LAMP FOR VEHICLE

Abstract

A lamp for a vehicle includes a board device including a first mounting part and a second mounting part bent and extending from the first mounting part, a light source device mounted on the first mounting part and including a plurality of light sources, and a light source controller mounted on the second mounting part, and electrically connected to the plurality of light sources to control a current flowing through the plurality of light source. The board device further includes a bending device formed at a portion at which the first mounting part and the second mounting part meet each other, and formed to be bent, such that a specific angle is formed between the first bending part and the second bending part.

Claims

1. A lamp for a vehicle comprising: a board device including a first mounting part and a second mounting part bent and extending from the first mounting part; a light source device mounted on the first mounting part and including a plurality of light sources; and a light source controller mounted on the second mounting part and being electrically connected to the plurality of light sources to control a current flowing through the plurality of light sources, wherein the board device further includes: a bending device formed at a portion at which the first mounting part and the second mounting part meet each other, and being bent such that a specific angle is formed between the first bending part and the second bending part.

2. The lamp of claim 1, wherein the first mounting part, the second mounting part, and the bending parts are integrally formed.

3. The lamp of claim 1, wherein the board device further includes: a connection circuit pattern in the bending device and provided to electrically connect the plurality of light sources to a plurality of control devices provided in the light source controller.

4. The lamp of claim 3, wherein: the plurality of light sources are connected to each other in series, and the plurality of control devices are connected to the plurality of light sources in parallel, respectively, to bypass currents flowing through the plurality of light sources.

5. The lamp of claim 1, further comprising: a shielding cover mounted on the second mounting part to cover the light source controller and being adapted to shield an electromagnetic wave.

6. The lamp of claim 1, wherein: a plurality of bending devices are provided at an edge of the first mounting part, a plurality of second mounting parts are provided to correspond to the plurality of bending devices, and a plurality of light source controllers are provided corresponding to the plurality of second mounting parts such that a plurality of control devices are distributed and mounted in the plurality of second mounting parts.

7. The lamp of claim 6, wherein the second mounting part includes: second up-down mounting parts bent and extending from an upper end portion and a lower end portion of the first mounting part; and left-right mounting parts bent and extending from side end portions of the first mounting part, wherein the light source controller includes: a first light source controller mounted on the second up-down mounting part and being electrically connected to the light source device; and a second light source controller mounted on the second left-right mounting part and being electrically connected to the light source device.

8. The lamp of claim 1, wherein the first mounting part includes a metal material.

9. The lamp of claim 1, wherein the second mounting part includes a glass fiber material.

10. The lamp of claim 1, wherein the second mounting part includes a metal material.

11. The lamp of claim 1, further comprising: a heat sink device adapted to make contact with the first mounting part and the second mounting part and to receive heat from the first mounting part and the second mounting part; and a cooling fan mounted at one side of the heat sink device to form a flow of air and to cool the heat sink device.

12. The lamp of claim 11, wherein the cooling fan is mounted on a surface of the heat sink device facing a direction opposite to a direction of the first mounting part.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other objects, features and advantages of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings:

[0032] FIG. 1 is a view schematically illustrating the configuration of a lamp for a vehicle, according to an embodiment of the present disclosure;

[0033] FIG. 2 schematically illustrates a lamp for a vehicle, according to an embodiment of the present disclosure, in which a bending device is formed on a board device;

[0034] FIG. 3 illustrates a lamp for a vehicle, according to another embodiment of the present disclosure, in which a plurality of second mounting parts are provided; and

[0035] FIG. 4 illustrates a lamp for a vehicle including a heat sink device and a cooling fan, according to another embodiment of the present disclosure.

DETAILED DESCRIPTION

[0036] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to accompanying drawings.

[0037] Embodiments to be described below are embodiments appropriate to allow those skilled in the art to understand technical features of a lamp for a vehicle, e according to the present disclosure. However, the present disclosure or the features of the present disclosure is not limited to embodiments to be described below, and various modifications are possible within the technical scope of the present disclosure.

[0038] FIG. 1 is a view schematically illustrating the configuration of a lamp for a vehicle, according to an embodiment of the present disclosure, FIG. 2 schematically illustrates a lamp for a vehicle, according to an embodiment of the present disclosure, in which a bending device is formed on a board device, and FIG. 3 illustrates a lamp for a vehicle, according to another embodiment of the present disclosure, in which a plurality of second mounting parts are provided. FIG. 4 illustrates a lamp for a vehicle, which includes a heat sink device and a cooling fan, according to another embodiment of the present disclosure.

[0039] According to an embodiment of the present disclosure, a vehicle lamp 100 for a vehicle may include various types of lamps mounted in the vehicle. For example, according to an embodiment of the present disclosure, the vehicle lamp 100 may be an intelligent lamp to adjust the illuminating angle of the lamp or an on/off state of the light sources 310, when another vehicle is sensed in front, during driving, thereby preventing the glare of the another vehicle. For example, the vehicle lamp 100 may be a vehicle lamp using an ADB system. The following description will be made, by way of example, regarding the vehicle lamp 100 including a plurality of light sources 310 selectively turned on or turned off according to an embodiment of the present disclosure. However, the vehicle lamp 100 according to the present disclosure is not limited to the above case, and various types of lamp 100 for the vehicle may be applied.

[0040] Referring to FIGS. 1 and 4, according to an embodiment of the present disclosure, the vehicle lamp 100 may include a board device 200, a light source part 300, a light source controller 400, and a bending device 250.

[0041] The board device 200 includes a first mounting part 210 and a second mounting part 230 bent and extending from the first mounting part 210

[0042] In more detail, the board device 200 may be a printed circuit board (PCB) to mount the light source device 300 and the light source controller 400 on the PCB. The first mounting part 210 and the second mounting part 230 may be divided from each other on the board device 200, the second mounting part 230, which is integrally formed with the first mounting part 210, may be bent and extend from the first mounting part 210.

[0043] The board device 200 further includes the bending device 250. The bending device 250 may be formed at a portion at which the first mounting part 210 and the second mounting part 230 meet, and may be bent to form a specific angle between the first mounting part 210 and the second mounting part 230.

[0044] The light source device 300 is mounted on the first mounting part 210 and includes a plurality of light sources 310. The light source device 300 may be a light emitting diode (LED) serving as a semiconductor light emitting element, and a plurality of LEDs may be mounted on the PCB. For example, the vehicle lamp 100 according to an embodiment of the present disclosure may be an ADB type headlamp, or may be a matrix-type lamp which forms a dark zone in a specific area in front by selectively turning on or turning off the plurality of light sources 310. In this case, the plurality of light sources 310 may be disposed in the first mounting part 210 at predetermined distances, and even a circuit to drive the plurality of light sources 310 may be disposed together with the light sources 310.

[0045] The light source controller 400 includes a control device 410 which is mounted on the second mounting part 230 and electrically connected to the plurality of light sources 310 to control a current flowing through the plurality of light sources 310.

[0046] In more detail, an electrode and a circuit pattern are formed on a thin plate including copper (Cu) in the board device 200, and the LED serving as a light source and the control devices 410 may be disposed on the circuit pattern. The light source 310 may emit light by the current which is applied. In this case, the control devices 410 may control the flow of the current through the light source 310, such that some of the plurality of light sources 310 are turned on or turned off.

[0047] In addition, the first mounting part 210, the second mounting part 230, and the bending device 250 may be integrally formed

[0048] In detail, the first mounting part 210, the bending device 250, and the second mounting part 230 may be integrally formed to form a single board. The bending device 250 may have one end portion connected to the first mounting part 210 and an opposite end connected to the second mounting part 230, and may have a portion bent between the one end portion and the opposite end portion of the bending device 250. The second mounting part 230 may be bent and extend from the first mounting part 210 through the bending device 250. For example, the first mounting part 210, the second mounting part 230, and the bending device 250 may be formed by bending one board, or may be integrally formed, as plates including different materials are bonded to each other. In other words, the first mounting part 210, the second mounting part 230, and the bending device 250 may have a layer structure.

[0049] The first mounting part 210 and the second mounting part 230 may be formed to form a specific angle through such a bending device 250. Accordingly, the light source part 300 mounted on the first mounting part 210 may be spaced apart from the light source controller 400 mounted on the second mounting part 230. In other words, as the light source device 300 and the light source controller 400 are mounted through the single board, an additional board for the light source controller 400 is not required, and the light source device 300 may be spaced apart from the light source controller 400 by a specific distance. In this case, the angle of the bending device 250 may be an angle at which the first mounting part 210 and the second mounting part 230 may be appropriately disposed in consideration of the design specification of the vehicle lamp 100, the light source device 300, and the light source controller 400. FIGS. 2 and 4 illustrate that the angle of the bending device 250 is formed at about 90 degrees.

[0050] As described above, according to an embodiment of the present disclosure, interference between an area for mounting the light source device 300 and an area for mounting for the light source controller 400 may be minimized, as the first mounting part 210 and the second mounting part 230 are not placed on the same plate of the board device 200 by the bending device 250. Therefore, according to the present disclosure, a member necessary for shielding static electricity may be mounted on the second mounting part 230 for electromagnetic compatibility (EMC), and the transfer of heat from the light source device 300 to the light source controller 400 may be minimized. In addition, according to an embodiment of the present disclosure, since additional equipment is not required for the EMC and for blocking heat, the slim vehicle lamp 100 may be realized.

[0051] In detail, referring to FIGS. 2 and 3, a shielding cover 500 mounted on the second mounting part 230 to cover the light source controller 400 and provided to shield electromagnetic waves may be further included.

[0052] The shielding cover 500 may be provided to cover a device, such as the control device 410, which generates electromagnetic waves, mounted on the second mounting part 230, and may be mounted on the second mounting part 230. The shielding cover 500 may include a material having excellent permeability, and may cover the peripheral portion of the light source controller 400, such that a magnetic field flows through the outer surface of the shielding cover 500.

[0053] According to an embodiment, the vehicle lamp 100 may include a fixing member 320, which fixes the light source device 300, to the first mounting part 210, and a lens structure 330 which is disposed in front of the light source device 300. According to an embodiment of the present disclosure, the bending device 250 is formed in the board device 200, thereby minimizing the interface between the fixing member 320 and the lens structure 330, when the shielding cover 500 is placed. Therefore, the EMC may be improved.

[0054] For example, when the bending device 250 is not formed on the board device 200, the light source 310 and the control device 410 are disposed to be adjacent to each other. Accordingly, the shielding cover 500 may not be placed due to the fixing member 320 or the lens structure 330. According to the present disclosure, the bending device 250 is formed on the board device 200, and the light source device 300 is spaced apart from the light source controller 400 without increasing the size of the board device 200, thereby solving the above problem.

[0055] Meanwhile, referring to FIG. 2, the board device 200 may include a connection circuit pattern 270. The connection circuit pattern 270 may be formed in the bending device 250 and may be provided to electrically connect the plurality of light sources 310 provided in the light source device 300 to a plurality of control devices 410 provided in the light source controller 400.

[0056] In detail, the connection circuit pattern 270, serves as a portion of a circuit pattern formed of a thin plate including Cu and formed on the PCB, may be a circuit pattern to connect the light sources 310 and the control device 410. Conventionally, when the light source device 300 and the light source controller 400 are mounted on an additional board, an additional cable is placed at a connection part between boards for the electrical connection. Accordingly, the number of parts is increased, and an additional space is required. Meanwhile, according to an embodiment of the present disclosure, an integral-type board is used as the board device 200, the light source device 300 may be electrically connected to the light source controller 400 through the connection circuit pattern 270 formed on the board device 200. As described above, the connection circuit pattern 270 is formed, as a circuit pattern is formed by using a copper plate on the board. Accordingly, the connection circuit pattern 270 may be easily formed on the bending device 250 (see FIG. 2).

[0057] Meanwhile, referring to FIG. 1, the plurality of light sources 310 are connected to each other in series, and the plurality of control devices 410 may be connected to the plurality of light sources 310, respectively, in parallel to bypass the current flowing through the light source 310. A marked part (hatched part) as in illustrated in FIG. 1 indicates the flow of a current. In other words, FIG. 1 illustrates that the current flowing through the light source (LED) 310 is bypassed by the control device 410, such that the light sources 310 are individually turned on/turned off.

[0058] For example, the light source controller 400 may include a supply source to supply a current to the light source 310 and the plurality of control devices 410 electrically connected to each of the plurality of light sources 310. In this case, the control device 410 may bypass the current to control the plurality of light sources 310 to be individually turned on/off. For example, the control device 410 may include a field effect transistor (FET) to bypass a current flowing through the light source 310 by a switching operation. However, the control device 410 is not limited thereto.

[0059] Meanwhile, referring to FIG. 3, the plurality of bending devices 250 may be provided at edges of the first mounting part 210, and a plurality of second mounting portions 230 may be provided to correspond to the plurality of bending devices 250. In addition, a plurality of light source controllers 400 may be provided to correspond to the plurality of second mounting parts 230 so that the plurality of control devices 410 are distributed and mounted on the plurality of second mounting parts 230.

[0060] In detail, the board device 200 may be formed in the structure in which the plurality of second mounting parts 230 are provided above on the first mounting part 210. In this case, the plurality of second mounting parts 230 may extend from the edge of the first mounting part 210 and may be spaced apart from each other.

[0061] As described above, the plurality of second mounting parts 230 are appropriately distributed around the first mounting part 210, thereby preventing the connection circuit pattern 270, which is to connect the light source 310 to the control device 410, from being twisted. In detail, as the number of the light sources (LED) 310 and the number of integrated circuits mounted are increased, the plurality of connection circuit patterns 270 to connect the light sources 310 to the integrated circuits are twisted. Accordingly, all integrated circuits may not be mounted on one second mounting part 230. According to an embodiment of the present disclosure, as the plurality of second mounting parts 230 are provided around one first mounting part 210, the integrated circuits may be properly distributed and mounted.

[0062] For example, referring to FIG. 3, the second mounting part 230 may include second up-down mounting parts 231 bent and extending from an upper end portion and a lower end portion of the first mounting part 210, and second left-right mounting parts 232 bent and extending from side end portions of the first mounting part 210. In other words, the board device 200 may include two second up-down mounting parts 231 and two second left-right mounting parts 232 around the first mounting part 210. In this case, the up-down direction, and the left-right direction are determined based on a direction when the first mounting part 210 is viewed from right.

[0063] In addition, the light source controller 400 may include a first light source controller 401 mounted on the second up-down mounting part 231 and electrically connected to the light source device 300, and a second light source controller 402 mounted on the second left-right mounting devices 232 and electrically connected to the light source device 300.

[0064] In this case, the bending device 250 may include a first bending device 251 to connect the first mounting part 210 and the second up-down mounting part 231, and a second bending part 252 to connect the first mounting part 210 to the second left-right mounting part 232. In addition, the connection circuit pattern 270 may include a first pattern 271 to connect some light sources 310 to a first control device 411 of the first light source controller 401, and a second pattern 272 to connect remaining light sources 310 to a second control device 412 of the second light source controller 402. In addition, according to another embodiment of the present disclosure, a first shielding cover 510 to cover the first light source controller 401 and a second shielding cover 520 to cover the second light source controller 402 may be included.

[0065] As described above, according to another embodiment of the present disclosure, the connection circuit pattern 270 is divided into the first pattern 271 and the second pattern 272 for realizing. Accordingly, the connection circuit pattern 270 may be prevented from being twisted even when the number of integrated circuits (IC) and the light sources 310, which are mounted, is increased.

[0066] Meanwhile, the first mounting part 210 may include a metal material. For example, the first mounting part 210 may include a metal such as aluminum (Al) or copper (Cu). Accordingly, the first mounting part 210 may have excellent heat dissipation performance, thereby minimizing the transfer of heat generated from the light source device 300 to the light source controller 400. However, metal constituting the first mounting part 210 is not limited to the above metal.

[0067] The second mounting part 230 may include a glass fiber material. For example, the second mounting part 230 may include an FR-4 material formed by stacking glass fibers impregnated with epoxy resins in several layers. The FR-4 material may exhibit excellent price-performance to reduce cost, and may make it easy to form a multiple structure. However, the glass fiber material included in the second mounting part 230 is not limited to the FR-4 material, and various materials including glass fiber may be applied. In addition, the second mounting part 230 is not limited to a case of including glass fiber material, and may be modified with various materials depending on the configuration of the light source controller 400.

[0068] The second mounting part 230 may include a metal material. In other words, when the number of integrated circuits ICs constituting the light source controller 400 is increased, even the second mounting part 230 may include a metal material for heat dissipation of the integrated circuit. In this case, metals, such as aluminum and copper, which are advantageous to heat dissipation, may be variously applied to the metal material. In addition, various materials may be applied to the second mounting part 230 in addition to materials including a metal material and a glass fiber.

[0069] Meanwhile, referring to FIG. 4, the vehicle lamp 100 according to another embodiment of the present disclosure may further include a heat sink device 610 and a cooling fan 620.

[0070] The heat sink device 610 may be provided to make contact with the first mounting part 210 and the second mounting part 230, and may be provided to receive heat from the first mounting part 210 and the second mounting part 230. In addition, the cooling fan 620 may be installed on one side of the heat sink device 610 and may be provided to cool the heat sink device 610 by forming a flow of air.

[0071] In detail, according to another embodiment of the present disclosure, the vehicle lamp 100 may be provided such that the first mounting part 210 having the light source device 300 mounted thereon and the second mounting part 230 having the light source controller 400 mounted thereon may share one heat sink device 610. In other words, according to the present disclosure, the vehicle lamp 100 may be provided to dissipate heat from all the light source device 300 and the light source controller 400 by using one heat sink device 610. In addition, the cooling fan 620 is mounted at one side of the heat sink device 610 to additionally dissipate heat.

[0072] Therefore, according to the present disclosure, the whole size of the heat sink device 610 may be reduced, as compared to that heat sinks are individually mounted in the conventional light source device 300 and the conventional light source controller 400.

[0073] In this case, the cooling fan 620 may be mounted on a surface, which does not make contact with the board device 200, of one side surface of the heat sink device 610. For example, referring to FIG. 4, the cooling fan 620 may be mounted on a surface, which faces a direction opposite to the direction of the first mounting part 210, of the heat sink device 610.

[0074] In detail, the cooling fan 620 are mounted on a surface which is not in contact with the first mounting part 210 and the second mounting part 230, and may be coaxially aligned together with the first mounting part 210 and the heat sink device 610.

[0075] As described above, as the cooling fan 620, the heat sink device 610, and the first mounting part 210 are aligned in line with each other, the heat from the first mounting part 210 may be more effectively dissipated. Since the plurality of light sources 310 are provided in the first mounting part 210, the first mounting part 210 may emit a larger amount of heat that that of the second mounting part 230. Accordingly, as the cooling fan 620 is disposed to be more advantageous to the heat dissipation of the first mounting part 210. Accordingly, when one heat sink device 610 and one cooling fan 620 are provided, the board device 200 may be more effectively dissipate heat.

[0076] As described above, according to an embodiment of the present disclosure, the vehicle lamp includes the first mounting part and the second mounting part forming a specific angle on the board device by the bending device formed on the board device, thereby minimizing the interface between the area for mounting the light source device and the area for mounting the light source controller.

[0077] Therefore, according to an embodiment of the present disclosure, the integral-board form is maintained in which the light source device and the light source controller are mounted on one board, and the light source device is spaced apart from the light source controller. Accordingly, the member necessary for shielding may be mounted on the second mounting part, thereby improving the EMC.

[0078] In addition, according to an embodiment of the present disclosure, the light source device and the light source controller may be spaced apart from each other to solve the problem of transferring heat from the light source to the light source controller.

[0079] In addition, according to an embodiment of the present disclosure, since additional equipment is not required for the EMC and for blocking heat, the slim vehicle lamp may be realized.

[0080] Hereinabove, although the present disclosure has been described with reference to exemplary embodiments and the accompanying drawings, the present disclosure is not limited thereto, but may be variously modified and altered by those skilled in the art to which the present disclosure pertains without departing from the spirit and scope of the present disclosure claimed in the following claims.