JP2002312892A - Light emitting body and signal light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light emitting body and a signal light which have long lives and efficiently emit light and have less unevenness of the light quantity. SOLUTION: The light emitting body 1 is provided with a post 2, a printed board 3 provided on the post, LED fixing base support parts 6A, 6B, 6C, and 6D coaxially provided in the center part of the post 2, printed boards 7A, 7B, 7C, and 7D attached to the LED fixing base support parts 6A, 6B, 6C, and 6D, LEDs 8 attached to the printed board 3, and LEDs 9A, 9B, 9C, and 9D attached to printed boards 7A, 7B, 7C, and 7D, and each of LED fixing base support parts 6A, 6B, 6C, and 6D is provided with an LED attaching face 60 which controls the direction of each of LEDs 9A, 9B, 9C, and 9D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a light emitter and a signal light using a ght emitting diode (light emitting diode) and suitable for a traffic signal light, and more particularly to a light emitter and a signal light that have a long life, can emit light with high efficiency, and have less uneven light quantity.

[0002]

2. Description of the Related Art As a conventional luminous body, for example, Japanese Unexamined Patent Application Publication No.
There is one disclosed in 00-294002.

FIG. 7 shows this luminous body. The luminous body shown in FIG. 1 includes a support 2, an upper printed board 3 provided on the support 2, a radiator plate 5 provided on the back surface of the upper printed board 3 via an insulating plate 4, and a center of the support 2. The first, second, third and fourth printed circuit boards 7 (7
A, 7B, 7C, 7D) and a plurality of LEs provided on the upper printed circuit board 3 and the first to fourth printed circuit boards 7.
D8, 9 (9A, 9B, 9C, 9D), a plug (base 13) provided at the lower part of the column 2, and the AC power supplied from the base 13 is converted into DC to obtain the operating voltage of the LEDs 8, 9. And an electric circuit board (not shown) which is adjusted and supplied to the LEDs 8, 9 on each of the substrates 3, 7. Casing 15
Has a dome shape such as a hemisphere made of aluminum,
The reflection plate 16 is provided inside. The LED 8 is mounted on the upper printed circuit board 3 facing forward, and the LED 9
A to 9D are attached to the printed circuit boards 7A to 7D so as to go from the dome-shaped center of the casing 15 to the reflection plate 16. The light emitted by the LED 8 attached in this way goes forward as it is, and the light emitted by the LED 9 is reflected by the reflector 16 and goes forward.

[0004]

However, according to the conventional luminous body, the LE attached to the first to fourth substrates 7 is required.
Since D9 is attached by bending the lead wire,
There is a problem that the directions of the LEDs 9 are not uniform, and when the LED 9 is mounted on a traffic signal light, the light amount becomes uneven.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a light emitter and a signal light which have a long life, can emit light with high efficiency, and have less uneven light quantity.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a column and a first column provided at an end of the column.
A plurality of first LEDs attached to the first substrate in the axial direction of the support, a plurality of support portions provided at different positions in the axial direction of the support, A plurality of LED mounting surfaces formed on the support portion and having an angle corresponding to the position of the support portion; a plurality of second substrates mounted on the plurality of support portions; and a seating surface on the plurality of LED mounting surfaces. And a plurality of second LEDs attached to the plurality of second substrates in contact with each other.

According to the present invention, in order to achieve the above object, a plurality of Ls are provided in a casing having a dome-shaped reflector on the inner surface.
In a signal light provided with a light emitting body that reflects light generated from an ED by the reflecting plate and irradiates the light forward, the light emitting body includes a plurality of support portions provided at different positions in an axial direction of the casing; And a plurality of LED mounting surfaces to which the plurality of LEDs are mounted by contacting the seating surfaces of the plurality of LEDs at an angle corresponding to the position of the supporting portion. A signal light is provided.

[0008]

1 and 2 show a luminous body according to an embodiment of the present invention. FIG. 1 (a) is a plan view, FIG. 1 (b) is a front view, and FIG. 2 is a longitudinal sectional view. It is. This luminous body 1
A support 2, an upper printed circuit board 3 provided on the upper part of the support 2, a radiator plate 5 made of, for example, aluminum provided on a back surface of the upper printed circuit board 3 via an insulating plate 4,
First, second, third and fourth LED fixing bases 6 (6A, 6B, 6C, 6D) provided at the center of the support 2
And first, second, third and fourth doughnut-shaped printed circuit boards 7 (7A, 7A) provided on each LED fixing base 6.
B, 7C, 7D), a plurality of LEDs 8 connected to the printed board 3, and first to fourth printed boards 7A, 7
B, 7C, 7D connected to a plurality of LEDs 9 (9A, 9D).
B, 9C, 9D), a power supply case 10 provided below the LED fixing base 6 and accommodating the power supply 11;
It is provided with a vibration damping rubber 12 for damping vibrations to D8 and D9, and a base 13 to which AC power is supplied. 1 and 2
The middle 14 is a fixing bolt for fixing the assembly of the upper printed board 3, the insulating plate 4, and the heat sink 5 to the female screw 20b of the column 2.

The strut 2 has a small diameter portion 20 having a hollow portion 20a, a female screw 20b and an insertion hole 20c, and a large diameter portion 2 having a hollow portion 21a communicating with the hollow portion 20a of the small diameter portion 20.
It consists of 1.

The LEDs 8 and 9 are, for example, unified into any one of red, green and blue, and a plurality (for example, 312) of LEDs are provided so as to obtain the same brightness as a conventional incandescent lamp.
Is used. The LED 8 is attached to the upper printed circuit board 3 by a lead wire 81 in a straight state.
D9 is attached to the printed circuit boards 7A, 7B, 7C, 7D by the lead wires 91 bent in advance.

Each LED fixing base 6 has a hollow portion as shown in FIG.
Is provided with an LED mounting surface 60 with which the LED mounting surface contacts. Also, the first
-The fourth LED fixed bases 6A, 6B, 6C, 6D
An upper portion is provided with fitting projections 61A, 61B, 61C, 61D, and includes first to third LED fixing bases 6A, 6B, 6C.
Has fitting recesses 62A, 62B, 62C fitted to the fitting protrusions 61B, 61C, 61D at the lower part. After attaching the printed circuit board 7 to each LED fixing base 6, the LED 9
The light emitting portion 90 is assembled by abutting the bottom 90a of the light emitting portion 90 on the LED mounting surface 60, connecting the lead wire 91 to the printed circuit board 7, and combining these LED fixing bases 6 in the axial direction.

The power supply 11 is connected to the base 13 through the AC power supply line 1.
13 to convert the AC power supplied to the
A power supply board 110 for generating a D operating voltage;
Connector 11 for supplying ED operating voltage to each of LEDs 8 and 9
1 and a harness 112. The base 13 is compatible with an incandescent light bulb of a conventional traffic signal light.

The power supply case 10 includes a base 10B to which the power supply board 110 is mounted, and a cover 10A for protecting the power supply 11 together with the base 10B. Cover 1
A plurality of insertion holes 10a for inserting the harness 112 and an insertion hole 10b for inserting the AC power supply line 113 are formed in 0A.

The support 2, the LED fixing base 6, and the power supply case 10 are made of heat-resistant and weather-resistant plastic such as ABS.

FIG. 3 shows a circuit diagram of the luminous body 1. The LEDs 8 on the upper printed circuit board 3 are configured by connecting 16 LEDs 8 in series and connecting three of them in parallel. LEDs on first to fourth printed circuit boards 7A to 7D
Each of 9A to 9D is configured by connecting 12 LEDs 9A to 9D in series and connecting two of them in parallel. The power supply unit 11 includes a varistor 114 that absorbs a surge voltage, a transformer 115 that converts an AC input voltage into a predetermined voltage, a rectifier circuit 116 that rectifies an output voltage of the transformer 115,
And a smoothing constant voltage circuit 117 for generating an LED operating voltage by smoothing the output voltage of the rectifier circuit 16.

FIGS. 4, 5 and 6 show a method of assembling a traffic light. As shown in FIGS. 1 and 2, the LED 8 is connected to the surface of the upper printed circuit board 3, and the heat sink 5 is attached to the back surface of the upper printed circuit board 3 via the insulating plate 4.
Also, as shown in FIG. 4A, the first, second, third and fourth prints are respectively provided on the first, second, third and fourth LED fixing bases 6A, 6B, 6C and 6D. Substrate 7
A, 7B, 7C, 7D are attached, and the connector 111 is attached. For each printed circuit board 7A, 7B, 7C, 7D,
As shown in FIGS. 4A and 4B, the LEDs 9A, 9B,
9C and 9D are connected. At this time, the LEDs 9A, 9B, 9C, 9D are inserted into the grooves 64 provided on the LED mounting surface 60.
Insert the lead 91 of the
It is brought into contact with an arc-shaped wall 63 provided on the D fixed base 6A. As a result, each of the printed circuit boards 7A, 7A, 7B, 9C, 9D has its lead 91 bent in advance.
B, 7C, and 7D can be easily attached. Also,
Flange 92 of light emitting section 60 of LEDs 9A, 9B, 9C, 9D
Is brought into contact with the wall 63, so that the LEDs 9A, 9B,
Positioning of 9C and 9D becomes easy. FIG. 4 (b)
Shows one LED 9A attached to the first LED fixing base 6A, but LEDs 9B, 9C, 9D for another LED 9A and other LED fixing bases 6B, 6C, 6D.
Are similarly configured. Fitting recesses 62A, 62B, 6
The LED fixing bases 6A, 6B, 6C, 6D are assembled in the axial direction by fitting the 2C into the fitting projections 61B, 61C, 61D. The upper printed board 3, the insulating plate 4, the radiator plate 5, and the LED fixing bases 6A, 6B, 6C, 6D are attached to the columns 2, connected to the connector 111 by the harness 112, and the power supply case 10 having the power supply substrate 110 therein. ,
The vibration damping rubber 12 and the base 13 are assembled. After assembling the luminous body 1 in this way, as shown in FIG. 5, the luminous body 1, the casing 15 having the reflection plate 16, and the transparent lens 17 are assembled. Thus, the traffic light shown in FIG. 6 is assembled. As shown in FIG. 6, the LED mounting surface 60 shown in FIGS. 2 and 4 has LED fixing bases 6A to 6D so that the light from the LEDs 9A to 9D is reflected by the reflection plate 16 and irradiated substantially parallel to the front. The angle is set according to. The transparent lens 17 preferably has a high light transmittance and is stable against ultraviolet rays, temperature changes, and the like so as to withstand long-term outdoor use.

The luminescent colors of the LEDs 8 and 9 are unified to any one of blue, yellow and red for the luminous body 1. When power is supplied to the base 13, the luminous body emits light in that color and emits the light. 6 travels in front of the signal light as shown by the arrow in FIG. 6 and is transmitted through the transparent lens 17 to the outside to operate as a signal light.

According to the above embodiment, since the direction of the LED 9 is determined by the LED mounting surface 60 of the LED fixing base 6, even if it is mounted instead of an incandescent lamp of a traffic signal light,
No uneven light quantity. In addition, since the LEDs 8 and 9 have a service life that is five times or more longer than that of the incandescent lamp, it is possible to reduce the time and effort for replacing the light emitter. In addition, since the LEDs 8 and 9 require only 1/10 or less the power consumption of the incandescent lamp, it is possible to contribute to resource saving. In addition, a light amount equal to or greater than that of an incandescent lamp can be obtained with low power consumption, so that highly efficient light emission can be performed. Furthermore, LED
8 and 9 are connected in parallel, so one LED 8,
Even if the LED 9 is damaged and turned off, it is possible to prevent all the LEDs 8 and 9 from being turned off, so that a safe traffic signal light can be provided. The LED 8 on the upper printed board 3 has a higher mounting density than the LEDs 9 on the other boards 7 and is a main heat source of the luminous body 1 and generates a large amount of heat. Since it is emitted from the heat sink 5 to the outside, LED
8 can be extended. Also, the casing 15
The lens 17 provided in the front opening of the lens is a transparent lens unlike a conventional color lens. Therefore, when the light-emitting body 1 emits blue, yellow, and red light, Even when the light is received, the sunlight incident on the luminous body 1 is reflected by the reflecting plate 16 and remains in the transparent lens 1 while being white.
7, the light is emitted to the outside, so that even if the light emitter 1 is turned off, the viewer does not mistakenly recognize as if the signal light is on.

[0019]

As described above, according to the present invention, L
Since the direction of the ED is determined by the LED mounting surface of the support portion, even if the ED is mounted instead of the incandescent lamp of the traffic signal light, unevenness in the light amount does not occur. In addition, since the LED is used as the light source, light emission with a long life and high efficiency can be performed.

[Brief description of the drawings]

FIG. 1 shows a luminous body according to an embodiment of the present invention,
(A) is a plan view and (b) is a front view.

FIG. 2 is a longitudinal sectional view of a light emitting body according to the embodiment of the present invention.

FIG. 3 is a circuit diagram of a luminous body according to the embodiment of the present invention.

4A is a cross-sectional view for explaining a method for assembling a light-emitting body according to an embodiment of the present invention, and FIG.

FIG. 5 is an exploded perspective view for explaining a method of assembling the traffic light according to the embodiment of the present invention.

FIG. 6 is a sectional view of the traffic signal light according to the embodiment of the present invention.

FIG. 7 is a sectional view of a conventional traffic light.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 luminous body 2 support 3 upper printed board 4 insulating plate 5 radiator plate 6A, 6B, 6C, 6D LED fixing base 7A, 7B, 7C, 7D printed board 8, 9A, 9B, 9C, 9D LED 10 power supply case 10A cover 10B Base 10a, 10b Insertion hole 11 Power supply unit 12 Vibration isolation rubber 13 Cap 14 Fixing bolt 15 Casing 16 Reflector 17 Transparent lens 20 Small diameter portion 20a Hollow portion 20b Female screw 20c Insertion hole 21 Large diameter portion 21a Hollow portion 60 LED Mounting surface 61A to 61D Fitting convex part 62A to 62C Fitting concave part 63 Wall 64 Groove 80 Light emitting part 81 Lead wire 90 Light emitting part 90a Bottom part 91 Lead wire 92 Flange part 110 Power supply board 111 Connector 112 Harness 113 AC power supply line

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masafumi Murakami 4-26-11 Higashi-Oizumi, Nerima-ku, Tokyo Stock Company Konamiuchi (72) Inventor Satoru Ebihara 4-26-11, Higashi-Oizumi, Nerima-ku, Tokyo Stock Company light wave F term (reference) 5H180 GG00 GG15 HH14

Claims (3)

[Claims] 1. A column, a first substrate provided at an end of the column, a plurality of first LEDs mounted on the first substrate in an axial direction of the column, and the column. A plurality of support portions provided at different positions in the axial direction of the plurality of; a plurality of LED mounting surfaces formed on the plurality of support portions and having an angle corresponding to the positions of the support portions; A plurality of second substrates provided, and a plurality of second LEDs attached to the plurality of second substrates with a seating surface abutting on the plurality of LED mounting surfaces. Luminous body. 2. The luminous body according to claim 1, wherein said plurality of support portions include a fitting portion integrated by combining with each other. 3. A signal lamp comprising a luminous body for reflecting light generated from a plurality of LEDs on said inner surface of a casing having a dome-shaped reflective plate and irradiating the light forward with said luminous body. A plurality of support portions provided at different positions in the axial direction of the casing, and the plurality of LED seats formed at the plurality of support portions and having angles corresponding to the positions of the support portions are in contact with each other. And a plurality of LED mounting surfaces on which the plurality of LEDs are mounted.