JPH052902A - Light emitting diode unit of indication lamp - Google Patents

Abstract

PURPOSE:To provide possibility of changing the relative installation position of a holder with a reflex frame without disassembling the LED unit once assem bled. CONSTITUTION:A guide window 25 and round windows 26 are furnished at the leg 190 of a reflex frame 110. A guide projections 27 and a plurality of round projections to be fitted in these windows are provided protrusive at an arm 220 on a holder 150, and the holder 150 and reflex frame 110 are installed with slidability in the crosswise direction to each other. Each round projection 28 on the holder 150 shall be hemispherical. The number of round projections installed shall be odd, and they are arranged at a constant pitch symmetrically about the center4 of the holder 150.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting diode unit for illuminating an illumination surface of a display lamp which receives light from a light emitting diode and illuminates the illumination surface from the inside of a box.

[0002]

2. Description of the Related Art An indicator lamp of this type is, for example, an actual Kaihei 2-62.
It is well known from the 482 publication. FIG. 4 is an exploded perspective view showing a configuration example of a conventional indicator lamp. The illuminated surface 1A is formed by stacking a square colored transparent color plate 2A made of a thermoplastic resin, a name plate 3A for diffusing light, and a colorless transparent transparent plate 4A. The illuminated surface 1A is fitted into the lamp lid frame 5A formed in a square frame from the front side in the drawing. The light emitting diode unit 6A is formed as an illuminating body that illuminates the illuminated surface 1A from the back side of the drawing, and is fitted on the back side of the lamp lid frame 5A (the light emitting diode is hereinafter abbreviated as LED). L
The ED unit 6A is fitted into the square section 8A or 80A of the box body 7 of the indicator lamp and forms one of the square illuminated surfaces of the indicator lamp.

On the other hand, in FIG. 4, an illuminating surface 1B is formed by a rectangular color plate 2B, a name plate 3B and a transparent plate 4B, and is fitted into a lamp lid frame 5B having a rectangular frame. The two LED units 6B, 6C are assembled in the lamp lid frame 5B in a state of being adjacent to each other, and are fitted in the rectangular section 8B of the box body 7. LED unit 6
B and 6C form one of the rectangular illumination surfaces of the indicator light, and are almost twice as large as the square illumination surface.

FIG. 5 is an exploded perspective view showing the detailed structure of the LED unit shown in FIG. LE on the surface of the printed circuit board 9
The D elements 10 are arranged in the vertical and horizontal directions. In the reflection frame 11, a through hole 13 formed in an inverted truncated pyramid shape is formed between opposing frame members 12. The exits of the through holes 13 correspond to the array positions of the LED elements 10 on the bottom surface side 14 of the reflection frame 11, respectively, and the inner wall surface of the through holes 13 forms a light reflection wall surface, and a transparent seal is formed inside the light reflection wall surface. It is filled with a stopper. The holder 15 which is integrated with the reflection frame 11 is provided with two stepped cylinders 16, into which flat rivets 17 are inserted, and then a compressible coil spring 18 is inserted. ing. In the state where the coil spring 18 is inserted in the stepped cylinder 16, the upper end portion projects to the outside. On the back side of the printed circuit board 9, wiring (not shown) for supplying power to the LED element 10 is formed, and an electrode surface (not shown) is formed at a position facing the coil spring 18. By bringing the holder 15 into pressure contact with the rear surface of the printed circuit board 9, the electrode surface of the printed circuit board 9 and the coil spring 18 are brought into conductive contact. The head of the flat rivet 17 is pushed downward by the coil spring 18 to feed power to the lower end of the flat rivet 17 so that the coil spring 18 causes the L
Electric power for lighting is supplied to the ED element 10.

In FIG. 5, the reflection frame 11 is a frame member 12
With a leg portion 19 extending from the bottom side 14 of the holder 15 toward the holder 15,
Four fitting windows 20 lined up at a predetermined pitch in the lateral direction penetrate through the leg portion 19. Further, protruding ears 21 are provided on both lateral ends of the leg portion 19. The holder 15 includes an arm portion 22 extending in the direction of the reflection frame 11, and a fitting leg 23 extending in a direction opposite to the arm portion 22 and fitted and fixed to the box side of the indicator lamp. Arm
Two fitting protrusions 24 are provided on the 22 to fit the fitting window of the reflection frame 11.
They are arranged at the same pitch as 20 and are formed so that they can be fitted in any of the fitting windows 20.

By pressing the reflection frame 11 against the holder 15 from above, the fitting window 20 and the fitting projection 24 are fitted to each other, and the reflection frame 11 and the holder 15 are integrated. At that time, the fitting protrusion
By selecting a predetermined fitting window 20 from among the four fitting windows 20 into which the 24 is fitted, it is possible to adjust the lateral relative relationship in which the holder 15 and the reflection frame 11 are fixed. 6 is shown in FIG.
It is a front view which shows the structure of the LED unit which irradiates the square illumination surface. The two fitting protrusions 24A projecting from the arm portion 22A of the holder 15A are fitted to the inner two fitting windows 20A provided on the leg portions 19A of the reflection frame 11A. At that time, the protruding ears 21A are formed so as to be exactly clamped by the arm portions 22A. With this structure, the holder 15A and the reflection frame 11A are fixed to each other without being laterally displaced.

However, the LED fitted in section 8B of FIG.
Some units, such as a unit, have an illumination surface that is twice as wide as the vertical direction. In that case, the LED unit itself formed in a rectangular shape can be manufactured separately, but the number of parts of the LED unit increases. Therefore, as shown in FIG. 4, square LED units 6B and 6C are arranged side by side and fitted into the box body 7 to form only the illuminated surface 1B in a rectangular shape. When two LED units having the configuration shown in FIG. 6 are arranged side by side and only the illuminated surface is made horizontally long, the LE units are mounted in the box body 7 as shown in FIG.
Inevitably, a dark portion having the width D occurs between the D units. Stepped cylinder 16 through which flat rivet 17 for power feeding passes
In order to eliminate the dark part between the LED units, the relative fixing position between the holder and the reflection frame is shifted without changing the position of the LED (necessary for commonization of the wiring pattern on the power supply side).

FIG. 7 shows L for illuminating the rectangular illumination surface of FIG.
It is a front view which shows the structure of an ED unit. Holder 15B
The two fitting protrusions 24B protruding from the arm portion 22B of the
It is fitted into the two fitting windows 20B on the left side provided on the leg portion 19B of 11B. Similarly, the two fitting projections 24C projecting from the arm 22C of the holder 15C are the legs 19C of the reflection frame 11C.
The two fitting windows 20C on the right side are fitted to each other. In addition, at the time of assembling, one side of each of the protruding ears 21B and 21C is cut off. With this configuration, the positions of the holders 15B and 15C remain the same and the reflection frames 11B and 1
Since only 1C comes close to each other, the width d where the illuminated surface becomes dark is smaller than the width D in FIG. 4, and it is almost impossible to identify the dark portion of the illuminated surface from the outside.

[0009]

However, in the conventional device as described above, when changing the relative mounting positions of the reflection frame and the holder, the holder must be removed from the reflection frame and then reassembled. There was a problem.

In order to remove the reflection frame from the holder, it was necessary to slightly bend the legs of the reflection frame to widen the space between the legs and remove the fitting protrusion of the holder from the fitting window of the legs.
Further, the work of reassembling the fitting protrusion so as to fit it into another fitting window has been performed. Since such work is extremely difficult to perform, it requires a lot of work time. For this reason, there is a problem in that it takes a long time to bend and spread the legs of the reflection frame, and the roots of the legs are easily broken. Further, there are problems in quality control, such as the coil spring popping out during the work and the coil spring is lost or reassembled without the coil spring.

An object of the present invention is to construct an assembled LED
An object of the present invention is to provide a device in which the relative mounting positions of the holder and the reflection frame can be changed without disassembling the unit.

[0012]

In order to achieve the above object, according to the present invention, for illuminating the illumination surface of an indicator lamp which receives light from a light emitting diode to illuminate the illumination surface from the inside of a box body. A printed circuit board having a plurality of light emitting diodes arranged in a horizontal direction and a vertical direction on a surface thereof, and the illuminated surface in which light from the light emitting diodes is provided on the bottom surface side and the printed circuit board is arranged on the opposite bottom surface side. The print frame is provided with a reflection frame including a leg portion that extends from the bottom surface side of the frame member that forms the lateral direction to the side opposite to the illumination surface and an arm portion that engages with and is fixed to the leg portion of the reflection frame. In what comprises a holder that is fitted into a fixed position inside the box while forming a voltage introducing portion to the substrate, the leg portion of the reflection frame includes a guide window that penetrates in a square shape and a round window that penetrates in a circular shape, The arm of the holder is the guide window A guide protrusion that is fitted and slidable laterally along the edge of the guide window and a rounded protrusion that fits into the round window and is rounded are provided on the arm portion at a predetermined pitch. A plurality of circular projections are arranged in the same direction, and the guide projections are fitted to the guide window, and the holders are movably reflected by selecting the round projections that are fitted to the round window while sliding the holder laterally with respect to the reflection frame. It shall be attached to the frame. In addition to such a configuration, the shape of the round protrusion provided on the arm portion of the holder is a hemisphere,
Furthermore, a round window is arranged in the center of the horizontal width of the reflective frame, and an odd number of round protrusions are arranged symmetrically on both sides in the horizontal direction with the one arranged in the center of the horizontal width of the holder as a boundary. It has been done.

[0013]

According to the structure of the present invention, the reflection frame is provided at its leg portion with a guide window penetrating in a square shape and a round window penetrating in a circular shape. On the other hand, the holder has a guide protrusion and a round protrusion on its arm. The guide protrusion fits into the guide window and is configured to be slidable laterally along the edge of the guide window. A plurality of round protrusions are arranged in a lateral direction on the arm portion at a predetermined pitch and are formed in a rounded shape. The holder can be movably attached to the reflection frame by fitting the guide projection to the guide window and selecting the round projection to be fitted to the round window while sliding the holder laterally with respect to the reflection frame. With this configuration, the relative mounting positions of the assembled LED units can be changed with each other by a simple operation of pushing the reflective frame of the assembled LED unit laterally with respect to the holder.

In addition to the above structure, by making the shape of the round protrusion provided on the arm portion of the holder a hemispherical shape, when the reflection frame is pushed and slid in the lateral direction, the leg portion thereof moves above the round protrusion. Since it can be smoothly crossed, the work of changing the relative mounting positions of the holder and the reflection frame becomes easy.

In addition to the above structure, a round window is arranged in the center of the width of the reflection frame in the lateral direction, and an odd number of round protrusions are formed. Further, one round protrusion is arranged at the center of the width of the holder in the horizontal direction, and the remaining protrusions are symmetrically arranged on both sides in the horizontal direction with the center as a boundary. With this configuration,
Since the reflection frame can be slid to either side in the lateral direction with respect to the holder, it is not necessary to increase the number of parts of the LED unit.

[0016]

EXAMPLES The present invention will be described below based on examples.
FIG. 1 is an exploded perspective view showing a detailed configuration of an LED unit according to an embodiment of the present invention. The leg portion 190 of the reflection frame 110 is provided with a guide window 25 penetrating in a rectangular shape and a round window 26 penetrating in a circular shape. On the other hand, the arm portion 220 of the holder 150 is provided with a guide protrusion 27 that is fitted to the guide window 25 and is capable of laterally sliding the edge portion of the guide window 25. Further, three hemispherical round protrusions 28 projecting outward are arranged at the same pitch on the lower portion of the guide protrusion 27. One round protrusion 28 is arranged at the center of the holder 150 in the widthwise direction, and the remaining two protrusions are arranged on both sides. Since other configurations are the same as those of the conventional device in FIG. 5, the same reference numerals are used for the same portions and detailed description thereof will be omitted.

FIG. 2 is a front view showing the structure of the LED unit of FIG. 1 which illuminates a square illumination surface. Guide protrusion 27A and round protrusion 28 protruding from arm 220A of holder 150A
A is a guide window 25A provided on the leg 190A of the reflection frame 110A.
And a circular window 26A arranged in the center, respectively, and the holder 150A and the reflection frame 110A are fixed to each other in the lateral central portion.

FIG. 3 is a front view showing the structure of the LED unit 6A of which two of FIG. 1 illuminate a rectangular illumination surface.
The guide protrusion 27B protruding from the arm portion 220B of the holder 150B and the round protrusion 28B arranged on the right side of the drawing are used for the leg portion 19 of the reflection frame 110B.
The guide window 25B and the round window 26B provided in 0B are fitted respectively. Similarly, the guide protrusion 27C projecting from the arm 220C of the holder 150C and the round protrusion 28C arranged on the left side of the figure are provided with the guide window 25C and the round window 26C provided on the leg 190C of the reflection frame 110C.
Are respectively fitted to. With this configuration, the gap d between the LED units can be the same as the gap in the conventional device in FIG. 7, and the dark portion of the illuminated surface is eliminated.

In order to assemble the structure shown in FIG. 3,
For example, for the LED unit with the configuration of FIG.
When 150A is pressed laterally (rightward or leftward in the figure) against the reflection frame 110A, the leg protrusion 190A is formed because the round protrusion 28A is hemispherical.
While sliding on the surface of, slide to the next round window. On the other hand, the guide window 25A has a horizontally long opening, so that the guide protrusion 27A slides and the holder 150A and the reflection frame 110A are also fixed in the vertical direction.

The round protrusions of the holder are attached to and detached from the round window while being fitted to the legs of the reflecting frame in two directions: when the reflecting frame is fitted from above and when the reflecting frame is laterally slid. If it is hemispherical, it slides smoothly, but it may have a truncated cone shape as another shape. Further, by appropriately selecting the pitch of the round protrusions arranged on the arms, the LED unit 110A in FIG. 2 is arranged in the center, and the LED units 110B and 110C in FIG. By arranging them, it is possible to configure an indicator lamp having an illuminated surface whose width in the horizontal direction is three times that in the vertical direction.

Further, the number of round protrusions is increased to, for example, 5
By arranging the LED units 110B and 110C symmetrically in the holder, the LED units can be formed closer to the left side and the right side of the LED units 110B and 110C in FIG. LE with an illuminated surface
It can be configured without increasing the number of parts of the D unit 6A.

[0022]

As described above, according to the present invention, a guide window and a round window are provided in the reflection frame leg portion, and a guide protrusion and a plurality of round protrusions respectively fitted to these windows are provided in the holder arm portion. Therefore, the relative mounting position can be easily changed only by pushing the reflective frame laterally with respect to the holder and sliding it. Therefore, the working time can be greatly reduced, and the legs are not broken. Since it is no longer necessary to disassemble the conventional device, the coil spring is prevented from popping out and quality control is facilitated. At the contact part between the coil spring and the electrode surface of the printed circuit board, the coil spring slides on the electrode surface when sliding, so dust and adhered insulating film are scraped off, and the reliability of the contact part's conductivity is conventional. Even better than the ones.

Further, since the round protrusion of the holder arm portion is formed in a hemispherical shape, the holder and the reflection frame can be smoothly moved with each other, and the working time is shortened.

Further, by arranging the round window in the center of the reflecting frame and arranging the odd number of round protrusions symmetrically with respect to the center of the holder, the width in the lateral direction can be increased without increasing the number of parts of the LED unit. It is possible to configure an indicator lamp having an illuminated surface that is an integral multiple of the vertical width.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a detailed configuration of an LED unit according to an embodiment of the present invention.

2 is an LED for illuminating a square illuminated surface as shown in FIG.
Front view showing the structure of the unit

FIG. 3 is a view of L of FIG. 1 which illuminates a rectangular illumination surface.
Front view showing the configuration of the ED unit

FIG. 4 is an exploded perspective view showing a configuration example of a conventional indicator lamp.

5 is an exploded perspective view showing a detailed configuration of the LED unit of FIG.

FIG. 6 is a front view showing the configuration of an LED unit that illuminates the square illumination surface of FIG.

FIG. 7 is a front view showing the configuration of an LED unit that illuminates the rectangular illumination surface of FIG.

[Explanation of symbols]

110 reflective frame 150 holders 12 Frame member 13 through holes 14 Bottom side 190 legs 25 information window 26 Round window 9 printed circuit boards 10 LED element 18 coil spring 17 flat rivets 220 arms 27 Guide protrusion 28 Round protrusion 16 stepped cylinder 23 mating feet

Continued front page    (72) Inventor Shinichi Sato             1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa             Within Fuji Electric Co., Ltd.

Claims (3)

[Claims] 1. A light source for illuminating an illumination surface of a display lamp, which receives light from a light emitting diode to illuminate the illumination surface from the inside of a box, wherein the surface is provided with a plurality of light emitting diodes in a horizontal direction and a vertical direction. And a printed circuit board arranged on the bottom surface side, while guiding the light from the light emitting diode on the bottom surface side to the illumination surface arranged on the counter bottom surface side, and from the bottom surface side of the frame member forming the lateral direction to the non-illumination surface. It is equipped with a reflection frame having a leg portion extending to the side and an arm portion that engages and is fixed to the leg portion of the reflection frame, forms a voltage introducing portion to the printed circuit board, and is fitted into a fixed position in the box body. A holder that includes a guide window in which the leg portion of the reflection frame penetrates in a rectangular shape and a round window that penetrates in a circular shape, and the arm portion of the holder fits in the guide window and the edge portion of the guide window. With a guide protrusion that can slide laterally along The round window is fitted with a rounded round protrusion, and a plurality of the round protrusions are laterally arranged on the arm portion at a predetermined pitch, and the guide protrusion is fitted into the guide window and a holder is formed. A light emitting diode unit for a display lamp, wherein a holder is movably attached to the reflection frame by selecting a round projection to be fitted in the round window while sliding laterally with respect to the reflection frame. 2. The light emitting diode unit for an indicator lamp according to claim 1, wherein the round protrusions provided on the arm portions of the holder are hemispherical. 3. The device according to claim 1 or 2,
A round window is arranged in the center of the horizontal width of the reflection frame, and an odd number of round protrusions are arranged symmetrically on both sides in the horizontal direction with respect to the one arranged in the center of the horizontal width of the holder. A light emitting diode unit for an indicator lamp, which is characterized in that