JP2012119243A - Led standard module, and vehicular lamp having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED standard module capable of attaining cost reduction by standardization and simple exchange.SOLUTION: An LED standard module 10 is configured by attaching an LED board 14 configured by assembling a heat sink 13 in a socket holder 12, and mounting an LED and integrally assembling a control circuit, to the socket holder 12 in a state that the LED board 14 contacts the heat sink 13. Further, a light control lens 18 for controlling light emitted from the LED is arranged on the LED board 14, a plurality of heat radiating fins 13a exposed from the socket holder 12 to the outside are formed on the heat sink 13, and a heat conductive member 15 is intervened between the LED board 14 and the heat sink 13.

Description

  The present invention relates to an LED standard module using an LED as a light source and a vehicular lamp provided with the LED standard module.

  In recent years, LEDs having high luminance, low power consumption, and high durability tend to be used as light sources for vehicle lamps such as headlamps and tail lamps. In a vehicular lamp using an LED as a light source, an LED module, a bracket for holding the LED module, and light emitted from the LED are reflected in a lamp chamber defined by a housing and a lens covering the opening. Some of them are configured to accommodate a reflector or the like (see, for example, Patent Document 1).

  An LED module as a light source of such a vehicular lamp is configured by connecting and arranging a plurality of LEDs at a predetermined interval between a pair of thin metal plate bus bars arranged in parallel to each other. In such an LED module, when a driving voltage is applied between a pair of bus bars, the driving voltage is supplied to each LED through the connection lead, and each LED emits light.

JP 2010-192320 A

  However, in the case of a conventional vehicle lamp using an LED module as a light source, if one of the LEDs fails or the lens of the lamp is damaged, the entire lamp is replaced with a new one. There was a problem that it was necessary to do so, it was very uneconomical, and the financial burden on the user was great.

  The present invention has been made in view of the above problems, and the object of the present invention is to easily operate only the LED standard module without replacing the whole and the LED standard module capable of cost reduction and simple replacement by standardization. An object of the present invention is to provide a vehicular lamp that can be replaced with good quality.

  In order to achieve the above object, according to the first aspect of the present invention, a heat sink is incorporated into a socket holder, an LED is mounted on the socket holder in a state where the LED is mounted and a control circuit is integrally incorporated in contact with the heat sink. The LED standard module is configured by mounting.

  According to a second aspect of the present invention, in the first aspect of the present invention, a light beam control lens for controlling a light beam emitted from the LED is provided on the LED substrate.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the heat sink includes a plurality of radiating fins exposed to the outside from the socket holder.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, a heat conductive member is interposed between the LED substrate and the heat sink.

  A vehicular lamp according to a fifth aspect includes the LED standard module according to any one of the first to fourth aspects.

  According to the first aspect of the present invention, the LED standard module is configured by mounting the LED board in which the LED is mounted and the control circuit is integrally incorporated in the socket holder in which the heat sink for heat dissipation is incorporated. The cost can be reduced by standardizing the LED standard module, and the LED standard module can be easily replaced with good workability.

  According to invention of Claim 2, a desired light distribution pattern can be obtained by controlling the light ray radiate | emitted from LED by the light ray control lens provided in the LED board.

  According to the invention described in claim 3, since the heat generated in the LED is efficiently radiated from the radiation fins formed in the heat sink, the temperature rise of the LED is suppressed, and the LED has high luminous efficiency and durability. Is done.

  According to the fourth aspect of the present invention, the heat generated in the LED is efficiently transmitted from the LED substrate to the heat sink through the heat conducting member, and is radiated to the outside by the heat sink. It is done.

  According to the fifth aspect of the present invention, when a failure occurs in the LED, it is economical because only the LED standard module needs to be replaced with a new one without replacing the entire lamp. Economic burden is reduced.

1 is a front view of a vehicular lamp according to the present invention. It is the sectional view on the AA line of FIG. It is a front view of the LED standard module which concerns on this invention. It is a side view of the LED standard module which concerns on this invention. It is a top view of the LED standard module which concerns on this invention. It is a bottom view of the LED standard module which concerns on this invention. It is a rear view of the LED standard module which concerns on this invention. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a front view of the LED board of the LED standard module which concerns on this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a front view of a vehicular lamp according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. Since the configuration is the same on the left and right, only the right vehicle lamp (rear combination lamp) 1 will be described below.

  The vehicular lamp 1 according to the present embodiment includes a bulb 5 and 6 that are light sources and an LED standard module 10 according to the present invention in a lamp chamber 4 defined by a housing 2 and an outer lens 3 that covers an opening of the housing 2. An inner lens 7 that is cut to distribute light emitted from the LED standard module 10, a reflector 8 that reflects light that has passed through the inner lens 7, and an extension that covers a gap between the reflector 8 and the housing 2. 9 etc. are accommodated. Here, the bulbs 5 and 6 are detachably attached to the housing 2, and the LED standard module 10 is detachably attached to the reflector 8. The attachment portion of the LED standard module 10 to the reflector 8 is sealed by a seal ring 11 fitted to the outer periphery of the LED standard module 10.

  Next, details of the configuration of the LED standard module 10 according to the present invention will be described with reference to FIGS.

  3 is a front view of the LED standard module according to the present invention, FIG. 4 is a side view thereof, FIG. 5 is a plan view thereof, FIG. 6 is a bottom view thereof, FIG. 7 is a rear view thereof, and FIG. FIG. 9 is a front view of the LED substrate of the LED standard module.

  The LED standard module 10 is configured by incorporating an aluminum heat sink 13 into a socket holder 12 integrally formed of resin and attaching a disk-shaped LED substrate 14 to the socket holder 12 in contact with the heat sink 13. ing. As shown in FIG. 8, a heat conductive member 15 such as a thin heat conductive sheet having high heat conductivity is interposed between the LED substrate 14 and the heat sink 13.

  The socket holder 12 includes a circular block-shaped main body portion 12A and a rectangular cylindrical socket 12B protruding integrally from the main body portion 12A, and the heat sink 13 is incorporated in the main body portion 12A. The seal ring 11 is fitted on the outer periphery of the portion 12A. And four engagement claws 12a are integrally formed in the outer periphery of the main-body part 12A.

  Further, as shown in FIGS. 7 and 8, a rectangular hole 12b is formed on the bottom surface of the main body 12A of the socket holder 12, and a plurality of heat radiations integrally formed with the heat sink 13 are formed from the rectangular hole 12b. The fin 13a is exposed to the outside.

  As shown in FIG. 9, six LEDs 16 as light sources are mounted at the center of the LED substrate 14 and a plurality of control circuits 17 for driving and controlling these LEDs 16 are incorporated. Are covered by a light beam control lens 18 for controlling the light emitted from them. Three terminals 19 are provided at the end of the LED substrate 14, and these terminals 19 are electrically connected to the LEDs 16 via the control circuit 17. Here, as shown in FIGS. 7 and 8, the three terminals 19 pass through the main body 12A of the socket holder 12 and face the inside of the socket 12B.

  Thus, the LED standard module 10 configured as described above is inserted into the mounting hole 8a formed at the center of the reflector 8 of the vehicular lamp 1 from the back side as shown in FIG. Is turned to engage the four engaging claws 12a (see FIG. 3) formed on the outer periphery of the socket holder 12 with the two engaging protrusions 8b formed on the inner periphery of the mounting hole 8a of the reflector 8. 8 is detachably attached. When the LED standard module 10 is attached to the reflector 8 in this way, the seal ring 11 fitted around the outer periphery of the main body 12A of the socket holder 12 protrudes around the attachment hole 8a on the back surface of the reflector 8. When the LED standard module 10 and the reflector 8 are in close contact with each other, a high sealing performance is secured between the LED standard module 10 and the reflector 8, and water or the like can be reliably prevented from entering the lamp chamber 4 from the mounting portion of the LED standard module 10. Can be removed.

  By the way, although not shown, a power plug is attached to an end of a power cord extending from a battery mounted on the vehicle, and a rectangular cylindrical shape formed on the socket holder 12 of the LED standard module 10 attached to the reflector 8. By inserting the power plug into the socket 12B, the LED 16 (see FIG. 9) as the light source of the LED standard module 10 is electrically connected to the battery via the control circuit 17, the terminal 19, and the power cord.

  Therefore, when the driver supplies power to the LED standard module 10 from the battery by operating the switch, the current from the battery is supplied to the LED 16 via the power cord, the terminal 19 of the LED standard module 10 and the control circuit 17, so that each LED 16 is activated. Is emitted. Then, the light emitted from each LED 16 is first controlled by passing through the light beam control lens 18, and the light distribution is further controlled by passing through the inner lens 7, and then reflected by the reflector 8. The light passes through the outer lens 3 and exits toward the rear of the vehicle (downward in FIG. 2). Here, since the light emitted from the LED 16 is controlled by the light beam control lens 18 provided on the LED board 14 and the inner lens 7 provided on the vehicular lamp 1, a desired light distribution pattern is obtained.

  As described above, when each of the six LEDs 16 emits light, the LED 16 generates heat, but the heat is conducted from the LED board 14 to the heat sink 13 through the heat conducting member 15, and is radiated to the outside from the plurality of heat radiation fins 13 a of the heat sink 13. Is done. As described above, the heat generated in the LED 16 is efficiently transmitted from the LED substrate 14 to the heat sink 13 via the heat conducting member 15, and is efficiently radiated to the outside from the heat radiation fins 13a formed on the heat sink 13. The rise is suppressed, and high luminous efficiency and durability are ensured for the LED 16.

  As described above, the LED standard module 10 according to the present invention includes the LED board 14 in which the LED 16 is mounted and the control circuit 17 is integrally incorporated in the socket holder 12 in which the heat sink 13 for heat dissipation is incorporated. Since the LED standard module 10 is standardized, the cost can be reduced by the standardization, and the LED standard module 10 can be easily replaced with good workability. For example, in the case where one of the LEDs 16 of the LED standard module 10 is broken, it is economical to replace only the LED standard module 10 with a new one without replacing the entire vehicle lamp 1. The user's financial burden is reduced.

  Although the present invention has been described with respect to the embodiment in which the present invention is applied to the rear combination valve and the LED standard module provided therein, the present invention is not limited to other vehicle lamps such as a headlamp and the LED provided therein. Of course, the same applies to the standard module.

1 Vehicle lamp (rear combination lamp)
2 Housing 3 Outer lens 4 Lamp chamber 5, 6 Bulb 7 Inner lens 8 Reflector 8a Reflector mounting hole 8b Reflector engagement protrusion 8c Reflector tube 9 Extension 10 LED standard module 11 Seal ring 12 Socket holder 12A Socket holder body 12B Socket of socket holder 12a Engagement claw of socket holder 12b Rectangular hole of socket holder 13 Heat sink 13a Heat sink fin of heat sink 14 LED substrate 15 Thermal conduction member 16 LED
17 Control Circuit 18 Light Control Lens 19 Terminal

Claims (5)

  A standard LED module comprising: a heat sink incorporated in a socket holder; an LED board on which an LED is mounted and a control circuit is integrally incorporated; and the LED holder is attached to the socket holder in contact with the heat sink.   2. The LED standard module according to claim 1, wherein a light beam control lens for controlling a light beam emitted from the LED is provided on the LED substrate.   The LED standard module according to claim 1, wherein a plurality of heat radiation fins exposed to the outside from the socket holder are formed on the heat sink.   The LED standard module according to claim 1, wherein a heat conductive member is interposed between the LED substrate and the heat sink. A vehicle lamp comprising the LED standard module according to claim 1.

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