JPH0610322Y2 - LED reflector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a reflector for an LED, and more particularly to a reflector for guiding the light generated by the LED to the display unit side while reflecting the light.

[Outline of device]

In the present invention, for example, when a surface illumination LED is used to form a surface illumination, a reflector which is conventionally integrated is divided into a tip side and an LED side, and the two parts are assembled together. This is to form one reflector, thereby ensuring ease of assembly.

[Conventional technology]

A conventional LED light emitting device using a reflector is constructed as shown in FIG. That is, LE on the circuit board 1
The D2 is mounted via the lead leg 3, and the position of the LED 2 in the height direction is regulated by the spacer 4 attached to the outer peripheral side of the lead leg 3. Then, the reflector 5 fitted to the LED 2 is attached by engaging the engaging portion 6 with the engaging hole 7 of the circuit board 1. The diffusion sheet 8 is attached so as to cover the front end side opening of the reflector 5, and the light diffused by the diffusion sheet 8 illuminates the display plate 11 attached so as to face the opening 10 of the cabinet 9. By using such a reflector 5,
By using the small surface emitting LED 2, it is possible to uniformly guide light to the display plate 11 having a relatively large area for display.

[Problems to be solved by the invention]

According to the conventional display device using such an LED 2,
Within the outer dimensions of the reflector 5, other circuit components may be mounted on the circuit board 1 or the circuit board 1
However, there is a drawback in that it is not possible to attach screws for fixing the to the chassis or the like. Further, even if the cabinet 9 is removed, the LED 2 is covered by the reflector 5, so that the LED 2 and parts in the vicinity thereof cannot be easily repaired, and there is a problem that serviceability is poor.

The present invention has been made in view of such problems, and it becomes possible to mount other circuit components and the like on the circuit board within the outer dimensions of the reflector, and at the same time, the assemblability and serviceability are improved. L to improve
It is intended to provide a reflector for ED.

[Means for solving problems]

The present invention relates to an LED reflector for guiding the light generated by an LED to a display unit while reflecting the light, wherein a root-side portion where the reflector holds the LED and a cone-shaped opening from a tip end portion of the root-side portion. And a tip side portion that is arranged so as to spread and forms a reflector, the root side portion is arranged on a circuit board on which the LED is mounted, and the light end side portion faces the display unit. Is provided so as to be attachable to and detachable from the opening of another board, and other parts are arranged on the circuit board in a region corresponding to the inside of the outer circumference of the tip end side portion. The present invention relates to a characteristic LED reflector.

[Action]

The LED mounted on the circuit board is held by the base side portion of the LED reflector arranged on the circuit board. Then, the light generated by the LED is guided by the root side portion and the tip side portion constituting the reflector which is arranged so as to spread in a cone shape from the tip opening of the root side portion, and The display unit is guided by the display unit facing the tip of the portion and makes the display unit shine.

〔Example〕

FIG. 1 shows a display device having a reflector of the embodiment, in which a small surface emitting LED 15 is mounted on a circuit board 17 by a pair of lead legs 16.
Not only the LED 15 but also other circuit components 18 are mounted on the circuit board 17, and further, the circuit board 17 is attached to the mounting portion 19 of the chassis by the screw 20.
Is fixed. The reflector 22 for reflecting the light of the LED 15 has a front end portion 23.
And a portion 24 on the base side or the LED side. Both the tip-side portion 23 and the root-side portion 24 are made of synthetic resin. The LED 15 is inserted and held in a through hole formed at the center of the root-side portion 24.

A portion 23 on the tip side of the dividing surface 25 of the reflector 22
Is to be locked by a locking leg 26 in a locking hole 28 of another substrate 27. Then, another substrate 27 is fixed to the cabinet 29 via a fixing means (not shown). An opening 30 is formed in the cabinet 29, and a semitransparent display plate 31 is attached to the opening 30. A diffusion sheet 32 is attached to the lower side of the display plate 31, and the reflector 22 is attached.
The light reflected by is diffused and guided to the display plate 31.

According to the display device including the LED 15 as described above, the circuit component 18 and the screw 20 can be mounted on the circuit board 17 within the range of the maximum diameter of the reflector 23. The circuit board 17 can be effectively used. Again cabinet 2
When 9 is removed, the circuit board 27 connected to this cabinet 29 is removed. Further substrate 27
The upper portion of the reflector 22, which is supported by the locking legs 26, will also be removed together. Therefore, the screw 20 can be easily removed, and the serviceability is improved. Further, this improves the workability of assembly. Further, according to such a display device, the base side portion 24 of the reflector 22 also serves as the spacer of the LED 15, which brings an advantage that the number of parts is reduced.

Next, a modified example of the above embodiment will be described with reference to FIG. In the following modified examples, parts corresponding to those of the embodiment shown in FIG. 1 are designated by the same reference numerals, and description of parts having the same configuration is omitted.

The feature of the modification of FIG. 2 is that the diameter d of the inner edge portion of the upper end of the LED-side portion 24 of the reflector 22 is made different from the inner diameter D of the lower end of the upper portion 23, and D is d
The value is set to a larger value. In this way, by changing the dimensions of the upper surface 23 and the lower surface 24 in the dividing surface 25, the misalignment is allowed only in the portion corresponding to the difference in diameter between the two, and thereby the surface emission. It is possible to make the assembly size rough without deteriorating the performance of. This makes assembly easier.

In another modification shown in FIG. 3, the upper part 23 and the lower part 24 of the reflector 22 have different diameters D at their dividing surfaces 25, as in the above modification.
And set it to d. Further, a step portion is provided on the outer peripheral portion of the upper end of the lower portion 24 so that a gap h is provided between the upper portion 23 and the lower portion 24 on the dividing surface 25. Therefore, not only the misalignment in the radial direction but also the variation in the height direction or the axial direction is allowed, and it becomes possible to further facilitate the assembling without reducing the light amounts of both the emitted lights.

Further, in this modified example, as shown in FIG. 4, a pair of locking legs 35 is provided on the lower end side of the lower portion 24 of the reflector 22, and these locking legs 35 are provided on the circuit board 17. It is designed to be inserted into the engaging hole 36 of the above and attached. Therefore, according to such a structure, the assembling is further facilitated.

[Effect of device]

As described above, the present invention comprises a root side portion where the reflector holds the LED, and a tip side portion which is arranged so as to spread in a cone shape from the tip opening of the root side portion to form the reflector, The root side part is arranged on the circuit board on which the LED is mounted, and the tip side part is attached to and detached from the opening of another board so as to face the display part, and the outer periphery of the tip side part Other components are arranged on the circuit board in a region corresponding to the inside.

Therefore, there is no need to attach the tip side portion, which is arranged so as to spread in a cone shape from the tip end opening of the root side portion of the LED reflector, to the circuit board on which the LED is mounted, on this circuit board. , Other parts are arranged on the circuit board in the area corresponding to the outer peripheral side of the root side part and the inner side of the outer circumference of the tip side part, and this area of the circuit board is effectively arranged. Will be available. Also, since the tip side of the LED reflector is attached to and detached from the opening of another board so as to face the display section, the top side of the reflector can be arbitrarily removed during repair or assembly. Will be able to. This makes it possible to improve serviceability and assemblability.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a display device using a reflector according to an embodiment of the present invention, FIG. 2 is a vertical sectional view showing a reflector of a modified example, and FIG. 3 is a vertical sectional view showing a reflector of another modified example. FIG. 4 is an exploded perspective view showing the locking structure of the lower portion of the same, and FIG. 5 is a vertical sectional view of a display device using a conventional reflector. In the reference numerals used in the drawings, 15 ... LED 17 ... Circuit board 18 ... Other circuit parts 22 ... Reflector 23 ... Tip side 24 ... LED side (root side) 26 ... ... Locking leg 27 ... Other substrate 28 ... Locking hole (opening) 31 ... Display plate.

Claims (1)

[Scope of utility model registration request] 1. An LED reflector for guiding the light generated by an LED to a display unit while reflecting the light, wherein a root-side portion where the reflector holds the LED and a cone-shaped opening from a tip end portion of the root-side portion. And a portion on the tip side that is arranged so as to spread to form a reflector, the portion on the root side is arranged on the circuit board on which the LED is mounted, and the portion on the tip side faces the display unit. Is provided so as to be attachable to and detachable from the opening of another board, and other parts are arranged on the circuit board in a region corresponding to the inside of the outer circumference of the tip end side portion. Characteristic LED reflector.