JP2020185839A - Vehicular lighting fixture - Google Patents

Abstract

To provide a vehicular lighting fixture which can be mounted with a simple work and enables light irradiation according to application thereof.SOLUTION: A vehicular lighting fixture includes a light-emitting element (16), a substrate (15) mounted with the light-emitting element (16), a substrate-mounting surface (14) that allows the substrate (15) to be mounted thereon, and an elongated body part (11) having a fitting surface (12) positioned on a back side of the substrate-mounting surface (14). The substrate-mounting surface (14) is inclined with respect to the fitting surface (12) at an inclination angle of less than 45 degrees in an inclination direction. The substrate-mounting surface (14) is formed offset in the inclined direction from the center in a width direction of the body part (11).SELECTED DRAWING: Figure 1

Description

The present invention relates to a vehicle lighting fixture, and more particularly to a vehicle lighting fixture installed in a luggage compartment of a vehicle.

In a vehicle for freight transportation, it is common to install a lighting device in the luggage compartment in order to ensure visibility of the work area when working in the luggage compartment. In particular, for large trucks, the luggage compartment is rectangular with a large aspect ratio, and there is a demand for a lighting device that can effectively irradiate the entire luggage compartment with light.

As a vehicle lamp that irradiates light in the luggage compartment of such a vehicle, one in which light emitting diodes are arranged along the corners of the ceiling and side walls of the luggage compartment has been proposed (for example, Patent Documents 1 and 2 and the like). See). In the vehicle lamps described in Patent Documents 1 and 2, a reinforcing member is attached along the corner portion where the ceiling and the side wall intersect, a bracket is attached to the reinforcing member, and then the circuit board on which the light emitting diode is mounted is held by the bracket. doing.

In such a conventional technique, since the light emitting diodes can be arranged in the longitudinal direction of the luggage compartment along the corner portion, the entire area of the luggage compartment can be satisfactorily irradiated with light. Further, in a state where the left and right halves of the luggage compartment are flipped up in a wing shape, light can be applied to the lower region of the wing.

Utility Model Registration No. 3172881 JP-A-2018-127168

9A and 9B are diagrams schematically showing lighting in a luggage compartment using a conventional vehicle lamp, FIG. 9A shows a state in which the wing body is closed, and FIG. 9B shows a wing body. Indicates the open state. As shown in FIGS. 9A and 9B, the conventional vehicle lamp L is attached to the corner portion of the wall surface and the ceiling surface at an angle of about 45 degrees in the luggage compartment of the truck T. Therefore, when the wing body is closed, light is radiated to the wall surface on the opposite side, and even when the wing body is open, light is radiated to the outside of the luggage compartment at an angle of about 45 degrees.

However, in the vehicle lamps of Patent Documents 1 and 2, in order to attach the circuit board on which the light emitting diode is mounted to the corner portion, it is necessary to use a dedicated reinforcing member or bracket, which causes a problem that the number of parts increases. In addition, the work of removing the existing reinforcing member and the work of attaching a dedicated reinforcing member or bracket are required, and the installation work is also complicated.

Further, the usage environment of the truck T provided with the wing body is various, and even when it is preferable to irradiate the light farther from the luggage compartment with the wing body open, the light is emitted to the luggage compartment and the vicinity of the vehicle. Irradiation may be preferred. In the conventional vehicle lamp L shown in FIGS. 9A and 9B, the light irradiation angle and range are fixed at 45 degrees, so that the light irradiation angle and light irradiation suitable for the usage of the truck T are used. It was difficult to achieve the range.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a vehicle lamp that can be attached by a simple operation and can be irradiated with light according to the intended use.

In order to solve the above problems, the vehicle lamp of the present invention includes a light emitting element, a substrate on which the light emitting element is mounted, a substrate mounting surface on which the substrate is mounted, and a mounting surface located on the back side of the substrate mounting surface. The substrate mounting surface is inclined at an inclination angle of less than 45 degrees in the inclination direction with respect to the mounting surface, and the board mounting surface is inclined from the center in the width direction of the main body portion. The substrate mounting surface is formed so as to be biased in the inclined direction.

In such a vehicle lamp of the present invention, the substrate mounting surface is inclined at an inclination angle of less than 45 degrees with respect to the mounting surface, and is formed so as to be deviated from the center in the width direction of the main body, so that a simple operation is required. It can be attached and can be irradiated with light according to the intended use.

Further, in one aspect of the present invention, the inclination angle is in the range of 25 degrees or more and less than 30 degrees.

Further, in one aspect of the present invention, a mounting recess is formed on the mounting surface.

Further, in one aspect of the present invention, the mounting recess is formed so as to be biased from the center in the width direction of the main body portion to the side opposite to the inclination direction.

Further, in one aspect of the present invention, the mounting recess is formed over the entire longitudinal direction of the main body.

Further, in one aspect of the present invention, the light diffusing cover is provided on the light emitting surface side of the light emitting element, and the light diffusing cover is arranged non-parallel to the substrate.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a vehicle lamp that can be attached by a simple operation and can be irradiated with light according to the intended use.

It is a figure which shows the outline of the vehicle lamp 1 which concerns on 1st Embodiment, FIG. 1 (a) is a top view, and FIG. 1 (b) is a side view of an end cap 20. It is a schematic cross-sectional view which shows the structure of the main body part 10 which concerns on 1st Embodiment. It is a schematic sectional drawing which shows the positional relationship of the mounting surface 12, the mounting recess 13, and the board mounting surface 14 in the main body 10. It is a schematic diagram which shows the inside of the luggage compartment 100 with the vehicle lamp 1 attached. It is a figure which shows typically the lighting of the luggage compartment using the vehicle lamp 1, FIG. 5A shows the state which the wing body is closed, and FIG. 5B shows the state which the wing body is open. There is. It is a schematic diagram which shows the mounting structure of the vehicle lamp 1 using the connecting cover 70 which concerns on 2nd Embodiment. It is a figure which shows typically the structure of the connection cover 70, FIG. 7A is a top view, FIG. 7B is a side view, and FIG. 7C is a positional relationship with a vehicle lamp 1. FIG. 7 (d) is a diagram seen from the back surface side. It is a schematic view which shows the mounting structure of the vehicle lamp 1 using the mounting bracket 80 which concerns on 3rd Embodiment, FIG. 8A is a partially enlarged view, and FIG. 8B is a side view. It is a figure which shows typically the lighting of the luggage compartment using the conventional vehicle lamp, FIG. 9A shows the state which the wing body is closed, and FIG. 9B shows the state which the wing body is open. Shown.

(First Embodiment)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same or equivalent components, members, and processes shown in the drawings shall be designated by the same reference numerals, and redundant description will be omitted as appropriate. 1A and 1B are views showing an outline of a vehicle lamp 1 according to the present embodiment, FIG. 1A is a top view, and FIG. 1B is a side view of an end cap 20. As shown in FIGS. 1A and 1B, the vehicle lamp 1 has a main body 10, an end cap 20, a wiring cord 30, and a terminal 40.

The main body 10 is a long member of the vehicle lamp 1, the front surface side thereof is in the light emitting direction, and end caps 20 are attached to both sides along the longitudinal direction. In FIG. 1, a flat plate-shaped body portion 10 is shown, but the shape is not limited as long as a light emitting element can be mounted as described later. The size of the main body 10 is not limited, but is, for example, a width of about 10 mm to 30 mm and a length of about 500 mm to 2000 mm.

The end cap 20 is a member made of resin and closes the end portion of the main body portion 10. A part of the end cap 20 is inserted inside the main body 10, and a cord lead-out hole from which the wiring cord 30 is pulled out and a screw hole for fixing are formed. The end cap 20 is attached by aligning the end cap 20 with the end of the main body 10 and inserting a screw into a screw hole provided in the attachment portion 21 integrated with the end cap 20 and screwing the end cap 20. ..

The wiring cord 30 is a member that supplies electric power from the outside of the vehicle lamp 1 to the light emitting element mounted on the main body 10. The specific structure of the wiring cord 30 is not limited, but has flexibility enough to be bent.

The terminal portion 40 is a terminal member attached to the wiring cord 30. By connecting the terminal portion 40 to and from the terminal portion 40 provided on another vehicle lighting fixture 1, it is possible to electrically connect a plurality of vehicle lighting fixtures 1.

FIG. 2 is a schematic cross-sectional view showing the structure of the main body portion 10 according to the first embodiment. As shown in FIG. 2, the main body 10 includes a housing 11, a mounting surface 12, a mounting recess 13, a substrate mounting surface 14, a substrate 15, a light emitting element 16, a sealing resin 17, and a light diffusion cover. It has 18.

The housing 11 is a long member that holds each part, and a mounting surface 12 and a mounting recess 13 are formed on the back surface side, and a substrate mounting surface 14 is formed on the front surface side. The substrate 15 is mounted on the substrate mounting surface 14, and the light diffusion cover 18 is attached so as to cover the light emitting element 16 and the sealing resin 17. As the material constituting the housing 11, it is preferable to use a material having rigidity capable of holding each part well, being lightweight and having excellent heat dissipation, and for example, aluminum is preferably used.

The mounting surface 12 is a flat surface formed on the back surface side of the housing 11, and is a surface that comes into contact with the ceiling or wall surface of the luggage compartment when the vehicle lamp 1 is mounted. Here, an example is shown in which a flat surface is formed over the entire back surface side of the housing 11 as the mounting surface 12, but the shape is not limited as long as a part of the back surface side is formed as a flat surface. Further, a mounting recess 13 is formed in a part of the mounting surface 12.

The mounting recess 13 is a recess formed along the mounting surface 12 and is a portion for fixing the vehicle lamp 1 to the ceiling or wall. The size of the mounting recess 13 is not particularly limited, but the size is such that a fixing member such as a screw or a grommet can be surrounded or inserted. The shape of the mounting recesses 13 is not limited, and may be formed at a plurality of locations along the longitudinal direction of the housing 11, or may be formed as continuous grooves along the longitudinal direction, and the vehicle lamp 1 may be formed. It is set so that sufficient mechanical strength can be secured when it is installed.

The substrate mounting surface 14 is an inclined surface formed in a recess formed along the longitudinal direction on the surface side of the housing 11. The substrate 15, the light emitting element 16, and the sealing resin 17 are mounted on the substrate mounting surface 14.

The substrate 15 is a long flat plate member having a wiring pattern formed on its surface, and a light emitting element 16 is electrically connected to the wiring pattern and mounted. Further, a sealing resin 17 is formed on the surface of the substrate 15 so as to surround the light emitting element 16. The material constituting the substrate 15 is not limited, and a glass epoxy resin used for a normal printed wiring board, a material having an insulating layer formed on a metal substrate, or the like can be used. As shown in FIG. 2, the back surface of the substrate 15 is arranged in contact with the substrate mounting surface 14. Since the substrate 15 and the substrate mounting surface 14 are in contact with each other, the heat generated by the light emission of the light emitting element 16 is transferred to the substrate 15, the housing 11, and the mounting surface 12, and can be satisfactorily dissipated.

The light emitting element 16 is an electronic component that emits light having a predetermined wavelength by applying a voltage, and is composed of, for example, a light emitting diode. In the present embodiment, an example in which a light emitting diode is used as the light emitting element 16 is shown, but it may be an organic EL element or the like as long as it is mounted on the substrate mounting surface 14 and emits light. The light emitted by the light emitting element 16 is not limited, and can be set according to the application of the vehicle lamp 1 such as white, red, and amber.

The sealing resin 17 is a resin layer formed on the substrate 15, and is formed so as to surround the light emitting element 16. The material constituting the sealing resin 17 is not limited, and it is preferable to use a white resin mixed with light scattering particles in order to reflect light well. Although FIG. 2 shows an example in which the sealing resin 17 is provided only around the light emitting element 16, the sealing resin 17 is formed in a multilayer structure, and the light emitting surface side of the light emitting element 16 is covered with a transparent resin. May be good.

The light diffusion cover 18 is a member attached along the longitudinal direction of the housing 11 so as to cover the light emitting element 16. The material constituting the light diffusion cover 18 is not limited, but it is necessary to use a material that transmits light, and for example, a resin such as polycarbonate can be used. Further, the light diffusion cover 18 may have a lens shape or a light scattering structure. As shown in FIG. 2, the light diffusion cover 18 is arranged non-parallel to the substrate 15.

The broken line shown in FIG. 2 schematically shows the path of the light emitted from the light emitting element 16. A part of the light emitted from the light emitting element 16 reaches the light diffusion cover 18 directly and is scattered, and the other part is reflected by the inner wall of the recess in which the substrate mounting surface 14 is formed and then on the light diffusion cover 18. Reach and scatter. By arranging the light diffusion cover 18 and the substrate 15 in a non-parallel manner, the amount of light reflected by the inner wall increases. Therefore, by appropriately setting the angle between the light diffusion cover 18 and the substrate 15, the vehicle lamp 1 can be used. The irradiation range of the extracted light can be designed to a desired range.

FIG. 3 is a schematic cross-sectional view showing the positional relationship between the mounting surface 12, the mounting recess 13, and the board mounting surface 14 in the main body 10. As shown in FIG. 3, the substrate mounting surface 14 is formed so as to be inclined by an inclination angle θ with respect to the mounting surface 12. The range of the inclination angle θ is preferably less than 45 degrees, more preferably 25 degrees or more and less than 30 degrees. When the vehicle lamp 1 is mounted in the luggage compartment of the vehicle, the tilt angle is within this range, and the light irradiation angle and the light irradiation range can be appropriately set by selecting the mounting direction.

In FIG. 3, the alternate long and short dash line A indicates the center position in the width direction of the housing 11, the alternate long and short dash line B indicates the center position in the width direction of the substrate mounting surface 14, and the alternate long and short dash line C indicates the center position in the width direction of the mounting recess 13. Indicates the position. Since the width of the housing 11 and the width of the main body 10 are substantially the same, the alternate long and short dash line A is also the center position in the width direction of the main body 10. As shown in FIG. 3, the substrate mounting surface 14 is formed so as to be biased in the inclined direction of the substrate mounting surface 14 so that the center position B is different from the center position A of the housing 11. Further, the mounting recess 13 is formed so as to be biased toward the side opposite to the inclined direction of the substrate mounting surface 14 so that the center position C is different from the center position A of the housing 11.

By arranging the center positions of the mounting recess 13 and the board mounting surface 14 so as to be offset in opposite directions from the center of the housing 11, the housing 11 can secure the space between the inclined board mounting surface 14 and the mounting recess 13. It is possible to reduce the thickness of the. Further, since the thickness of the housing 11 between the mounting recess 13 and the substrate 15 can be secured, the housing 11 made of aluminum or the like having good thermal conductivity can be used as a heat sink, and the heat dissipation can be improved. Can be done.

The vehicle lamp 1 is attached to the vehicle by bringing the mounting surface 12 into contact with the ceiling surface or the wall surface of the luggage compartment and fixing the lamp with the fixture. Examples of the fixture for attaching the vehicle lamp 1 include attaching a double-sided tape to the attachment surface 12 and applying an adhesive. Further, a member such as a grommet may be attached to the ceiling surface or the wall surface and fitted into the attachment recess 13. By using these fixtures, the vehicle lamp 1 can be easily attached to the luggage compartment. Further, since the mounting surface 12 and the mounting recess 13 are formed along the longitudinal direction of the housing 11, the mounting surface 12 and the mounting recess 13 are strong even when the vehicle lamp 1 is mounted at a position where vibration is applied, such as in the luggage compartment of a vehicle. The vehicle lamp 1 can be fixed to the vehicle.

FIG. 4 is a schematic view showing the inside of the luggage compartment 100 with the vehicle lamp 1 attached. FIG. 4 shows an example in which the vehicle lamp 1a is attached to the wall surface 50 of the luggage compartment 100 and the vehicle lamp 1b is attached to the ceiling surface 60. The range of light emitted from the respective vehicle lamps 1a and 1b is the direction indicated by the broken line and the arrow in the figure. Therefore, when the vehicle lamp 1a is attached to the wall surface 50, the substrate mounting surface 14 is oriented so as to be located on the lower side, so that the entire area inside the luggage compartment 100 can be irradiated with light. Further, when the vehicle lamp 1b is attached to the ceiling surface 60, the substrate mounting surface 14 is oriented so as to be located on the center side of the luggage compartment, so that the entire area inside the luggage compartment 100 can be irradiated with light.

5A and 5B are views schematically showing lighting in the luggage compartment using the vehicle lamp 1, FIG. 5A shows a state in which the wing body is closed, and FIG. 5B shows a state in which the wing body is opened. It shows the state. The hatched region in the figure indicates a region where the intensity of the light emitted by the vehicle lamps 1a and 1b is high.

As shown in FIGS. 5A and 5B, the vehicle lamp 1a attached to the wall surface of the wing body irradiates strong light toward the opposite wall surface in the luggage compartment 100 when the wing body is closed. .. Further, when the wing body is open, the vehicle lamp 1a irradiates the inside of the open luggage compartment 100 and the vicinity of the vehicle with strong light. On the other hand, the vehicle lamp 1b attached to the ceiling surface of the wing body irradiates a strong light toward the floor surface in the luggage compartment 100 when the wing body is closed. Further, when the wing body is open, the vehicle lamp 1b irradiates the side of the vehicle with strong light.

Such a light irradiation range is determined by the inclination angle θ of the substrate mounting surface 14 of the vehicle lamps 1a and 1b, the angle formed by the light diffusion cover 18 and the substrate 15, and the like. Therefore, the user of the vehicle lamp 1 can select an appropriate light irradiation range according to the application of the vehicle only by selecting the mounting position and orientation.

As described above, in the vehicle lamp 1 of the present embodiment, the substrate mounting surface 14 on which the substrate 15 is mounted is inclined at an inclination angle of less than 45 degrees in the inclination direction with respect to the mounting surface 12, and the main body portion 10 Since it is formed so as to be biased from the center in the width direction to the inclination direction, it can be attached by a simple operation and light irradiation according to the intended use becomes possible.

(Second Embodiment)
Next, the second embodiment of the present invention will be described with reference to FIGS. 6 and 7. The description of the contents overlapping with the first embodiment will be omitted. FIG. 6 is a schematic view showing a mounting structure of a vehicle lamp 1 using the connecting cover 70 according to the present embodiment. 7A and 7B are views schematically showing the structure of the connecting cover 70, FIG. 7A is a top view, FIG. 7B is a side view, and FIG. 7C is a vehicle lamp 1 It is a schematic view showing the positional relationship with, and FIG. 7D is a view seen from the back surface side.
As shown in FIG. 6, in the present embodiment, a plurality of vehicle lamps 1 are connected by a wiring cord 30 and a terminal portion 40, and a connecting cover 70 is arranged between them. As shown in FIG. 7, the connecting cover 70 includes a case portion 71, a sticking portion 72, a connecting surface 73, a wiring hole 74, and a double-sided tape 75.

The case portion 71 is a box-shaped portion formed with a predetermined height and width and a volume. The material constituting the case portion 71 is not limited, but it is preferable to use a resin material in order to reduce the weight. The case portion 71 is formed with a sticking portion 72 folded inward, and a connecting surface 73 is formed on the side. The sticking portion 72 is a plate-shaped portion integrally formed with the case portion 71, and is a portion that is attached in contact with the luggage compartment 100 of the vehicle. The connecting surface 73 is a portion integrally formed on the side of the case portion 71, and is a portion that is adjacent to the side surface of the vehicle lamp 1 and closes the inside of the case portion 71. The wiring hole 74 is a hole provided in the connecting surface 73, and is for introducing the wiring cord 30 from the outside to the inside of the case portion 71. The double-sided tape 75 is a member having adhesive layers formed on both sides attached to the back surface side of the attaching portion 72, and is a member for attaching the connecting cover 70 to the wall surface or the ceiling surface of the luggage compartment 100.

The wiring cord 30 and the terminal portion 40 are connected by attaching a plurality of vehicle lamps 1 to the wall surface or the ceiling surface of the luggage compartment 100 and attaching a connecting cover 70 so as to cover the wiring cord 30 and the terminal portion 40 between them. It is housed and concealed on the back side or inside of the cover 70. Here, as shown in FIG. 6, the connecting cover 70 is provided so that the distance P between the light emitting elements 16 in the vehicle lamp 1 is equal to the distance P between the light emitting elements 16 adjacent to each other with the connecting cover 70 in between. By setting the length, the sense of unity of the plurality of vehicle lamps 1 is enhanced.

Although FIG. 7 shows an example in which the connecting surface 73 and the wiring hole 74 are provided on the side of the case portion 71, the entire side of the case portion 71 may be used as an opening. Further, FIG. 7 shows an example of a rectangular parallelepiped having a rectangular cross section and the same width as the main body 10 of the vehicle lamp 1, but when the cross-sectional shape is approximated to the main body 10 of the vehicle lamp 1, the vehicle lamp is used. It is preferable because it can enhance the sense of unity with 1. Further, it is preferable that the case portion 71 is made of the same material as the housing 11 of the vehicle lighting fixture 1 because the sense of unity with the vehicle lighting fixture 1 can be enhanced.

(Third Embodiment)
Next, the third embodiment of the present invention will be described with reference to FIG. The description of the contents overlapping with the first embodiment will be omitted. 8A and 8B are schematic views showing a mounting structure of a vehicle lamp 1 using the mounting bracket 80 according to the present embodiment, FIG. 8A is a partially enlarged view, and FIG. 8B is a side view. is there.

In the first embodiment, an example in which the mounting portion 21 is integrally formed with the end cap 20 is shown, but in the present embodiment, the mounting bracket 80 is inserted into the mounting recess 13 from both ends of the main body portion 10. As shown in FIG. 1 (b), the end cap 20 is also formed with an opening having a position and shape corresponding to the mounting recess 13. The mounting bracket 80 is a long metal plate, and can be inserted into the mounting recesses 13 formed continuously along the longitudinal direction of the housing 11. Further, an opening for driving a screw, a screw, or the like is formed in the surface of the mounting bracket 80. Before mounting the vehicle lamp 1 on the wall surface or ceiling surface of the luggage compartment 100, the mounting bracket 80 is housed in the mounting recess 13, but during the mounting work, it slides in the mounting recess 13 and is tipped from the end cap 20. Is pulled out. By partially pulling out the tip of the mounting bracket 80, the vehicle lamp 1 can be fixed by driving the screw or screw into the opening of the mounting bracket 80 using a screw or screw.

Also in this embodiment, the mounting recess 13 is formed over the entire longitudinal direction of the main body portion 10, and as in the first embodiment, a fixing member such as double-sided tape or a grommet is used in combination to easily and surely use a vehicle lamp. 1 can be fixed.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

1,1a, 1b ... Vehicle lamp 10 ... Main body 100 ... Luggage room 11 ... Housing 12 ... Mounting surface 13 ... Mounting recess 14 ... Board mounting surface 15 ... Board 16 ... Light emitting element 17 ... Sealing resin 18 ... Light diffusion Cover 20 ... End cap 21 ... Mounting part 30 ... Wiring cord 40 ... Terminal part 50 ... Wall surface 60 ... Ceiling surface 70 ... Connecting cover 71 ... Case part 72 ... Attaching part 73 ... Connecting surface 74 ... Wiring hole 75 ... Double-sided tape 80 ... Mounting bracket

Claims (6)

Light emitting element and
The substrate on which the light emitting element is mounted and
A long main body having a board mounting surface on which the board is mounted and a mounting surface located on the back side of the board mounting surface is provided.
The board mounting surface is inclined at an inclination angle of less than 45 degrees in the inclination direction with respect to the mounting surface.
A vehicle lamp, characterized in that the substrate mounting surface is formed so as to be biased in the inclined direction from the center in the width direction of the main body portion. The vehicle lighting fixture according to claim 1.
A vehicle lamp whose inclination angle is in the range of 25 degrees or more and less than 30 degrees. The vehicle lamp according to claim 1 or 2.
A vehicle lighting fixture characterized in that a mounting recess is formed on the mounting surface. The vehicle lighting fixture according to claim 3.
The mounting recess is formed so as to be biased from the center in the width direction of the main body portion to the side opposite to the inclination direction. The vehicle lamp according to claim 3 or 4.
A vehicle lamp, wherein the mounting recess is formed over the entire longitudinal direction of the main body. The vehicle lamp according to any one of claims 1 to 5.
A light diffusion cover arranged on the light emitting surface side of the light emitting element is provided.
The light diffusing cover is a vehicle lamp that is arranged non-parallel to the substrate.