JP5961091B2 - Motorcycle headlights - Google Patents

Description

  The present invention relates to a two-wheeled vehicle headlamp including a plurality of lamp units.

  2. Description of the Related Art Conventionally, as a two-wheeled vehicle headlamp, one configured to form a two-wheeled vehicle light distribution pattern by irradiation light from a plurality of lamp units is known.

  For example, “Patent Document 1” describes a two-wheeled vehicle headlamp including a pair of upper and lower lamp units. In this two-wheeled vehicle headlamp, the upper lamp unit has a configuration including a light emitting element arranged upward and a reflector arranged on the upper side, and the lower lamp unit is directed downward. The light emitting element is disposed and a reflector disposed below the light emitting element.

JP 2012-104423 A

  Like the two-wheeled vehicle headlamp described in the above-mentioned “Patent Document 1”, a pair of lamp units are arranged with their light-emitting elements placed back to back, so that both lamp units can be separated from each other. It is possible to arrange efficiently.

  However, in a configuration in which a pair of lamp units are arranged up and down like the two-wheeled vehicle headlamp described in the above-mentioned “Patent Document 1”, an arrangement having a horizontal cut-off line at the upper end as a two-wheeled vehicle light distribution pattern. It is difficult to form a light pattern, and it is also difficult to effectively use direct light emitted from the light emitting element toward the front side of the reflector in each lamp unit in order to improve the visibility of the light distribution pattern. It is.

  The present invention has been made in view of such circumstances, and in a two-wheeled vehicle headlamp provided with a pair of lamp units, a light distribution pattern having a horizontal cut-off line at the upper end as a light distribution pattern for a motorcycle. It is an object of the present invention to provide a two-wheeled vehicle headlamp that can be formed as a light distribution pattern with excellent visibility.

  The present invention is intended to achieve the above object by devising the arrangement and configuration of a pair of lamp units.

That is, the headlight for a motorcycle according to the present invention is
In a two-wheeled vehicle headlamp configured to form a two-wheeled vehicle light distribution pattern by irradiation light from a plurality of lamp units,
A pair of left and right lamp units as the plurality of lamp units,
Of the pair of left and right lamp units, one lamp unit includes a light emitting element disposed leftward and a reflector disposed on the left side of the light emitting element, and the other lamp unit is disposed rightward. A light emitting element and a reflector arranged on the right side of the light emitting element,
Direct light emitted from each light emitting element toward the front side of each reflector is formed by the light from each light emitting element reflected by each reflector to form a basic light distribution pattern having a horizontal cut-off line at the upper end. Thus, an additional light distribution pattern that reinforces the brightness of the diffusion region of the basic light distribution pattern is formed.

  The type of the “light emitting element” is not particularly limited, and for example, a light emitting diode or the like can be employed.

  The “basic light distribution pattern” is not particularly limited as long as it is a light distribution pattern having a horizontal cutoff line at the upper end.

  The “additional light distribution pattern” is not particularly limited as long as it is a light distribution pattern that reinforces the brightness of the diffusion region of the basic light distribution pattern.

  As shown in the above configuration, the two-wheeled vehicle headlamp according to the present invention has a configuration in which one lamp unit of a pair of left and right lamp units reflects light from a light emitting element arranged leftward with a reflector. In addition, since the other lamp unit is configured to reflect the light from the light emitting element arranged in the right direction with the reflector, both edge units of the light emitting surface of each light emitting element are used to The light distribution pattern formed by the reflected light from the reflector can be formed as a basic light distribution pattern having a horizontal cutoff line at the upper end. And thereby, the light distribution pattern which has a horizontal cutoff line in an upper end part as a light distribution pattern for two-wheeled vehicles can be formed.

  In addition, in the one lamp unit, additional light is added to reinforce the brightness of the diffusion region on the left side of the basic light distribution pattern by direct light emitted toward the front side of the reflector from the light emitting element arranged in the left direction. A light distribution pattern can be formed, and in the other lamp unit, the diffused light is emitted to the right side of the basic light distribution pattern by direct light emitted from the light emitting element arranged rightward toward the front side of the reflector. An additional light distribution pattern that reinforces the brightness of the region can be formed. And thereby, the light distribution pattern for two-wheeled vehicles can be made excellent in visibility.

  As described above, according to the present invention, in a two-wheeled vehicle headlamp including a pair of lamp units, a light distribution pattern having a horizontal cut-off line at the upper end can be formed as a light distribution pattern for two-wheeled vehicles. Can be formed as a light distribution pattern with excellent visibility.

  At that time, the additional light distribution pattern on the left side is formed by direct light from the light emitting element arranged in the left direction, so that it is formed around a position far away from the front direction of the lamp in the left direction. Since the additional light distribution pattern is formed by direct light from the light emitting element arranged in the right direction, the additional light distribution pattern is formed around a position far away from the front direction of the lamp in the left direction. Therefore, there is no possibility that glare will be given to the preceding vehicle driver, the oncoming vehicle driver, and the like due to the formation of these additional light distribution patterns.

  In the above configuration, if a light-shielding plate that shields light emitted upward from each light emitting element forward is disposed at the upper edge of the reflecting surface of each reflector, direct light from each light emitting element The possibility of giving glare to a pedestrian or the like on the shoulder portion of the road surface in front of the vehicle can be eliminated.

  At that time, if the light-reflecting process is applied to the lower surface of each light shielding plate, the light to be shielded by each light shielding plate can be positively used as light for irradiating the road surface ahead of the vehicle. . As a result, the light distribution pattern for a motorcycle can be further improved in visibility.

  In the above configuration, if the one lamp unit is arranged on the left side with respect to the other lamp unit, the pair of left and right lamp units are arranged with their light emitting elements back to back. Therefore, both lamp units can be arranged in a space efficient manner.

  In the above configuration, if a plurality of lamp units are arranged in the vertical direction, the light distribution pattern for a motorcycle can be made brighter and more visible. In addition, in the vehicle structure of a two-wheeled vehicle, it is not easy to secure a large space for arranging a two-wheeled vehicle headlight in the left-right direction, but it is relatively easy to secure a large space in the vertical direction. Employing the configuration is particularly effective.

The front view which shows the headlamp for two-wheeled vehicles which concerns on one Embodiment of this invention. II-II sectional view of FIG. III-III sectional view of FIG. The figure which shows transparently the light distribution pattern for two-wheeled vehicles formed on the virtual vertical screen arrange | positioned in the position of the lamp front 25m by the light irradiated ahead from the said headlamp for two-wheeled vehicles The figure similar to FIG. 1 which shows the modification of the said embodiment

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a two-wheeled vehicle headlamp 10 according to an embodiment of the present invention. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line III-III in FIG.

  As shown in these drawings, the two-wheeled vehicle headlamp 10 includes a pair of left and right lamps in a lamp chamber formed by a lamp body 12 and a transparent light-transmitting cover 14 attached to a front end opening thereof. This is a horizontally long lamp in which the units 20L and 20R are accommodated, and is configured to form a low beam light distribution pattern as a two-wheeled vehicle light distribution pattern by irradiation light from both the lamp units 20L and 20R.

  As for the headlamp 10 for a motorcycle, the direction indicated by X in FIG. 2 is “front” (also “front” as a vehicle), and the direction indicated by Y is “left direction” orthogonal to “front”. is there.

  The left lamp unit 20L includes a light emitting element 22L arranged in the left direction and a reflector 24L arranged on the left side of the light emitting element 22L. On the other hand, the right lamp unit 20R includes a light emitting element 22R arranged to the right and a reflector 24R arranged on the right side of the light emitting element 22R. In that case, both lamp units 20L and 20R have a symmetrical configuration.

  The reflecting surfaces 24La and 24Ra of the reflectors 24L and 24R in the lamp units 20L and 20R are configured by a plurality of reflecting elements 24Ls and 24Rs. At this time, each of the plurality of reflecting elements 24Ls, 24Rs reflects light from the light emitting elements 22L, 22R as parallel light slightly downward in the vertical direction and forward in the horizontal direction. It is reflected as diffused light that spreads to the left and right sides.

  Each light emitting element 22L, 22R has a rectangular light emitting surface 22La, 22Ra. Then, the light emitting element 22L of the left lamp unit 20L is arranged with the light emitting surface 22La directed in the left direction orthogonal to the lamp front-rear direction and with the upper edge of the light emitting surface 22La being horizontal, Further, the light emitting element 22R of the right lamp unit 20R is arranged with the light emitting surface 22Ra facing rightward perpendicular to the lamp front-rear direction and the upper edge of the light emitting surface 22Ra being horizontal.

  Each of the light emitting elements 22L and 22R is supported by a light source support member 32 disposed along a vertical plane extending in the lamp front-rear direction. The light source support member 32 extends to the rear of the reflectors 24L and 24R, and is fixed to the reflectors 24L and 24R via the holder 34 at the rear end.

  A light shielding plate 26 that shields light emitted upward from the light emitting elements 22L and 22R forward is disposed at the upper edge of the reflecting surfaces 24La and 24Ra of the reflectors 24L and 24R. At this time, the light shielding plate 26 is configured as a common member with respect to both the lamp units 20L and 20R. The light shielding plate 26 is formed integrally with the reflectors 24L and 24R.

  The light shielding plate 26 is formed so as to extend slightly upward toward the front, and extends slightly forward from the left and right front end edges of the reflecting surfaces 24La and 24Ra. In addition, the lower surface 26a of the light shielding plate 26 is subjected to light reflection processing such as aluminum vapor deposition. Thereby, the light reaching the light shielding plate 26 from each of the light emitting elements 22L and 22R is reflected downwardly toward the front on the lower surface 26a.

  On the other hand, a light shielding plate 28 that shields light emitted downward from the light emitting elements 22L and 22R forward is disposed at the lower end edge of the reflecting surfaces 24La and 24Ra in the reflectors 24L and 24R. At this time, the light shielding plate 28 is configured as a common member with respect to both the lamp units 20L and 20R. The light shielding plate 26 is formed integrally with the reflectors 24L and 24R.

  The light shielding plate 28 is formed so as to extend slightly downward toward the front, and extends slightly forward from the left and right front end edges of the reflecting surfaces 24La and 24Ra. Further, the upper surface 28a of the light shielding plate 28 is subjected to a light reflection process such as aluminum vapor deposition. This light reflection process is for enhancing the appearance of the lamp chamber.

  A plurality of diffuse reflection elements 28 s extending in the front-rear direction of the lamp are formed on the upper surface 28 a of the light shielding plate 28. Then, by each of the plurality of diffuse reflection elements 28s, the light that reaches the light shielding plate 28 from the light emitting elements 22L and 22R and is reflected upward in the upper surface 28a is diffused greatly in the left-right direction. It has become.

  FIG. 4 is a perspective view showing a two-wheeled vehicle light distribution pattern formed on a virtual vertical screen disposed at a position 25 m ahead of the lamp by light irradiated forward from the two-wheeled vehicle headlamp 10.

  This light distribution pattern for a motorcycle is a low beam light distribution pattern PL having a horizontal cut-off line CL at the upper end, and the horizontal cut-off line CL is a horizontal line H--V passing through HV that is a vanishing point in the front direction of the lamp. It is located slightly below H.

  The low beam light distribution pattern PL is composed of a pair of left and right basic light distribution patterns P0L and P0R and a pair of left and right additional light distribution patterns PaL and PaR.

  A pair of left and right basic light distribution patterns P0L and P0R are light distribution patterns that form the main part of the low beam light distribution pattern PL, and are arranged in the left-right direction around a vertical line VV passing through HV. It is formed in a slightly shifted state. A horizontal cutoff line CL of the low beam light distribution pattern PL is formed by the basic light distribution patterns P0L and P0R.

  At that time, the left basic light distribution pattern P0L is a light distribution pattern formed by the light from the light emitting element 22L reflected by the reflector 24L of the left lamp unit 20L, and the right basic light distribution pattern P0R is the right light distribution pattern P0R. This is a light distribution pattern formed by light from the light emitting element 22R reflected by the reflector 24R of the lamp unit 20R.

  On the other hand, the pair of left and right additional light distribution patterns PaL and PaR are light distribution patterns for reinforcing the brightness of the diffusion regions of both basic light distribution patterns P0L and P0R. It is formed so as to partially overlap the left end portions of both basic light distribution patterns P0L and P0R, and the right additional light distribution pattern PaR is partially overlapped with the right end portions of both basic light distribution patterns P0L and P0R. Is formed.

  At that time, the left additional light distribution pattern PaL is a light distribution pattern formed by direct light emitted from the light emitting element 22L of the left lamp unit 20L toward the front side of the reflector 24L, and the right additional light distribution pattern PaL. The pattern PaR is a light distribution pattern formed by direct light emitted from the light emitting element 22R of the right lamp unit 20R toward the front side of the reflector 24R.

  Here, since the luminous intensity distribution of the direct light from the light emitting element 22L arranged in the left direction has the highest luminous intensity in the direction far away from the lamp front direction to the left direction, the left additional light distribution pattern PaL is The luminous intensity distribution of the direct light from the light emitting element 22R formed rightward from the lamp front direction is centered at a position far away from the lamp front direction to the left. Since the luminous intensity is high, the additional light distribution pattern PaR on the right side is formed around a position far away from the lamp front direction to the right direction.

  Each of the additional light distribution patterns PaL and PaR is formed by direct light from each of the light emitting elements 22L and 22R. Therefore, the additional light distribution pattern PaL and PaR has a distribution extending upward from the horizontal cutoff line CL by the upward light component included in the direct light. It will be formed as a light pattern.

  However, these additional light distribution patterns PaL and PaR are formed at positions on the left and right sides away from the position of HV, so that the preceding vehicle driver and the oncoming vehicle are located by the portion extending above the horizontal cut-off line CL. There is no risk of glare on the driver.

  Moreover, the direct light emitted from the light emitting elements 22L and 22R of the respective lamp units 20L and 20R toward the front at a large upward angle reaches the light shielding plate 26 and is shielded, so that each additional light distribution pattern PaL and PaR The upward protrusion amount from the horizontal cut-off line CL is relatively small. Therefore, there is no possibility that glare is given to a pedestrian or the like by the additional light distribution patterns PaL and PaR.

  At that time, since the light that has reached the light shielding plate 26 is reflected downward on the lower surface 26a toward the front, the region below the horizontal cutoff line CL in each of the additional light distribution patterns PaL and PaR becomes brighter. .

  The direct light that has been emitted downward from the light emitting elements 22L and 22R of the lamp units 20L and 20R and reached the light shielding plate 28 is reflected upward on the upper surface 28a. Since the plurality of diffuse reflection elements 28s formed in FIG. 1 diffuse greatly in the left-right direction, there is no possibility that glare light will be generated.

  Next, the effect of this embodiment is demonstrated.

  The two-wheeled vehicle headlamp 10 according to this embodiment has a configuration in which a pair of left and right lamp units 20L and 20R and their light emitting elements 22L and 22R are arranged back to back, so that both lamp units 20L 20R can be arranged in a space efficient manner.

  At that time, the left lamp unit 20L (that is, one lamp unit) is configured to reflect the light from the light emitting element 22L arranged in the left direction by the reflector 24L, and the right lamp unit 20R (that is, the other lamp unit). The lamp unit) is configured to reflect the light from the light emitting element 22R arranged in the right direction by the reflector 24R, and therefore uses the edge shape of the light emitting surfaces 22La and 24Ra in the light emitting elements 22L and 22R. The light distribution pattern formed by the reflected light from both the reflectors 24L and 24R can be formed as basic light distribution patterns P0L and P0R having a horizontal cutoff line CL at the upper end. And thereby, the low beam light distribution pattern PL which has the horizontal cutoff line CL in an upper end part as a two-wheeled vehicle light distribution pattern can be formed.

  In addition, in the left lamp unit 20L, the brightness of the diffusion region is set to the left side of the basic light distribution pattern P0L by direct light emitted toward the front side of the reflector 24L from the light emitting element 22L arranged to the left. The additional light distribution pattern PaL to be reinforced can be formed, and in the right lamp unit 20R, the basic light distribution is achieved by direct light emitted toward the front side of the reflector 24R from the light emitting element 22R arranged in the right direction. An additional light distribution pattern PaR that reinforces the brightness of the diffusion region can be formed on the right side of the pattern P0R. Thereby, the low beam light distribution pattern PL can be made excellent in visibility.

  As described above, according to the present embodiment, in the two-wheeled vehicle headlamp 10 including the pair of lamp units 20L and 20R, the two lamp units 20L and 20R are arranged in a space-efficient manner, and the light distribution pattern for the motorcycle is obtained. A low beam light distribution pattern PL having a horizontal cut-off line CL at the upper end can be formed, and this can be formed as a light distribution pattern with excellent visibility.

  At that time, the additional light distribution pattern PaL on the left side is formed by direct light from the light emitting element 22L arranged in the left direction, so that the left side additional light distribution pattern PaL is formed around a position that is largely separated from the lamp front direction to the left direction, Since the additional light distribution pattern PaR on the right side is formed by direct light from the light emitting element 22R arranged in the right direction, the additional light distribution pattern PaR is formed around a position far away from the front direction of the lamp in the left direction. Therefore, the formation of these additional light distribution patterns PaL and PaR does not cause glare to the preceding vehicle driver or the oncoming vehicle driver.

  In addition, in the present embodiment, a light shielding plate 26 that shields light emitted upward from the light emitting elements 22L and 22R forward is disposed at the upper end edge of the reflecting surfaces 24La and 24Ra in the reflectors 24L and 24R. Since it is configured, it is possible to eliminate the possibility that glare is given to a pedestrian or the like on the road shoulder portion of the road surface in front of the vehicle by direct light from the light emitting elements 22L and 22R.

  At this time, since the light reflection process is performed on the lower surface 26a of the light shielding plate 26, the light to be shielded by the light shielding plate 26 can be positively used as light for irradiating the road surface in front of the vehicle. . As a result, the low-beam light distribution pattern PL can be further improved in visibility.

  In the above-described embodiment, the light shielding plate 26 is described as being formed to extend slightly upward toward the front. However, the light shielding plate 26 is configured to extend horizontally or slightly downward toward the front. Is also possible.

  In the above embodiment, the light shielding plates 26 and 28 are described as being formed integrally with the reflectors 24L and 24R. However, the light shielding plates 26 and 28 may be formed separately from the reflectors 24L and 24R. It is.

  In the embodiment described above, the light distribution pattern for motorcycles is described as being configured to form the light distribution pattern for low beam PL, but the light distribution pattern for fog lamps is configured to be formed. It is also possible to do.

  Next, a modification of the above embodiment will be described.

  FIG. 5 is a view similar to FIG. 1 showing a two-wheeled vehicle headlamp 110 according to this modification.

  As shown in the figure, the basic configuration of the two-wheeled vehicle headlamp 110 is the same as that of the above embodiment, but in this modification, a pair of left and right lamp units 20L, 20R in the above embodiment. A pair of left and right lamp units 120L and 120R having the same configuration as above are arranged in three stages.

  At this time, in this modification, each lamp unit 120L located on the left side includes a light emitting element 122L arranged in the right direction and a reflector 124L arranged on the right side of the light emitting element 122L. Each lamp unit 120R located on the right side includes a light emitting element 122R arranged in the left direction and a reflector 124R arranged on the left side of the light emitting element 122R.

  The light shielding plates 126L and 126R having the same configuration as the left and right halves of the light shielding plate 26 of the above-described embodiment are respectively disposed at the upper edge portions of the uppermost lamp units 120L and 120R. Light shielding plates 128L and 128R having the same configuration as the left and right halves of the light shielding plate 28 of the above-described embodiment are disposed at the lower end edges of the lamp units 120L and 120R, respectively.

  On the other hand, between the uppermost lamp units 120L and 120R and the middle lamp units 120L and 120R, and between the middle lamp units 120L and 120R and the lowermost lamp units 120L and 120R, The light shielding plates 140L and 140R having the functions of the left and right halves of the light shielding plates 26 and 28 are respectively disposed. In other words, the upper surface 140La1 and 140Ra1 and the lower surface 140La2 and 140Ra2 of each of the light shielding plates 140L and 140R are respectively subjected to light reflection processing by aluminum vapor deposition or the like, and the upper surfaces 140La1 and 140Ra1 extend in the longitudinal direction of the lamp. A plurality of diffuse reflection elements 140Ls and 140Rs are respectively formed.

  In this modification, a pair of left and right light source support members 132L and 132R are arranged so as to extend from the upper end to the lower end of the three sets of lamp units 120L and 120R at the left and right end edges in the lamp chamber. The left light source support member 132L supports the light emitting elements 122L of the left three lamp units 120L, and the right light source support member 132R supports the light emitting elements 122R of the right three lamp units 120R. Has been.

  Also in this modification, the low beam distribution pattern similar to the low beam distribution pattern PL shown in FIG. 4 is formed by the light emitted forward from the two-wheeled vehicle headlamp 110. This is three times brighter than the low beam light distribution pattern PL.

  Even in the case of adopting the configuration of this modification, it is possible to obtain the same effects as those of the above embodiment.

  Moreover, in the present modification, since the three sets of lamp units 120L and 120R are provided, the low beam light distribution pattern PL can be made brighter and more excellent in visibility.

  At this time, in the present modification, the three sets of lamp units 120L and 120R are arranged in three upper and lower stages, so that the above-described operation can be performed without increasing the lateral width of the lamp body 112 and the translucent cover 114 that accommodate them. An effect can be obtained. Thereby, the two-wheeled vehicle headlamp 110 can be made suitable for the vehicle structure of the two-wheeled vehicle.

  In addition, the numerical value shown as a specification in the said embodiment and its modification is only an example, and of course, you may set these to a different value suitably.

  The invention of the present application is not limited to the configuration described in the above-described embodiment and its modifications, and a configuration with various other changes can be adopted.

10, 110 Motorcycle headlamp 12, 112 Lamp body 14, 114 Translucent cover 20L, 20R, 120L, 120R Lamp unit 22L, 22R, 122L, 122R Light emitting element 22La, 22Ra Light emitting surface 24L, 24R, 124L, 124R Reflector 24La, 24Ra Reflective surface 24Ls, 24Rs Reflective element 26, 28, 126L, 126R, 128L, 128R, 140L, 140R Light shielding plate 26a, 140La2, 140Ra2 Lower surface 28a, 140La1, 140Ra1 Upper surface 28s, 140Ls, 140Rs Diffuse reflective element 32, 132L , 132R Light source support member 34 Holder CL Horizontal cut-off line PL Low beam light distribution pattern PaL, PaR Additional light distribution pattern P0L, P0R Basic light distribution pattern

Claims (5)

In a two-wheeled vehicle headlamp configured to form a two-wheeled vehicle light distribution pattern by irradiation light from a plurality of lamp units,
A pair of left and right lamp units as the plurality of lamp units,
Of the pair of left and right lamp units, one lamp unit includes a light emitting element disposed leftward and a reflector disposed on the left side of the light emitting element, and the other lamp unit is disposed rightward. A light emitting element and a reflector arranged on the right side of the light emitting element,
Direct light emitted from each light emitting element toward the front side of each reflector is formed by the light from each light emitting element reflected by each reflector to form a basic light distribution pattern having a horizontal cut-off line at the upper end. Thus, the two-wheeled vehicle headlamp is configured to form an additional light distribution pattern that reinforces the brightness of the diffusion region of the basic light distribution pattern.   2. The front for a motorcycle according to claim 1, wherein a light-shielding plate that shields light emitted upward from each light-emitting element forward is disposed at an upper end edge of the reflecting surface of each reflector. Lighting.   The two-wheeled vehicle headlamp according to claim 2, wherein a light reflection process is performed on a lower surface of each of the light shielding plates.   The headlamp for a motorcycle according to any one of claims 1 to 3, wherein the one lamp unit is disposed on the left side with respect to the other lamp unit.   The two-wheeled vehicle headlamp according to any one of claims 1 to 4, wherein a plurality of the lamp units are arranged in the vertical direction.

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