JP2013203247A - Motorcycle led headlight device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motorcycle LED headlight device capable of efficiently cooling a light unit while the light unit is supported aimably in a predetermined casing.SOLUTION: A motorcycle LED headlight device has: a light unit 50 including an LED light source 58, an LED substrate 57 for adjusting light quantity of the light source, a heat sink 54 for cooling the light source, a light unit casing 53 for containing the light source and the LED substrate, and a light unit lens 55 mounted on the casing for transmitting the radiation light of the light source at the front side of a vehicle body; a housing 60 for containing the light unit; a support part 51 for supporting the light unit aimably with respect to the housing; and an outer lens 65 mounted on the light unit at an opening of the housing at a front portion of the vehicle body. The heat sink is located in a space near the lower portion in the housing.

Description

  The present invention relates to a motorcycle LED headlight device, and more particularly, to a motorcycle LED headlight device having a heat sink for cooling an LED substrate.

  2. Description of the Related Art Conventionally, an LED headlight device is known that is disposed at the front of a vehicle using a light emitting diode (LED) as a light source.

  In Patent Document 1, a substrate on which an LED light source is mounted is disposed inside a housing so that the mounting surface of the LED light source is directed upward of the vehicle body, and the housing is fixed to the vehicle body side, and is generated by the LED light source. A motorcycle LED headlight device is disclosed in which a heat sink for cooling heat is disposed at the rear of the housing.

JP 2010-1225897 A

  However, in the technique described in Patent Document 1, since the inside of the case is a sealed space, heat generated from the LED or the like is likely to be trapped in the case, and thus a device for efficiently cooling the LED headlight device is required. Moreover, the aiming mechanism for adjusting the optical axis of the LED headlight device has not been studied.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and adopt a structure in which a light unit is supported in a predetermined case so as to be aiming freely, and can efficiently cool the light unit. It is to provide a light device.

  To achieve the above object, the present invention provides an LED light source (46, 58), a control means (45, 57) for adjusting the amount of light of the LED light source (46, 58), and the LED light source (46, 58). ), A light unit case (43, 53) for housing the LED light source (46, 58) and the control means (45, 57), and the light unit case (43, 53). ) And a light unit (30, 50) including a light unit lens (32, 55) that transmits light emitted from the LED light source (46, 58) on the front side of the vehicle body, and the light unit (30, 50). ) And an outer lens (3) attached to the opening of the housing (36, 60) in front of the light unit (30, 50). , 65), the light unit (30, 50) aims at the light unit (30, 50) relative to the housing (36, 60). A support part (41, 51) for freely supporting is provided on the upper part of the light unit (30, 50), and the cooling means (33, 54) is provided in a lower space in the housing (36, 60). There is a first feature.

  Further, a lower breathing hole (37C, 37E, 63) is provided at a position near the lower side of the housing (36, 60), and an upper breathing hole (61) is provided at a position near the upper side of the housing (60). There is a second feature.

  The third feature is that the lower breathing holes (37C, 37E, 63) are provided on the bottom surface of the housing (60).

  The fourth feature is that a waterproof and moisture-permeable material (62, 64) is attached to each of the lower breathing hole (63) and the upper breathing hole (61).

  A fifth feature is that the lower breathing hole (63) is disposed facing the intake passage (38, 72) for supplying air to the air cleaner box (18) of the vehicle.

  Furthermore, the intake passage (72) has a sixth feature in that a dustproof member (73) is provided at a position upstream of the portion facing the lower breathing hole (63).

  According to the first feature, the light unit includes a support portion that supports the light unit so as to be aiming freely with respect to the housing, and a cooling unit is provided in a space closer to the lower side in the housing. The cooling means is located in the lower space where the temperature is lower than the upper position in the housing, so that the LED substrate can be efficiently cooled while the light unit is supported so as to be aiming. In particular, since the aiming support portion is provided at the upper portion of the light unit, the cooling means provided at the lower portion can be easily designed, and thus a good cooling structure can be employed. Further, since the cooling means including a heat sink can be visually recognized from the outside through the outer lens, it is possible to appeal that the headlight uses the LED. Furthermore, since the support part is attached to the upper part of the light unit case, the volume of the cooling means at the lower part of the case can be increased to improve the cooling effect.

  According to the second feature, the lower breathing hole is provided at the lower position of the housing, and the upper breathing hole is provided at the upper position of the housing, so that the outside air introduced from the lower breathing hole can be reduced. While being easy to apply to the cooling means, the cooling air can easily escape from the upper breathing hole, and the cooling effect of the light unit can be further enhanced.

  According to the third feature, since the lower breathing hole is provided on the bottom surface of the housing, even if moisture enters the housing, it can be easily removed.

  According to the fourth feature, since the waterproof and moisture-permeable material is attached to each of the lower breathing hole and the upper breathing hole, the waterproof property can be improved while maintaining the breathability of the breathing hole.

  According to the fifth feature, since the lower breathing hole is arranged facing the intake passage for supplying air to the air cleaner box of the vehicle, the flow of outside air introduced into the air cleaner box is further utilized. It becomes possible to enhance the cooling effect.

  According to the sixth feature, in the intake passage, the dust-proof member is provided at a position upstream of the portion facing the lower breathing hole, so that dust and the like are prevented from entering from the lower breathing hole. be able to.

1 is a side view of a motorcycle to which an LED headlight device according to an embodiment of the present invention is applied. It is an expansion perspective view around a LED headlight device. It is an enlarged front view around the LED headlight device. It is a perspective view of a light unit. It is a perspective view of the light unit which concerns on the modification of this embodiment. It is a side view which shows the optical axis adjustment mechanism of a light unit. It is sectional drawing of the LED headlight apparatus provided with the light unit.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of a motorcycle 1 to which an LED headlight device 4 according to an embodiment of the present invention is applied. A steering stem (not shown) is pivotally supported by the head pipe 14 provided at the front end of the main frame 19 so as to be rotatable. A pair of left and right front forks 5 that rotatably support the front wheel WF are attached to the steering stem, and the front wheels WF can be steered by a pair of left and right handlebars 15 attached to the upper end of the front fork 5. It is said that. A swing arm 13 that rotatably supports a rear wheel WR as a drive wheel is rotatably supported by a pivot shaft 10 at a lower rear portion of the main frame 19. A rear cushion 11 is provided between the swing arm 13 and the main frame 19 so as to connect each other via a link mechanism.

  An engine 9 is disposed in front of the pivot shaft 10 and below the main frame 19. An intake pipe 16 provided with an injector 27 of a fuel injection device and a throttle body 26 having a throttle valve is attached to an upper portion of the engine 9, and an air cleaner box 18 is connected to the upper portion thereof. An exhaust pipe 8 that guides the combustion gas of the engine 9 to a muffler 25 disposed at the rear end of the vehicle body is attached to the front side of the engine 9. The air cleaner box 18 is provided with a suction passage 38 as an air duct for sucking outside air from the front side of the front cowl 2.

  A front cowl 2 having a windproof screen 3 is disposed on the front side of the head pipe 14, and a motorcycle LED headlight device 4 according to the present invention is attached to the front portion of the front cowl 2. A front fender 6 is disposed above the front wheel WF, a pair of left and right center cowls 7 are disposed on the side of the engine 9, and a pair of left and right under cowls 12 are disposed below the front fender 6. Has been.

  A fuel tank 17 is disposed on the main frame 19. A seat 22 and a seat cowl 24 are attached to a seat frame 23 that extends rearward and upward from the main frame 19. A battery 20 and an ECU 21 as an engine control device are disposed below the seat 22.

FIG. 2 is an enlarged perspective view around the LED headlight device 4. 3 is an enlarged front view around the LED headlight device 4, and FIG. 4 is a perspective view of the light unit.
The LED headlight device 4 is arranged symmetrically with respect to the vehicle body center line O. The LED headlight device 4 is configured such that the light unit 30 is housed in a housing 36 provided with an opening on the front side of the vehicle body, and an outer lens 31 is attached so as to close the opening of the housing 36. 2 and 3 show a state where only the outer lens 31 on the left side in the vehicle width direction is removed. Hereinafter, the description will be given mainly focusing on the left light unit 30.

  The light unit 30 has a two-lamp configuration in which two LED light sources 46C and 46E on the inner and outer sides in the vehicle width direction are provided with respect to a single light unit case 43.

  The inner lamp reflects the LED substrate 45C as a control means to which the LED light source 46C is attached, the light unit lens 32C covering the opening of the light unit case 43, and the light emitted from the LED light source 46C to the front of the vehicle body. A reflector 48 </ b> C and a heat sink 33 </ b> C serving as a cooling unit positioned below the light unit case 43 are provided. On the other hand, the outer lamp includes an LED substrate 45E on which an LED light source 46E is attached, a light unit lens 32E that covers the opening of the light unit case 43, a reflector 48E, and a heat sink 33E.

  According to this configuration, since the heat sinks 33C and 33E are located in the lower space where the temperature is lower than the upper position in the housing, the LED board 45C and the LED substrate 45C are supported while supporting the light unit 30 so as to be aiming. It becomes possible to cool 45E efficiently. Moreover, since the heat sinks 33C and 33E can be visually recognized from the outside through the outer lens 31, it is possible to appeal that the headlights use the LED light source.

  The light unit case 43 is suspended from the housing 36 by a support portion 41 provided at an upper portion thereof, and is configured to be capable of adjusting the optical axis up and down around an axis K passing through the shaft hole 42. . The intake passage 38 connected to the air cleaner box 18 is configured such that its intake port is located below the bottom surface of the housing 36.

  Lower breathing holes 37 </ b> C and 37 </ b> E communicating with the inside of the housing 36 are formed on the bottom surface of the housing 36. According to this configuration, outside air passing through the intake passage 38 disposed facing the bottom surface of the housing 36 in which the lower breathing holes 37C and 37E are provided enters the housing 36 from the lower breathing holes 37C and 37E. When the heat sinks 33C and 33E are introduced, the cooling effect of the LED substrates 45C and 45E can be further enhanced. Further, since the lower breathing holes 37C and 37E are formed on the bottom surface of the housing 36, even if moisture enters the inside of the housing 36, it can be easily removed.

  FIG. 5 is a perspective view of a light unit 50 according to a modification of the present embodiment. 6 is a side view showing an optical axis adjusting mechanism of the light unit 50, and FIG. 7 is a sectional view of the LED headlight device 66 provided with the light unit 50. As shown in FIG. The same reference numerals as those described above denote the same or equivalent parts. The LED headlight device 66 according to the present modification is configured by housing the light unit 50 in a housing 60 and covering the opening of the housing 60 on the vehicle body front side with an outer lens 35.

  The one-lamp type light unit 50 according to this modification includes an LED substrate 57 as a control unit to which the LED light source 58 is attached, a light unit lens 55 that covers the opening of the light unit case 53, and irradiation of the LED light source 58. A reflector 59 that reflects light toward the front of the vehicle body and a heat sink 54 as a cooling means positioned below the light unit case 53 are provided. The light unit lens 55 is fixed to the light unit case 53 by a mounting screw 49 from below the vehicle body.

  The light unit case 53 is configured to be slidable with respect to the housing 60 by a support portion 51 provided on the upper portion thereof so that the optical axis can be adjusted up and down. The support portion 51 is pivotally supported on the ceiling portion of the housing 60 by a bolt 56 that passes through the shaft hole 52. An aiming bolt 69 having a threaded portion 70 is screwed into the aiming screw portion 53 at the upper rear end of the light unit case 53. As a result, the light unit 50 swings up and down (aiming) about the bolt 56 in accordance with the operation of the aiming bolt 69 and can adjust the optical axis. A rubber seal 71 is provided between the aiming bolt 69 and the housing 60 to prevent water and the like from entering.

  The intake passage 72 connected to the air cleaner box 18 is configured such that the intake port is located below the bottom surface of the housing 60. A lower breathing hole 63 communicating with the inside of the housing 60 is formed on the bottom surface of the housing 60. Further, an upper breathing hole 61 is formed in the upper portion of the side wall of the housing 60 on the vehicle body rear side. According to this configuration, the outside air that passes through the intake passage 72 disposed facing the bottom surface of the housing 60 provided with the lower breathing hole 63 is introduced into the housing 60 from the lower breathing hole 63 and is heat sink. 54 and the outside air is discharged from the upper breathing hole 61, so that the introduction of the outside air is performed more smoothly, and the cooling effect of the LED substrate 57 can be further enhanced.

  In this modification, waterproof breathable materials 64 and 62 are attached to the lower breathing hole 63 and the upper breathing hole 61, respectively, and the waterproofness is improved while maintaining the breathability of the breathing holes 61 and 63. be able to.

  Further, a dustproof net 72 as a dustproof member is provided at the intake port of the intake passage 72. Thus, by providing a dustproof member upstream of the lower breathing hole 63, dust and the like are prevented from entering from the lower breathing hole 63, and the engagement convex portion 67 between the housing 63 and the outer lens 65 is formed in the vehicle body. It is possible to improve the appearance by preventing the viewer from seeing from the front.

  The structure of the light unit, the position and structure of the LED substrate, the shape and structure of the reflector, the position and angle of the optical axis adjustment axis of the light unit are not limited to the above embodiment, and various changes are possible. . The LED headlight device according to the present invention is not limited to a motorcycle, and can be applied to various vehicles such as a saddle riding type three / four-wheeled vehicle.

  DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 2 ... Front cowl, 4,66 ... LED headlight device, 30, 50 ... Light unit, 31, 65 ... Outer lens, 32, 55 ... Light unit lens, 33, 54 ... Heat sink (cooling means), 36, 60 ... housing, 37C, 37E, 63 ... lower breathing hole, 38, 72 ... intake passage, 41, 51 ... support part, 43, 53 ... light unit case, 45, 57 ... LED substrate (control means), 46, 58 ... LED light source, 61 ... upper breathing hole, 62, 64 ... waterproof and moisture-permeable material, 73 ... dust-proof net (dust-proof member)

Claims (6)

An LED light source (46, 58), a control means (45, 57) for adjusting the light quantity of the LED light source (46, 58), and a cooling means (33, 54) for cooling the LED light source (46, 58). A light unit case (43, 53) for housing the LED light source (46, 58) and the control means (45, 57), and the LED light source attached to the light unit case (43, 53) on the front side of the vehicle body A light unit (30, 50) including a light unit lens (32, 55) that transmits the irradiation light of (46, 58);
A housing (36, 60) for accommodating the light unit (30, 50);
In the motorcycle LED headlight device (4, 66) having an outer lens (31, 65) attached to the opening of the housing (36, 60) in front of the vehicle body of the light unit (30, 50),
The light unit (30, 50) has a support portion (41, 51) for supporting the light unit (30, 50) in a freely aiming manner with respect to the housing (36, 60). At the top of the
The LED headlight device for a motorcycle, wherein the cooling means (33, 54) is provided in a lower space in the housing (36, 60).   A lower breathing hole (37C, 37E, 63) is provided at a position near the lower side of the housing (36, 60), and an upper breathing hole (61) is provided at a position near the upper side of the housing (60). The LED headlight device for a motorcycle according to claim 1, wherein the LED headlight device is for a motorcycle.   The LED headlight device for a motorcycle according to claim 2, wherein the lower breathing hole (37C, 37E, 63) is provided on a bottom surface of the housing (60).   The motorcycle LED head according to claim 2 or 3, wherein a waterproof breathable material (62, 64) is attached to each of the lower breathing hole (63) and the upper breathing hole (61). Light equipment.   5. The lower breathing hole (63) is arranged facing an intake passage (38, 72) for supplying air to a vehicle air cleaner box (18). The LED headlight device for motorcycles described in 1.   6. The automatic according to claim 5, wherein a dustproof member is provided at a position upstream of a portion of the intake passage that faces the lower breathing hole. LED headlight device for motorcycles.