JP2013175343A - Vehicle lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact vehicle lamp by mounting a board on a lamp body by bending the board for loading semiconductor light-emitting elements and electronic components.SOLUTION: A board 11 on which electronic components 19, 19, ... and semiconductor light-emitting elements 18, 18, 18 functioning as light sources are loaded: is arranged inside a lamp outer case 4 formed of a lamp body 2 and a cover 3; and has a first region 16, and a second region 17 bent in a depth direction of the lamp outer case with respect to the first region. At least the semiconductor light-emitting elements are loaded on the first region, the electronic components are loaded on the second region, and the board is mounted by being positioned, on the lamp body.

Description

  The present invention relates to a vehicular lamp. More specifically, the present invention relates to a technical field for miniaturization by bending a substrate on which a semiconductor light emitting element and electronic components are mounted and attaching the substrate to a lamp body.

  For example, a vehicular lamp has a substrate disposed inside a lamp outer casing constituted by a cover and a lamp body, and a semiconductor light-emitting element that functions as a light source and electronic components that perform various controls are mounted on the substrate. (For example, refer to Patent Document 1).

  In the vehicular lamp described in Patent Document 1, a semiconductor light emitting element and an electronic component are mounted on a flat substrate facing forward, and the substrate is attached to the front surface of the lamp body and covered with a lens from the front. .

JP 2010-135198 A

  However, in the vehicular lamp described in Patent Document 1, all the semiconductor light-emitting elements and electronic components are mounted on the board facing forward, and the entire board is facing forward. This has hindered miniaturization of vehicle lamps.

  Therefore, an object of the vehicle lamp of the present invention is to reduce the size.

  In order to solve the above-mentioned problems, a vehicular lamp is a vehicular lamp in which a substrate on which an electronic component and a semiconductor light-emitting element functioning as a light source are mounted is arranged inside a lamp outer casing constituted by a lamp body and a cover. The lamp has a first region and a second region bent in the depth direction in the lamp outer casing with respect to the first region, and at least the semiconductor light emitting element is the first region. And the electronic component is mounted on the second region, and the substrate is positioned and attached to the lamp body.

  Therefore, in the vehicular lamp, it is attached to the lamp body with the first area and the second area of the board facing different directions.

  The vehicular lamp according to the present invention is a vehicular lamp in which a substrate on which an electronic component and a semiconductor light-emitting element functioning as a light source are mounted is disposed inside a lamp outer casing constituted by a lamp body and a cover. Has a first region and a second region bent in the depth direction in the lamp outer casing with respect to the first region, and at least the semiconductor light emitting element is mounted on the first region and the electron A component is mounted on the second region, and the board is positioned and attached to the lamp body.

  Accordingly, the semiconductor light emitting element and the electronic component are mounted on the first region and the second region bent with respect to the first region, respectively, and the first region and the second region of the substrate have different directions. Therefore, the vehicle lamp can be reduced in size.

  In the invention described in claim 2, an optical member for controlling light emitted from the semiconductor light emitting element is disposed inside the lamp outer casing, and the optical member is attached to the lamp body together with the substrate. ing.

  Therefore, it is easy to attach the optical member and the substrate to the lamp body, and the workability can be improved.

  In the invention described in claim 3, a positioning protrusion is provided in one of the lamp body and the first region, a positioning hole is formed in the other, and the positioning protrusion is inserted into the positioning hole, The substrate is positioned with respect to the lamp body.

  Accordingly, the substrate can be easily positioned with respect to the lamp body with a simple configuration.

  According to a fourth aspect of the present invention, the lamp body is provided with a socket portion into which a connector is inserted, and the base surface portion formed of an insulating material on the substrate is connected to the semiconductor light emitting element and the electronic component. A conductive portion formed of a plate-like conductive material is provided, and a portion of the conductive portion protrudes from the base surface portion and is provided as a connection terminal portion that is inserted into the socket portion and connected to the connector, The connection terminal portion is formed by folding a part of the conductive material.

  Therefore, the rigidity of the connection terminal portion is high, and the connection operation of the connector to the connection terminal portion can be performed easily and reliably.

  In the invention described in claim 5, the first region is attached to the lamp body, and a planar first attachment portion and the second region that are opposed to the first region are attached to the lamp body. A planar second mounting portion facing the second region is provided.

  Therefore, it is easy to attach the first area and the second area, and it is possible to improve workability in the work of attaching the board to the lamp body.

  The best mode for carrying out the vehicular lamp of the present invention will be described below with reference to the accompanying drawings.

  In the following description, the direction of the light source, that is, the direction in which light is emitted from the light source is assumed to be the front, and the front, rear, up, down, left and right directions are indicated.

  In addition, the front and rear, up and down, left and right directions shown below are for convenience of explanation, and the implementation of the present invention is not limited to these directions.

  First, a first embodiment will be described (see FIGS. 1 to 4).

  As shown in FIG. 1, the vehicular lamp 1 according to the first embodiment includes a lamp body 2 having a recess opened forward and a cover 3 that closes an opening surface of the lamp body 2. The lamp body 2 and the cover 3 constitute a lamp outer casing 4, and the inner space of the lamp outer casing 4 is formed as a lamp chamber 5.

  The lamp body 2 includes a substrate placement portion 6 and a socket portion 7 protruding rearward from the substrate placement portion 6.

  The substrate placement portion 6 includes a first portion 8 whose thickness direction is set to the front-rear direction and a second portion 9 located on the rear side of the first portion 8 whose thickness direction is set to the left-right direction.

  The first portion 8 is formed with a shallow placement recess 10 opened forward, and the front surface of the placement recess 10 is formed as a first mounting portion 10a. The positioning recess 10 is provided with positioning protrusions 10b and 10b protruding forward from the first mounting portion 10a. A communication hole 10 c communicating with the second portion 9 is formed in the first portion 8.

  The second portion 9 is formed in a rectangular tube shape penetrating in the front-rear direction, the front opening communicates with the communication hole 10 c, and the rear opening communicates with the socket portion 7. Of the inner surface of the second portion 9, the surface facing in the left-right direction is formed as second attachment portions 9 a, 9 a.

  The second portion 9 is provided with ribs 9b, 9b, and 9b that are separated from each other in the vertical direction on one second mounting portion 9a and extend in the front-rear direction. Ribs 9c and 9c are provided.

  The socket part 7 is formed in a rectangular tube shape penetrating forward and backward.

  A substrate 11 is attached to the substrate placement portion 6 of the lamp body 2. The substrate 11 is a flexible printed wiring board. The substrate 11 includes a plate-like conductive portion 12 formed of a conductive material such as copper foil, a base surface portion (cover film) 13 and a base surface portion (base film) 14 laminated on both surfaces in the thickness direction of the conductive portion 12, respectively. A part of the conduction part 12 protrudes from the base surface parts 13 and 14 and is provided as connection terminal parts 15 and 15.

  The conduction part 12 is a part constituting the circuit pattern of the substrate 11, and a part thereof is exposed by a plurality of openings formed in the base surface part 13.

  The connection terminal portion 15 is formed by folding three portions 15a, 15b, and 15c on the front end side of the conductive material in the thickness direction (see FIGS. 2 and 3). The number of sheets to be folded is arbitrary, and may be two or four or more.

  As shown in FIG. 1, the substrate 11 except for the connection terminal portions 15, 15 is, for example, 90 ° behind the first region 16 and the first region 16 facing in the front-rear direction, that is, outside the lamp. The housing 4 is formed by a second region 17 that is bent in the depth direction and faces in the left-right direction.

  In the first region 16, positioning holes 16a and 16a are formed. In the first region 16, semiconductor light-emitting elements 18, 18, 18 each functioning as a light source are joined by soldering or the like to each portion of the conductive portion 12 exposed by a plurality of openings formed in the base surface portion 13. It is installed. The semiconductor light emitting elements 18, 18, 18 are mounted on the front side of the first region 16, and light is emitted forward from the semiconductor light emitting elements 18, 18, 18, respectively.

  In the second region 17, electronic components 19, 19,... Such as resistors are joined to the respective portions of the conductive portion 12 exposed by the plurality of openings formed in the base surface portion 13 by soldering or the like. It is installed.

  In addition to the semiconductor light emitting elements 18, 18, 18, electronic components 19, 19,... May be mounted in the first region 16.

  In the substrate 11 configured as described above, the second region 17 and the connection terminal portions 15 and 15 are inserted into the communication hole 10c formed in the first portion 8 of the lamp body 2 from the front side. Is disposed inside the second portion 9, and the connection terminal portions 15 and 15 are disposed inside the socket portion 7 (see FIG. 4). The second region 17 is pressed from both sides by the ribs 9b, 9b, 9b and the ribs 9c, 9c inside the second portion 9, and is attached between the second mounting surface portions 9a, 9a. At this time, the positioning protrusions 10 b and 10 b provided in the first portion 8 are inserted into the positioning holes 16 a and 16 a of the first region 16, respectively, and the substrate 11 is positioned with respect to the lamp body 2.

  The vehicle lamp 1 is configured such that a positioning projection is provided in the first region 16 and a positioning hole is formed in the first portion 8 so that the substrate 11 is positioned with respect to the lamp body 2. May be.

  The substrate 11 is attached to the lamp body 2 by appropriate means such as screwing or caulking.

  A connector (not shown) connected to a power supply circuit (not shown) is inserted into the socket portion 7 of the lamp body 2 from the rear, and the connector is connected to the connection terminal portions 15 and 15. Accordingly, a drive current is supplied from the power supply circuit to the semiconductor light emitting elements 18, 18, 18 through the connector and the conducting portion 12, and light is emitted forward from the semiconductor light emitting elements 18, 18, 18.

  As described above, the vehicular lamp 1 has the first region 16 and the second region 17 that is bent in the depth direction of the lamp outer casing 4 with respect to the first region 16. .. Are mounted on the first region 16, the electronic components 19, 19,... Are mounted on the second region 17, and the substrate 11 is positioned and attached to the lamp body 2. ing.

  Therefore, the semiconductor light emitting elements 18, 18, 18 and the electronic components 19, 19,... Are mounted on the first region 16 and the second region 17 bent with respect to the first region 16, respectively. The first region 16 and the second region 17 of the substrate 11 are in different states. That is, by bending a region that does not contribute to light emission, the minimum necessary light emitting area can be secured when the vehicular lamp 1 is viewed from the outside, and the area of the portion facing the front of the substrate 11 is small. The vehicle lamp 1 can be downsized.

  Further, since the semiconductor light emitting elements 18, 18, 18 are mounted in a region different from the region where the electronic components 19, 19,... Are mounted, the semiconductor light emitting elements 18, 19,. The influence of heat on 18, 18 is reduced, and the life of the semiconductor light emitting elements 18, 18, 18 can be extended.

  Furthermore, since the electronic components 19, 19,... Are not visually recognized from the outside, the design of the vehicular lamp 1 can be improved.

  Further, since the area of the portion facing the front of the substrate 11 is small and the vehicle lamp 1 is downsized, the front view of the vehicle lamp 1 can be reduced.

  Further, since the positioning projections 10b and 10b are provided on the lamp body 2 and the positioning holes 16a and 16a are formed in the first area 16 so that the first area 16 is positioned on the lamp body 2, the substrate can be configured with a simple configuration. 11 can be easily positioned with respect to the lamp body 2.

  Furthermore, since the connection terminal portions 15 and 15 are formed by folding a part of the conductive material, the connection terminal portions 15 and 15 have a higher rigidity, and the connection terminal portions 15 and 15 have a higher rigidity. Connection operation can be performed easily and reliably.

  In addition, a planar first mounting portion 10a facing forward to the lamp body 2 and facing the first region 16, and a planar second mounting portion 9a facing the second region 17 facing the left and right direction, 9a is provided, the first region 16 and the second region 17 can be easily attached, and the workability in attaching the substrate 11 to the lamp body 2 can be improved.

  Next, a second embodiment will be described (see FIGS. 5 and 6).

  The vehicular lamp 21 according to the second embodiment includes a lamp body 22 having a recess opened forward and a cover 23 that closes the opening surface of the lamp body 22. The lamp body 22 and the cover 23 constitute a lamp outer casing 24, and an inner space of the lamp outer casing 24 is formed as a lamp chamber 25.

  The lamp body 22 includes a substrate placement portion 26 and a cable insertion portion 27.

  The substrate placement portion 26 includes a first portion 28 whose thickness direction is set to the front-rear direction and a second portion 29 which is positioned on the rear side of the first portion 28 and whose thickness direction is set to the left-right direction.

  The first portion 28 is formed with a shallow placement recess 30 opened forward, and the front surface of the placement recess 30 is formed as a first attachment portion 30a. The positioning recess 30 is provided with positioning protrusions 30b, 30b, 30b protruding forward from the first mounting portion 30a. A projecting portion 30 c that protrudes forward from the first mounting portion 30 a is provided at the center of the arrangement recess 30. The protrusion 30c is formed with a screw insertion hole 30d penetrating in the front-rear direction. A communication hole 30 e communicating with the second portion 29 is formed in the first portion 28.

  The second portion 29 is formed in a box shape that opens vertically forward, and the front opening communicates with the communication hole 30e. Of the inner surface of the second portion 29, the surface facing in the left-right direction is formed as second mounting portions 29a, 29a.

  The second portion 29 is provided with ribs 29b, 29b and 29b which are vertically spaced apart from each other on one second mounting portion 29a, and front and rear at both upper and lower end portions of the other second mounting portion 29a. Ribs 29c, 29c extending in the direction are provided.

  The cable insertion part 27 is formed in a cylindrical shape penetrating in the front-rear direction, protrudes rearward from the first part 28, and is provided side by side in a state adjacent to the second part 29 on the left and right.

  A substrate 31 is attached to the substrate placement portion 26 of the lamp body 22. The substrate 31 includes a first base plate 32, a second base plate 33, and a flexible printed wiring board 34, each formed of a metal material or a resin material.

  The first base plate 32 faces the front-rear direction, and the second base plate 33 faces the left-right direction.

  The flexible printed wiring board 34 includes a first region 35 attached to the first base plate 32, a second region 36 attached to the second base plate 33, the first region 35, and the first region 35. And a bent portion 37 located between the two regions 36 and bent. Therefore, the second region 36 is bent, for example, 90 ° backward with respect to the first region 35, that is, in the depth direction of the lamp outer casing 24.

  Positioning holes 35a, 35a, 35a and insertion holes 35b penetrating the first base plate 32 and the first region 35 are formed in the substrate 31.

  In the first region 35, semiconductor light emitting elements 38, 38, and 38 that function as light sources are mounted. The semiconductor light emitting elements 38, 38, 38 are mounted on the front surface of the first region 35, and light is emitted from the semiconductor light emitting elements 38, 38, 38 toward the front.

  A connector terminal 39 is disposed at the lower end of the first region 35.

  In the second region 36, electronic components 40, 40,... Such as resistors are mounted.

  In addition to the semiconductor light emitting elements 38, 38, 38, electronic components 40, 40,... May be mounted in the first region 35.

  In the substrate 31 configured as described above, the second region 36 is inserted into the communication hole 30e formed in the first portion 28 of the lamp body 22 from the front side and disposed inside the second portion 29 ( (See FIG. 6). The second region 36 is pressed from both sides by the ribs 29b, 29b, 29b and the ribs 29c, 29c inside the second portion 29, and is attached between the second mounting surface portions 29a, 29a. At this time, the positioning projections 30b, 30b, 30b and the projection 30c provided in the first portion 28 are inserted into the positioning holes 35a, 35a, 35a and the insertion hole 35b of the first region 35, respectively. Positioned relative to the body 22.

  The vehicle lamp 21 is configured such that a positioning protrusion is provided in the first region 35 and a positioning hole is formed in the first portion 28 so that the substrate 31 is positioned with respect to the lamp body 22. May be.

  A cable 41 is disposed in the cable insertion portion 27 of the lamp body 22, and a coupling portion 41 a is provided in the middle portion of the cable 41. In the state where the coupling portion 41a is coupled to the rear end portion of the cable insertion portion 27, the cable 41 has one end connected to the connector terminal 39 and the other end connected to a power supply circuit (not shown). Accordingly, a drive current is supplied from the power supply circuit to the semiconductor light emitting elements 38, 38, 38 via the cable 41, and light is emitted forward from the semiconductor light emitting elements 38, 38, 38.

  An optical member 42 is disposed between the cover 23 and the substrate 31 in the lamp chamber 5. The optical member 42 is, for example, an inner lens, and includes a base portion 43 that faces in the front-rear direction and a mounted portion 44 that protrudes rearward from the center portion of the base portion 43. The base portion 43 is provided with lens portions 43a, 43a, and 43a positioned to face the front sides of the semiconductor light emitting elements 38, 38, and 38, respectively. The attached portion 44 is formed with a screw hole 44a opened rearward.

  In addition, as an optical member, the reflector which reflects the light radiate | emitted from the semiconductor light-emitting elements 38, 38, 38, and optically enlarges the light emission area may be used, for example.

  In the optical member 42, a mounting screw 45 into which the screw insertion hole 30d of the lamp body 22 is inserted is screwed into the screw hole 44a in a state where the mounted portion 44 presses the central portion of the first region 35 of the substrate 31 from the front. Is attached to the lamp body 22. Therefore, the optical member 42 is attached to the lamp body 22 together with the substrate 31.

  As described above, in the vehicular lamp 21, since the optical member 42 is attached to the lamp body 22 together with the substrate 31, the attaching operation of the optical member 42 and the substrate 31 to the lamp body 22 is simple, and the workability is improved. Can be planned.

  As described above, the vehicular lamp 21 has the first area 35 and the second area 36 that is bent in the depth direction of the lamp outer casing 24 with respect to the first area 35. The semiconductor light emitting elements 38, 38, 38 are mounted in the first region 35, the electronic components 40, 40,... Are mounted in the second region 36, and the substrate 31 is positioned and attached to the lamp body 22. ing.

  Therefore, the semiconductor light emitting elements 38, 38, 38 and the electronic components 40, 40,... Are mounted on the first region 35 and the second region 36 bent with respect to the first region 35, respectively. The first region 35 and the second region 36 of the substrate 31 are in different states. That is, by bending a region that does not contribute to light emission, the minimum necessary light emitting area can be secured when the vehicular lamp 21 is viewed from the outside, and the area of the portion facing the front of the substrate 31 is small. The vehicle lamp 21 can be downsized.

  Further, since the area of the portion facing the front of the substrate 31 is small and the vehicle lamp 21 is downsized, the front view of the vehicle lamp 21 can be reduced.

  Further, since the positioning projections 30b, 30b, 30b are provided on the lamp body 22 and the positioning holes 35a, 35a, 35a are formed in the first area 35 so that the first area 35 is positioned on the lamp body 22, With this configuration, the substrate 31 can be easily positioned with respect to the lamp body 22.

  Furthermore, a planar first mounting portion 30a facing forward to the lamp body 22 and facing the first region 35, and a planar second mounting portion 29a facing left and right and facing the second region 36, 29a is provided, the first region 35 and the second region 36 can be easily attached, and the workability in attaching the substrate 31 to the lamp body 22 can be improved.

  Further, heat generated in the semiconductor light emitting elements 38, 38, 38 is radiated through the first base plate 32, and heat generated in the electronic components 40, 40,. Since it is possible to suppress the transmission to the first base plate 32 by dissipating heat, it is possible to extend the life of the semiconductor light emitting elements 38, 38, 38.

  Further, since the semiconductor light emitting elements 38, 38, 38 are mounted in a region different from the region where the electronic components 39, 39,... Are mounted, the semiconductor light emitting elements 38, 38,. The influence of heat on 38 and 38 is reduced, and the lifetime of the semiconductor light emitting elements 38, 38 and 38 can be extended.

  In addition, since the electronic components 39, 39,... Are not visually recognized from the outside, the design of the vehicular lamp 21 can be improved.

  In the vehicular lamps 1 and 21, the numbers of the semiconductor light-emitting elements 18 and 38 and the electronic components 19 and 40 mounted on the substrates 11 and 31 are arbitrary, and the positioning protrusions 10b and 30b and the positioning holes 16a. , 35a are arbitrary as long as they are the same number. The shapes and structures of the respective parts shown in the best mode for carrying out the invention described above are merely examples of the embodiments performed in practicing the present invention. The range should not be interpreted in a limited way.

2 to 4 show a first embodiment of a vehicular lamp according to the present invention, which is an exploded perspective view of the vehicular lamp. It is an expansion perspective view which shows the connection terminal part before forming by folding. It is an expansion perspective view which shows the connection terminal part formed by folding. It is an expanded sectional view which shows the state by which the connection terminal part was inserted and arrange | positioned at the socket part. FIG. 6 shows a second embodiment of the vehicular lamp according to the present invention, and FIG. 6 is an exploded perspective view of the vehicular lamp. It is a horizontal sectional view of a vehicular lamp.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp, 2 ... Lamp body, 3 ... Cover, 4 ... Lamp outer casing, 7 ... Socket part, 9a ... 2nd attaching part, 10a ... 1st attaching part, 10b ... Positioning protrusion, 11 ... Substrate, 12 ... conductive portion, 13 ... base surface portion, 14 ... base surface portion, 15 ... connection terminal portion, 16 ... first region, 16a ... positioning hole, 17 ... second region, 18 ... semiconductor light emitting element, 19 ... Electronic parts, 21 ... Vehicle lamp, 22 ... Lamp body, 23 ... Cover, 24 ... Lamp outer casing, 29a ... Second mounting portion, 30a ... First mounting portion, 30b ... Positioning projection, 31 ... Substrate, 35 ... 1st area | region, 35a ... Positioning hole, 36 ... 2nd area | region, 38 ... Semiconductor light-emitting device, 40 ... Electronic component, 42 ... Optical member

Claims (5)

A vehicular lamp in which a substrate on which an electronic component and a semiconductor light emitting element functioning as a light source are mounted is disposed inside a lamp outer casing constituted by a lamp body and a cover,
The substrate has a first region and a second region bent in a depth direction in the lamp outer casing with respect to the first region;
At least the semiconductor light emitting element is mounted in the first region and the electronic component is mounted in the second region;
A vehicular lamp characterized in that the substrate is positioned and attached to the lamp body. An optical member for controlling the light emitted from the semiconductor light emitting element is disposed inside the lamp outer casing,
The vehicular lamp according to claim 1, wherein the optical member is attached to the lamp body together with the substrate. A positioning protrusion is provided on one of the lamp body and the first region, and a positioning hole is formed on the other.
The vehicular lamp according to claim 1 or 2, wherein the positioning protrusion is inserted into the positioning hole to position the substrate with respect to the lamp body. A socket part into which a connector is inserted into the lamp body is provided;
A base surface portion formed of an insulating material on the substrate and a conductive portion formed of a plate-like conductive material to which the semiconductor light emitting element and the electronic component are connected;
A part of the conduction part protrudes from the base surface part, is inserted into the socket part and is provided as a connection terminal part to which the connector is connected,
4. The vehicular lamp according to claim 1, wherein the connection terminal portion is formed by folding a part of the conductive material. 5. A planar first mounting portion that is attached to the lamp body and is opposed to the first region and a planar second that is attached to the second region and is opposed to the second region. The vehicle lamp according to claim 1, 2, 3, or 4 characterized by the above-mentioned.

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