JPH034049Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention itself has predetermined light distribution characteristics,
The present invention relates to light emitting diode lamps that are used singly or in a group as vehicle lighting or for displaying consumer and industrial equipment.

(Prior Art) This type of independent light emitting diode lamp is constructed by attaching a light emitting diode chip c (hereinafter referred to as an LED chip) to one of two lead wires a and b, as shown in FIG. A wire d is bonded between the wire d and the other lead wire b, and the ends of the lead wires a and b, the LED chip c, and the wire d are molded with resin e to form a lamp.

Therefore, the lamp itself using this type of LED chip does not have any light distribution characteristics, so when using it for display purposes, it is necessary to use a reflector or cut a lens with good light distribution characteristics. It has the disadvantage of requiring the use of a special lens and requiring extra parts.

In addition, prior patent applications filed by the same applicant for lighting equipment using a plurality of LED chips include Japanese Patent Application No. 58-153757, Japanese Patent Application No. 236527-1980, Utility Model Application No. 59-46375, and Utility Model Application No. 1987-46376. inventions and devices have been proposed.
However, all of them are printed wiring on a wide board, many LED chips are arranged, and all the LED chips are covered with a single lens, so one LED chip cannot be used independently. There are drawbacks. In particular, some lenses have a lens cut that gives them light distribution characteristics.
In its usage mode, the size of the substrate and the lens is restricted to a certain level, and there is a drawback that the size and shape of the lamp lacks versatility.

(Problems to be solved by the invention) The invention solves the problem that when a single LED chip is used to form an independent lamp, it does not have its own light distribution characteristics, and even when many LED chips are used in parallel. This is an attempt to solve the problem of lack of versatility due to size and shape.

(Means for Solving the Problems) The present invention was made to solve the above problems, and the specific means is to print wiring on the board and place the LED chip approximately in the center. A light emitting diode unit is formed which is electrically connected to the light emitting diode unit, and a lens is attached onto the light emitting diode unit via an insulating adhesive, and the lens faces the LED chip in order to provide a predetermined light distribution characteristic. A light-emitting diode lamp characterized in that a central portion of the lamp is formed into a convex surface, and a cut having a shark-tooth cross section is provided to surround the convex surface,
LED chips are individually placed on the board, and lenses with unique light distribution characteristics are integrally attached, so no other lenses are required whether you use them alone or in parallel. Furthermore, when a large number of lenses are used, they can be used arbitrarily and appropriately without being restricted by the shape and size of the substrate or lens, resulting in excellent versatility.

(Embodiments) Next, the present invention will be explained in more detail with reference to illustrated embodiments. 1 is a light emitting diode unit;
In this unit, a printed wiring 3 is provided from the top surface to the side surface of a substrate 2 having a substantially rectangular shape, and an LED chip 4 is disposed in electrical connection with the printed wiring. In this case, the LED chip 4 is positioned approximately at the center of the board 2, placed on one printed wiring, and electrically connected to the other printed wiring by bonding a wire 5. .

A lens 7 is integrally attached to this substrate 2 via an insulating adhesive 6 to complete a light emitting diode lamp. The lens 7 in this case has a generally rectangular shape and has a unique lens cut on the inside.

That is, as shown in FIG.
A convex surface 8 is formed at the central portion facing the surface, and a cut 9 having a shark-tooth cross section is provided to surround the convex surface. This shark-tooth-shaped cut 9 is formed not only to surround the convex surface 8 but also to surround the LED chip 4.

To explain the relationship between the lens cut configured in this way and the light emitted from the LED chip 4, the light that reaches the convex surface 8 passes through the lens as it is and is irradiated from the front surface of the lens 7 as primary refracted light x. The light that has reached the inner surface 9a of the cut enters the lens from the inner surface, is reflected by the outer reflective surface 9b, and is emitted from the front surface of the lens 7 as secondary refracted light y. If it is desired to further diffuse or condense the light emitted from the lens 7, the cut conditions of the convex surface 8 and the shark-tooth cut 9 may be changed as appropriate. In other words, the curved surface of the convex surface 8 may be changed or the inclination angle of the outer reflective surface of the shark-toothed cut 9 may be changed.

It goes without saying that the LED chip 4 can be used independently as a light-emitting diode lamp with unique light distribution characteristics, but it can also be used with other relatively wide prints, for example as shown in Figure 4. It is also possible to use a large number of them by placing them on the printed wiring 11 on the board 10 and connecting the printed wiring 3 on the side surface to the printed wiring 11 respectively. Even when used in this way, each light emitting diode has its own unique light distribution characteristics, so there is no need for additional lenses, and even if the overall shape and size of the printed circuit board differs, it can be placed where it is needed. You can install as many light emitting diode lamps as you need.

(Effects of the invention) As explained above, the light emitting diode lamp according to the invention includes one LED chip disposed on a substrate, and a cut shape having a shark-tooth cross section with a convex central part on the inner surface. Because the lens is attached integrally with adhesive,
The lamp itself has predetermined light distribution characteristics due to its convex surface and shark-tooth cut, and the lamp itself can be used independently without the need for other lenses, providing excellent illuminance and eliminating the need for extra lenses. This has the excellent effect of simplifying the configuration during use.

Furthermore, even when using a large number of lamps and displays, any number of lamps can be used in any position without being restricted by the shape and size of the lamp or display, and even in this case, it is possible to It also has the effect of being excellent in versatility without being limited by shape or size.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a light emitting diode lamp according to the present invention, Fig. 2 is a perspective view of the lamp in a completed state, Fig. 3 is a sectional view taken along the - line in Fig. 2, and Fig. The figure is a partial perspective view showing another example of the lamp in use, and FIG. 5 is a sectional view of a conventional light emitting diode lamp. 1...Light emitting diode unit, 2...Substrate,
3...Printed wiring, 4...LED chip, 5...
... wire, 6 ... insulating adhesive, 7 ... lens, 8 ... convex surface, 9 ... shark-tooth-shaped cut in cross section.

Claims (1)

[Scope of utility model registration request] A light emitting diode unit is formed by printing wiring on a board and placing an LED chip approximately in the center and electrically connecting it, and attaching a lens to the light emitting diode unit via an insulating adhesive. A light-emitting diode lamp characterized in that the lens has a convex central portion facing the LED chip in order to provide a predetermined light distribution characteristic, and a cut having a shark-tooth cross section is provided to surround the convex surface.