JP2014104918A - In-vehicle light emitting device module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light emitting device module that improves an electrical contact of the light emitting device, and facilitates assembling.SOLUTION: A first light emitting diode bus bar 38 for fixing a resistor 14 is fixed to a casing 18 by insert molding. The light emitting diode bus bar for fixing a diode 16 is fixed similarly at the back side from the first light emitting diode bus bar 38 across a partition wall 28. A tip that is bent down diagonally in each light emitting diode bus bar protrudes into a bottom area 44. A light emitting diode 12 is inserted in a light collecting hood 24, and each lead line 42 is inserted into a corresponding hole 43 provided in a bottom plate 30 of the casing 18. The tip of each light emitting diode bus bar is pressed down while coming into contact with a side surface of the lead line 42 moving downward, and comes into electrical contact with the lead line 42 by a biasing force in a state where the light emitting diode 12 is fixed.

Description

  The present invention relates to an in-vehicle light emitting device module, and more particularly to a technique for mounting a light emitting device having a lead wire.

  An automobile is provided with an illumination device that illuminates the interior of the vehicle. As a light source of a lighting device, light emitting devices such as a light bulb and a light emitting diode are widely used. In recent years, light emitting diodes that emit high-luminance light have been developed and commercialized. There are also various colors of light emitted from the light emitting diodes. Light emitting diodes are used in place of light bulbs because they consume less power and have a longer life than conventional light bulbs.

In general, a light emitting diode is used together with a peripheral circuit including a resistor or the like in order to prevent an excessive current and adjust brightness. In a manufacturing process of a lighting device, a light emitting device module on which a light emitting diode and a peripheral circuit are mounted is assembled first, and the light emitting device module is often attached to the lighting device. This facilitates work sharing and improves manufacturing efficiency.

  Patent Document 1 below describes a component in which a metal member used for wiring of a room lamp is integrated with a body body made of synthetic resin. Patent Documents 2 and 3 describe vehicle interior lighting devices using light bulbs (bulbs). Patent Document 4 describes a vehicular lamp using a light emitting diode having a lead wire.

JP-A-8-276456 JP 2010-205617 A JP 2010-212066 A JP 2011-42331 A

  The light emitting device module includes a light emitting device, a peripheral circuit, and a housing for housing these. In the prior art, the structure for attaching the light emitting device has been complicated in order to improve the electrical contact between the light emitting device and the peripheral circuit. Therefore, there has been a problem that the assembly of the light emitting device module is not easy.

  An object of the present invention is to improve the electrical contact of a light emitting device and facilitate the assembly of the light emitting device module.

  The present invention provides an in-vehicle light emitting device module for holding a light emitting device, having a hole through which a lead wire of the light emitting device passes, wherein the main body of the light emitting device is located on one surface side, and the surface on the other surface side A light emitting device holding portion for holding the light emitting device in a state where the lead wire protrudes, a bus bar holding portion for holding a conductive bus bar in contact with the lead wire, and the bus bar from the bus bar holding portion to the lead wire The front end of the bus bar protruding toward the bus bar and protruding from the bus bar holding portion is in contact with the lead wire protruding from the hole by a biasing force.

  In the in-vehicle light emitting device module according to the present invention, preferably, the lead wire is fixed in the hole.

  ADVANTAGE OF THE INVENTION According to this invention, the electrical contact of a light emitting device is favorable and the light emitting device module which is easy to assemble can be implement | achieved.

1 is a perspective view of a light emitting device module according to an embodiment of the present invention. It is sectional drawing of the light emitting device module which concerns on embodiment of this invention. 1 is a perspective view of a light emitting device module according to an embodiment of the present invention. It is a figure which shows a 1st light emitting diode bus bar and a 2nd light emitting diode bus bar. It is a figure explaining the assembly process of a light emitting device module. It is sectional drawing of the light-emitting device module which concerns on a modification. It is a perspective view of the light emitting device module which concerns on a modification.

  FIG. 1 is a perspective view of a light emitting device module 10 according to an embodiment of the present invention as viewed obliquely from above. FIG. 2 is a cross-sectional view taken along line AB in FIG. In the light emitting device module 10, a light emitting diode 12 and a resistor 14 and a diode 16 that constitute a peripheral circuit thereof are mounted on a housing 18. In the following description, the x-axis positive direction in FIG. 1 is the right direction, and the z-axis positive direction is the upward direction.

  The housing 18 includes a component mounting part 22, a light collecting hood 24, and a connector part 20. The housing 18 is formed of an insulator such as plastic resin. The component attachment portion 22 is formed with a component attachment region 26 that opens upward. The component attachment area 26 is an area surrounded by the bottom plate 30, the side wall 31 formed around the bottom plate 30, and the light collecting hood 24. In the component attachment area 26, a partition wall 28 extending in the left-right direction is provided. The partition wall 28 separates the resistor attachment region 26-1 and the diode attachment region 26-2 in the y-axis direction.

  A condensing hood 24 is provided at the left end of the component mounting area 26. The condensing hood 24 has a cylindrical shape, one end of which opens upward, and the other end is closed by the bottom plate 30. Two holes 43 through which the two lead wires 42 of the light emitting diode 12 pass are provided in a region of the bottom plate 30 that covers the condensing hood 24.

  The light emitting diode 12 is fixed to the bottom plate 30 in a state in which the light emission direction is directed upward and the two lead wires 42 penetrate the holes 43. For example, by forming the hole 43 to a size that allows the lead wire 42 to be tightened, the lead wire 42 is fixed in the hole 43, and the light emitting diode 12 is held in the light collecting hood 24. The light emitting diode 12 may be fixed to the bottom plate 30 by bonding the main body to the bottom plate 30 with an adhesive or the like. Thus, the bottom plate 30 in the light collecting hood 24 holds the light emitting diode 12 in the light collecting hood 24.

  Below the component mounting area 26, a bottom area 44 that is opened downward is formed with the bottom plate 30 therebetween. FIG. 3 shows a perspective view of the light emitting device module 10 as viewed obliquely from below. As shown in this figure, the bottom region 44 is a region surrounded by the bottom plate 30 and the side wall 33 formed around the bottom plate 30. The bottom region 44 is a region in which the lead wire 42 of the light emitting diode 12 and a first light emitting diode bus bar 38 and a second light emitting diode bus bar 40 described later are projected.

  The connector portion 20 has a cylindrical shape protruding to the right side of the component mounting portion 22 and surrounds the power supply pin 32 protruding to the right side from the component mounting portion 22. The connector unit 20 is inserted into the lighting device, fixes the light emitting device module 10 to the lighting device, and electrically connects the lighting device and the power supply pin 32.

  As shown in FIGS. 1 and 2, a first connector bus bar 34 is provided on the connector part 20 side of the resistor attachment region 26-1, and a first connector bus bar 34 is provided on the connector part 20 side of the diode attachment region 26-2. A two-connector bus bar 36 is provided. The first connector bus bar 34 and the second connector bus bar 36 are formed of a conductive material and have a shape obtained by bending a belt-like plate into an L shape. As shown in FIG. 2, the laterally extending section of the first connector bus bar 34 is fixed in the resin forming the housing 18 by insert molding. A power supply pin 32 is attached to the right end of the first connector bus bar 34, and the power supply pin 32 protrudes from the component attachment portion 22 to the connector portion 20. A section extending in the vertical direction in the first connector bus bar 34 protrudes upward from the bottom plate 30 in the resistor mounting region 26-1, and the tip thereof has a split shape that is branched into two. Similarly, the section extending in the lateral direction in the second connector bus bar 36 is fixed in the resin forming the casing 18 by insert molding. A power pin 32 is attached to the right end of the second connector bus bar 36. A section extending in the vertical direction in the second connector bus bar 36 protrudes upward from the bottom plate 30 in the diode attachment region 26-2, and the tip thereof has a split shape that is branched into two.

  A first light-emitting diode bus bar 38 is provided on the side of the condensing hood 24 of the resistor mounting region 26-1, and a second light-emitting diode bus bar 40 is provided on the side of the condensing hood 24 of the diode mounting region 26-2. ing. FIG. 4 shows the shapes of the first light emitting diode bus bar 38 and the second light emitting diode bus bar 40. Each light emitting diode bus bar is made of a conductive material. Each light-emitting diode bus bar has a shape in which a belt-like plate is bent into an L shape, and a tip portion of a section extending in the lateral direction is bent obliquely downward. The tip of the section extending in the vertical direction in each light-emitting diode bus bar has a split shape that is branched into two.

  As shown in FIG. 2, the laterally extending section of the first light emitting diode bus bar 38 is fixed in the resin forming the housing 18 by insert molding. In addition, a section extending in the vertical direction in the first light emitting diode bus bar 38 protrudes upward from the bottom plate 30 in the resistor mounting region 26-1. The tip of the first light emitting diode bus bar 38 that is bent obliquely downward protrudes into the bottom region 44. The distal end portion has elasticity with respect to movement with the base portion with respect to the housing 18 as a fulcrum, and is in electrical contact with the lead wire 42 of the light emitting diode 12 by the urging force.

  Similarly, the section extending in the lateral direction in the second light emitting diode bus bar 40 is fixed in the resin forming the casing 18 by insert molding. Further, a section extending in the vertical direction in the second light emitting diode bus bar 40 protrudes upward from the bottom plate 30 in the diode attachment region 26-2. The tip of the second light emitting diode bus bar 40 that is bent diagonally downward protrudes into the bottom region 44. The distal end portion has elasticity with respect to movement with the base portion with respect to the housing 18 as a fulcrum, and is in electrical contact with the lead wire 42 of the light emitting diode 12 by the urging force. As described above, the bottom plate 30 in the housing 18 serves as a member for holding each light emitting diode bus bar in a state where the front end portion of each light emitting diode bus bar protrudes into the bottom region 44.

  As shown in FIG. 1, a lead wire on one end side of the resistor 14 is fixed to a groove having a front-end shape in the first light emitting diode bus bar 38. In addition, a lead wire on the other end side of the resistor 14 is fixed to the front-shaped groove in the first connector bus bar 34. Then, a lead wire on one end side of the diode 16 is fixed to the groove of the first split shape in the second light emitting diode bus bar 40, and a lead wire on the other end side of the diode 16 is fixed to the groove of the first split shape in the second connector bus bar 36. Lead wire is fixed.

  Next, an assembly process of the light emitting device module 10 will be described with reference to FIG. Each connector bus bar and each light emitting diode bus bar are fixed in advance to the resin forming the housing 18 by insert molding. The light emitting diode 12 is inserted into the condensing hood 24 with the light emission direction facing upward, and each lead wire 42 is inserted into a corresponding hole 43 provided in the bottom plate 30 of the housing 18. . As a result, the tip of each light-emitting diode bus bar is pressed while contacting the side surface of the lead wire 42 moving downward, and when the light-emitting diode 12 is fixed, the lead wire 42 is electrically applied by the biasing force. Contact.

  Lead wires at both ends of the resistor 14 are inserted into and fixed to the split groove in the first light emitting diode bus bar 38 and the split groove in the first connector bus bar 34. Lead wires at both ends of the diode 16 are inserted into and fixed to the front groove of the second light emitting diode bus bar 40 and the front groove of the second connector bus bar 36.

  When the connector unit 20 is inserted into the lighting device, the light emitting device module 10 is fixed to the lighting device, and the lighting device and the power supply pin 32 are electrically connected. Thus, the light emitting diode 12 is electrically connected to the lighting device via a peripheral circuit including the resistor 14 and the diode 16. The light emitting diode 12 emits light when electric power is supplied to the light emitting diode 12 by the operation of the electric circuit of the lighting device. The condensing hood 24 guides light emitted from the light emitting diode 12 upward.

  According to the light emitting device module 10 according to the embodiment of the present invention, each lead wire 42 and each light emitting diode is obtained by inserting each lead wire 42 of the light emitting diode 12 into the hole 43 provided in the bottom plate 30 of the housing 18. Electrical contact with the bus bar can be realized. Further, when the hole 43 is formed to a size that allows the lead wire 42 to be tightened, the lead wire 42 is fixed in the hole 43, and the light emitting diode 12 can be reliably fixed to the housing 18 by a simple operation. . Furthermore, since each light emitting diode bus bar is fixed to the housing 18 in advance, the number of assembling steps can be reduced.

  FIG. 6 shows a cross-sectional view of a light emitting device module 46 according to a modification. FIG. 7 is a perspective view of the light emitting device module 46 as viewed obliquely from below. In this modification, sections extending in the lateral direction of the first light emitting diode bus bar 38 and the second light emitting diode bus bar 40 are exposed on the lower surface side of the bottom plate 30, that is, the bottom region 44. The same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof is omitted.

  A section extending in the vertical direction in the first light emitting diode bus bar 38 passes through the bottom plate 30 in the vertical direction, and protrudes upward from the bottom plate 30 in the resistor mounting region 26-1. A section extending in the lateral direction in the first light emitting diode bus bar 38 is along the lower surface of the bottom plate 30. Since the first light emitting diode bus bar 38 has a section extending in the vertical direction fixed to the bottom plate 30, the section extending in the horizontal direction does not necessarily have to be fixed to the lower surface of the bottom plate 30. The tip of the first light emitting diode bus bar 38 that is bent obliquely downward is located below the condensing hood 24 in the bottom region 44. The first light-emitting diode bus bar 38 has elasticity with respect to movement about a boundary between a laterally extending section and an obliquely extending section, and is electrically connected to the lead wire 42 of the light-emitting diode 12 by an urging force. Touching. Further, with respect to the first light emitting diode bus bar 38, the section extending in the horizontal direction is not fixed to the bottom plate 30, and the section extending in the vertical direction is used as another fulcrum to contact the lead wire 42 of the light emitting diode 12. The elasticity of the time is increased.

  The second light emitting diode bus bar 40 has the same structure as the first light emitting diode bus bar 38, and is arranged side by side with the first light emitting diode bus bar 38 in the same extending direction. The second light emitting diode bus bar 40 is fixed to the housing 18 by the same structure as the first light emitting diode bus bar 38 and is in electrical contact with the lead wire 42 of the light emitting diode 12.

  In each of the above-described embodiments, a light emitting diode is employed as the light emitting device. As the light emitting device according to the present invention, other devices having lead wires as power supply means may be employed.

  Further, in each of the above-described embodiments, both ends of the resistor 14 and both ends of the diode 16 are inserted into the groove of the first split shape of the bus bar. In addition to such a configuration, soldering, screwing, or the like may be employed.

  DESCRIPTION OF SYMBOLS 10,46 Light emitting device module, 12 Light emitting diode, 14 Resistor, 16 Diode, 18 Housing | casing, 20 Connector part, 22 Component attaching part, 24 Condensing hood, 26 Component attaching area, 26-1 Resistor attaching area, 26 -2 Diode mounting area, 28 Bulkhead, 30 Bottom plate, 31, 33 Side wall, 32 Power supply pin, 34 First connector bus bar, 36 Second connector bus bar, 38 First light emitting diode bus bar, 40 Second light emitting diode bus bar, 42 Lead wire , 43 holes, 44 bottom region.

Claims (2)

In the in-vehicle light emitting device module holding the light emitting device,
A light emitting device having a hole through which a lead wire of the light emitting device penetrates, and holding the light emitting device in a state where the main body of the light emitting device is located on one surface side and the lead wire protrudes on the other surface side A holding part;
A bus bar holding portion for holding a conductive bus bar in contact with the lead wire;
The bus bar protrudes from the bus bar holding portion toward the lead wire,
The front end of the bus bar protruding from the bus bar holding portion is
Contacting the lead wire protruding from the hole by a biasing force;
An in-vehicle light emitting device module characterized by the above. The in-vehicle light emitting device module according to claim 1,
The in-vehicle light emitting device module, wherein the lead wire is fixed in the hole.

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