JP2012134074A - Vehicular headlamp device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular headlamp device capable of preventing generation of fogging on an internal surface of a lamp caused by dew condensation by making an internal space of the lamp sufficiently ventilate air by means of wind generated during traveling even though a lamp support arm and a breathing hole for ventilating air in the lamp are adjacently arranged in the vicinity of a lower part of the lamp disposed at a front side of a vehicle body.SOLUTION: The vehicular headlamp device includes a lamp 13 arranged on a front side of the vehicle body 2, the support arm 17 projected outward from a lower part of the lamp 13 in front view of the vehicle body 2 and mounting its projected section at a vehicle body 2 side, and a bumper 10 placed so as to be adjacent to the lamp 13 in front view of the vehicle body 2 and mounted at the vehicle body 2 side by covering the support arm 17 from the front side. The breathing hole 31 is formed at a lower part of a lamp housing 24 forming a back face side of the lamp 13 so as to communicate the inside with the outside of the lamp 13. A through-hole 39 penetrating the support arm 17 in a back and forth direction is formed on the support arm 17.

Description

  In the present invention, the lamp disposed on the front side of the vehicle body is supported on the vehicle body side by the support arm, and the internal space of the lamp can be ventilated through the breathing hole formed in the lamp by the negative pressure generated by the traveling wind. The present invention relates to a vehicle headlamp device.

  Conventionally, there is a vehicle headlamp device disclosed in Patent Document 1 below. According to the publication, a headlamp device for a vehicle projects a lamp disposed on the front side of the vehicle body, and protrudes outward from the lower portion of the lamp in a front view of the vehicle body. A support arm attached to the vehicle body, and a bumper that is arranged side by side so as to be adjacent to the lamp in a front view of the vehicle body, covers the support arm from the front, and is attached to the vehicle body side, and communicates the inside and outside of the lamp. A breathing hole is formed in the lower part of the lamp housing constituting the rear surface portion of the lamp.

  When the vehicle travels, the traveling wind flows from the front side to the rear side of the lamp and the bumper through the gap between the lamp and the bumper when viewed from the front of the vehicle body. Then, a negative pressure is generated around the breathing hole by the traveling wind, and the air in the internal space of the lamp is sucked outside through the breathing hole by the negative pressure. As a result, the internal space of the lamp is ventilated, thus preventing the occurrence of fogging due to condensation on the inner surface of the lamp.

JP 2009-170260 A

  By the way, in order to make it possible to firmly support the lamp on the vehicle body side, the support arm normally protrudes outward from at least the lower portion of the lamp as described above, and the protruding portion is on the vehicle body side. Attached to.

  On the other hand, as described above, when the internal space of the lamp is ventilated through the breathing hole, the breathing hole is usually provided on the upper and lower ends of the lamp housing, respectively, in order to prevent an air staying portion from occurring in the internal space. It is formed. According to this, air flows in the entire internal space of the lamp from the upper breathing hole to the lower breathing hole, and as described above, an air retention portion is prevented from being generated in the internal space of the lamp. Is done.

  Here, according to the above configuration, both the support arm and the lower breathing hole tend to be arranged close to each other around the lower portion of the ramp. For this reason, even when the traveling wind that flows through the gap between the ramp and the bumper and flows from the front side to the rear side of the vehicle tries to flow around the lower breathing hole, The flow may be inhibited by the support arm. In this case, the generation of the negative pressure around the lower breathing hole is insufficient, that is, the ventilation of the internal space of the lamp may be insufficient.

  The present invention has been made paying attention to the above situation, and an object of the present invention is to provide a support arm for supporting the lamp around the lower part of the lamp disposed on the front side of the vehicle body, Even if the ventilation holes for ventilation are arranged close to each other, it is possible to sufficiently ventilate the interior space of the lamp by running wind so that fogging due to condensation on the inner surface of the lamp is prevented. Is to do.

According to the first aspect of the present invention, the lamp 13 disposed on the front surface side of the vehicle body 2 and the vehicle body 2 as viewed from the front (FIG. 3) protrude outward from the lower portion of the lamp 13, and the protruding portion is the vehicle body 2. A support arm 17 attached to the side of the vehicle body 2 and a bumper attached to the side of the vehicle body 2 so as to be adjacent to the lamp 13 in a front view of the vehicle body 2 (FIG. 3) and covering the support arm 17 from the front side. 10 and a headlamp device for a vehicle in which a breathing hole 31 is formed in a lower portion of a lamp housing 24 constituting a rear surface portion of the lamp 13 so as to communicate the inside and outside of the lamp 13.
The vehicle headlamp device is characterized in that a through hole 39 penetrating in the front-rear direction is formed in the support arm 17.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

The invention of claim 1 includes a lamp disposed on the front side of the vehicle body, a support arm that protrudes outward from a lower portion of the lamp in a front view of the vehicle body, and the protruding portion is attached to the vehicle body side, And a bumper attached to the vehicle body side so as to cover the support arm from the front thereof, and to connect the inside and the outside of the lamp. In a vehicle headlamp device in which a breathing hole is formed in the lower part of the lamp housing constituting
A through-hole penetrating in the front-rear direction is formed in the support arm.

  For this reason, when the vehicle travels, the traveling wind flows from the front side to the rear side through the gap between the ramp and the bumper in the front view of the vehicle body, and the traveling wind flows toward the support arm. In this case, the traveling wind passes through the through hole to the rear and flows in the rear region of the breathing hole.

  Therefore, the flow of the traveling wind in the rear area of the breathing hole described above will surely generate a negative pressure around the breathing hole, and this negative pressure causes the air in the internal space of the lamp to pass through the breathing hole. Since the interior space of the lamp is sufficiently ventilated by being sucked to the outside, the occurrence of fogging due to condensation on the inner surface of the lamp is more reliably prevented.

  The above-described prevention of fogging on the inner surface of the lamp can be achieved at a low cost with a simple configuration in which a through hole is formed in the support arm, which is extremely beneficial.

  In addition, since the through-hole is formed in the support arm as described above, the portion around the through-hole in the support arm can be a fragile portion. In this way, when the impact force is applied to the support arm at the time of a light collision at the frontal collision of the vehicle, stress concentration occurs in the fragile portion, and the fragile portion is smoothly bent or broken, Thus, the impact force can be reduced.

It is the II sectional view taken on the line of FIG. It is a perspective view of a vehicle front part. It is a partial front view of a vehicle. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3.

  In the vehicle headlamp device according to the present invention, the support arm for supporting the lamp and the breathing hole for ventilation in the lamp are arranged close to each other around the lower part of the lamp arranged on the front side of the vehicle body. However, the present invention was implemented in order to realize the object of sufficiently ventilating the interior space of the lamp by the running wind and preventing the occurrence of fogging due to condensation on the inner surface of the lamp. The form to do is as follows.

  That is, a vehicle headlamp device includes a lamp disposed on the front side of a vehicle body, a support arm that protrudes outward from a lower portion of the lamp in a front view of the vehicle body, and the protruding portion is attached to the vehicle body side. And a bumper that is arranged side by side so as to be adjacent to the lamp in a front view of the vehicle body, and that covers the support arm from the front side and is attached to the vehicle body 2 side. A breathing hole is formed in the lower portion of the lamp housing constituting the rear surface portion of the lamp so as to communicate the inside and outside of the lamp. A through-hole penetrating in the front-rear direction is formed in the support arm.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 is a vehicle exemplified by an automobile, and an arrow Fr indicates the front in the traveling direction of the vehicle 1.

  The front portion of the vehicle body 2 of the vehicle 1 is supported on the traveling surface by the front wheels 3. The front portion of the vehicle body 2 includes a front fender 5 constituting an outer shell on each of the left and right sides thereof, an engine room 6 formed between the left and right front fenders 5 for accommodating an engine (not shown), and the engine room 6 A hood 7 that can be opened and closed from above, a radiator support 9 that is disposed at a front end portion of the engine room 6 and supports a radiator 8 for cooling the engine, and a front end portion of the engine room 6 that includes the radiator support 9. And a front bumper 10 covering from the front.

  The front fender 5 is firmly supported by a vehicle body skeleton member such as a front apron member (not shown). The radiator support 9 is firmly supported by a vehicle frame member such as left and right side members (not shown), and the radiator support 9 also constitutes the vehicle frame member. The bumper 10 is mainly supported by the radiator support 9. The front fender 5, the hood 7, and the radiator support 9 are made of sheet metal, and the bumper 10 is made of resin.

  Headlamps 13 are respectively disposed on the left and right upper portions on the front side of the front portion of the vehicle body 2. Each of these lamps 13 is inserted into a space surrounded by the front edge of the upper part of the front fender 5, the side edge of the front part of the hood 7, and the side edge of the upper part of the bumper 10 at each upper part of the front part of the vehicle body 2. The bumper 10 and the lamp 13 are arranged side by side so as to be adjacent to each other with a slight gap 14 when viewed from the front of the vehicle body 2 (FIG. 3).

  The lamp 13 is supported on the vehicle body 2 side by upper, lower, and midway support arms 16 to 18 for supporting the lamp 13 projecting from the upper, lower, and midway portions in the vertical direction. Specifically, the protrusions of the upper and middle support arms 16 and 18 are attached to the front fender 5 by fasteners 20, respectively. The lower support arm 17 projects horizontally from the lower part of the lamp 13 toward the center in the width direction of the vehicle body 2, and the projecting part of the vertical frame 9 a constituting the outer part of the radiator support 9. The other fastener 21 is attached to the middle part in the longitudinal direction. In this case, the lower support arm 17 is covered by the upper part of the bumper 10 from the front.

  The lamp 13 includes a lamp housing 24 that forms a rear surface portion and opens forward, a lamp lens 25 that covers the opening of the lamp housing 24 and is attached to a front opening edge of the lamp housing 24, and these lamps A bulb 27 is provided in an internal space 26 surrounded by the housing 24 and the lamp lens 25 and attached to the lamp housing 24. The bulb 27 irradiates the front of the vehicle body 2 through the lamp lens 25. The support arms 16 to 18 are integrally projected from the outer edge of the lamp housing 24, respectively.

  Breathing holes 30 and 31 are formed in the upper and lower ends of the lamp housing 24 of the lamp 13 so that the inside and outside of the lamp 13 communicate with each other. Specifically, the inner cylinder 33 integrally protruding rearward from the lower end portion of the lamp housing 24, and located outside the inner cylinder 33, is substantially coaxial with the inner cylinder 33. An outer cylindrical body 34 that protrudes larger and integrally than the inner cylindrical body 33 from the outer surface of the lower end of the lamp housing 24 toward the rear is provided. Of the two breathing holes 30, 31, the lower breathing hole 31 is formed in a labyrinth shape by the inner hole of the inner cylinder 33, and a filter 35 is fitted in the breathing hole 31. Although not shown, the upper breathing hole 30 is formed in substantially the same manner as the lower breathing hole 31.

  Then, the air A can flow inside and outside the lamp 13 through the breathing holes 30 and 31, and this flow ventilates the internal space 26 of the lamp 13, thereby clouding due to condensation on the inner surface of the lamp 13. Is prevented from occurring. In addition, by preventing the occurrence of fogging in this way, the appearance of the lamp 13 is maintained well, and the irradiation by the bulb 27 through the lamp lens 25 is well maintained.

  The lower support arm 17 is a plan view of the vehicle body 2 (FIG. 1), and a longitudinal middle portion thereof is bent, and a front surface thereof is rearward toward the outer side of the vehicle body 2 (base portion). It is set as the inclined surface 38 which inclines to. Further, a rectangular through-hole 39 that passes through the middle portion of the inclined surface 38 in the front view of the vehicle body 2 (FIG. 3) and penetrates the lower support arm 17 in the front-rear direction is formed.

  Of the hole edges of the through hole 39 in the lower support arm 17, a circle extending from the inner edge in the width direction of the vehicle body 2 to the rear once and then toward the outer side of the vehicle body 2. A guide body 40 that is bent in an arc shape, and a top plate 41 that is formed integrally with the lower support arm 17 and the upper end edge of the guide body 40 so as to close the space between the guide body 40 and the upper end edge of the guide body 40 are provided. .

  The appearance of the lamp 13 is as follows. That is, the lamp 13 is configured so that the front surface of the lamp lens 25 of the lamp 13 is directed backward and outward as the front surface of the lamp lens 25 of the lamp 13 is directed upward in order to reduce the air resistance during the traveling of the vehicle 1 and to improve the appearance. It is made into the shape extended long diagonally back upwards.

  Here, when the lamp 13 is supported on the vertical frame 9 a of the radiator support 9 by the lower support arm 17, among the vertical parts of the lamp 13, the radiator support 9 is arranged in the width direction of the vehicle body 2. The part closest to the vertical frame 9a is the lower part of the lamp 13. Therefore, in order to make the length of the lower support arm 17 shorter and more compact and to firmly support the lamp 13 by the lower support arm 17, the lower support arm 17 extends from the lower portion of the lamp 13. Is protruded, and this protrusion is attached to the longitudinal frame 9 a of the radiator support 9.

  On the other hand, when the internal space 26 of the lamp 13 is ventilated through the breathing holes 30, 31, the upper side of the breathing holes 30, 31 is prevented in order to prevent an air staying portion from occurring in the internal space 26. The breathing hole 30 is formed at the upper end of the lamp 13, and the lower breathing hole 31 is formed at the lower end of the lamp 13.

  Here, according to the above configuration, both the support arm 17 and the lower breathing hole 31 tend to be arranged close to each other around the lower portion of the lamp 13. For this reason, when the vehicle 1 travels, the traveling wind W flowing through the gap 14 between the ramp 13 and the bumper 10 and flowing from the front side to the rear side of the 13, 10 around the lower breathing hole 31. Even if it is about to flow toward the surface, this flow may be inhibited by the support arm 17.

  However, as described above, the support arm 17 is formed with the through hole 39 penetrating in the front-rear direction.

  Therefore, when the vehicle 1 travels, the traveling wind W flows from the front side to the rear side of the 13, 10 through the gap 14 between the lamp 13 and the bumper 10 in the front view of the vehicle body 2 (FIG. 3). When the traveling wind W flows toward the lower support arm 17, the traveling wind W is first guided by the inclined surface 38 and directed to the through hole 39, and then the penetration wind W While passing through the hole 39 rearwardly, it is guided by the guide body 40 and the upper surface plate 41 so as to flow across the rear area of the lower breathing hole 31 as viewed from the front of the vehicle body 2 (FIG. 3).

  Therefore, the flow of the traveling wind W in the rear region of the lower breathing hole 31 causes a negative pressure around the lower breathing hole 31 more reliably. The air A in the internal space 26 of the lamp 13 is sucked to the outside through the breathing hole 31, while the external air is introduced into the internal space 26 through the upper breathing hole 30. As a result, the internal space 26 of the lamp 13 is sufficiently ventilated, so that the occurrence of fogging due to condensation on the inner surface of the lamp 13 is more reliably prevented.

  The above-described prevention of fogging on the inner surface of the lamp 13 can be achieved at a low cost with a simple configuration in which the through hole 39 is formed in the lower support arm 17, which is extremely beneficial.

  In addition, since the through hole 39 is formed in the lower support arm 17 as described above, the portion around the through hole 39 in the lower support arm 17 can be a weak portion. In this way, when the impact force is applied to the lower support arm 17 at the time of a light collision at the front collision of the vehicle 1, stress concentration occurs in the fragile portion, and the fragile portion is smoothly bent or broken. As a result, the impact force can be reduced.

  As indicated by the alternate long and short dash line in FIG. 1, among the edge portions of the through holes 39 in the lower support arm 17, other guides integrally projecting forward from the inner edge portion in the width direction of the vehicle body 2. A body 44 may be provided. In this way, the traveling wind W that has passed through the gap 14 backward is more reliably guided to the through hole 39.

  Note that the front surface of the lower support arm 17 does not need to form the inclined surface 38 so as to extend linearly to the vehicle body 2. In addition, the guide body 40 and the other guide bodies 44 are of the order of ribs and may be short in the front-rear direction, but the guide body 40 and the upper surface plate 41 may not be provided. .

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 5 Front fender 9 Radiator support 9a Vertical frame 10 Bumper 13 Lamp 14 Crevice 17 Support arm 24 Lamp housing 25 Lamp lens 26 Internal space 31 Breathing hole 38 Inclined surface 39 Through hole 40 Guide body A Air W Running wind

Claims (1)

A lamp disposed on the front side of the vehicle body; a support arm that protrudes outward from a lower portion of the lamp in a front view of the vehicle body; and a protrusion that is attached to the vehicle body side; and the lamp in a front view of the vehicle body. And a bumper attached to the vehicle body side so as to cover the support arm from the front thereof and communicate with the inside and outside of the lamp. In a vehicle headlamp device having a breathing hole formed in
A vehicle headlamp device, wherein a through-hole penetrating in the front-rear direction is formed in the support arm.

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