JP2017056826A - Map lamp for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress unevenness of light radiated onto a lens 40 from bulbs 12, 13.SOLUTION: A reflection part 60 of a map lamp for a vehicle 10 has a pair of reflection surfaces 62, 63 which have an apex at Y direction center of a connection part 22C in a rear face view and are so inclined as to be separated to -Z direction side from a lens 40 toward -Y direction side and +Y direction respectively from the center. Thus, light from a bulb 12 is reflected onto the lens 40 by the reflection surface 62, and light from a bulb 13 is reflected onto the lens 40 by the reflection surface 63. Consequently, since a region in which radiation is made from the bulb 12 onto the lens 40 and a region in which radiation is made from the bulb 13 onto the lens 40 are shared on one side and the other side of the connection part 22C with respect to the Y direction center, partial overlapping between light from the bulb 12 and light from the bulb 13 can be suppressed. Therefore, unevenness of light which is radiated from the bulbs 12, 13 onto the lens 40 can be suppressed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle map lamp.

  Patent Document 1 discloses a vehicle interior lamp in which a contact member that operates a switch that controls turning on and off of a light source is provided outside the light orientation range from the light source toward the transmission portion.

JP 2007-172906 A

  Here, the vehicle interior lamp includes a pair of light sources and a housing in which a structure portion is disposed between the pair of light sources so that a housing space for the light sources is formed in a U shape in plan view. There is a map lamp. In such a vehicle map lamp, a part of the light emitted from each of the pair of light sources to the lens is blocked by the structure portion, so that the light from one light source and the light from the other light source overlap each other. In some cases, a non-overlapping portion is formed and unevenness of light irradiated to the lens occurs.

  In consideration of the above fact, an object of the present invention is to provide a vehicle map lamp that can suppress unevenness of light emitted from a light source to a lens.

  According to a first aspect of the present invention, there is provided a map lamp for a vehicle, which includes a pair of light sources arranged at intervals in a predetermined arrangement direction, a structure unit disposed between the pair of light sources, and the structure unit in plan view. A pair of housing portions formed on both sides of the placement direction along an orthogonal direction orthogonal to the placement direction and each housing the light source, and a connecting portion for connecting one end of the housing portion in the orthogonal direction; , A housing in which a U-shaped accommodation space in plan view is formed, a U-shaped lens in plan view that covers the accommodation space and transmits light emitted from the light source to the outside, and the rear view. And a reflecting portion having a pair of reflecting surfaces inclined from the center toward the one side and the other side of the arrangement direction from the center of the center in the arrangement direction at the connection portion.

  According to the vehicle map lamp of the first aspect, light is irradiated from a pair of light sources to a U-shaped lens in plan view, and the light is transmitted through the lens to the outside.

  Here, in the configuration in which the structure portion is disposed between the pair of light sources, a part of light irradiated from the light source to the connection portion side of the accommodation space is blocked by the structure portion. As a result, a portion where the light from one light source and the light from the other light source overlap and a portion that does not overlap each other are formed, and unevenness of light irradiated to the lens may occur at the connection portion.

  On the other hand, the map lamp for a vehicle according to claim 1 includes a reflection portion, and the reflection portion has a center in the arrangement direction in the connection portion in the rear view as a vertex and one side in the arrangement direction from the center. It has a pair of reflective surfaces which incline so that it may space apart from a lens toward each of the other side.

  For this reason, the light from one light source is reflected by one reflection surface to the lens on one side with respect to the center of the arrangement direction in the connection portion. In addition, light from the other light source is reflected to the lens by the other reflecting surface on the other side with respect to the center of the arrangement direction in the connecting portion.

  As a result, the region irradiated from one light source to the lens and the region irradiated from the other light source to the lens are shared by one side and the other side with respect to the center of the arrangement direction in the connecting portion. A partial overlap between the light from the light source and the light from the other light source can be suppressed. Therefore, unevenness of light emitted from the light source to the lens can be suppressed.

  Since the present invention has the above-described configuration, it has an excellent effect that unevenness of light irradiated from the light source to the lens can be suppressed.

It is a top view which shows the structure of the map lamp for vehicles which concerns on this embodiment. FIG. 2 is a sectional view taken along line 2-2 in FIG. It is the enlarged view to which the lens in FIG. 2 was expanded. It is a top view which shows the structure of the map lamp for vehicles which concerns on a comparative example. FIG. 5 is a sectional view taken along line 5-5 in FIG. It is the enlarged view to which the lens in FIG. 5 was expanded.

  Below, an example of an embodiment concerning the present invention is described based on a drawing.

(Vehicle map lamp 10)
First, the configuration of the vehicle map lamp 10 according to the present embodiment will be described. 1 and 2 show a map lamp 10 for a vehicle.

  Note that the + X direction, −X direction, + Y direction, −Y direction, + Z direction, and −Z direction used in the following description are the arrow directions shown in the drawing. In the following explanation, “X direction” means “+ X direction or −X direction”, “Y direction” means “+ Y direction or −Y direction”, and “Z direction” means “+ Z direction or −Z direction”. To do. Further, the X direction, the Y direction, and the Z direction are directions orthogonal to each other. Furthermore, a symbol in which “X” is written in “◯” in the figure means an arrow heading from the front of the page to the back. In addition, a symbol in which “•” is written in “◯” in the figure means an arrow heading from the back of the page to the front.

  The vehicle map lamp 10 is attached to, for example, a ceiling portion between a driver seat and a passenger seat in a vehicle interior of the vehicle, and is used as illumination for illuminating a hand in the vehicle interior at night. In a state in which the vehicle map lamp 10 is attached to the ceiling, the + X direction, the −X direction, the + Y direction, the −Y direction, the + Z direction, and the −Z direction are, for example, the vehicle front side and the vehicle rear side, respectively. , Corresponding to the vehicle left side, vehicle right side, vehicle lower side and vehicle upper side.

  Specifically, as shown in FIG. 1, the vehicle map lamp 10 includes a pair of bulbs 12 and 13 (an example of a light source), a housing 20 (housing), a lens 40, a reflection unit 60, It has.

  The pair of valves 12 and 13 are arranged at intervals in the Y direction (predetermined arrangement direction). The bulbs 12 and 13 are constituted by LEDs, for example.

  The housing 20 has a substantially rectangular shape in plan view (viewed in the −Z direction). The housing 20 is provided with a structural portion 30 disposed between the pair of valves 12 and 13. The structure portion 30 is formed in a T shape having a horizontal bar portion 32 and a vertical bar portion 34 in plan view. The horizontal bar portion 32 of the structural portion 30 is disposed on the + X direction side portion of the housing 20, and the T-shaped vertical bar portion 34 is on the −X direction side with respect to the horizontal bar portion 32 and the pair of valves 12, 13 between them. In the structural unit 30, for example, a switch 30A for switching on and off of the bulbs 12 and 13 is disposed.

  Further, the housing 20 is formed with a U-shaped accommodation space 22 in plan view. The accommodation space 22 is formed along the X direction (orthogonal direction orthogonal to the arrangement direction) on the + Y direction side and the −Y direction side (both sides of the arrangement direction) with respect to the vertical bar portion 34 of the structure unit 30 in plan view. It has a pair of accommodating portions 22A and 22B, and a connecting portion 22C that couples the end portions in the -X direction (one end portion in the orthogonal direction) of the accommodating portions 22A and 22B.

  Valves 12 and 13 are accommodated in the pair of accommodating portions 22A and 22B, respectively. 22 A of accommodating parts are extended in the -X direction from the -X direction side of the overhang | projection part 31 which protruded in the -Y direction side rather than the vertical bar part 34 in the horizontal bar part 32 of the structure part 30. As shown in FIG.

  The housing portion 22A includes a side wall 37 on the −X direction side of the overhang portion 31, a side wall 35 on the −Y direction side in the vertical bar portion 34 of the structure portion 30, and a side wall 25 on the −Y direction side of the housing 20. It is partitioned. The side wall 35 has an inclined wall 35A that is inclined so as to be gradually shifted to the + Y direction side in the plan view, and an inclined wall that is gradually inclined to the + Y direction side in the plan view. And an inclined wall 35B that is inclined so as to deviate more than 35A. That is, the inclination angle of the inclined wall 35B is larger than the inclination angle of the inclined wall 35A. For this reason, compared with the case where the inclination angle of the inclined wall 35B is the same as the inclination angle of the inclined wall 35A, the range obstructed by the light traveling from the bulb 12 toward the connecting portion 22C is reduced.

  The accommodating portion 22B extends in the −X direction from the −X direction side of the protruding portion 33 that protrudes in the + Y direction side of the vertical rod portion 34 in the horizontal bar portion 32 of the structure portion 30.

  The accommodating portion 22B is partitioned by a side wall 38 on the −X direction side of the overhang portion 33, a side wall 36 on the + Y direction side in the vertical bar portion 34 of the structure portion 30, and a side wall 26 on the + Y direction side of the housing 20. ing. The side wall 36 has an inclined wall 36A that is inclined so as to be gradually shifted to the −Y direction side as it goes to the −X direction side in a plan view, and gradually toward the −Y direction side as it goes to the −X direction side in a plan view. And an inclined wall 36B that is inclined so as to be largely displaced from the inclined wall 36A. That is, the inclination angle of the inclined wall 36B is larger than the inclination angle of the inclined wall 36A. For this reason, compared with the case where the inclination angle of the inclined wall 36B is the same as the inclination angle of the inclined wall 36A, the range obstructed by the light traveling from the bulb 13 toward the connecting portion 22C becomes smaller.

  The + Z direction side portion 55 of the inclined wall 35B in the vertical bar portion 34 protrudes in a substantially triangular shape on the −X direction side and the −Y direction side. Further, the + Z direction side portion 56 of the inclined wall 36B in the vertical bar portion 34 protrudes in a substantially triangular shape on the −X direction side and the + Y direction side.

  The connecting portion 22 </ b> C is disposed on the −X direction side with respect to the vertical bar portion 34 of the structure portion 30. The side wall 39 on the −X direction side in the vertical bar portion 34 of the structure portion 30 and the side wall 29 on the −X direction side of the housing 20 are partitioned.

  The housing space 22 in the housing 20 has an opening 23 having a U shape in plan view on the + Z direction side. The opening 23 is formed to be surrounded by edge portions on the + Z direction side of the side walls 25, 29, 26, 38, 36, 39, 35, and 37.

  As shown in FIG. 2, the outer surface (the surface on the −Z direction side) of the opposing wall 27 (the wall on the −Z direction side) facing the lens 40 in the housing 20 has a driver seat in the vehicle compartment of the vehicle. A pair of attachment portions 28 for attaching the housing 20 to the ceiling portion between the passenger seats is provided. The attachment portion 28 is formed in an L shape in a rear view (+ X direction view), and is attached to the ceiling portion by attachment means such as bolt fastening.

  As shown in FIG. 1, the lens 40 has a U shape in plan view corresponding to the opening 23 in a U shape in plan view. The lens 40 is provided in the opening 23 and covers the accommodation space 22. As shown in FIG. 3, for example, the lens 40 has a lens cut 42 on the inner surface (the surface in the −Z direction). The lens 40 transmits light from the bulbs 12 and 13 to the outside (+ Z direction).

  As shown in FIG. 2, the reflection part 60 has the Y-direction center CE (arrangement direction center) in the connecting portion 22C as the apex in the rear view, and the −Y direction side and the + Y direction side (arrangement direction direction) from the center CE. A pair of reflecting surfaces 62 and 63 that incline toward the −Z direction side from the lens 40 toward the one side and the other side). The vertex of the reflection part 60 is in contact with the inner surface of the lens 40 or has a slight gap. An end portion in the −Z direction of the reflection portion 60 is joined to the facing wall 27.

  The reflecting surface 62 reflects a part of the light traveling from the bulb 12 toward the connecting portion 22C to the lens 40 side (+ Z direction side). The reflecting surface 63 reflects a part of the light traveling from the bulb 13 toward the connecting portion 22C to the lens 40 side (+ Z direction side). The reflection surfaces 62 and 63 may be flat or curved. Moreover, the reflection part 60 may be integrally formed with the housing 20, and may be formed as another component.

(Operational effect of this embodiment)
Next, the operation and effect of the vehicle map lamp 10 according to the present embodiment will be described while being compared with the operation of the vehicle map lamp 100 according to the comparative example that does not include the reflecting portion 60.

  As shown in FIGS. 4 and 5, the vehicle map lamp 100 according to the comparative example is configured in the same manner as the above-described vehicle map lamp 10 except that the reflection unit 60 is not provided. In the vehicle map lamp 100 according to the comparative example, a part of the light traveling from the bulbs 12 and 13 toward the connecting portion 22C is blocked by the structure portion 30 disposed between the pair of bulbs 12 and 13. That is, the structure 30 limits the irradiation area of the light irradiated from the bulbs 12 and 13 toward the connecting portion 22C.

  Thereby, in the comparative example, a portion LA (vertical line portion) where the light from the bulb 12 and the light from the bulb 13 overlap and a portion LB where the light does not overlap are formed in the connecting portion 22C and irradiated to the lens 40. Light unevenness occurs. In particular, in the non-overlapping portion LB, light is irradiated only from one of the bulbs 12 and 13, so that a shadow SH is generated on one side of the lens cut 42 applied to the inner surface of the lens 40 as shown in FIG. Cheap. Due to the shadow SH, an oblique shadow may be generated on the surface of the lens 40 along the two-dot chain line S (the boundary between the overlapping portion LA and the non-overlapping portion LB) in FIG.

  On the other hand, the vehicle map lamp 10 according to the present embodiment includes a reflecting portion 60. As shown in FIG. 2, the reflecting portion 60 has a Y-direction center CE at the connection portion 22 </ b> C as a vertex in the rear view, and is directed toward the −Y direction side and the + Y direction side from the center CE. A pair of reflecting surfaces 62 and 63 that incline so as to be separated from the −Z direction side.

  For this reason, the light from the bulb 12 is reflected to the lens 40 by the reflecting surface 62 on the −Y direction side of the Y-direction center CE in the connecting portion 22C. On the other hand, the light from the bulb 13 is reflected to the lens 40 by the reflecting surface 63 on the + Y direction side of the center CE in the Y direction at the connecting portion 22C.

  Thereby, the region irradiated from the bulb 12 to the lens 40 and the region irradiated from the bulb 13 to the lens 40 are shared by one side and the other side with respect to the Y-direction center CE in the connecting portion 22C. The partial overlap of the light from 12 and the light from the bulb 13 can be suppressed.

  Further, the reflection surfaces 62 and 63 are close to the lens 40 on the side away from the bulbs 12 and 13 (Y direction center side). For this reason, the intensity of light that becomes weaker as the distance from the bulbs 12, 13 is corrected.

  As described above, unevenness of light irradiated from the bulbs 12 and 13 to the lens 40 can be suppressed, and furthermore, the generation of shadow SH on the inner surface of the lens 40 can be suppressed. As described above, in this embodiment, since the unevenness of light and the generation of the shadow SH can be suppressed without increasing the number of valves as described above, the cost can be reduced.

  Further, in the present embodiment, the light from the bulbs 12 and 13 is reflected by the reflecting surfaces 62 and 63, so that the light from the −Z direction side (side facing the lens cut 42) with respect to the lens cut 42 of the lens 40. Therefore, the generation of the shadow SH can be effectively suppressed. Furthermore, in this embodiment, light that does not travel from the bulbs 12 and 13 to the lens 40 (for example, light that travels toward the facing wall 27 of the housing 20) is reflected by the reflecting portion 60 to the lens 40. The lens 40 can be efficiently irradiated to the lens 40.

  The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made without departing from the spirit of the present invention.

10. Vehicle map lamps 12, 13 Bulb (an example of a light source)
20 housing 22 accommodation space 22A, 22B accommodation part 22C connection part 30 structure part 40 lens 60 reflection part 62, 63 reflection surface

Claims (1)

A pair of light sources arranged at intervals in a predetermined arrangement direction;
A structure disposed between the pair of light sources;
A pair of receiving portions formed along the orthogonal direction orthogonal to the arrangement direction on both sides of the arrangement direction with respect to the structure portion in plan view, and one end of the accommodation portion in the orthogonal direction A housing formed with a U-shaped accommodation space in plan view having a coupling portion that couples the parts;
A U-shaped lens in plan view that covers the housing space and transmits light emitted from the light source to the outside;
A reflection part having a pair of reflection surfaces that are inclined from the center toward the one side and the other side of the arrangement direction from the center in the arrangement direction in the connection portion in the rear view. When,
A vehicle map lamp comprising: