JP2010009981A - Marker lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structurally simple and inexpensive marker lap having a reflector structure capable of efficiently reflecting the light of an LED to the whole cover. <P>SOLUTION: This marker lamp 1 is provided with a columnar reflector 10 for reflecting the light from the LED 5, and a printed circuit board 6 of arranging the LED 5 along the outer periphery of its reflector 10. Since the reflector 10 can reflect the light of the LED 5 over a wide range up to an upper part from below the cover 2 by arranging a shade part 13 expanding outward in a curved shape and a circular shape according to extending upward and arranging a projection surface 11 projecting in a circular arc shape in a head part of the shade part 13, the marker lamp 1 can efficiently reflect the light from the LED 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a marker lamp used as a mark or decoration used for a vehicle width, a side surface, or a headlight in a large vehicle such as a truck.

Conventionally, issuance diodes (LEDs) have been adopted for marker lamps, vehicle width lights, headlamps, and the like for reasons such as low power consumption and no fear of running out of a ball. In particular, when the driver makes a right or left turn, it is used as a mark for the side position of the car to prevent entrainment and to make it easier to see the position of the road shoulder and the vehicle body. Therefore, various reflection mechanisms have been proposed inside and outside in order to emit light uniformly from the side of the marker lamp as well as the entire marker lamp through the side mirror from the driver.
Among them, there are many marker lamps that are formed of a cylindrical metal or plastic inside a marker lamp, and have a reflecting mechanism called a reflector whose entire surface is mirror-like (for example, Patent Document 1, Patent Document 2 and Patent Document 3).

JP 2006-302758 A (paragraph 0042, FIG. 1) Japanese Patent Laid-Open No. 9-330604 (FIG. 1) Japanese Patent Laid-Open No. 10-31905 (FIG. 1)

FIG. 10 shows a conventional general marker lamp 100. FIG. 10A is a diagram showing the inside when the reflector 104 of the conventional marker lamp 100 reflects light from the side, and FIG. 10B shows the light reflected by the reflector 104 of the conventional marker lamp 100. It is the figure which expressed the inside when reflecting from above. The hatching in FIG. 10A indicates a portion where the light reflected by the reflector 104 is reflected on the cover 103.
The marker lamp 100 is provided with a transparent cover 103 having a dome-like yellow or orange color. The cover 103 is exposed to light, and the entire cover 103 appears to emit light. As described above, the conical reflector 104, which is mirror-finished on plastic or metal, is provided at the center, and the reflector 104 is configured to reflect the side.

However, in this structure, in order to irradiate the light to the side, the light of the four LEDs 102 is reflected on the outer surface of the reflector 104 to shine the side surface of the cover 103. Therefore, as shown in FIG. The light reflected on the cover 103 can only be reflected by the cover 103 at only a few points, and it is difficult to reflect the light from the bottom to the top of the cover 103 as a whole.
Further, in consideration of illuminating the ceiling of the cover 103, the reflector 104 becomes a hindrance, and the inside of the reflector 104 is formed in a hollow cylindrical shape, and it is necessary to dispose the LED 102 in the center to illuminate the ceiling of the cover 103. . Therefore, considering the heat and cost generated in the marker lamp 100, it has not been possible to meet the demand for reducing the number of LEDs 102 as much as possible.

  Therefore, an object of the present invention is to provide a marker lamp having a reflector structure that can efficiently reflect the light of the LED to the entire cover.

The marker lamp according to claim 1 (marker lamp 1) is detachably mounted with a dome-shaped cover (cover 2) that transmits light from a plurality of LEDs (LED 5) serving as a light source, and the cover (cover 2). A marker lamp (marker lamp 1), and the lamp body (lamp body 3) is disposed at the center of the lamp body (lamp body 3), and A cylindrical reflector (reflector 10) that reflects light from the LED (LED5), and a printed circuit board (printed circuit board 6) in which the LED (LED5) is arranged along the outer periphery of the reflector (reflector 10) are provided. The reflector (reflector 10) is an umbrella part (umbrella part) that is curved and extends outward in a circular shape as it extends upward. 3) that the provided characterized.
With the above configuration, the marker lamp can reflect the light of the LED over a wide range from the bottom to the top of the cover, so that the light from the LED can be reflected efficiently.

The marker lamp (marker lamp 1) according to claim 2, wherein at least a part of the light source part (light source part 30) of the LED (LED 5) is at the tip (tip 20) of the umbrella part (umbrella part 13) in a plane. It is arranged at a position that is not hidden.
With the above configuration, the marker lamp can directly deliver the light from the light source unit to the vicinity of the ceiling of the cover, so that the light from the LED can be used efficiently.

The marker lamp (marker lamp 1) according to claim 3, wherein the width of the cover (cover 2) in the same horizontal direction as the tip (tip 20) is the same as the width of the umbrella (13). The space is provided between the inner surface (inner surface 8) of the cover (cover 2) and the tip (tip 20).
With the above configuration, the marker lamp can directly deliver the light from the light source unit to the vicinity of the ceiling of the cover, so that the light from the LED can be used efficiently.

The marker lamp (marker lamp 1) according to claim 4, wherein the head portion of the umbrella portion (umbrella portion 13) has a planar reflecting surface (projecting surface 11, head) that reflects incident light toward the ceiling 50. A partial reflection surface 41) is provided.
With the above configuration, the marker lamp re-reflects on the reflecting surface and reaches the cover, so that the light can be reflected without any excess, so that the entire cover can be efficiently illuminated.

The marker lamp (marker lamp 1) according to claim 5, wherein the reflecting surface protrudes toward the center of the ceiling 50 (ceiling 50) of the cover (cover 2) (for example, an arc shape, a conical shape, a triangular shape). With the above configuration, the marker lamp collects the light that is irregularly reflected on the inner surface of the cover and allows the light to reach the ceiling of the cover. Can do. Therefore, the marker lamp can reflect the light without any excess, so that the entire cover can be efficiently illuminated.

The marker lamp (marker lamp 1) according to claim 6 is characterized in that the projecting surface (projecting surface 11) is formed in an arc shape.
With the above configuration, the marker lamp can be reflected evenly without affecting the viewing angle, such as a square or a triangle, by forming the protruding surface in an arc shape. The light can reach the ceiling of the cover. Therefore, the marker lamp can reflect the light without any excess, so that the entire cover can be efficiently illuminated.

The marker lamp (marker lamp 1) according to claim 7, wherein the height from the lower end of the umbrella part (umbrella part 13) to the tip (tip 20) is provided at a half height position of the entire cover. A space is provided between the inner surface (inner surface 8) of the ceiling (ceiling 50) of the cover (cover 2) and the projecting surface (projecting surface 11).
With the above configuration, since the marker lamp has a space between the inner surface of the ceiling of the cover and the protruding surface, it becomes easier to take in the light that is irregularly reflected on the inner surface of the cover, and uses the light more efficiently. can do.

  The marker lamp of the present embodiment can efficiently reflect the LED light to the entire cover by the reflector.

  The best mode for carrying out the present invention will be described below with reference to FIGS. FIG. 1 is a schematic view showing a state in which the marker lamp according to the present embodiment is mounted on the side surface of the track. FIG. 2 is a perspective view showing the internal structure of the marker lamp according to the present embodiment. FIG. 3 is a plan view showing the internal structure of the marker lamp in the present embodiment, FIG. 4 is a cross-sectional view showing the internal structure of the marker lamp in the present embodiment, and FIG. FIG. 6 is a schematic diagram showing the internal structure of the marker lamp in the embodiment from the side, and FIG. 6 is a schematic diagram showing the internal structure of the marker lamp of another example in the present embodiment from the side.

As shown in FIG. 1, the marker lamp 1 is mounted on the side surface of the vehicle body of the truck T and includes a cover 2, a lamp body 3, and a packing 7.
The cover 2 is formed in a dome shape with a transparent resin or glass of yellow or orange, and a lens is formed on the inner surface 8 of the cover 2 so as to diffuse the light of the LED 5 described later or the light reflected from the reflector 10. A cut has been made.
A lower portion of the cover 2 is provided with a groove (not shown) so as to be fitted to the fixed base 4 of the lamp body 3 so that the cover 2 can be rotated and fixed to the fixed base 4. Further, the fitting portion between the cover 2 and the fixed base 4 is provided with a waterproof packing 7 formed of a material such as rubber on the outer periphery.

As shown in FIGS. 2 to 5, the lamp body 3 includes a fixed base 4, a printed board 6, and a reflector 10. The lamp body 3 is provided in a circular shape, and is provided with a hole (not shown) for connecting an electric wiring from the vehicle body side and a bolt hole 17 serving as a hole for fixing to the vehicle body side with a bolt.
The printed circuit board 6 is provided in a circular shape, and the three LEDs 5 are provided around the reflector 10 by rotating 120 degrees equally about the center. As shown in FIG. 3, the light source unit 30 that emits the light source of the LED 5 when viewed from above is disposed on the printed circuit board 6 at a position where a part of the light source unit 30 is exposed without being covered by the umbrella unit 13.
Further, as shown in FIG. 2 or FIG. 4, the printed circuit board 6 is supported by four board support members 9 erected from the lamp body 9, and extends from the fixed base 4 in a columnar shape at the center of the fixed base 4. It is clamped between the clamping piece 18 and the reflector 10.

As shown in FIG. 4 or FIG. 5, the reflector 10 is provided with a columnar column, and is provided with an umbrella portion 13 formed in a so-called trumpet shape that curves in the upward direction and spreads outward in a circular shape. Yes. Further, the head portion of the umbrella portion 13 is provided with a projecting surface 11 projecting in an arc shape toward the center of the cover 2. The reflector 10 is made of resin, and a mirror surface coating (plating) is applied to the entire reflector 10 so that light can be reflected on the reflector 10. Further, the reflector 10 is fixed by a fixing screw 16 penetrating the holding piece 18.
The width C of the umbrella portion 13 of the reflector 10 is about １ ／ of the dimension between A and B of the cover 2, and there is a space between the inner surface 8 of the cover 2 and the reflector 10. ing. Further, the position (AB) of the tip 20 of the umbrella portion 13 in the height direction is located at about half of the dimension D from the ceiling 50 of the cover 2 to the lower end of the cover 2, and the ceiling 50 of the cover 2. To the reflector 10 is also provided with a space.
(Other examples)

FIG. 6 is a schematic diagram showing the internal structure of the marker lamp of another example of the present embodiment from the side. Parts having the same structure as those in the embodiment described above are denoted by the same reference numerals. The difference from the above embodiment is that there is no protruding surface 11 and the head of the umbrella portion 13 of the reflector 10 is provided with a flat circular head reflecting surface 41 painted on a mirror surface.
(Display operation and effect of marker lamp in this embodiment)

  The display operation of the marker lamp 1 in this embodiment will be described below with reference to FIGS. FIG. 7 is a schematic diagram showing a state when the reflector of the marker lamp reflects light, and FIG. 8 is a schematic diagram enlarging a part of the state when the reflector of the marker lamp reflects light. 9 is an outline view in which the vicinity of the umbrella portion is enlarged when the reflector of the marker lamp reflects light.

  As shown in FIG. 7 or FIG. 8, when light is irradiated from the light source unit 30 of the LED 5 toward the reflector 10, the reflector 10 reflects the light by a mirror surface that is coated entirely. For example, when the point a of the reflector 10 is irradiated, the light is reflected at an acute angle on the mirror surface of the reflector 10 and reflected as a light beam a, and the light travels through the cover 2. Further, when the point b of the reflector 10 is irradiated, the light is reflected to the mirror surface of the reflector 10 at an obtuse angle (angle b) and reflected as a light beam b, and the light travels through the cover 2. Further, when the point c near the tip 20 of the umbrella portion 13 of the reflector 10 is irradiated, the light is reflected at an acute angle (angle c) on the mirror surface of the reflector 10 and reflected as a light beam c, and is transmitted through the cover 2 to transmit light. Advances. Thus, the reflector 10 can reflect light over a wide range. In particular, the tip 20 (near the point c) of the umbrella portion 13 is reflected at an acute angle, and the light is also delivered to a location not directly reached by the light source portion 30 of the LED 5 (light ray c).

In addition, the light source unit 30 that emits the light source of the LED 5 is not covered by the umbrella unit 13 in the plane viewed from above, and the LED 5 is disposed at a position where a part of the light source unit 30 appears to be exposed. Directly reaches the vicinity of the ceiling 50 of the cover 2 as a light beam d.
Furthermore, the light irregularly reflected on the reflector 10 and the inner surface 8 of the cover 2 is reflected near the ceiling 50 of the cover 2 by the mirror-coated projecting surface 11 of the umbrella portion 13 while being irregularly reflected like a light ray e. Moreover, when the shape of the inner surface of the cover 2 is reversed to the mortar, the cover 2 is irregularly reflected toward the center where the reflector 10 of the lamp body 3 is provided.

FIG. 9 is a diagram showing a state in which the light irregularly reflected on the inner surface 8 of the cover 2 is reflected in more detail (the dotted line indicates the reflection of the protruding surface 11 and the solid line indicates the reflection of the head reflecting surface 41). .)
When the light irregularly reflected on the inner surface 8 of the cover 2 is re-reflected by the mirror surface of the head reflecting surface 41, it enters at the incident angle β, reflects at the reflection angle β, and reaches the cover 2 on the opposite side. As described above, the reflector 10 reflects the light without using the reflector 10 as a whole.
Further, when re-reflected by the mirror surface of the projecting surface 11, it enters at the incident angle α and is reflected by the reflection angle α and reaches the cover 2, but the projecting surface 11 projecting in an arc shape is incident at the same angle. However, it can be seen that light is condensed toward the center of the ceiling 50 of the cover 2 as compared with the head reflecting surface 41 (α · γ). Therefore, even if the light source part 30 is a place where light does not reach directly, the light can reach the ceiling 50 of the cover 2 by the action of the projecting surface 11 condensing. Then, the entire reflector 10 is used to reflect light without being left behind.

The effect grasped from the present embodiment will be described in detail below.
(1) The marker lamp 1 according to the present embodiment is arranged at the center of the lamp body 3 and is provided with a columnar reflector 10 that reflects light from the LED 5, thereby providing a cavity in the reflector 10. Therefore, the number of LEDs 5 can be reduced, and the structure is simple and can be manufactured at low cost.

(2) The marker lamp 1 of the present embodiment has a wide range from the lower side to the upper side of the cover 2 because the reflector 10 is provided with an umbrella portion 13 that is curved as it extends upward and expands outward in a circular shape. Since the light of LED5 can be reflected over, it can reflect efficiently.

(3) In the marker lamp 1 of the present embodiment, the light source 30 of the LED 5 is arranged at a position where the light source 30 of the LED 5 is not hidden by the tip 20 of the umbrella 13 on the plane, so that the light 50 of the light source 30 is directly applied to the ceiling 50 of the cover 2. Light can be delivered to the vicinity.

(4) The marker lamp 1 according to the present embodiment is provided such that the width of the umbrella 13 is about one third of the width of the cover 2 in the same horizontal direction as the tip 20 of the umbrella 13. Since the space is provided between the inner surface 8 of the cover 2 and the tip 20, the light from the light source unit 30 can be delivered directly to the vicinity of the ceiling 50 of the cover 2.

(5) The marker lamp 1 of the present embodiment is provided with a planar reflecting surface (projecting surface 11, head reflecting surface 41) that reflects incident light toward the ceiling 50 on the head of the umbrella portion 13. Therefore, the irregularly reflected light re-reflects on the reflecting surface (the projecting surface 11 and the head reflecting surface 41) and reaches the cover 2, so that the marker lamp 1 can reflect the light without any excess. Therefore, the marker lamp 1 can shine the entire cover 2 efficiently.

(6) Since the marker lamp 1 of the present embodiment is provided with the protruding surface 11 protruding toward the center of the cover 2 at the head of the umbrella portion 13, it collects the light irregularly reflected on the inner surface 8 of the cover 2. Thus, the light can be reflected toward the center of the ceiling 50 of the cover 2. In this way, the reflector 10 can reflect light without any excess, so that the entire cover 2 can be efficiently illuminated.

(7) The marker lamp 1 according to the present embodiment is provided such that the height to the tip 20 of the umbrella portion 13 is a half of the entire lamp cover 2, and the inner surface 8 and the protruding surface 11 of the cover 2 Since the space is provided between them, the protruding surface 11 can easily take in the light irregularly reflected by the inner surface 8 of the cover 2, and the marker lamp 1 can use the light more efficiently.

(8) In the marker lamp 1 of the present embodiment, the reflector 10 is sandwiched between the sandwiching piece 18 extending in a columnar shape from the fixed base 4 and the reflector 10 and also serves as a fixing means for fixing the printed circuit board 6. The printed circuit board 6 and the reflector 10 can be fixed at once with a simple and inexpensive structure. Further, the printed circuit board 6 is stably fixed in the vertical direction by the sandwiching pieces 18.

(9) Since the marker lamp 1 of the present embodiment is irregularly reflected toward the center of the reflector 10 when the inner surface of the cover 2 is shaped like a mortar, the reflecting surface (protruding surface 11, head) The reflecting surface 41) collects the light irregularly reflected on the inner surface 8 of the cover 2 and allows the light to reach the ceiling 50 portion of the cover 2. In this way, the reflector 10 can reflect the light without any excess, so that the entire cover 2 can be efficiently illuminated.

(10) Since the marker lamp 1 of the present embodiment has the projecting surface 11 formed in an arc shape, the light irregularly reflected on the inner surface 8 of the cover 2 is evenly collected, and the light reaches the center of the cover 2. be able to. In addition, the appearance of light does not differ depending on the viewing angle such as a triangular shape or a square shape. In this way, the reflector 10 can reflect light without any excess, so that the entire cover 2 can be efficiently illuminated.
(Examples of changes to other embodiments)

The example which changed embodiment described above into other embodiment is shown below.
The LED 5 has been described as being provided on the same substrate, but it may be a structure provided separately as a separate substrate.
-Although LED5 used the chip-type thing, it may be a bullet-shaped LED.
The cover 2 includes a cone, a triangular pyramid, and a box shape.
-The fixing base 4 and the cover 2 are fixedly attached by a screwing structure, but the fitting structure may be fixed by screws.
Although the projecting surface 11 has been described as an arc shape, the projecting surface 11 has a structure capable of collecting light toward the center of the ceiling 50 of the cover 2, for example, a conical shape, a triangular pyramid shape, a quadrangular pyramid shape, or a polygonal pyramid shape. May be.

The schematic diagram showing the state where the marker lamp in this embodiment is attached to the side of a track. The perspective view showing the internal structure of the marker lamp in this Embodiment. The top view showing the internal structure of the marker lamp in this Embodiment. Sectional drawing which showed the internal structure of the marker lamp in this Embodiment. The schematic diagram which expressed the internal structure of the marker lamp in this Embodiment from the side. The schematic diagram which expressed from the side the internal structure of the marker lamp | ramp of the other Example in this Embodiment. The schematic diagram which showed the state when the reflector of the marker lamp in this Embodiment reflects light. The schematic diagram which expanded a part of state when the reflector of the marker lamp in this Embodiment reflects light. The schematic diagram which expanded the umbrella part vicinity of a state when the reflector of the marker lamp in this Embodiment reflects light. (A) The figure which showed the inside when the reflector in the conventional marker lamp reflects light from the side, (B) The figure which showed the reflector in the conventional marker lamp from upper direction.

Explanation of symbols

1,100 ... marker lamp, 2,103 ... cover, 3 ... lamp body,
4 ... fixed base, 5,102 ... LED, 6 ... printed circuit board,
7 ... packing, 8 ... inner surface, 9 ... substrate support member,
DESCRIPTION OF SYMBOLS 10,104 ... Reflector, 11 ... Projection surface as a reflective surface, 12 ... Prop, 13 ... Umbrella part, 16 ... Fixing screw, 17 ... Bolt hole, 18 ... Clamping piece,
19: fixing hole,
20 ... tip, 30 ... light source, 41 ... head reflecting surface as reflecting surface,
50 ... ceiling, T ... truck.

Claims (7)

A marker lamp comprising a dome-shaped cover that transmits light from a plurality of LEDs serving as a light source, and a lamp body on which the cover is detachably attached,
The lamp body is disposed at the center of the lamp body, and includes a columnar reflector that reflects light from the LED, and a printed board on which the LED is disposed along the outer periphery of the reflector,
2. The marker lamp according to claim 1, wherein the reflector is provided with an umbrella portion that is curved and extends outward in a circular shape as it extends upward. 2. The marker lamp according to claim 1, wherein at least a part of the light source part of the LED is arranged at a position that is not hidden by a tip of the umbrella part on a plane. The size of the umbrella portion in the width direction is set to one third of the width of the cover in the same horizontal direction as the tip, and a space is provided between the inner surface of the cover and the tip. The marker lamp according to claim 2. The marker lamp according to any one of claims 1 to 3, wherein a planar reflection surface that reflects incident light toward a ceiling is provided on a head of the umbrella portion. The marker lamp according to claim 4, wherein the reflecting surface is provided with a protruding surface protruding toward the center of the ceiling of the cover. The marker lamp according to claim 5, wherein the protruding surface is formed in an arc shape. The height from the lower end of the umbrella part to the tip is provided at a half height position of the entire cover, and a space is provided between the inner surface of the ceiling of the cover and the reflecting surface. The marker lamp according to any one of claims 4 to 6.

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