead wire portion, and there is a possibility that it is difficult to reduce the thickness of the lighting fixture.

  According to the connector 21 according to the present embodiment described with reference to FIGS. 1 to 8, the mounting surface 311 (LED mounting surface) has a plug insertion port 24 on the opposite surface (back surface) (non-mounting surface 312) side. Since the (connector mounting portion) is provided, it is not necessary to provide a connector mounting (plug mounting) space on the LED mounting surface (mounting surface 311) side, and the periphery of the LED mounting portion can be reduced in thickness.

  Further, when a connector is arranged on the non-mounting surface 312 (back surface) of the printed circuit board 31 using the connector 51 shown in FIG. 9, the lead wires of the plugs 58, 59, 57 with wiring do not come to the mounting surface 311. There is a fear. First, the place where the printed board 31 may be a single-sided copper-clad board is a double-sided copper-clad board. Also, by performing through plating on both sides of the substrate, the cost of the substrate is significantly increased compared to a single-sided copper-clad substrate. Furthermore, also in the component mounting to a board | substrate, a single-sided reflow process turns into a double-sided reflow process, and also increases a component mounting process cost.

  According to the connector 21 according to the present embodiment described with reference to FIGS. 1 to 8, the LED 3 and the connector 21 can be soldered in the single-sided reflow process, so that the component mounting process can be reduced. This can reduce the component mounting cost.

  A connector 21 (surface-mounting type electrical connector) according to the present embodiment is mounted on the same surface as a mounting surface 311 of a surface-mounted component mounted on a printed circuit board 31 having a wiring pattern (conductor pattern 32) to form a pair. The plug side (plug connection portion 22a, plug insertion port 24) is the back surface side (non-mounting surface 312 side) of the mounting surface 311 of the surface mounting component. Further, the protruding portion (connector support 23) is formed so as to be asymmetric with respect to the mounting direction of the connector 21. Thereby, the connector 21 can be easily attached to the printed circuit board 31 (circuit board), and the height L2 of the connector 21 on the mounting surface 311 can be reduced.

Embodiment 2. FIG.
In the present embodiment, a connector 201 having a configuration (shape) different from that of the connector 21 described in the first embodiment will be described.

  10A and 10B are diagrams showing a connector 201 (surface mount type electrical connector) according to the present embodiment, where FIG. 10A is a front view, FIG. 10B is a side view (front side), and FIG. 10C is a side view. (Rear surface part side), (d) is a side view (side surface part 215 (left side surface part) side). FIG. 11 is an exploded view showing the mounting method of the connector 201 according to the present embodiment, where (a) is an exploded perspective view showing the mounting method, and (b) shows the inside of the connector 201 in the state of (a). FIG. FIG. 12 is a diagram illustrating a state where the connector 201 according to the present embodiment is attached to the printed circuit board 31. 13 is a cross-sectional view of the connector 201 according to the present embodiment attached to the printed circuit board 31. FIG. 13A is a cross-sectional view taken along the line CC in FIG. 10A, and FIG. It is DD sectional drawing of.

  10 to 13 correspond to FIGS. 4 to 7 of the first embodiment. 10 to 13 of the present embodiment, the same components as those of FIGS. 4 to 7 of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The connector 201 according to the present embodiment includes a positioning protrusion 25 for positioning on the upper side of the side surface portion 215 in addition to the configuration described in the first embodiment. Further, the connector insertion hole 34 of the printed circuit board 31 is provided with a notch 35 at a position corresponding to the positioning protrusion 25 of the connector 201.

  The positioning protrusion 25 determines the direction (position) when the connector 201 is mounted on the printed circuit board 31 and prevents mounting in the reverse direction.

  Thus, by providing the positioning protrusion 25 on the connector 201, when attaching the surface mount type electrical connector (connector 201) to the printed circuit board 31, it is possible to prevent the surface mount type electrical connector from being attached in the wrong direction. it can.

  As shown in FIG. 11, a notch portion (main body notch portion 42) through which the positioning protrusion 25 can penetrate may be provided on the periphery of the board mounting base 40 where the connector penetration hole 41 is formed. However, as shown in FIGS. 10B and 10C, since the positioning projection 25 is inclined downwardly in a tapered shape, when the connector penetration hole 41 is sufficiently larger than the connector insertion hole 34, The positioning projection 25 can pass through the connector penetration hole 41 even if it is not provided with a notch. Alternatively, it may be formed so that the lower part of the positioning projection 25 is tapered and formed so as not to reach the board mounting base 40 when attached to the printed circuit board 31 and the board mounting base 40.

  In the connector 201 according to the present embodiment, the positioning projection 25 is formed on the upper side of the side surface 215, but may be formed on any of the side surface 216, the front surface 213, and the rear surface 214. Since the land contact portion 22b and the connector support 23 are formed on the front surface portion 213 and the rear surface portion 214, it is preferably formed on any one of the side surface portions 215 and 216.

Embodiment 3 FIG.
In the present embodiment, a connector 202 having a configuration (shape) different from that of the connector 21 described in the first embodiment will be described.

  14A and 14B are diagrams showing a connector 202 (surface-mounting type electrical connector) according to the present embodiment, where FIG. 14A is a front view, FIG. 14B is a side view (front side), and FIG. 14C is a side view. (Rear surface part side), (d) is a side view (side surface part 215 (left side surface part) side). FIG. 15 is an exploded view showing a mounting method of the connector 202 according to the present embodiment, where (a) is an exploded perspective view showing the mounting method, and (b) shows the inside of the connector 202 in the state of (a). FIG. FIG. 16 is a diagram illustrating a state in which the connector 202 according to the present embodiment is attached to the printed circuit board 31. 17 is a cross-sectional view of a state in which the connector 202 according to the present embodiment is attached to the printed circuit board 31. FIG. 17A is a cross-sectional view taken along the line CC in FIG. 14A, and FIG. It is DD sectional drawing of.

  14 to 17 correspond to FIGS. 4 to 7 of the first embodiment. 14 to 17 of the present embodiment, the same components as those in FIGS. 4 to 7 of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 14 to 16, the connector 202 (surface mount type electrical connector) is provided with connector supports 26 a to 26 d at positions corresponding to the front, back, left and right of the connector 202. In other words, the connector supports 26 a to 26 d are formed at the four corners of the upper surface portion 211 of the connector 21.

  According to the connector 202 according to the present embodiment, the influence of the pressing force applied to the connector 202 can be reduced by providing the connector supports 26a to 26d at four locations near the corners of the upper surface portion 211.

  As shown in FIG. 17B, the influence of the force of P2 applied to the connector 202 when the plug 50 is inserted (inserted) into the plug insertion port 24 is limited by the connector supports 26a and 26b. be able to.

  Further, as shown in FIG. 17B, the influence of the force of Q2 applied to the connector 202 when the plug 50 is pulled out (removed) from the plug insertion port 24 is limited by the connector supports 26c and 26d. can do.

  That is, when the plug 50 is inserted into the plug insertion port 24 or when the plug 50 is pulled out from the plug insertion port 24, the connector supports 26a to 26d are solder joints (land contact portions) between the conductor 22 and the land 33. 22b and the land 33) can be received, and cracking or tearing of the solder joint can be suppressed.

  Further, the connector supports 26a to 26d are formed over two surfaces at the corners of the upper surface portion 211, respectively. That is, the connector support 26a is formed over the front surface 213 and the side surface 216, the connector support 26b is formed over the front surface 213 and the side surface 215, the connector support 26c is formed over the rear surface 214 and the side surface 215, The connector support 26d is formed across the rear surface portion 214 and the side surface portion 216. Therefore, not only the force in the plug insertion / removal direction applied to the connector 202 (force in the PQ direction) but also the force perpendicular to the plug insertion / removal direction (force in the ST direction) (see FIG. 14A). Even against this, there is an effect of suppressing the influence of force.

  The connector 202 according to the present embodiment is characterized in that connector supports 26a to 26d are formed on the front, rear, left and right of the connector 202 in a mounting direction. Thereby, not only the force in the plug insertion / removal direction applied to the connector 202 (force in the PQ direction) but also the force perpendicular to the plug insertion / removal direction (force in the ST direction) (see FIG. 14A) Is effective in suppressing the influence of force.

Embodiment 4 FIG.
In the present embodiment, a connector 203 having a configuration (shape) different from that of the connector 21 described in the first embodiment will be described.

  FIG. 18 is a diagram illustrating a state in which the plug 50 is inserted into and removed from the connector 203 according to the present embodiment.

  FIG. 18 is a diagram corresponding to FIG. 8A of the first embodiment. In FIG. 18 of the present embodiment, the same components as those in FIG. 8A of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The connector 203 according to the present embodiment includes a plug insertion port 240 below the rear surface portion 214 where the land contact portion 22b is provided. Inside the plug insertion port 240 (plug housing portion), a plug connection portion 22a that is an end portion of the conductor 22 connected to the plug 50 is exposed.

  In the connectors 21, 201, and 202 according to the first to third embodiments, the conductor 22 has a substantially S-shaped cross section. In the present embodiment, the opening of the plug insertion port 240 is provided on the land 33 side, and the cross-sectional shape of the conductor 22 is substantially U-shaped.

  As shown in FIG. 18, when the plug 50 is removed from the plug insertion port 240 of the connector 203 attached to the printed circuit board 31, a force in the Q direction is applied to the lower portion of the connector 203. Then, a force in the Q3 direction is applied to the upper portion of the connector 203, and a force is applied in a direction in which the contact is peeled off to the joint portion by soldering between the land contact portion 22b and the land 33. At this time, if the connector support 23 is in a position facing the land contact portion 22b, the support lower surface 231 of the connector support 23 abuts the mounting surface 311, and the upper portion of the connector 203 moves in the Q3 direction. Suppress. Thereby, it is possible to prevent the contact portion (solder joint portion) due to soldering between the land contact portion 22b and the land 33 from being damaged.

  As shown in FIG. 18, when the plug 50 is inserted into the plug insertion port 240 of the connector 203 attached to the printed circuit board 31, the lower side of the connector 203 is pushed in the P direction. Then, a force is applied to the upper side of the connector 203 in the P3 direction. As a result, a force is applied in a direction in which the land contact portion 22 b is pressed against the land 33. In this case, there is little fear that the land 33 and the land contact portion 22b are peeled off, but there is a possibility that the soldered portion (solder joint portion) may be damaged. In order to avoid such a state, a protrusion similar to the connector support 23 may be formed above the rear surface portion 214.

  The connector 203 according to the present embodiment has the same plug insertion direction as the board-side electrode (land contact portion 22b) of the connector 203. That is, the board-side electrode (land contact portion 22b) of the connector 203 and the plug insertion port 24 are provided on the same side (rear surface portion 214).

  According to the connector 203 according to the present embodiment, the plug 50 can be inserted from the land 33 side. The connector 203 according to the present embodiment and the connectors 21, 201, 202 according to the first to third embodiments are appropriately applied, so that it is convenient depending on the state of the board on which the connector is mounted and the product to be mounted. It is possible to select a connector with a good lead wire pull-out direction.

Embodiment 5 FIG.
In the present embodiment, a connector 204 having a configuration (shape) different from that of the connector 21 described in the first embodiment will be described.

  19A and 19B are diagrams showing the connector 204 according to the present embodiment, where FIG. 19A is a diagram showing a state in which the connector 204 is attached to the printed circuit board 31, and FIG. 19B is a diagram of the connector 204 in a state in which the connector 204 is attached to the printed circuit board 31. It is sectional drawing.

  FIG. 19A is a diagram corresponding to FIG. 5A of the first embodiment, and FIG. 19B is a diagram corresponding to FIG. 8A of the first embodiment. In FIGS. 19A and 19B of the present embodiment, the same components as those in FIGS. 5A and 8A of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Is omitted.

  In the connectors 21, 201, 202 according to the first to third embodiments, the plug insertion port 24 is formed on the bottom surface 212 side (lower side) of the front surface 213. As described above, in the connectors 21, 201, and 202 of the first to third embodiments, the shape of the plug insertion port 24 (plug housing portion) is substantially the same as or slightly larger than the shape of the plug 50.

  In the connector 204 according to the present embodiment, almost the entire front surface portion 213 is a plug insertion slot 242. As shown in FIG. 19, the connector 204 is substantially open except for the front portion 213 where the connector support 23 is formed.

  As shown in FIG. 19B, when the connector 204 is attached to the printed circuit board 31, the height of the opening of the plug insertion port 242 becomes L3. When the height of the opening of the front portion 213 of the connector 204 is L4 and the width of the printed board 31 is L5, when the connector 204 is attached to the printed board 31, the height of the opening of the plug insertion port 242 is L4-L5 = L3.

  Therefore, if the connector 204 is designed so that L3 is substantially the same as the height of the plug 50 or slightly higher than the height of the plug 50, the portion other than the connector support 23 of the front surface portion 213 of the connector 204 is inserted over the entire surface. The mouth 242 may be used. At this time, it is necessary to design the connector 204 in consideration of the width of the board mounting base 40.

  That is, when the plug 50 is inserted into the plug insertion port 242, the size of the opening of the plug insertion port 242 is designed so that a predetermined (slight) gap is formed between the periphery of the opening and the plug 50 in the vertical and horizontal directions. To do.

  The size (L3) of the opening of the plug insertion opening 242 when the connector 204 is attached to the printed circuit board 31 is set so that the plug 50 can be easily inserted, and the connecting portion with the conductor 22 inside the plug 50 and the plug of the conductor 22 It is preferable to design the size so that the connection portion 22a can be easily connected.

  According to the connector 204 according to the present embodiment, since almost the entire front surface portion 213 can be used as the plug insertion port 242, the manufacturing process of the connector 204 can be simplified, and the manufacturing cost can be reduced.

  As mentioned above, although Embodiment 1-5 was demonstrated, you may implement combining 2 or more embodiment among these. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

  3, 3a-3l LED, 5 Instrument body cover, 6 Light source cover, 7 DC power supply, 7a Power supply side connection part, 8, 9, 10 Plug with wiring, 11 Instrument body bottom, 21, 21a, 21b, 21c, 21d Connector , 22 conductor, 22a plug connection part, 22b land contact part, 23, 23a, 23b connector support, 24 plug insertion slot, 25 positioning projection, 26a, 26b, 26c, 26d connector support, 31, 31a, 31b Print Board, 32, 32a, 32b Conductor pattern, 33 lands, 34 Connector insertion hole, 35 Notch, 40 Board mount, 41 Connector through hole, 42 Body notch, 50 Plug, 51, 51a, 51b, 51c, 51d Connector, 57, 58, 59 Plug with wiring, 100 LED lighting fixture, 201, 20 , 203, 204 connector, 211 upper surface portion, 212 bottom surface portion, 213 front surface portion, 214 rear surface portion, 215 side surface portion, 216 side surface portion, 231 support lower surface, 240, 242 plug insertion port, 311, 311a, 311b mounting surface, 312, 312 a, 312 b Non-mounting surface, 341 hole periphery.

Claims (8)

A connector that is attached to a circuit board having a mounting surface for mounting a conductor pattern and connects a plug, and includes a top surface, a bottom surface, and a side surface.
Provided on the bottom surface side of the side surface portion, inserted into a connector insertion hole provided in the circuit board, disposed on the surface of the circuit board opposite to the mounting surface, and physically connecting the plug Plug connection for electrical and electrical connection;
A board connecting portion that is provided on the upper surface portion side of the side surface portion and is physically and electrically connected to the conductor pattern provided on the mounting surface;
A connector comprising:   2. The connector according to claim 1, further comprising: a protruding portion that abuts a vicinity of a peripheral edge forming the connector insertion hole on the upper surface portion side of the side surface portion. The protrusion is
The connector according to claim 2, wherein the connector is formed at a position opposite to a position of the board connecting portion provided on the side surface portion.   4. The connector according to claim 1, further comprising a positioning protrusion corresponding to a notch portion in which a peripheral edge forming the connector insertion hole is notched on the upper surface portion side of the side surface portion. . The side part includes a front part and a rear part facing each other,
The substrate connecting portion is provided on the upper surface side of the rear surface portion,
The plug connecting portion includes a plug insertion slot for inserting the plug,
The connector according to claim 1, wherein the plug insertion port is provided on the bottom surface side of either the front surface portion or the rear surface portion. The side part further includes a right side part and a left side part facing between the front part and the rear part,
The protrusion is
The connector according to claim 5, wherein the connector is formed on the front part, the rear part, the right side part, and the left side part. The connector according to any one of claims 1 to 6,
A surface mount light source,
A light source module comprising: a mounting surface on which the light source is mounted; and a circuit board having a connector insertion hole into which the connector is inserted on the mounting surface. The light source module according to claim 7;
An instrument body to which the light source module is attached;
A lighting fixture comprising: a power supply device housed inside the fixture body and electrically connected to the connector of the light source module.

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