JPH0621085U - Indicator light cover - Google Patents

Abstract

(57) [Abstract] [Purpose] A cover with a predetermined shape is attached to an indicator lamp such as an LED lamp to prevent diffusion of radiated light, and the mounting posture is always kept in a vertical state to achieve high density. Eliminates various problems when implemented. [Structure] An enclosure 21 of a cover 20 is attached around the LED lamp 1 mounted on a printed circuit board 4 by locking pieces 22 to the board 4, and the enclosure 21 prevents diffusion of light from the LED lamp 1. Thus, the LED lamp 1 emits light only in one direction, and the mounting posture of the LED lamp 1 is always maintained in a vertical state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cover attached to an indicator lamp such as an LED lamp used in a display unit of various electronic and electric devices and automobiles.

[0002]

[Prior art]

 In recent years, the cost of LED lamps (light emitting diodes) as indicator lamps has decreased and the number of colors of light has increased significantly. Therefore, they are used in large quantities in display parts of various electronic and electric devices and automobiles. The display method is not only to blink the LED lamps, but also to draw numbers, characters, graphs, etc. using LED lamps of various colors, and to display various information such as detected amount, manipulated amount, and control status. We are aiming to display in an easy-to-understand manner.

On the other hand, electronic and electric devices are becoming smaller and smaller, and the spread of LED lamps makes it possible to reduce the space of the display unit itself. LED lamps tend to be packaged in high density. Therefore, in the display unit, a large number of LED lamps that use various colors and are configured in various display forms are arranged in a state where the LED lamps are adjacent and close to each other. For this reason, light of different colors emitted from multiple LED lamps diffuses in a state of being adjacent to each other, which makes it difficult for the lights of the respective colors to interfere with each other and to be clearly discriminated. This point should be improved. Is desired.

Further, generally, as a method of mounting the LED lamp on the printed circuit board, the lead wire of the LED lamp is welded on the back side of the printed circuit board. In order to protect the LED element, which is weaker to heat than this welding heat, the LED lamp is mounted at a predetermined height above the printed circuit board. For this reason, when a large number of LED lamps are mounted at high density, the heights of the individual LED lamps should be accurately aligned, or the mounting posture should be maintained vertically so that the spacing between adjacent LED lamps is constant. It is necessary to ensure the positioning.

Conventionally, as an auxiliary tool for an indicator lamp such as the above LED lamp, there is an LED spacer shown in FIG. That is, the LED lamp 1 has an LED element 2 provided with a chip of a light emitting diode that emits light of a predetermined color, a lens that emits the light to the surroundings, and the like. The lead wire 3 is provided with a predetermined strength so that it can be directly attached and supported. Further, the spacer 10 is formed with a groove 11 having a predetermined length into which the lead wire 3 is inserted. Therefore, the spacer 10 is installed below the LED element 2 through the lead wire 3 in the groove 11, and the spacer 10 is placed on the printed circuit board 4 to set the height of the LED element 2 to a constant value. It is shown that the ends of 3 are soldered to mount the LED lamp 1 on the substrate 4 at a predetermined height.

[0006]

[Problems to be solved by the device]

 By the way, in the above-mentioned prior art, since the spacer 10 is provided below the LED element 2, the mounting height of the LED lamp 1 can be fixed, but in particular, the LED element 2 is Since the whole is exposed and mounted, there is a problem in that it is not possible to prevent light interference when the LED lamps 1 of various colors are mounted at high density.

The present invention has been made in view of this point, and an indicator lamp such as an LED lamp is provided with a cover having a predetermined shape to prevent radiated light from being diffused, and the mounting posture is always vertical. The purpose is to secure various conditions and solve various problems in high-density mounting.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has an enclosure provided around an indicator light mounted on a substrate, and this enclosure prevents light from diffusing from the indicator light so that only one direction light is emitted. It is formed so as to radiate and the enclosure is attached to the substrate. According to a second aspect of the present invention, the enclosure includes an enclosure that covers the periphery of the indicator lamp and blocks diffusion of the light, and is provided at one end of the enclosure to regulate the light of the indicator lamp in one direction. And an engaging portion projecting from the other end of the surrounding portion and attached to the substrate side in a one-touch manner. Further, in the invention according to claim 3, the indicator lamp is an LED lamp, and the enclosure houses the bending portion of the lead wire, which has a function of relatively tightly fitting the LED element and holding the mounting posture vertically. It has a function or a function of holding the LED element at a predetermined height.

[0009]

[Action]

 Based on the above configuration, the enclosure is mounted around the indicator lamp that is erected on the substrate, so that the light emitted from the indicator is restricted by this enclosure so that it radiates as a spot in only one direction. . As a result, even when indicator lights of various colors are mounted at high density, light of each color can be emitted without interference and the contents of the display can be clearly recognized. Further, according to the second aspect of the invention, the light of the indicator lamp is surely regulated and emitted in one direction by the surrounding portion and the opening of the surrounding body, and the surrounding body is easily attached to the substrate by the locking portion. Further, according to the third aspect of the invention, the LED lamp used for the indicator lamp is securely held in the vertical mounting posture by the enclosure, so that the LED lamp is prevented from being displaced.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the structure of the LED lamp and the cover will be described. The LED lamp 1 has an LED element 2 provided with a chip of a light emitting diode that emits light of a predetermined color, a lens that emits the light to the surroundings, and the like. Lead wire 3 is provided. The lead wire 3 is formed by bending the end portion by the forming process to the outside, and can be mounted and supported at a predetermined height by the bent portion 3a.

As shown in FIGS. 1 and 2 to 4, the cover 20 has an enclosure 21 made of a material such as resin, and two locking portions 22 are integrally formed at one end of the enclosure 21. The enclosure 21 is formed with a bulge portion 21b having a larger diameter than that of the enclosure portion 21a below the enclosure portion 21a. The inner diameter of the surrounding portion 21a is set to be slightly larger than the outer diameter of the LED element 2, and the surrounding portion 21a can be fitted to the outside of the LED element 2 to maintain its mounting posture. Moreover, the wall thickness of the surrounding portion 21a is set so as to block the transmission of the light diffused and emitted from the LED element 2 to the surroundings. The bulging portion 21b is formed so as to be able to accommodate the bent portion 3a of the lead wire 3, and the end face 21c of the bulged portion 21b can contact the surface 4a of the printed circuit board 4 in a vertical state. The total length of the enclosing portion 21a and the bulging portion 21b is set equal to the total length of the LED element 2 and the bent portion 3a of the lead wire 3, that is, the LED lamp mounting height. The light is regulated and emitted in one direction only from the opening 21d at one end of the surrounding portion 21a.

The locking portion 22 is formed so as to open in a V shape in a free state, and a claw 22 a is provided at a position separated by the thickness of the printed circuit board 4. The printed circuit board 4 has two holes 5 into which the lead wires 3 are inserted, and the claws 22a are retained when the locking portion 22 is inserted at a position that is circumferentially displaced from the holes 5. Two mounting holes 6 are provided to be locked.

Next, referring to FIG. 5, the mounting operation of the LED lamp 1 and the cover 20 will be described. First, when the two lead wires 3 of the LED lamp 1 are inserted into the holes 5 of the printed circuit board 4, the bent portion 3a is placed on the surface of the board 4, and in this state, the ends of the lead wires 3 are connected to the circuit of the board 4. By fixing the LED lamp 1 by soldering it to the LED lamp 1, the LED element 2 is mounted at a predetermined height from the substrate 4 and mounted substantially vertically. After that, the cover 20 is fitted into the LED lamp 1 and the engaging portion 22 is pushed into the mounting hole 6 of the board 4, whereby the claw 22a is engaged with the back surface 4b of the board 4, and the cover 20 is a one-touch type board. It is attached to 4. In this way, the enclosure 21 of the cover 20 is covered with the same height of the circumference of the LED lamp 1, and especially when the enclosure 21a is tightly fitted to the LED element 2 and the vibration or the like acts, the LED is always illuminated. It is supported so that the mounting position of the lamp 1 is kept vertical. Further, the LED element 2 is prevented by the cover 20 from being directly touched and damaged by an adjacent member.

When the LED element 2 is energized via the lead wire 3 by the printed circuit board 4, the LED element 2 emits light, and at this time, the periphery of the LED element 2 is shielded by the surrounding portion 21a and diffused. The light H of a predetermined color is radiated as a spot in one direction only from the opening 21d at the tip of the surrounding portion 21a. Therefore, when a large number of LED lamps 1 of various colors are mounted at high density in the display section, the light of each color emits spotwise in the same direction, which causes interference of light of a plurality of colors. After that, the contents of each color display will be clearly recognized.

Another embodiment after FIG. 6 will be described. FIG. 6 shows a case where the lead wire 3 of the LED lamp 1 is straight, and the enclosure 21 of the cover 20 is formed to have the same diameter accordingly. For example, a support piece 23 is provided inside the enclosure 21 to determine the lamp height. Is projected. Other than that, the configuration is similar to that of the above-described embodiment, and the same portions are denoted by the same reference numerals and the description thereof will be omitted. Therefore, in this embodiment, the LED lamp 1 and the cover 20 are mounted together on the printed circuit board 4, and the height of the LED element 2 is kept constant by the support piece 23 inside the enclosure 21.

In FIG. 7, a flexible cylinder port 24 is attached to the tip of the enclosure 21 of the cover 20, and other than that, the configuration is the same as that of the embodiment of FIG. 6, and the same parts are designated by the same reference numerals. Is attached and the description is omitted. Therefore, in this embodiment, the direction of the light H emitted from the LED lamp 1 can be arbitrarily determined by the direction of the tube opening 24.

Although the embodiment of the present invention has been described above, it is needless to say that the present invention can be similarly applied to an indicator lamp other than the LED lamp 1 and further a marker lamp having a large shape.

[0018]

[Effect of device]

 As described above, according to the present invention, the indicator lamp such as the LED lamp of the display section is covered with the cover so as to prevent the diffusion of the light and emit the light in one direction. When a large number of indicator lights of different colors are mounted at high density, light interference is prevented and the contents of the display can be clearly recognized. For this reason, the display becomes very easy to see, and it is possible to add more multicolor displays accordingly. Since the mounting position of the indicator light is maintained vertically by the cover, the positional relationship can be reliably positioned, and damage or displacement of the indicator light can be prevented even when vibration acts. By the way, stability and reliability are improved. Since the cover is attached to the board by the one-touch type with the locking part, the attachment is easy.

[Brief description of drawings]

FIG. 1 is an overall exploded perspective view showing an embodiment of an indicator light cover according to the present invention.

FIG. 2 is a plan view of a cover.

FIG. 3 is a side view of the same.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a cross-sectional view showing an attached state of an LED lamp and a cover.

FIG. 6 is a cross-sectional view showing a second embodiment of the present invention.

FIG. 7 is a sectional view showing a third embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a conventional LED spacer.

[Explanation of symbols]

 1 LED lamp 2 LED element 3 Lead wire 4 Printed circuit board 20 Cover 21 Enclosure 22 Locking part

Claims (3)

[Scope of utility model registration request] 1. An enclosure is provided around an indicator lamp attached to a substrate, and the enclosure is formed so as to prevent light from diffusing from the indicator lamp and emit light in only one direction.
A cover for an indicator lamp, characterized in that this enclosure is attached to a substrate. 2. The enclosure comprises an enclosure that covers the periphery of the indicator lamp to block the diffusion of light, and is provided at one end of the enclosure to radiate the indicator light in one direction. The cover for an indicator lamp according to claim 1, further comprising: an opening portion and a locking portion that is provided at the other end of the surrounding portion so as to project and is attached to the substrate side in a one-touch manner. 3. The indicator lamp is an LED lamp, and the enclosure has a function of fitting the LED element relatively tightly to hold the mounting posture vertically, a function of accommodating a bent portion of the lead wire, or an LED. The indicator lamp cover according to claim 1, which has a function of holding the element at a predetermined height.