JP6566415B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp that can be used as a roadside lamp provided on the side of a vehicle such as a truck or a vehicle height lamp provided at the rear of the vehicle.

  Conventionally, there is a side light that is attached to the side of the cargo carrier's cargo bed to improve the visibility of the cargo bed from other vehicles at night and to make it easier for the self-driver to check the cargo bed position on the road. Are known.

  As such a conventional side lamp, Patent Document 1 proposes a side marker in which a reflector and a lamp are combined. Patent Document 2 proposes a vehicular lighting fixture that can use both a side lamp and a shoulder lamp using an LED as a light source.

  However, since the light distribution characteristics of the LED light source are highly directional, the vehicle lighting device proposed in Patent Document 2 provides sufficient light only to the side or below when only one LED light source is used. It could not be irradiated and could only be used as either a shoulder lamp or a side lamp. For this reason, in Patent Document 2, two LED light sources are prepared, and the side lamp and the shoulder lamp are combined by irradiating the side and the lower respectively. In addition, since the LED light source used as a side lamp is arranged on the side surface close to the light emitting surface, the amount of light irradiated upward is insufficient, and it is difficult for the driver to check the platform position of the vehicle. There was also a problem.

  In addition, because the inner lens and outer lens are configured by combining rectangular planes, the strength when force is applied in each plane direction is insufficient, and the overall strength of the vehicle lighting fixture is improved. It was necessary to take measures.

JP 2004-155389 A Utility Model Registration No. 3187163

  The present invention has been made in view of the above-described conventional problems, and it is possible to easily confirm the position of the loading platform from the self-operator while using both the side lamp and the road shoulder lamp, and to improve the strength. It is an issue to provide.

In order to solve the above problems, a vehicle lamp according to the present invention is a vehicle lamp including a body part, a light source part mounted on the body part, and an optical member provided to cover the light source part. The optical member includes a side emitting part and a vertical emitting part, and the area of the side emitting part is smaller than that of the vertical emitting part. Ri polyhedral der which the are connected via the ridge parts, the curved surface portion includes a first step of concave or convex shape formed with a plurality, in the planar portion, said first step A plurality of concave or convex second steps having different pitches are formed .

  In such a vehicular lamp according to the present invention, the vertical emitting part of the optical member is configured in a multi-surface shape in which the curved surface part and the flat part are connected, and the area of the side emitting part is smaller than the vertical emitting part. The strength of the vehicular lamp is improved. In addition, since the area of the vertical emission part is larger than that of the side emission part, it is possible to easily confirm the loading platform position from the self-driver while using both the side lamp and the roadside lamp.

  In one embodiment of the present invention, the first step and the second step are formed by extending in the same direction.

  In one embodiment of the present invention, the up-and-down direction emitting portion has a first portion and a second portion facing each other with the side-direction emitting portion interposed therebetween, and the surface on which the light source portion of the body portion is mounted. The angle formed by the flat portion of the first portion and the main direction is larger than the angle formed by the flat portion of the second portion and the main direction.

In one embodiment of the present invention, the optical member includes a colored portion that colors and transmits light from the light source portion at least in part, and the planar portion of the second portion includes the main direction. A non-colored transmission part is provided that transmits a part of the light emitted in the intersecting direction without being colored.

  According to the present invention, it is possible to provide a vehicular lamp that can easily confirm the position of the loading platform from the self-operator and can improve the strength while using both the side lamp and the road shoulder lamp.

It is a perspective view which shows the external appearance of the vehicle lamp of 1st Embodiment from diagonally upward. It is a figure which shows the external appearance of a vehicle lamp, (a) is a front view, (b) is a bottom view, (c) is a side view, (d) is a rear view. 1A and 1B are views showing an internal structure of a vehicular lamp, wherein FIG. 1A is a cross-sectional view taken along line AA in FIG. 1, and FIG. 1B is a cross-sectional view taken along line BB in FIG. It is the disassembled perspective view of the vehicle lamp seen from diagonally upward. It is a disassembled perspective view of the vehicle lamp seen from diagonally below. It is the perspective view which looked at the state which attached the inner side lens to the body part from diagonally downward. It is a figure which shows the state which attached the inner side lens to the body part, (a) is a top view, (b) is a front view, (c) is a bottom view, (d) is a side view. It is a perspective view which shows the external appearance of an inner lens from diagonally upward. It is a rear view which shows the inside of an inner lens. FIGS. 8A and 8B are diagrams showing the structure of the inner lens, in which FIG. 8A is a cross-sectional view taken along line AA in FIG. 8, and FIG. 8B is a cross-sectional view taken along line BB in FIG. The figure which shows the external appearance and internal structure of an inner lens, (a) is a perspective view from diagonally upward, (b) is a perspective view which shows the state divided | segmented by the BB line in FIG. FIG. 9C is a perspective view showing a state divided from the line BB in FIG. 8 from the upper surface side. It is a rear view which shows the inside of an outside lens. FIGS. 12A and 12B are diagrams showing the structure of the outer lens, wherein FIG. 12A is a cross-sectional view taken along the line AA in FIG. 12, and FIG. It is a perspective view which shows the state which divided | segmented the outer side lens by the BB line in FIG. It is a schematic diagram which shows the structural example of the light source of 2nd Embodiment. The figure which shows the external appearance and internal structure of the inner lens used for the vehicle lamp of 3rd Embodiment, (a) is a perspective view from diagonally upward, (b) is the perspective view which shows the state divided | segmented in the center from the bottom face side It is a figure and (c) is a perspective view which shows the state divided | segmented in the center from the upper surface side.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the appearance of the vehicular lamp 1 according to the first embodiment obliquely from above. 2A and 2B are views showing the appearance of the vehicular lamp 1. FIG. 2A is a front view, FIG. 2B is a bottom view, FIG. 2C is a side view, and FIG. d) is a rear view.

  As shown in FIGS. 1 and 2, the vehicular lamp 1 is unitized with an outer lens 20 assembled to a body portion 10. Here, the side where the outer lens 20 is attached to the body portion 10 is the front surface, and the opposite side of the outer lens 20 is the rear surface. Further, when viewed from the vehicle to which the vehicle lamp 1 is attached, the front, rear, left and right outer directions are the side surfaces of the vehicle lamp 1, and the vertical direction of the vehicle is the vertical direction of the vehicle lamp 1. In the present embodiment, the vehicular lamp 1 is attached to a side surface of a loading platform such as a cargo vehicle so that a side lamp and a shoulder lamp can be used together.

  The body portion 10 is a substantially plate-like member on which the respective members constituting the vehicular lamp 1 are mounted on the front side, and a fixing portion for the mounting portion of the vehicle is provided on the back side. The shape of the body 10 viewed from the back is two straight portions that are substantially parallel to the left and right direction, a curved portion that tapers toward the left and right ends, and two straight portions that are substantially parallel to the vertical direction. The maximum width of the curved portion is wider than the straight portion in the left-right direction. Although the shape of the body part 10 is not specifically limited, It is preferable from a viewpoint of size reduction that it is a shape substantially similar to the back side of the outer lens 20. FIG. The material constituting the body portion 10 is not limited as long as it has strength as the vehicular lamp 1 attached to the outside of the vehicle, but various resins are preferably used from the viewpoint of ease of molding and weight reduction. .

  The outer lens 20 has a flat dome shape, and is an optical member that covers the internal structure of the vehicle lamp 1 to be described later and is attached to the body portion 10 and transmits visible light from the inside. The material constituting the outer lens 20 is not limited as long as it transmits visible light satisfactorily. However, a resin material is preferable from the viewpoint of ease of molding and weight reduction, and in particular, an acrylic resin has strength and weather resistance. It is further preferable.

  As shown in FIGS. 1 and 2, the outer lens 20 has a side emitting portion 21, an upper curved surface portion 22, an upper flat surface portion 23, a lower curved surface portion 24, and a lower flat surface portion 25 that are integrally formed. Has been. As a method of integrally forming these surfaces, a known resin molding method using a mold can be used, and all surfaces may be molded at once, or after each surface is molded, the surfaces are joined. Alternatively, various methods may be used, such as splitting right and left and joining. Further, the back side of the outer lens 20 has a shape substantially similar to the outer shape of the body portion 10, and the end portion on the plane side is fixed to and in contact with the body portion 10.

  The side-direction emitting portion 21 is a surface that emits light in the lateral direction of the vehicle, and a belt-like plane is continuously formed so as to form a rounded trapezoid with respect to the body portion 10 when viewed from the top surface or the bottom surface. Surface. Here, an example of a rounded trapezoid is shown, but any surface that emits light in the lateral direction of the vehicle may be used, and the shape is not limited, and may be a semi-elliptical shape or a polygonal shape. Moreover, although the example which formed the strip | belt-shaped plane continuously was shown, as the surface which radiates | emits light, it is not limited to a plane, The uneven | corrugated process for scattering light may be given, and even if it is a curved surface, Good. Moreover, emitting light in the side direction of the vehicle means that the light emitted from the inside is a light distribution mainly directed toward the front, rear, left, and right outer directions of the vehicle, and all light is emitted in the side direction. Just doesn't mean. Here, it is assumed that the vehicular lamp 1 is attached to the side surface of the vehicle and the side emitting portion 21 is directed horizontally from the vehicle, but the vehicular lamp 1 is attached with a predetermined angle shifted from the horizontal direction. In this case, the side emitting part 21 and the light emitting direction are also inclined from the horizontal direction accordingly.

  The upper curved surface portion 22 is a curved surface formed continuously from the upper edge of the side emitting portion 21 to the outer edge of the upper flat surface portion 23, and the edge portion is in contact with the body portion 10 on the back side. The curved surface of the upper curved surface portion 22 is a curved surface shape that is convex outward and has a tapered shape in which the inclination angle increases toward the side emitting portion 21.

  The upper plane portion 23 includes a plane portion inclined in the side surface direction from the back side, and is provided at a position where the plane portion is recessed with respect to the upper curved surface portion 22. At the outer edge of the flat surface portion of the upper flat surface portion 23, a tapered portion 23a is provided so as to be continuous with the upper curved surface portion 22, and is connected to the upper curved surface portion 22 by forming a ridge line. Moreover, the edge part is contacting the body part in the back side of the upper side plane part 23. FIG.

  The lower curved surface portion 24 is a curved surface formed continuously from the lower edge of the side emitting portion 21 to the outer edge of the lower flat surface portion 25, and the edge portion is in contact with the body portion 10 on the back surface side. . The curved surface of the lower curved surface portion 24 is a curved surface shape that protrudes outward, and has a tapered shape in which the inclination angle increases toward the side emitting portion 21.

  The lower flat surface portion 25 includes a flat surface portion inclined in the side surface direction from the back surface side, and is provided at a position where the flat surface portion is recessed with respect to the lower curved surface portion 24. A tapered portion 25a is provided at the outer edge of the flat portion of the lower flat surface portion 25 so as to be continuous with the lower curved surface portion 24, and is connected to the lower curved surface portion 24 by forming a ridge line. Moreover, the edge part is contacting the body part in the back side of the lower side plane part 25. FIG. Here, the upper curved surface portion 22 and the upper flat surface portion 23 and the lower curved surface portion 24 and the lower flat surface portion 25 have a shape having a step, but it is not necessary to have a positional relationship with the step, and the ridgeline As long as they are connected.

  The upper curved surface portion 22 and the upper flat surface portion 23 form a polyhedral shape connected via a ridgeline, and function as an upward emitting portion that emits light upward from the vehicular lamp 1. Similarly, the lower curved surface portion 24 and the lower flat surface portion 25 also have a polyhedral shape connected via a ridgeline, and function as a downward emitting portion that emits light downward from the vehicular lamp 1. The upward emitting part and the downward emitting part are provided to face each other with the side emitting part 21 interposed therebetween, and constitute an upward emitting part.

  As shown in FIGS. 1 and 2, the side emitting part 21 is a band-like surface that forms a rounded trapezoidal shape with respect to the body part 10, and has a larger area than the upper emitting part and the lower emitting part. It is formed small.

  As described above, the vertical emitting part of the outer lens 20 that is an optical member is formed in a polyhedral shape in which the curved surface part and the flat part are connected, and the area of the side emitting part 21 is the upward emitting part and the downward direction. It is smaller than the emission part. Thereby, the intensity | strength of the outer side lens 20 improves rather than comprising an optical member only by a plane. In addition, since the area of the vertical emission part is larger than that of the side emission part 21, the amount of light emitted upward and downward can be secured as will be described later, and the self-driving driver can be used while using both the side light and the shoulder lamp. The loading platform position can be easily confirmed.

  3 is a diagram showing the internal structure of the vehicular lamp 1. FIG. 3A is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3B is a cross-sectional view taken along line BB in FIG. It is sectional drawing in a line. The body unit 10 includes a substrate unit 11, a fixing unit 12, and a light source holding unit 13, and holds the circuit board 14, the light source unit 15, the inner lens 30, and the outer lens 20.

  The board part 11 is a substantially flat part for mounting each member, a fixing part 12 for fixing to the vehicle side is provided on the back side, and a light source holding part to which the light source part 15 is attached on the front side. 13 is erected. In addition, a connection hole is formed at a substantially central position of the substrate portion 11 to draw out the wiring connected to the circuit board 14 to the outside.

  The circuit board 14 is a member that is mounted on the board unit and includes a drive circuit that supplies power to the light source unit 15. Electric power and a control signal are input to the circuit board 14 from the outside via wiring, and the drive circuit supplies a current of a current value and a voltage value suitable for light emission to the light source unit 15 according to the control signal.

  The light source unit 15 includes a plurality of light emitting elements such as LED chips that emit light according to the current supplied from the circuit board 14, and is fixed to the light source holding unit 13. Although the light emitted from the light source unit 15 may be monochromatic light, it is preferable to use light emitting white light for use as a shoulder lamp. In FIG. 3, the light source unit 15 is shown as a substantially rectangular flat plate member. However, for example, a package having a structure in which an LED chip is mounted on a wiring board and its periphery is sealed with resin can be employed. In a packaged LED, a light distribution characteristic suitable as a side lamp and a shoulder lamp can be realized by applying a light reflecting member or a light scattering member. Here, by setting the light emitted from the light source unit 15 to 300 candela or less, it is handled as other lighting or the like according to laws and regulations, so any light distribution is possible. Here, an example using an LED chip as the light source unit 15 is illustrated. However, any light source that can be used for illumination purposes may be used. For example, an organic EL (Electro Luminescence) light source or a laser light source is used. Also good.

  The light distribution from the light source unit 15 is not particularly limited in its light distribution characteristics, but those having low directivity and capable of irradiating light in all directions are preferable. In particular, it is preferable that the light quantity can be secured for the light emitted in the direction of the side emission part 21 and the light emitted downward, and it is further preferable that the light emitted upward is also included.

  The inner lens 30 has a flat dome shape, and is an optical member that covers the circuit board 14 and the light source unit 15 and is attached on the substrate unit 11, and colors and transmits visible light from the inside. The material constituting the inner lens 30 is not limited as long as it can transmit visible light and is colored. However, a resin material is preferable from the viewpoint of ease of molding and weight reduction, and polycarbonate is more preferable in terms of strength. preferable. A cutout portion 30 a in which no colored resin is present is provided at a position below the light source portion 15 in the inner lens 30. Here, examples of colors that are colored by the inner lens 30 include yellow, green, red, and blue, and exhibit a function as a marker.

  As shown in FIG. 3, in the present embodiment, the two optical members of the outer lens 20 and the inner lens 30 are combined to function as an optical member as a whole. The light emitted from the light source unit 15 is emitted in a direction as indicated by an arrow in the figure, for example. If the main direction is a direction perpendicular to the surface on which the light source unit 15 of the substrate unit 11 is mounted, the main direction is the main light emission direction in which the light quantity is maximum in the light distribution. The light traveling in the main direction and the left-right direction is colored through the inner lens 30 and is irradiated to the outside from the side-direction emitting unit 21. Further, the light traveling to the upward emitting portion is also colored by passing through the inner lens 30 and is irradiated to the outside from the upward emitting portion. A part of the light traveling to the downward emitting portion is colored through the inner lens 30, but the light traveling in the direction of the cutout portion 30a is not colored and is irradiated to the outside from the downward emitting portion. Since a part of the light emitted in the direction intersecting the main direction is transmitted uncolored, the region where white light passes through the cutout portion 30a and the upper flat surface portion 23 functions as a non-colored transmission portion. Here, the main light emission direction of the light emitted from the light source unit 15 is made to coincide with the main direction perpendicular to any of the body unit 10, the substrate unit 11, and the light source unit 15, and the main light emission direction is set to the side emission unit 21. An example that is directed. However, a direction deviated from the vertical direction by a predetermined angle with respect to the main direction may be set as the main light emitting direction, and the main light emitting direction may be directed in a direction different from the side emitting unit 21.

  By providing the cutout portion 30a below the light source unit 15, the white light from the light source unit 15 is irradiated without being colored and is irradiated below the vehicle lamp 1, and the side direction emission unit 21 or the upper direction emission unit Is irradiated with colored light. The white light emitted downward can illuminate the position of the night road side band as a road shoulder lamp. In addition, the light source unit 15 is mounted on the substrate unit 11 of the body unit 10, and the area of the upward emitting part is larger than that of the lateral emitting part 21, so that the amount of light taken out from the upper flat part 23 is ensured. Can do. Thereby, it is possible to easily confirm the loading platform position from the self-driver while using both the side lamp and the road lamp. Although it is not obligatory to install a shoulder lamp on the vehicle, the driver can easily confirm the position of the night road side zone from the driver's seat, so the vehicle lamp 1 can be used conveniently as a side lamp and a shoulder lamp. improves.

  Next, exploded perspective views of the vehicular lamp 1 of the present embodiment are shown in FIGS. FIG. 4 is an exploded perspective view seen from diagonally above, and FIG. 5 is an exploded perspective view of the vehicular lamp seen from diagonally below. The body portion 10 is provided with a locking projection 11 a and an outer frame 11 b on the front side of the substrate portion 11. The inner lens 30 is an optical member that is disposed inside the outer lens 20 with a predetermined gap. The inner lens 30 is a side emitting part 31, an upper curved part 32, an upper flat part 33, a lower curved part 34, and a lower curved part 34. The side plane part 35 is integrally formed, and a cutout part 30 a is provided at a position below the light source part 15 in the lower plane part 35. In the drawing, an example is shown in which five light emitting diodes are used for the light source unit 15 as indicated by broken lines.

  The locking protrusions 11 a are locking claws provided in a plurality at positions corresponding to the rear side end of the inner lens 30. When the inner lens 30 is combined with the body portion 10, the inner lens 30 is positioned by the locking protrusion 11 a, and a locking claw is fitted into a groove or the like provided at the rear side end portion to engage the inner lens 30.

  The outer frame 11 b is a frame-like portion that stands up around the outer periphery of the substrate portion 11, and has substantially the same shape as the rear end portion of the outer lens 20. When the outer lens 20 is combined with the body portion 10, the rear side end of the outer lens 20 is fitted and positioned between the locking projection 11a and the outer frame 11b, and is fixed by, for example, welding in the positioned state. Here, as shown in FIGS. 3 to 5, a step is formed by changing the thickness at the rear side end portion of the outer lens 20, and the thin end portion is formed between the locking projection 11 a and the outer frame 11 b. The step formed in the gap and formed thickly contacts the front side of the outer frame 11b. Thereby, the clearance gap between the body part 10 and the outer side lens 20 is reduced, and fixation by welding becomes easy. When welding is used to fix the body portion 10 and the outer lens 20, the replacement of the vehicular lamp 1 is performed by removing the entire unit of the vehicular lamp 1 from the vehicle, instead of removing and replacing only the light source portion 15. Replace.

  Of the outer lens 20, a plurality of concave or convex steps are formed on the inner surfaces of the side emitting portion 21, the upper curved surface portion 22, and the lower curved surface portion 24, and the inner surfaces of the upper planar portion 23 and the lower planar portion 25. Is a smooth surface. The outer surface of the entire outer lens 20 is also a smooth surface.

  Of the inner lens 30, a plurality of concave or convex steps are formed on the inner surfaces of the upper curved surface portion 32 and the lower curved surface portion 34, and the inner surfaces of the side direction emitting portion 31, the upper planar portion 33, and the lower planar portion 35 are formed. Is a smooth surface. Further, a plurality of concave or convex steps are formed on the outer surfaces of the side direction emitting portion 31 and the upper plane portion 33, and the outer surfaces of the upper curved portion 32, the lower curved portion 34, and the lower plane portion 35 are smooth surfaces. Has been. Here, the steps provided on the outer surface of the upper flat surface portion 33 and the steps provided on the inner surfaces of the upper curved surface portion 32 and the lower curved surface portion 34 have different pitches. By forming steps with different pitches on each surface, light scattering and extraction suitable for each surface can be performed.

  In this way, by forming a plurality of concave or convex steps on each surface of the outer lens 20 and the inner lens 30 as necessary, the light emitted from the light source unit 15 is appropriately scattered and taken out to the outside. be able to. The positions and shapes for forming the steps are not limited to those shown in FIGS. 4 and 5 and can be formed in a desired region as necessary.

  Next, the inner lens 30 will be described in more detail with reference to FIGS. FIG. 6 is a perspective view of the state in which the inner lens 30 is attached to the body portion 10 as viewed obliquely from below. FIG. 7 is a view showing a state where the inner lens 30 is attached to the body portion 10, FIG. 7 (a) is a top view, FIG. 7 (b) is a front view, and FIG. 7 (c) is a bottom view. FIG. 7D is a side view. As shown in FIGS. 6 and 7, the inner lens 30 includes a side emitting part 31, an upper curved part 32, an upper flat part 33, a lower curved part 34, and a lower flat part 35 that are integrally formed. Has been.

  The side-direction emitting portion 31 is a surface that emits light in the side surface direction of the vehicle, and a band-like surface is continuously formed so as to form a rounded trapezoid with respect to the body portion 10 when viewed from the top surface or the bottom surface. Surface. Here, an example of a rounded trapezoid is shown, but any surface that emits light in the lateral direction of the vehicle may be used, and the shape is not limited and may be an elliptical shape or a polygonal shape.

  The upper curved surface portion 32 is a curved surface formed continuously from the upper edge of the side emitting portion 31 to the outer edge of the upper flat surface portion 33, and the edge portion is in contact with the body portion 10 on the back surface side. The curved surface of the upper curved surface portion 32 is a curved surface shape that protrudes outward, and has a tapered shape in which the inclination angle increases toward the side emitting portion 31.

  The upper flat surface portion 33 includes a flat surface portion inclined in the side surface direction from the back surface side, and is connected to the upper curved surface portion 32 by forming a ridge line. Moreover, the edge part is contacting the body part in the back side of the upper side plane part 33. FIG.

  The lower curved surface portion 34 is a curved surface formed continuously from the lower edge of the side emitting portion 31 to the outer edge of the lower flat surface portion 35, and the edge portion is in contact with the body portion 10 on the back side. . The curved surface of the lower curved surface portion 34 is a curved surface shape that protrudes outward, and has a tapered shape in which an inclination angle increases toward the side emitting portion 31.

  The lower flat surface portion 35 includes a flat surface portion inclined in the lateral direction from the back surface side, and is connected to the lower curved surface portion 34 by forming a ridge line. Further, on the back side of the lower flat surface portion 35, a notch portion 30 a is provided at a position below the light source portion 15.

  The upper curved surface portion 32 and the upper flat surface portion 33 form a polyhedral shape connected via a ridgeline, and function as an upward emitting portion that emits light upward from the vehicular lamp 1. Similarly, the lower curved surface portion 34 and the lower flat surface portion 35 also have a polyhedral shape connected via a ridgeline, and function as a downward emitting portion that emits light downward from the vehicular lamp 1. The upward emitting part and the downward emitting part are provided to face each other with the side emitting part 31 interposed therebetween, and constitute an upward emitting part.

  As shown in FIGS. 6 and 7, the side emitting part 31 is a band-like surface that forms a rounded trapezoid with respect to the body part 10, and has an area larger than that of the upper emitting part and the lower curved surface part 34. Is formed small.

  As described above, the vertical emission part of the inner lens 30 that is an optical member is formed in a polyhedral shape in which the curved surface part and the flat part are connected, and the area of the side emission part 31 is the upward emission part and the downward direction. It is smaller than the emission part. Thereby, the intensity | strength of the inner side lens 30 improves rather than comprising an optical member only by a plane. In addition, since the area of the vertical emitting part is larger than that of the side emitting part 31, the amount of light emitted upward and downward can be secured, and the loader position can be changed from the self-operator while using both the side lamp and the road shoulder lamp. It can be easily confirmed.

  In addition, the light emitted from the light source unit 15 is transmitted through the side direction emitting unit 31 and the light traveling in the main direction and the right and left direction is colored and irradiated to the outside. Further, light traveling in the upward direction is also transmitted through the upper curved surface portion 32 and the upper flat surface portion 33 to be colored and irradiated to the outside. A part of the light traveling downward passes through the lower curved surface portion 34 and the lower flat surface portion 35 and is colored and irradiated to the outside, but the light traveling in the direction of the cutout portion 30a is not colored and is externally white. Is irradiated. Since a part of the light emitted in the direction intersecting the main direction is transmitted uncolored, the cutout portion 30a functions as a non-colored transmission portion.

  By providing the cutout portion 30a below the light source unit 15, the white light from the light source unit 15 is irradiated without being colored and is irradiated below the vehicle lamp 1, and the side direction emission unit 21 or the upper direction emission unit Is irradiated with colored light. The driver can easily confirm the position of the night road side band from the driver's seat by the white light emitted downward. Thus, in this embodiment, even when only the inner lens 30 is used as an optical member, it is possible to obtain the same operational effects as when the outer lens 20 and the inner lens 30 are combined.

  FIG. 8 is a perspective view showing the outer appearance of the inner lens 30 obliquely from above. FIG. 9 is a rear view showing the inside of the inner lens 30. 10A and 10B are diagrams showing the structure of the inner lens 30. FIG. 10A is a cross-sectional view taken along line AA in FIG. 8, and FIG. 10B is a cross-sectional view taken along line BB in FIG. 11A and 11B are views showing an appearance and an internal structure of the inner lens 30. FIG. 11A is a perspective view obliquely from above, and FIG. 11B is a bottom view of the state divided by the line BB in FIG. It is a perspective view shown from the side, and FIG.11 (c) is a perspective view which shows the state divided | segmented by the BB line in FIG. 8 from the upper surface side.

  A plurality of concave or convex steps are formed on the outer surface of the side emitting part 31 in the vertical direction. Although the shape and pitch of the specific step are not limited, for example, if a fisheye step is used, the light distribution angle of the light irradiated in the vehicle side surface direction can be expanded, and the visibility of the loading platform part from other vehicles is improved. be able to.

  A plurality of concave or convex steps are also formed on the outer surface of the upper plane portion 33. Although the shape and pitch of a specific step are not limited, light can be scattered favorably by using a triangular step having a substantially triangular cross section, and it becomes difficult to visually recognize the internal structure of the vehicular lamp 1. As a result, not the light from the light source unit 15 but the light surface-emitted in the entire upper flat surface part 33 is directly visually recognized, so that the position of the cargo bed can be easily confirmed from the driver.

  On the inner surface 36 of the upper curved surface portion 32 and the inner surface 37 of the lower curved surface portion 34, a plurality of concave or convex steps extending in the same direction and having the same pitch are formed. Although the shape and pitch of a specific step are not limited, light can be scattered favorably by using a triangular step. In addition, as a step formed on the outer surface and the inner surface 36 and the inner surface 37 of the upper plane portion 33, when a step in the same direction extending in the main direction from the back side is formed, the inner lens 30 is removed from the mold when molding. It becomes easy.

As shown in FIG. 10B, when the angle at which the extension line of the upper plane portion 33 intersects with the main direction is θ _1, and the angle at which the extension line of the lower plane portion 35 intersects with the main direction is θ _2. , Θ ₁ > θ ₂ . As described above, the angle formed by the upper plane portion 33 and the main direction is larger than the angle formed by the lower plane portion 35 and the main direction. The lower curved surface portion 34 and the lower emission portion composed of the lower flat surface portion 35 are asymmetric in the vertical direction. Thereby, when attaching the inner lens 30 to the body part 10, it can prevent attaching in the up-down direction accidentally.

  Next, the outer lens 20 will be described in more detail with reference to FIGS. FIG. 12 is a rear view showing the inside of the outer lens 20. 13A and 13B are diagrams illustrating the structure of the outer lens 20, in which FIG. 13A is a cross-sectional view taken along line AA in FIG. 12, and FIG. 13B is a cross-sectional view taken along line BB in FIG. FIG. 14 is a perspective view showing a state in which the outer lens 20 is divided along the line BB in FIG.

  On the inner surface 26 of the upper curved surface portion 22 and the inner surface 27 of the lower curved surface portion 24, a plurality of concave or convex steps extending in the horizontal direction and having the same pitch are formed. Although the shape and pitch of a specific step are not limited, light can be scattered favorably by using a cylindrical step.

  A plurality of concave or convex steps are formed on the inner surface 28 of the side emitting portion 21. The shape and pitch of the specific steps are not limited, but by forming the triangular step by extending in the horizontal direction, the light extracted from the side direction emission part 21 can be made to stand out, and the loading platform part from another vehicle can be highlighted. Visibility can be improved.

As shown in FIG. 13B, when the angle at which the extension line of the upper plane portion 23 intersects with the main direction is θ _3, and the angle at which the extension line of the lower plane portion 25 intersects with the main direction is θ _4. , Θ ₃ > θ ₄ . As described above, the angle formed by the upper plane portion 23 and the main direction is larger than the angle formed by the lower plane portion 25 and the main direction. In addition, the lower curved surface portion 24 and the lower emission portion composed of the lower flat surface portion 25 are vertically asymmetrical. Thereby, when attaching the outer side lens 20 to the body part 10, it can prevent attaching up and down direction accidentally.

As described above, in the present embodiment, the vertical emitting portions of the outer lens 20 and the inner lens 30 that are optical members are configured in a polyhedral shape in which a curved surface portion and a flat portion are connected, and the area of the side emitting portions is vertical. Since it is smaller than the direction emitting part, the strength of the vehicular lamp is improved. In addition, since the area of the vertical emission part is larger than that of the side emission part, it is possible to easily confirm the loading platform position from the self-driver while using both the side lamp and the roadside lamp.
(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings. The description of the same configuration as that of the first embodiment is omitted. FIG. 15 is a schematic diagram illustrating another configuration example of the light source unit 15 of the second embodiment.

  The light source unit 15 of the second embodiment uses a combination of the light emitting element 16 and the light guide plate 17. The light emitting element 16 uses a so-called side view type LED package in which an LED chip is mounted on a substrate or the like (not shown) as a light source, and irradiates white light horizontally with the mounting surface. The light guide plate 17 is a substantially flat plate member made of a material such as a resin that transmits light, and is mounted on a substrate (not shown). The light guide plate 17 includes an incident surface 17a, a lower emission surface 17b, a light scattering portion 17c, and a light emission surface 17d.

  The incident surface 17a is a side surface on which light from the light emitting element 16 is incident, and an antireflection process is applied to the surface as necessary. The lower emission surface 17 b is a side surface that faces the incident surface 17 a and is a surface that is disposed downward of the vehicular lamp 1. The light scattering portion 17c is a concavo-convex structure provided on the back side of the light guide plate 17, and scatters and reflects a part of the light traveling inside the light guide plate 17 forward. The light emission surface 17 d is a main light extraction surface of the light guide plate 17, and is a surface that emits light in the side surface direction of the vehicular lamp 1.

  The light emitting element 16 is mounted on the substrate so as to face the incident surface 17a of the light guide plate 17, and the emitted light enters the light guide plate 17 from the incident surface 17a. A part of the light traveling inside the light guide plate 17 is reflected forward by the light scattering portion 17c, exits from the light exit surface 17d, and passes through the side exit portions 21, 31, the upper exit portion, and the lower exit portion. Colored and irradiated as colored light to the outside of the vehicular lamp 1. Of the light traveling inside the light guide plate 17, the light that has not been reflected by the light scattering portion 17 c is emitted from the lower emission surface 17 b to the outside of the vehicle lamp 1 from the cutout portion 30 a that is a non-colored transmission portion. Is irradiated as white light.

By using the light emitting element 16 and the light guide plate 17 in combination as the light source unit 15, the thickness of the light guide plate 17 and the light scattering part 17c are appropriately designed, and the white light extracted downward from the lower emission surface 17b and the light emission surface The light extracted from 17d and colored can have a desired light distribution. Moreover, since a light distribution including light traveling toward the upper flat portions 23 and 33 can be realized, it is possible to easily confirm the loading platform position from the self-driver while using both the side lamp and the road shoulder lamp.
(Third embodiment)
Hereinafter, a third embodiment of the present invention will be described in detail with reference to the drawings. The description of the same configuration as that of the first embodiment is omitted. In the first embodiment, by providing the cutout portion 30a in the lower plane portion 35 at a position below the light source unit 15, a part of the light emitted in the direction intersecting the main direction is transmitted uncolored. As described in the first embodiment, the inner lens 30 functions as an optical member even when combined with the outer lens 20, but the inner lens 30 alone functions as the optical member of the present invention. When only the inner lens 30 is used as an optical member, if the cutout portion 30a is formed in the lower flat surface portion 35, the internal light source portion 15 and the circuit board 14 are exposed.

  Therefore, in the present embodiment, the inner lens 30 is molded in two colors, a colored region and a non-colored region, and the interior of the vehicular lamp 1 is sealed and protected while irradiating white light below the light source unit 15. . FIG. 16 is a view showing an appearance and an internal structure of the inner lens 30 used in the vehicular lamp 1 of the third embodiment, and FIG. 16A is a perspective view obliquely from above, and FIG. FIG. 16 is a perspective view showing a state of being divided at the center from the bottom surface side, and FIG. 16C is a perspective view showing a state of being divided at the center from the top surface side.

  Also in the present embodiment, the inner lens 30 includes a side emitting portion 31, an upper curved surface portion 32, an upper flat surface portion 33, a lower curved surface portion 34, and a lower flat surface portion 35 that are integrally formed. Unlike the first embodiment, the lower flat surface portion 35 of the present embodiment is provided with a non-colored transmission portion 39 below the light source portion 15.

  The non-colored transmission part 39 is formed of a material that does not color the white light from the light source part 15 and transmits the white light as it is, and is in two colors with the colored resin that forms the other part of the inner lens 30. Molded. Other structures are the same as those in the first embodiment.

  In the present embodiment, the white light emitted from the light source unit 15 is colored and irradiated to the outside when passing through a colored resin other than the non-colored transmission unit 39. Further, the white light irradiated downward from the light source unit 15 is transmitted through the non-colored transmission unit 39 and is irradiated to the outside as white light.

  By providing the non-colored transmission part 39 below the light source part 15, the light source part 15 and the circuit board 14 accommodated in the inner lens 30 are protected without being exposed to the outside. Therefore, the inner lens 30 can be used as the vehicular lamp 1 in a state where the inner lens 30 is combined with the body portion 10. At this time, the inner lens 30 and the body portion 10 may be fixed by engagement with the locking projection 11a. However, if the end portion of the inner lens 30 is sandwiched between the locking projection 11a and the outer frame 11b, the sealing performance is improved. Therefore, it is preferable.

Even in this embodiment, the vertical emitting part of the inner lens 30 that is an optical member is configured in a polyhedral shape in which a curved surface part and a flat part are connected, and the area of the side emitting part is smaller than the vertical emitting part. The strength of the vehicular lamp is improved. In addition, since the area of the vertical emission part is larger than that of the side emission part, it is possible to easily confirm the loading platform position from the self-driver while using both the side lamp and the roadside lamp.
(Fourth embodiment)
In the fourth embodiment of the present invention, the vehicular lamp 1 shown in the first to third embodiments is attached to the rear surface of a loading platform such as a truck and used as a vehicle lamp. When the vehicular lamp 1 is attached to the upper rear surface of the loading platform, the visibility of the loading platform from the following vehicle can be enhanced by the colored light from the side emitting portion 21. Moreover, since the rear surface of the cargo bed can be illuminated with white light emitted downward from the non-colored transparent portion of the lower plane portion 25, it can also function as a signboard illumination that illuminates characters and designs drawn on the cargo bed. it can.

DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 10 ... Body part 11 ... Board | substrate part 11a ... Locking protrusion 11b ... Outer frame 12 ... Fixing part 13 ... Light source holding part 14 ... Circuit board 15 ... Light source part 16 ... Light emitting element 17 ... Light guide plate 17a ... Incident Surface 17b ... Lower exit surface 17c ... Light scattering portion 17d ... Light exit surface 20 ... Outer lens 30 ... Inner lens 21, 31 ... Side direction exit portions 22, 32 ... Upper curved surface portions 23, 33 ... Upper plane portions 24, 34 ... Lower curved surface portions 25, 35 ... lower flat surface portions 23a, 25a ... tapered portions 26, 27, 28, 36, 37 ... inner surface 30a ... notched portion 39 ... non-colored transparent portion

Claims (4)

A vehicle lamp comprising a body part, a light source part mounted on the body part, and an optical member provided so as to cover the light source part,
The optical member includes a side emitting part and a vertical emitting part,
The area of the side emission part is smaller than the vertical emission part,
The vertical exit section, Ri polyhedral der that the curved surface portion and the flat portion are connected through a ridge,
A plurality of concave or convex first steps are formed on the curved surface portion,
A vehicular lamp characterized in that a plurality of concave or convex second steps having a pitch different from that of the first step are formed on the planar portion . The vehicular lamp according to claim 1 ,
The vehicular lamp, wherein the first step and the second step are formed to extend in the same direction. The vehicular lamp according to claim 1,
The vertical emission part has a first part and a second part facing each other across the side emission part,
The main direction is a direction perpendicular to the surface on which the light source part of the body part is mounted,
The vehicular lamp according to claim 1, wherein an angle formed by the flat portion of the first portion and the main direction is larger than an angle formed by the flat portion of the second portion and the main direction. The vehicular lamp according to claim 3 ,
The optical member includes a colored portion that colors and transmits light from the light source portion at least in part,
The vehicular lamp, wherein the flat portion of the second portion is provided with a non-colored transmission portion that transmits a part of the light emitted in a direction crossing the main direction without being colored.

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