JP2002197902A - Light emitting structure for warning light and warning light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems in a warning light used in a site of construction or the like that many LEDs are required in order to enhance visibility by lighting over a wide area, and make the size thin. SOLUTION: This light emitting structure 12 for the warning light is equipped with a long reflecting surface 11 and an LED 14 arranged at one end of the reflecting surface to face it. The reflecting surface 11 has a first reflecting region 21 on one end side reflecting light from the LED 14 in the length direction of the reflecting surface and a second reflecting region 22 reflecting the light in front. The reflecting surface 11 is formed in a facing stairs with a plurality of reflecting parts corresponding to both reflecting regions. In spite of using a small number of LEDs 14, the light is emitted over a wide area almost to the whole of the reflecting surface, visibility is enhanced, and the size is made thin. In addition, a plurality of light emitting structures 2 are radially arranged in a disk-like body of the alarm light 1, the LED 14 is installed near the center of the body 4, and all the LEDs are mounted on a small circuit board 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warning light which is installed at a construction site or the like and emits a warning signal such as blinking light, and a light emitting structure for the warning light.

[0002]

2. Description of the Related Art Conventionally, a warning light has a light emitting structure provided on a disk-shaped main body supported by legs. The light emitting structure includes an LED that emits light forward and a lens disposed in front of the LED. The light from the LED goes straight on and is emitted forward from the lens. Normally, the main body of the warning light is configured to be thin, and accordingly, the distance between the lens and the LED is narrowed, so that the area of the lens from which light is emitted is also reduced. As a result, a large number of LEDs are required to emit light from almost the entire front surface of the warning light body. As a result, warning lights were expensive.

Accordingly, an object of the present invention is to solve the above-mentioned technical problems and to provide a thin warning light emitting structure for a warning light which can reduce the number of LEDs and emit light from a large area, and a warning light using the same. It is to be.

[0004]

The warning light emitting structure according to the first aspect of the present invention includes a long reflecting surface, and an LED disposed to face one end of the reflecting surface. The reflection surface includes a first reflection region disposed at one end of the reflection surface, and a second reflection region disposed at a distance from the first reflection region in a longitudinal direction of the reflection surface. , LED
Is emitted from the first reflection area and the second reflection area sequentially and emitted in front of the reflection surface.

According to the present invention, the visibility can be improved by effectively utilizing the entire length of the long reflecting surface while arranging a small number of LEDs opposite to one end of the long reflecting surface.
This can be realized as a thin light emitting structure in the front-back direction. The light emitting structure for a warning light according to claim 2 is the light emitting structure for a warning light according to claim 1, wherein the first and second reflection regions each include a plurality of reflecting portions, and Each reflecting portion of the area transmits light emitted from the LED to the second
A warning light emitting structure for reflecting light toward a corresponding reflection part of the reflection area of the warning light. According to the present invention, a plurality of high-luminance portions can be obtained in each reflection portion of the second reflection region by light from one LED, and higher visibility can be realized.

According to a third aspect of the present invention, in the light emitting structure for a warning light according to the second aspect, the plurality of reflecting portions of the first and second reflection areas are opposite to each other. The warning light emitting structure is provided in the form of a step. According to the present invention, the function and effect according to claim 2 can be substantially achieved. Claim 4
The warning light emitting structure according to any one of claims 1 to 3, further comprising an auxiliary reflecting surface erected along at least one side edge of the reflecting surface in the warning light emitting structure according to any one of claims 1 to 3. A part of the light emitted from the LED is guided to the second reflection area via the auxiliary reflection surface to form a high-luminance part, thereby providing a light emission structure for a warning light. According to the present invention, the number of high-luminance portions in the second reflection region can be increased by reflecting the light escaping to the side of the reflection surface by the auxiliary reflection surface for effective use.

A warning light emitting structure according to a fifth aspect of the present invention is the warning light emitting structure according to any one of the first to fourth aspects, further comprising a glove that covers the front of the long reflecting surface. The glove includes a lens forming region for diffusing reflected light from the second reflecting region obliquely forward, and a lens non-forming region for causing reflected light from the second reflecting region to go straight forward. And a light emitting structure for a warning light, wherein a non-lens forming area is arranged in front of at least one high-luminance section on the second reflecting area.

According to the present invention, while the visibility from the oblique front is enhanced by the diffused light passing through the lens forming area, the strong light from the high brightness portion is made to travel straight through the non-lens forming area to provide high visibility from the front. Can be secured. The light emitting structure for a warning light according to claim 6 is the light emitting structure for a warning light according to any one of claims 1 to 5, further comprising a glove that covers the front of the long reflecting surface. The light emitting surface includes a light emitting structure for a warning light, wherein the light emitting surface includes an inclined surface inclined toward a side. With the above-described inclined surface, light can be emitted to the side, so that visibility from the side can be increased.

The warning light according to claim 7 is provided on a disk-shaped main body supported by legs and directed forward.
A warning light is provided, wherein a plurality of light emitting structures according to any one of the above are provided radially, and one end of the reflecting surface of each light emitting structure on the LED side is arranged near the center of the disk-shaped main body. .
According to the present invention, the LEDs of the all light emission structure can be concentrated and disposed near the center of the main body, so that these LEDs can also be mounted on a single small board disposed at the center of the disk. Becomes

Therefore, LE for emitting light from a large area
Combined with the effect of the present light emitting structure that can reduce D, an inexpensive and highly visible warning light can be realized.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a warning light and a warning light emitting structure according to an embodiment of the present invention will be described in detail. FIG.
It is a front view of the above-mentioned warning light. The warning light 1 has a disk-shaped main body 4 supported by the legs 3 and directed forward, and a plurality of, for example, six main light emitting structures 2 provided on the main body 4. The plurality of light emitting structures 2 have the same configuration. Each light emitting structure 2 has a long reflective surface 11 and an LED 14 arranged opposite one end 12 of the reflective surface 11. A plurality of light emitting structures 2 are radially arranged with the longitudinal direction of the reflection surface 11 of each light emitting structure 2 along the radial direction of the main body 4. One end 12 of the reflecting surface 11 of each light emitting structure 2 is arranged near the center of the disk-shaped main body 4.

A cover 5 is attached to the center of the front surface of the main body 4. The cover 5 and the main body 4 cooperate to form a housing chamber 7 for housing the circuit board 6 for the LED 14 and the like.
(See FIG. 2). A plurality of, for example, six openings 8 are formed in the main body 4. These openings 8 are arranged at equal intervals in the circumferential direction. Each opening 8 has a substantially trapezoidal shape extending in the radial direction of the main body 4. Light emitting structure 2
Are positioned and held at the periphery of each opening 8. The inside of the light emitting structure 2 and the accommodation room 7 is sealed so as to be waterproof to the outside.

The circuit board 6 is a printed wiring board made of synthetic resin and formed in a substantially circular shape. The circuit board 6 supports a plurality of LEDs 14 corresponding to the plurality of light emitting structures 2. Further, the circuit board 6 includes a plurality of circuits electrically connected to the plurality of LEDs 14, a plurality of LEDs 1, respectively.
4 and a control circuit for controlling the blinking operation of the plurality of LEDs 14 and the like, which are integrally formed. Each LED 14 is attached to the circuit board 6 so as to face rearward in the same direction, and in this state, is arranged facing the reflection surface 11 of the corresponding light emitting structure 2.

FIG. 2 is a partial sectional plan view of the light emitting structure according to the first embodiment of the present invention. The light emitting structure 2 includes a case 15 having a concave portion 16 and the above-described reflective surface 11 formed in the concave portion 16, and a globe 17 attached to a front portion of the case 15 and covering the reflective surface 11. ing. The recess 16 of the case 15 is recessed rearward. Almost the entire inner surface of the concave portion 16 is deposited with aluminum and functions as the reflecting surface 11 that reflects light.

The case 15 and the glove 17 are L
By receiving the light from the ED 14 and emitting the light forward in a large area, it functions as a light emitting unit capable of realizing high visibility. As described above, the light emitting structure 2 includes one long reflecting surface 11 and one LED 14 arranged to face one end 12 of the reflecting surface 11. The reflecting surface 11 includes a first reflecting region 21 disposed at one end 12 of the reflecting surface 11 and a first reflecting region 2
1 and a second reflection area 22 arranged at a distance in the longitudinal direction of the reflection surface 11 (see arrow L).

The light (see arrow H1) emitted from the LED 14 is applied to a first reflection area 21 and a second reflection area 22.
Are sequentially reflected. During this time, the light travels backward, then in the longitudinal direction, toward the other end 13 side, and forward, in a folded manner, and is emitted toward the front of the reflecting surface 11 (arrow H).
2, H3, H31). Thereby, the LED 14 emits light from a large area corresponding to almost the entire length of the long reflecting surface 11 and the light emitting structure 2 is made thin while the LED 14 is connected to the long reflecting surface 1.
It is possible to reduce the number so that it can be arranged only at one end 12 of one. For example, high visibility over a large area and thinning can be achieved with a minimum of a single LED 14. Note that a plurality of LEDs 14 may be provided for one reflection surface 11.

Further, in the light emitting structure 2, a part of the circuit board 6 and a part of the first reflection area 21 of the reflection surface 11 are arranged so as to overlap each other when viewed from the front. LED1
Reference numeral 4 partially overlaps the glove 17 in a side view. In a fifth embodiment to be described later, the circuit board 6 and the globe 17 partially overlap each other in a side view. The LED 14 and the circuit board 6
It is also conceivable to arrange at least a part of the globe 17 and the reflection surface 11 so as to overlap with each other in a side view, thereby contributing to a reduction in the thickness of the light emitting structure 2.

The LED 14 is a light emitting diode. Light emitting diodes usually consume less power and have a longer life than light bulbs. The LED 14 is fixed to the circuit board 6 and attached to the main body 4, is fitted in the positioning hole 50 of the globe 17, and is positioned with respect to the reflection surface 11. FIG. 3 is a front view of the reflection surface of the light emitting structure shown in FIG. 2 and illustrates a state where a glove is removed. Please refer to FIG. 2 and FIG.

The reflection surface 11 has a substantially trapezoidal shape that is long in one direction when viewed from the front. The shape of the reflecting surface 11 has a pair of short sides facing each other in the longitudinal direction and a pair of long sides facing each other in a substantially U shape. The reflection surface 11 is formed to be narrow on one end 12 side in the longitudinal direction and wide on the other end 13 side. In addition, the shape of the reflection surface 11 may be a substantially trapezoidal shape, a substantially fan shape long in the radial direction, or a polygon such as a rectangle or a triangle. The long reflecting surface 11 is preferable when a light emitting diode is used as a light source. Because usually,
The light emission angle of the light emitting diode is limited. This is because a large-area reflecting surface 11 can be obtained while adjusting to the limited irradiation range.

In the reflection surface 11, the first reflection area 21 is narrower than the second reflection area 22 in a front view. In particular, the first reflection area 21 is shorter than the second reflection area 22 along the longitudinal direction of the reflection surface 11. Also,
If the reflection surface 11 has a wide shape at the other end 12 side, the second reflection region 22 can be easily widened, which is preferable for light emission in a large area. The first and second reflection regions 21 and 22 are arranged along the longitudinal direction of the reflection surface 11 and are separated by a predetermined distance. Here, the predetermined distance is a distance between the central positions of the first and second reflection regions 21 and 22, and the first and second reflection regions 21 and 22 may be adjacent to each other.

The reflection surface 11 restricts the number of reflections of the light from the LED 14 to the globe 17 mainly to two times, so that excessive attenuation of the light due to multiple reflections is suppressed. it can. The first reflection region 21 includes a plurality of, for example, three reflection portions 23, 24, and 25, and the second reflection region 22 includes a plurality of, for example, three reflection portions 26, 27, and
28. The plurality of reflection portions of each of the reflection regions 21 and 22 include:
They are arranged along the longitudinal direction of the reflection surface 11. Each of the reflection portions 23, 24, and 25 of the first reflection region 21 transmits the light (see the arrow H1) emitted from the LED 14 to the second reflection region 22.
(See arrow H2).

The plurality of reflection portions 23 to 28 of the first and second reflection regions 21 and 22 are arranged in steps opposite to each other. Reflection surface 1 serving as first reflection region 21
The portion 1 and the portion of the reflection surface 11 that becomes the second reflection region 22 overlap in a side view in which the line of sight is parallel to the longitudinal direction. Further, a part of the plurality of reflection portions 26, 27, 28 of the second reflection region 22 are similarly overlapped with each other in a side view, which is preferable for thinning.

Each of the reflecting portions 23 to 28 is formed of a flat surface. In addition, you may form each reflection part 23-28 with a curved surface. Adjacent reflecting portions are connected via connecting portions 29, 30, 31. The connection parts 29, 30, 31 can reflect light. The connecting portion 29 separates the reflecting portions in the front-back direction. The connection portions 30 and 31 separate the reflection portions in the longitudinal direction. Further, each of the reflection portions 23 of the first reflection region 21,
Reference numerals 24 and 25 make the average direction of the reflected light substantially parallel to the longitudinal direction of the reflecting surface 11 while maintaining the degree of light diffusion between the received light and the reflected light. A plurality of reflecting portions 23, 2
4 and 25 regulate the average direction of the reflected light to be substantially parallel to each other, thereby suppressing an increase in the size of the second reflection region 22 in the front-rear direction when the second reflection region 22 is separated by a long distance in the longitudinal direction. be able to.

Each of the reflection portions 2 of the second reflection region 22
Nos. 6, 27 and 28 turn the average direction of the reflected light forward while maintaining the degree of light diffusion between the received light and the reflected light. Part of the light from the LED 14 is
It reaches the glove 17 via 26. The light that has reached the globe 17 is diffused largely in accordance with the optical path length between the reflection portions 23 and 26 because the degree of light diffusion is maintained by the reflection portions 23 and 26, and is emitted from a part of the globe 17 in a large area. . Similarly, the light that has passed through the pair of the reflecting portions 24 and 27 and the pair of the reflecting portions 25 and 28 also has the globe 1 located at a different position in the longitudinal direction.
7 (corresponding reflecting portions 26 of the second reflecting region 22,
27, 28 ahead. ) Is emitted over a large area.
In this manner, light emission over a large area of the entire globe 17 corresponding to the size of the reflection surface 11 is realized. Also, L
Part of the light emitted from the ED 14 is directly reflected by the reflection surface 11.
And is reflected forward.

At the same time, the light emitted from the LED 14 is transmitted to the plurality of reflecting portions 23, 24, 2 of the first reflecting area 21.
Divided by five. The separated light is reflected by the corresponding reflecting portion 26,
27, 28, and these reflecting portions 26, 27, 28
A plurality of high-brightness portions 34 that are brighter than the surroundings are formed thereon. As a result, the alerting function can be enhanced by the strong light from the high-luminance section 34. The light emitting structure 2 includes a reflecting surface 1
It further includes a pair of auxiliary reflecting surfaces 33 erected along one pair of side edges 32. A pair of side edges 32 on which the auxiliary reflection surface 33 is erected opposes in the lateral direction of the reflection surface 11 in a front view. Note that the auxiliary reflection surface 33 may be provided upright along at least one side edge 32 of the reflection surface 11.

A part of the light emitted from the LED 14 is directly applied to the auxiliary reflection surface 33, and another part of the light from the LED 14 is reflected by the first reflection area 21 and is subsequently subjected to the auxiliary reflection. Irradiation is performed on the surface 33 (see arrow H4). The light thus irradiated is guided to the second reflection area 22 via the auxiliary reflection surface 33 to form the high-luminance portion 35 (arrow H).
5). The pair of auxiliary reflection surfaces 33 are LEDs 1 when viewed from the front.
4 and the first and second reflection regions 21 and 22 are disposed on both sides of the reflection region. Each auxiliary reflection surface 33 is provided with a reflection surface 11.
Along the longitudinal direction from the vicinity of the LED 14 to the reflecting surface 11.
And a flat surface extending linearly up to the vicinity of the other end 13. The pair of auxiliary reflecting surfaces 33 is provided at one end 1 of the LED 14.
The interval on the two sides is narrow, and the interval on the other end 13 side is wide. The angle formed by the pair of auxiliary reflection surfaces 33 is set in accordance with the spread angle of the light from the LED 14 (corresponding to the angle range through which relatively strong light passes; see the angle D in FIG. 3). The angle formed by each auxiliary reflecting surface 33 with respect to the longitudinal direction of the reflecting surface 11 is
The angle from which the light from the LED 14 reaches the plurality of reflection portions 26, 27, 28 of the second reflection region 22 via the auxiliary reflection surface 33 to form the high-luminance portion 35 is set. Further, the pair of auxiliary reflection surfaces 33 are arranged so as to be line-symmetric with respect to a straight line passing through the center position of the LED 14 and being parallel to the longitudinal direction of the reflection surface 11. Thereby, the plurality of reflection portions 2 of the second reflection region 22 near the pair of auxiliary reflection surfaces 33 are formed.
Clear bright portions 35 can be easily formed on 6, 27, and 28, respectively.

On each of the reflecting portions 26, 27 and 28, a high-luminance portion 35 obtained by light from the auxiliary reflecting surface 33;
The high-intensity part 34 obtained by the light directly radiated from the first reflection area 21 is obtained at different positions separated from each other. For example, on each of the reflection portions 26, 27, and 28 of the second reflection region 22, one high-intensity portion 34 at the center and a pair of high-intensity portions 35 near the side edges 32 on both sides are provided. It is formed. As a result, a single LED1
By the light from 4, a total of 9 high-luminance sections 34, 3
5 are formed.

The globe 17 is formed of a colorless and transparent translucent member. Note that the globe 17 may be colored as long as it has translucency. Glove 17
It has a window portion 41 through which light passes, and an attachment portion 42 formed in a frame shape around the periphery of the window portion 41 and attached to the case 15. The outer surface of the window 41 functions as a light emitting surface 43 from which light is emitted. The window 41 of the globe 17 of the present embodiment is formed of a flat plate having both a light emitting surface 43 and a back surface 44 thereof that are smooth, flat and parallel, and have a constant plate thickness. The window 41 made of this plate causes the reflected light from the second reflection area 22 to go straight forward (see arrow H31). In addition, the light emitting surface 43 is disposed facing directly in front.

In the second embodiment, the window 41 of the globe 17 is different from that of the first embodiment as shown in a partial sectional plan view of FIG. Hereinafter, the same reference numerals are given to the same components, and the description thereof will be omitted. Note that the description of other embodiments described later is omitted in the same manner. In the window 41 of the globe 17 of the second embodiment, the light emitting surface 43 is formed to be smooth and flat, and the back surface 44 has a large number of rib-shaped diffusion lenses 45. A diffusion lens 45 is provided on the entire area of the window 41. On the back surface 44, a number of convex surfaces 46 having a semicircular cross section extending in a direction orthogonal to the longitudinal direction of the reflective surface 11 are formed in a line in the longitudinal direction, and a region of the globe 17 corresponding to each convex surface 46 is formed by a diffusion lens 45. Each is composed.
Each diffusing lens 45 emits light from the reflecting surface 11 so as to increase the degree of diffusion, and diffuses and emits light toward the periphery including the front (see arrow H32) and the oblique front (see arrow H33). Thereby, visibility from a wide range around the light emitting surface 43 can be secured.

In the first embodiment, the visibility from the front can be increased. On the other hand, in the second embodiment, the visibility from the front decreases, but the visibility from the oblique front increases. . Therefore, in order to appropriately adjust the visibility from the front and the visibility from the oblique front, the ratio of the portion where the diffusion lens 45 is provided to the entire area of the window 41 may be appropriately adjusted. In particular, in the gloves 17 of the following third and fourth embodiments, visibility from diagonally forward can be enhanced while maintaining high visibility from the front.

In the third embodiment shown in FIGS. 5 and 6, and the fourth embodiment shown in FIG. 7, the window 41 of the glove 17 is formed by the diffusion of the window 41 of the glove 17 of the second embodiment. A part of the lens 45 is omitted. Third and fourth
The window 41 of the globe 17 in the embodiment has a lens forming area 47 for diffusing the reflected light from the second reflection area 22 forward and diagonally forward, and the reflected light from the second reflection area 22. And a lens non-forming region 48 for moving straight forward. The non-lens forming region 48 is arranged on the second reflection region 22 in front of at least one of the high-brightness portions 34 and 35. A lens forming area 47 is provided in a portion of the window 41 other than the lens non-forming area 48.

The window 41 of the lens forming area 47 has a diffusion lens 45. Window 41 of lens non-forming area 48
The light emitting surface 43 and the back surface 44 are both smooth, flat and parallel, and do not include the diffusion lens 45. In the third and fourth embodiments, the lens non-formation region 48 allows the strong light from the high-brightness portions 34 and 35 located in the back to go straight without being diffused, thereby enhancing the function of calling attention to the front. (See arrow H31) At the same time, the visibility from obliquely forward can be increased by the lens formation region 47 (see arrow H34).

Further, the non-lens forming region 48 corresponds to the high-luminance portion 3.
The lens forming area 47 is disposed in front of the lens
Is arranged around the lens non-forming region 48,
It is preferable to enhance the alerting function and increase the visibility. In particular, in the third embodiment, the lens non-forming region 48
Are all the reflection portions 26, 27, 2 of the second reflection region 22.
8 and is disposed in front of all the high-luminance portions 34 and 35 on the second reflection region 22. As a result, the same high visibility from the front as when the diffusion lens 45 is not provided at all can be realized, and the visibility from the oblique front can also be improved.

In the fourth embodiment shown in FIG. 7, the ratio of the lens forming region 47 to the lens non-forming region 48 is increased as compared with the third embodiment, and the visibility from obliquely forward is further improved. Can be. Non-lens forming area 4
Reference numeral 8 is arranged in front of the high-brightness portion 35 formed by light from the auxiliary reflection surface 33 and in which the light tends to be relatively weak. A lens forming area 47 is arranged in front of the high-brightness section 34.

The light from the high-intensity portion 34 is further diffused in the lens forming region 47 and is irradiated forward and obliquely forward (see the dashed-dotted arrows H32 and H33 on the right end in FIG. 5). On the other hand, the light from the high-brightness section 35 travels straight as it is in the non-lens forming area 48 and is irradiated forward (see the arrow H31 in FIG. 5). At this time, the light from the high-luminance part 34 is
Since the intensity is sufficiently strong even after passing through the lens forming region 47, the intensity of the light from the high brightness portion 35 can be maintained at a level comparable to the intensity of the light obtained after passing through the non-lens forming region 48. As a result, all the high-luminance portions 34 and 35 can contribute to enhancing visibility from the front.

In the fifth embodiment, as shown in FIG.
The light emitting surface 43 of the globe 17 is different from the second embodiment,
It consists of a smooth flat inclined surface 49. The inclined surface 49 is inclined toward the side. The side here is the reflective surface 1
One end 12 of the reflection surface 11 is a direction along the longitudinal direction
From the other end 13. In the inclined surface 49, a portion of the reflection surface 11 on the side closer to the one end 12 is formed to protrude relatively forward compared to a portion of the reflection surface 11 on the side closer to the other end 13. The inclined surface 49 is exposed to the side and can be seen from the side.

In the case of the light emitting surface 43 including the inclined surface 49, the light from the reflecting surface 11 can travel to the side through the light emitting surface 43, so that the visibility from the side can be improved. In particular, by providing the window portion 41 with the diffusion lens 45 in the same manner as in the second to fourth embodiments, a part of the light transmitted through the window portion 41 is surely directed to the side (see arrow H35). Since the amount of light traveling toward can be increased, the visibility from the side can be further enhanced.

For example, when the light emitting structure 2 of the fifth embodiment is radially arranged on the warning light 1, the light is not only forward but also radially outward of the main body 4 from the entire circumference of the main body 4. It is emitted radially. Note that the inclined surface 49 may be provided only on a part of the light emitting surface 43, or a plurality of inclined surfaces 49 may be included in the light emitting surface 43. Further, the inclined surface 49 may be directed to a direction included in a plane orthogonal to the front-rear direction. When the light emitting surface 43 includes a plurality of inclined surfaces 49, the directions in which the plurality of inclined surfaces 49 face may be different from each other. Further, the inclined surface 49 may be formed of a curved surface, and its direction may be continuously changed.

For example, when the light emitting surface 43 is formed as a convex curved surface protruding forward at the center thereof, the visibility of the light emitting structure 2 itself can be enhanced in multiple directions. Visibility from the surroundings when provided can be further enhanced. As described above, according to the warning light emitting structure 2 of each embodiment of the present invention, the long reflecting surface 11 in which the LED 14 is arranged to face the one end 12 is provided, and the reflecting surface 11 is an LE.
The light from D14 is reflected in a folded shape and emitted forward. Thereby, while the small number of LEDs 14 are arranged opposite to the one end 12 of the long reflecting surface 11, the entire long reflecting surface 11 can be effectively used to enhance the visibility in a large area, and This can be realized as a thin light emitting structure 2 in the front-back direction.

The first and second reflection areas 21 and 21
By providing a plurality of reflecting portions 23 to 28 corresponding to each other, a plurality of high-luminance portions 34 are obtained in each of the reflecting portions 26, 27, 28 of the second reflecting region 22 by light from one LED 14. And higher visibility can be realized. In addition, high visibility and thinness due to the large area are reduced by a small number of L
The function and effect that can be realized by the ED and the function and effect of obtaining the high-luminance portion 34 can be substantially achieved by the plurality of step-like reflecting portions 23 to 28.

The number of the high-luminance portions 34 and 35 of the second reflection area 22 can be increased by reflecting the light escaping to the side of the reflection surface 11 by the auxiliary reflection surface 33 for effective use. In particular, the auxiliary reflecting surface 33 is
, The number of high brightness portions 34 and 35 can be further increased. In the light emitting structure 2 for a warning light according to the third and fourth embodiments, the globe 17 includes at least one high-intensity portion 34 on the second reflection region 22.
A non-lens forming area 48 disposed in front of 35 and a remaining lens forming area 47 are included. Thereby, while the visibility from the oblique front is enhanced by the diffused light passing through the lens forming region 47, the strong light from the high luminance portions 34 and 35 is directly advanced through the lens non-forming region 48 as it is, and the high visibility from the front is obtained. Can be secured.

In the fifth embodiment, the glove 17
The light emitting surface 43 includes an inclined surface 49 inclined toward the side. Accordingly, light can be emitted to the side, and visibility from the side can be improved. here,
In order to enhance the visibility from the side, the light emitting surface 43 may include an inclined surface 49 inclined toward the side. In a conventional structure in which a lens is arranged in front of an LED that emits light forward and emits light, when the thickness is reduced, the diffusion distance between the LED and the lens is reduced to only a short distance corresponding to the thickness of the light emission structure. It cannot be secured and can emit light only in a small area. On the other hand, in the light emitting structure of the present invention, the diffusion distance from the LED 14 to the light emitting surface 43 is set to be long corresponding to the distance in the longitudinal direction of the reflecting surface 11 even if the light emitting structure is made as thin as the conventional structure. Since the distance can be secured, light can be emitted from the second reflective region 22 having a large area. Therefore, in the present invention which can emit light in a large area, the number of LEDs 14 for emitting light from the same area can be reduced as compared with the conventional structure having a small area.

The first and second reflection areas 21 and
2 has a plurality of reflectors 23 to 28, respectively, so that the reflectors 23 to 28 can be arranged with a high degree of freedom. As a result, a large number of high-luminance parts 34 can be easily obtained while being thin. Further, in the warning light 1 of the present invention, by arranging the plurality of long light emitting structures 2 in a long shape on the disk-shaped main body 4, it is possible to emit light from a wide range over substantially the entire main body 4. In addition, since the LEDs 14 of the all-light emitting structure 2 can be concentrated near the center of the main body 4, these LEDs 14 can be mounted on a single small circuit board 6 that can be arranged at the center of the main body 4. Becomes possible.

Therefore, an LED for emitting light from a large area
Combined with the effect of the present light emitting structure 2 that can reduce the number of components 14, the number of parts can be reduced, and assembling can be reduced accordingly, and the warning lamp 1 with high visibility can be realized at low cost. Further, the circuit board for connecting the LED 14 can be integrated with a circuit board for the driving circuit of the LED 14 which is originally required. In this case, there is no need to separately provide a circuit board for connecting the LED 14, and in addition to this, the connection between the circuit boards can be omitted, and parts such as a harness for connection and connection work can be omitted. it can. As a result, component costs and assembly costs can be significantly reduced.

Further, since the entire light emitting structure 2 can be made thin with a small number of parts, the warning light 1 can be reduced in weight. Also, for example, a conventional warning light of a type in which the LEDs are arranged forward requires a large number of LEDs of about 50 to 170, but the warning light 1 of the present invention requires, for example, about six LEDs. Only a few LEDs need to be used, LE
The number of D can be significantly reduced.

As described above, the light emitting structure 2 and, consequently, the warning light 1
Since the number of LEDs 14 can be significantly reduced, power consumption can also be reduced. In the above-described embodiment, each of the first and second reflection regions 21 and 22 has three reflection portions, but the number and shape of the reflection portions are not particularly limited. For example, the number may be 1, 2, 4, or more. Further, in each of the above-described embodiments, the LED 14 of the light emitting structure 2 is a single LED.
4 may be provided. In this case, a plurality of LEDs 1
With the bright light from 4, the visibility from one reflection surface 11 can be further enhanced. When a plurality of LEDs 14 are provided, it is conceivable to arrange a plurality of, for example, two LEDs 14 close to each other in the light emitting structure 2 of each of the above-described embodiments. In this case, each LED 1
4, each part of the light emitting structure 2, for example, the reflecting surface 1
1, the globe 17 and the like can be used as each other. In short, in the light emitting structure 2, the long reflecting surface 11 corresponding to the single LED 14 is set, and the set reflecting surface 11 is set.
It is only necessary that the LED 14 is arranged to face the one end 12 of the light emitting element 12. Similarly, it is only necessary that the configuration other than the reflection surface 11 corresponds to the single LED 14.

It is also conceivable that a plurality of the light emitting structures 2 described above are provided adjacent to each other and the cases 15 of the plurality of light emitting structures 2 are integrated. For example, as shown in the front view of FIG. 9, a partition plate 18 for partitioning the case 15 is provided, a plurality of long recesses 16 are defined in the case 15, and the LEDs 14 are arranged at one end of each recess 16 in the longitudinal direction. Then, the main light emitting structure 2 may be configured in each recess 16. Although not shown,
The globes 17 corresponding to the plurality of recesses 16 may be integrated or may be separate bodies.

In short, the light emitting structure 2 is composed of one or more LEDs.
Can be used. In addition, the light emitting structure 2 may include a display device that displays various information and signals in addition to the above-described warning light 1.
The present invention may be applied to a signboard, a display device such as a tail lamp of an automobile, or the like. In addition, various design changes can be made without changing the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is a front view of a warning light according to an embodiment of the present invention.

FIG. 2 is a partially sectional plan view showing a first embodiment of a light emitting structure of the present invention.

FIG. 3 is a front view of a reflection surface of the light emitting structure shown in FIG. 2,
The state where the glove was removed is illustrated.

FIG. 4 is a partial sectional plan view showing a second embodiment of the light emitting structure of the present invention.

FIG. 5 is a partially sectional plan view showing a third embodiment of the light emitting structure of the present invention.

FIG. 6 is a front view of the light emitting structure shown in FIG. 5, in which a lens forming region is hatched.

FIG. 7 is a front view showing a light emitting structure according to a fourth embodiment of the present invention, in which a lens forming region is hatched.

FIG. 8 is a partial sectional plan view showing a fifth embodiment of the light emitting structure of the present invention.

FIG. 9 is a front view showing a light emitting structure according to a sixth embodiment of the present invention, with a glove removed.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 warning light 2 warning light emitting structure 3 legs 4 body 11 reflection surface 12 one end of reflection surface 14 LED 17 globe 21 first reflection region 22 second reflection region 23, 24, 25 Reflection of first reflection region Portions 26, 27, 28 Reflection portion of second reflection region 32 Side edge of reflection surface 33 Auxiliary reflection surface 34, 35 High brightness portion 43 Light emission surface 47 Lens formation region 48 Lens non-formation region 49 Inclined surface H1 LED irradiates Light H3 Reflected light from the second reflection area H4, H5 Part of light emitted from the LED F Front L Longitudinal direction of reflection surface (side)

Claims (7)

[Claims] 1. An LED comprising: a long reflective surface; and an LED disposed opposite to one end of the reflective surface, wherein the reflective surface includes a first reflective region disposed at one end of the reflective surface; A second reflection area disposed at a distance from the first reflection area in the longitudinal direction of the reflection surface, and the light emitted from the LED includes a first reflection area and a second reflection area.
A light emitting structure for a warning light, wherein the light is sequentially reflected on the reflecting area and is emitted in front of the reflecting surface. 2. The warning light emitting structure according to claim 1, wherein each of the first and second reflection regions includes a plurality of reflection portions, and each reflection portion of the first reflection region includes an LED. A light emitting structure for a warning light, wherein the emitted light is reflected toward a corresponding reflection portion of the second reflection region. 3. The warning light emitting structure according to claim 2, wherein the plurality of reflecting portions of the first and second reflecting regions are:
A light emitting structure for a warning light, wherein the light emitting structure is arranged in a stepped shape in opposite directions. 4. The warning light emitting structure according to claim 1, further comprising an auxiliary reflecting surface erected along at least one side edge of said reflecting surface, and illuminated by an LED. A part of the emitted light is guided to the second reflection area via the auxiliary reflection surface to form a high-luminance part. 5. The light emitting structure for a warning light according to claim 1, further comprising: a globe that covers a front of said elongated reflecting surface, wherein said glove is provided from a second reflecting area. A lens forming region for diffusing the reflected light obliquely forward, and a lens non-forming region for causing the reflected light from the second reflecting region to go straight forward; and at least one height above the second reflecting region. A light emitting structure for a warning light, wherein a non-lens forming region is arranged in front of the luminance portion. 6. The light emitting structure for a warning light according to claim 1, further comprising a globe covering a front of said elongated reflecting surface, wherein the light emitting surface of said globe is directed sideways. A light emitting structure for a warning light, characterized in that the light emitting structure includes an inclined surface that is inclined. 7. A plurality of light emitting structures according to any one of claims 1 to 6 provided radially on a disk-shaped main body supported by legs and directed forward, and each of the light emitting structures has a reflection surface on the LED side. A warning light, characterized in that one end is arranged near the center of a disk-shaped main body.