JP2011173504A - Headlight device for vehicle - Google Patents

Abstract

A power adjustment device installed in a headlight unit can be suitably cooled and downsized.
A headlight unit is disposed at a front end of a front cover covering a front portion of a vehicle and includes a first light emitter and a second light emitter, and a power adjusting device for supplying predetermined power to the light emitter. The front cover 24 is formed with an intake port 29 adjacent to the headlight unit 28, and an intake passage 30 is connected to the intake port. The headlight unit 28 is installed on the side wall 40 of the headlight housing 33, and an exposed portion 37A from the headlight unit 28 is disposed facing the internal space 30A of the intake passage 30.
[Selection] Figure 5

Description

  The present invention relates to a structure of a vehicle headlight arranged in a vehicle.

  Conventionally, as disclosed in Patent Document 1, a headlight unit having a headlight bulb inside and a headlight case covering the headlight unit are provided, and an intake port and an exhaust port are provided in the headlight case. There is known a headlight device in which air introduced from an intake port and discharged from an exhaust port cools the headlight unit.

JP 2004-82851 A

  Incidentally, in recent years, a high-intensity discharge lamp (HID) or a light-emitting diode (LED) may be used as a light emitter in a headlight unit disposed in a vehicle. When such a light emitter is used, a power adjustment device including an electrical element such as a capacitor or a resistor is provided to adjust the input voltage to a predetermined current and voltage. This power adjustment device is generally arranged inside the headlight unit in order to facilitate the assembly of the headlight unit to the vehicle body.

  However, since the power adjustment device generates heat when adjusting the power, the power adjustment device itself may be overheated. Further, particularly when HID is used as a light emitter, the power adjustment device may be affected by heat radiation from the HID.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle headlight device that can be reduced in size by suitably cooling a power adjustment device installed in a headlight unit.

  The present invention is a vehicle headlight device that includes a headlight unit that is disposed at a front end of a front cover that covers a front portion of the vehicle and includes a light emitter, and a power adjustment device that supplies predetermined power to the light emitter. An air inlet is formed in the front cover adjacent to the headlight unit, and an air intake passage is connected to the air inlet. The power adjustment device is installed on the side wall of the headlight unit and at least one The portion is arranged facing the internal space of the intake passage.

  According to the present invention, since at least a part of the power adjustment device is disposed facing the internal space of the intake passage, the power adjustment device can be suitably cooled by the traveling wind flowing in the internal space of the intake passage. Conventionally, the surface area of the power adjustment device has been set large in order to promote heat dissipation. However, since the cooling performance of the power adjustment device is improved by configuring as described above, the power adjustment device can be downsized.

1 is a left side view showing a motorcycle to which an embodiment of a vehicle headlight device according to the present invention is applied. The partial perspective view which shows the front part of the motorcycle of FIG. 1 from the left front. The partial perspective view which abbreviate | omits a part of front cover in the motorcycle of FIG. 2, and abbreviate | omits a fuel tank. The left view which shows the headlight apparatus of FIG. Sectional drawing which follows the VV line of FIG.

  The best mode for carrying out the present invention will be described below with reference to the drawings. However, the present invention is not limited to these embodiments. FIG. 1 is a left side view showing a motorcycle to which an embodiment of a vehicle headlight device according to the present invention is applied. In the present embodiment, expressions such as up / down, left / right, and front / rear are based on the driver when riding the vehicle.

  A motorcycle 10 shown in FIG. 1 is a so-called sports-type vehicle in which a vehicle front side is covered with an exterior cover (described later). In the motorcycle 10, a vehicle body frame 11 extending in the front-rear direction is disposed substantially in the center of the vehicle, and a head pipe 12 is provided at the front end thereof. A steering shaft (not shown) is pivotally supported on the head pipe 12 so as to be rotatable to the left and right, and a front wheel 13 is suspended from the steering shaft via a pair of left and right front forks 9. Above the head pipe 12, a handle 14 is connected to the steering shaft so as to rotate together, and the front wheel 13 can be rotated left and right by steering the handle 14. A fuel tank 15 is disposed above the body frame 11.

  An engine 16 is disposed in front of and below the body frame 11, and an air cleaner 17 is connected to the upper side of the engine 16 and below the fuel tank 15 via an intake pipe 18. Outside air is introduced into the air cleaner 17 from an intake passage 30 described later. Outside air introduced from the intake passage 30 is purified in the air cleaner 17 and supplied to the engine 16. Further, exhaust gas from the engine 16 is discharged to the rear of the vehicle by an exhaust pipe 19 connected to the front portion of the engine 16 and extending rearward, and a silencer 20 connected to the rear end of the exhaust pipe 19.

  A front end of the swing arm 21 is swingably connected to the lower rear portion of the body frame 11. A rear wheel 22 is rotatably supported at the rear end of the swing arm 21. The power of the engine 16 is transmitted to the rear wheel 22 by a drive chain 23 or the like.

  The exterior cover is disposed in front of the body frame 11 and covers a front cover 24 that covers the front of the vehicle, a side cover 25 that covers the side of the vehicle, a lower cover 26 that covers the bottom of the vehicle, and an engine side cover that covers the side of the engine 16. 27. As shown in FIG. 2, a headlight unit 28 is disposed at the front end of the front cover 24, and an intake port 29 is formed adjacent to the side of the headlight unit 28.

  As shown in FIG. 3, the intake passage 30 is disposed inside the front cover 24. The intake passage 30 is connected to the rear portion of the intake port 29 and extends rearward. The rear end of the intake passage 30 is connected to an opening 31 formed in the vehicle body frame 11. The air cleaner 17 is connected to the rear end of the opening 31. As a result, outside air sucked from the intake port 29 when the vehicle travels is introduced into the air cleaner 17 through the intake passage 30 and the opening 31, and is efficiently supplied from the air cleaner 17 to the engine 16 via the intake pipe 18. .

  Here, as shown in FIGS. 2 and 3, the air inlet 29 is provided with a foreign matter intrusion prevention plate 39 as foreign matter intrusion prevention means for preventing foreign matter from entering.

  As shown in FIG. 4, the headlight unit 28 is configured by fitting a lens 32 and a headlight housing 33 back and forth. In the headlight unit 28, the first light emitter 34 is housed on the lower side, and the second light emitter 35 is housed on the upper side. The first light emitter 34 and the second light emitter 35 are a high-intensity discharge lamp (HID) or a light emitting diode (LED).

  As shown in FIG. 5, a substantially cup-shaped reflector 36 that reflects light emitted from the first light emitter 34 and the second light emitter 35 is disposed in the headlight unit 28. More specifically, the reflector 36 is arranged such that the first light emitter 34 and the second light emitter 35 are located in the center of the cup shape in the assembled state.

  As shown in FIGS. 4 and 5, the headlight unit 28 and a power adjustment device 37 that supplies predetermined power to the first light emitter 34 and the second light emitter 35 of the headlight unit 28, A headlight device 38 is configured. The power adjustment device 37 includes an electrical element such as a capacitor or a resistor. The power adjustment device 37 is fitted in a fitting hole 41 formed in the side wall 40 of the headlight housing 33 with a part thereof exposed to the outside and the remaining portion accommodated in the headlight housing 33. Installed on the side wall 40. A storage portion 37 </ b> B in the headlight housing 33 in the power adjustment device 37 is provided to face the reflector 36.

  The power adjustment device 37 is disposed such that at least a part, that is, an exposed portion 37A exposed from the side wall 40 faces the internal space 30A of the intake passage 30 disposed adjacent to the power adjustment device 37. That is, the exposed portion 37 </ b> A of the power adjustment device 37 is inserted through the insertion hole 43 formed in the side wall 42 of the intake passage 30 facing the power adjustment device 37 and is disposed facing the internal space 30 </ b> A of the intake passage 30. Is done. As a result, the traveling wind A flowing in the internal space 30A of the intake passage 30 contacts the exposed portion 37A of the power adjusting device 37, and cools the exposed portion 37A.

  Furthermore, a cooling fin 44 is formed on the exposed portion 37 </ b> A of the power adjustment device 37. Further, as shown in FIG. 5, the power adjustment device 37 is disposed in the vehicle width direction W so as to be biased toward the headlight unit 28 side with respect to the intake port 29 of the front cover 24, and the internal space 30 </ b> A of the intake passage 30. The amount of protrusion is suppressed.

  In the present embodiment, the gap between the power adjustment device 37 and the headlight housing 33 is sealed by a sealing material (not shown). Instead of this sealing material, the power adjustment device 37 and the headlight housing 33 The power adjusting device 37 and the headlight housing 33 may be fastened with bolts or the like with a packing made of resin or the like interposed therebetween.

  With the configuration as described above, the following effects (1) to (5) are achieved according to the present embodiment.

  (1) Since the exposed portion 37A of the power adjustment device 37 from the headlight unit 28 is disposed facing the internal space 30A of the intake passage 30, the motorcycle in which the periphery of the headlight device 38 is covered by the front cover 24. 10, the power adjustment device 37 can be suitably cooled by the traveling wind A flowing through the internal space 30 </ b> A of the intake passage 30. Conventionally, the surface area of the power adjustment device 37 has been set large in order to promote heat dissipation. However, since the cooling performance of the power adjustment device 37 is improved by configuring as described above, the power adjustment device 37 is downsized. it can. Further, the headlight unit 28 can be reduced in size by arranging a part of the power adjustment device 37 (exposed portion 37 </ b> A) outside the headlight unit 28. As a result, the headlight device 38 having the headlight unit 28 and the power adjustment device 37 can be reduced in size.

  (2) A part of the power adjustment device 37 is exposed to the outside on the side wall 40 of the headlight housing 33, the remaining part is housed in the headlight housing 33, and the exposed portion 37 </ b> A is the internal space of the intake passage 30. It is arranged facing 30A. Further, the storage portion 37 </ b> B of the power adjustment device 37 is disposed to face the reflector 36. As a result, the heat of the first light emitter 34 and the second light emitter 35 that are built in the headlight unit 28 and reach the highest temperature flows through the reflector 36 and the power adjustment device 37 through the internal space 30 </ b> A of the intake passage 30. Heat is transferred to the traveling wind A and removed. Therefore, the inside of the headlight unit 28 can be quickly cooled.

  (3) Since the cooling fins 44 are formed in the exposed portion 37A from the headlight unit 28 in the power adjustment device 37, the surface area of the exposed portion 37A facing the internal space 30A of the intake passage 30 can be increased. . Therefore, the cooling performance of the power adjustment device 37 by the traveling wind A flowing through the internal space 30A of the intake passage 30 can be further improved.

  (4) In the vehicle width direction W, the power adjustment device 37 is arranged so as to be biased toward the headlight unit 28 side of the intake port 29 of the front cover 24, and the amount of protrusion of the intake passage 30 into the internal space 30A is suppressed. ing. For this reason, the traveling wind A flowing through the internal space 30 </ b> A of the intake passage 30 can be prevented from being obstructed by the power adjustment device 37. In particular, it is preferable that the fins 44 of the power adjustment device 37 are arranged closer to the headlight unit 28 than the intake port 29 in the vehicle width direction W.

  (5) Since the air inlet 29 is provided with the foreign material intrusion prevention plate 39 for preventing the invasion of foreign materials, for example, foreign matter such as pebbles jumped up by a vehicle traveling ahead is sucked into the air intake port 29 to adjust power. Contact with the device 37 can be prevented.

DESCRIPTION OF SYMBOLS 10 Motorcycle 24 Front cover 28 Headlight unit 29 Intake port 30 Intake passage 30A Inner space of intake passage 34 First light emitter 35 Second light emitter 37 Power adjustment device 37A Power adjustment device exposed portion 37B Power adjustment device storage portion 40 Side wall 44 Fin A Running wind W Vehicle width direction

Claims (5)

A headlight unit that is disposed at the front end of the front cover that covers the front of the vehicle and includes a light emitter;
A vehicle headlight device having a power adjustment device for supplying predetermined power to the light emitter,
The front cover is formed with an intake port adjacent to the headlight unit, and an intake passage is connected to the intake port.
The power adjustment device is installed on a side wall of a headlight unit, and at least a part of the power adjustment device faces an internal space of the intake passage. The power adjustment device is provided such that a part of the power adjustment device is exposed to the outside of the headlight unit on the side wall of the headlight unit, the remaining part is accommodated in the headlight unit, and the exposed portion faces the internal space of the intake passage. The vehicle headlight device according to claim 1, wherein the vehicle headlight device is disposed. The vehicle headlight device according to claim 1, wherein a cooling fin is erected on an exposed portion of the power adjustment device. 2. The vehicle headlight device according to claim 1, wherein the power adjustment device is arranged to be biased toward the headlight unit side with respect to the air inlet in the vehicle width direction. The vehicle headlight device according to claim 1, wherein a foreign matter intrusion preventing unit that prevents foreign matter from entering is provided in the intake port.

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