JP3144867U - Light emitting diode package structure - Google Patents

Abstract

In addition to improving the positioning of an optical lens and a pedestal, a predetermined light pattern can be emitted from the optical lens, further reducing the packaging process time, and the optical lens can be easily removed and replaced from the lens holder. Provided is a light emitting diode package structure capable of realizing rapid exchange of light patterns.
A pedestal, a light emitting diode die, an optical lens, and a lens holder are mainly configured. A holder positioning hole is provided on the surface of the base, and a storage groove is provided on the side surface. The lens holder is provided with an opening, a holder positioning column, and a wedge, and the optical lens is provided between the lens holder and the pedestal and passes through the opening. The lens holder is configured to be mounted on a pedestal by being hung on a storage groove by a wedge, fitted in a holder positioning hole by a holder positioning column, and mounted on the pedestal.
[Selection] Figure 3

Description

The present invention relates to a light emitting diode package structure, and more particularly to a technical field in which a lens holder is attached to a pedestal by a latch method and an optical lens is rapidly replaced.

Light-emitting diodes (LEDs) use the principle of converting electrical energy into light energy, apply voltage to two terminals of the positive and negative electrodes of a semiconductor to flow current, combine electrons and holes, and convert energy into light energy. Released as. Furthermore, the light emitting diodes generate light sources of various wavelengths at each energy level depending on the member used. Light emitting diodes have advantages such as compact volume, fast response, and no contamination. These advantages have spread to light-emitting diodes in various industrial application fields, have progressed to high-power light-emitting diodes, and the problem of insufficient brightness has been solved. In the future, it is becoming the product with the most potential to replace conventional lighting.

United States Patent US2004 / 0126913 Japanese Patent JP 3191580 Russian Federation Patent W02006109113 Taiwan patent TW238542 Japanese patent JP2007080879 Japanese Patent JP2000150968 United States Patent US54040468 United States Patent US5068771 United States patent US20077021 United States Patent US2004190304 United States Patent US2007139931 Japanese Patent JP60198412

The light emitting diode mainly includes a pedestal, a light emitting diode die, an optical lens, and a lens fixing base. The pedestal serves for mounting the light emitting diode die and conducting the electrodes. In general, the optical lens is fixed on the pedestal by a lens holder, or a method of fixing the optical lens to the pedestal using an adhesive is used. The structure is such that, as in US 2004/0126913, an LED is incorporated into a lead frame and an optical lens is fitted into a pedestal or reflective mask. Alternatively, as in Japanese Patent JP 3191580, the light emitting diode die and the optical lens are fixed using electric contacts. Alternatively, as in Russian Patent W02006109113, an optical lens is passed through a substrate and then fixed to a molten plastic indexing means. Or it fixes using a screw or a socket (Socket) like Taiwan patent TW238542. Or the form which latches an optical lens to a base like Japanese Patent JP2007080879 is used. Other combination structures include Japanese Patent JP2000150968, United States Patents US54040468, US5068771, US2007702301, US2004190304, US2007139931, and the like. The method of filling and fixing the adhesive between the light emitting diode die and the optical lens affects the luminance by causing the adhesive to deteriorate or yellow due to heat. On the other hand, the fixing method of the optical lens by the lens holder is the most practical structure. An example is Japanese Patent JP60198412. FIG. 1 is a side view of a light emitting diode package structure using a lens holder. As shown in the drawing, the package structure 1 includes a base 10, a light emitting diode die 11, an optical lens 12, and a lens holder 13. The light emitting diode die 11 is provided on the pedestal 10, and the optical lens 12 covers the light emitting diode die, is attached between the lens holder 13 and the pedestal 10, and passes through the opening of the lens holder 13. The surface of the pedestal 10 has at least one through hole 101, and the support column 131 of the lens holder 13 passes through the through hole 101, and then the portion 19 where the support column 131 is exposed to the support column through hole of the through hole 101 is heated and dissolved. The optical lens 12 is fixed to the pedestal with the lens holder 13 by deforming and holding the support column 131 in the through hole. This main structure can fix the optical lens, and can prevent separation of the optical lens and the base caused by thermal expansion, and is particularly suitable for an LED having a special light pattern. However, an LED having a special light pattern is premised on a stable connection between the optical lens and the pedestal due to its structure. However, this type of structure hardly reaches the positioning effect between the optical lens and the pedestal, and the support column 31 needs to be melted and deformed, so that the purpose of rapid assembly cannot be achieved.

As light emitting diodes become more widespread, their application fields become wider and there is a growing demand for light emitting diodes that emit special light patterns. FIG. 2 shows a light emitting diode that emits a pentagonal light pattern. However, this type of light-emitting diode with a special light pattern affects the quality of the optical pattern when the optical lens is misaligned or slightly rotated in the package structure. Strictly required. The above-described package structure 1 of the known technique simply attaches the lens holder 13 and the optical lens 12 to the pedestal 10 by a method in which the support column 131 of the lens holder 13 is limited within the through hole 101. However, after long-term use, when the package structure is subjected to shaking or vibration due to external force, the portion 19 exposed in the through hole of the support column cannot reliably hold the support column 131 in the through hole 101. The loosening of 13 causes the optical lens 12 to move or rotate, affecting the outgoing light pattern of the light emitting diode.

In particular, when a light emitting diode in which the adhesive or the support column 131 is heated and melted and deformed is incorporated into a lamp or other light emitter, the light pattern cannot be changed because it is fixed on the light emitting diode by an optical lens. If it is necessary to change the light pattern, the set of light emitting diodes must be replaced, which may be inconvenient and costly.

In order to improve the above-mentioned problems, the inventor repeated research and design based on many years of practical experience in this field, and as a result, devised a kind of light-emitting diode package structure, and provided a method and basis for realizing the above-mentioned demand. Plan.

A type of optical pattern change that shortens the package processing time, and quickly changes the optical lens by mounting the lens holder on the base and fixing the optical lens to the base. It is a main object of the present invention to provide a light emitting diode package structure.

Based on the above-mentioned purpose, a kind of light emitting diode package structure mainly includes a base, a light emitting diode die (LED die), an optical lens, and a lens holder. At least one holder cavity is formed on one surface of the pedestal, and at least one storage channel is formed on one side of the pedestal. A light emitting diode die is mounted on the pedestal to generate a light source. The optical lens covers the light emitting diode die and collects light sources emitted from the light emitting diode die to generate a necessary light pattern. The lens holder has an opening, and one or more holder positioning columns and wedges are provided between the lens holder and the pedestal to pass through the through holes. The lens holder is fixed to the pedestal by the wedge in the storage groove. Fit the holder positioning hole into the holder positioning hole and attach it to the base.

Furthermore, the optical lens has at least one lens positioning column (lens stem), is provided with a lens positioning hole (lens cavity) in balance with the pedestal, and the optical lens is fitted into the lens positioning hole by the lens positioning column, Positioned on the pedestal.

In addition, the optical lens is provided with at least a lens alignment as necessary, and the inner wall surface of the opening of the lens holder is provided with a holder alignment along with this, and the lens holder is mounted on the pedestal. After being attached to the lens holder, the lens holder is coupled to the lens arrangement by the holder arrangement to position the optical lens.

A reflection layer may be provided on the inner wall surface of the opening of the lens holder, if necessary.
As described above, the light emitting diode package structure according to the present invention has the following advantages.
(1) The light emitting diode package structure according to the present invention can shorten the packaging process time.
(2) The light emitting diode package structure according to the present invention can more reliably attach and position the lens holder to the base.
(3) The light emitting diode package structure according to the present invention can better attach and position the optical lens to the pedestal.
(4) The light emitting diode package structure according to the present invention can easily replace the optical lens and realize rapid replacement of the light pattern.

In order to more clearly describe the present invention, it will be described in detail as follows, together with preferred embodiments and diagrams. The following embodiments are intended to explain main components of the light emitting diode package structure according to the present invention. However, a conventional light emitting diode package structure other than the package structure according to the present invention is a known technique. Therefore, those skilled in the art are not limited to the components of the light emitting diode package structure according to the present invention as described in the following embodiments. In other words, the components of the light emitting diode can be variously changed, modified, or changed in effect. For example, the optical lens shape of the light emitting diode package structure, the optical pattern, the appearance and thickness of the pedestal and the lens holder, the material, and the combination method of the positioning column and the fixing hole are not limited.

3 and 4 are an exploded external view and a side view, respectively, of a light emitting diode package structure embodiment 1 according to the present invention. As shown in the drawing, the package structure 2 includes a pedestal 20, a light emitting diode die 21, an optical lens 22, and a lens holder 23. The optical lens 22 covers the light emitting diode die 21, collects the light sources emitted from the light emitting diode die 21, and emits a necessary light pattern. The lens holder 23 is used to fix the optical lens 22 to the base 20.

One surface of the pedestal 20 has at least one holder positioning hole, and one side of the pedestal 20 has at least one storage groove. The light emitting diode die 21 is mounted on the pedestal 20 to generate a light source. Among them, the optical lens 22 is preferably made of glass or plastic and can emit a predetermined light pattern. The surface of the pedestal 20 is provided with a recessed surface as necessary to accommodate the light emitting diode die 21.

An opening 231 is provided in the lens holder 23, and at least a holder positioning column 232 and a wedge 233 are provided. The holder positioning column 232 and the wedge 233 are provided in accordance with the positions of the holder positioning hole 201 and the storage groove 202. . The optical lens 22 is provided between the lens holder 23 and the pedestal 20 and passes through the opening 231. On the other hand, the lens holder 23 is hung on the storage groove 202 by the wedge 233 and attached to the pedestal 20, and then fitted into the holder positioning hole 201 and attached to the pedestal 20 by the holder positioning column 232. With the package structure, the optical lens 22 is mounted on the pedestal using the lens holder 23.

In the package processing process, the wedge 233 is aligned with the position of the storage groove 202 and the holder positioning column 232 is aligned with the position of the holder positioning hole 201. Then, the lens holder 23 is pressed into the lower pedestal 20, and the wedge 233 is continuously pressed down against the pedestal 20. Then, the wedge 233 causes deformation and expands from the side surface of the base 20 to the outside. After the wedge 233 is pressed into the storage groove tank 202, the wedge 233 returns to its original shape due to the elasticity of the wedge 233 and is engaged with the storage groove 202. On the other hand, by pushing the lens holder 23 into the pedestal 20, the holder positioning column 232 can be fitted into the holder positioning hole 201 and the fixing of the lens holder 23 onto the pedestal 20 can be strengthened.

When changing to a lens having another light pattern, the wedge 233 of the lens holder 23 can be deformed by using a simple tool and separated from the storage groove 202, and the lens holder 23, the pedestal 20 and the optical lens 22 can be removed. After replacing the optical lens 22 with another light pattern, the optical lens 22 can be replaced without breaking the element according to the assembly method described above.

From the above description, the package structure of the known technique can shorten the package processing time compared to the light emitting diode package structure according to the present invention and the known technique, in contrast to the method of deforming the support column of the lens holder by heating and melting, Rapid replacement of optical lenses can be achieved without destroying the lens holder.

In addition, the lens holder 23 opening inner wall surface 234 may be provided with a reflection layer if necessary. As an example, aluminum, silver or an aluminum base, and a silver base are electroplated on the opening inner wall surface 234 to form a film layer, and the reflection effect of the inner wall surface 234 is improved. In addition, the appearance of the pedestal 20 is not limited to the quadrangular shape shown in FIG. 3, but can be modified as necessary. However, other pedestal appearances are still included in the scope of application of the present invention.

FIG. 5 is an exploded view of the appearance of a light emitting diode package structure embodiment 2 according to the present invention. As shown in the drawing, the difference between the package structure 3 and the package structure 2 is that the optical lens 32 provided in the package structure 3 has at least a lens positioning column 322, and the balance position on the surface of the base 30 is at least a lens positioning hole. (Lens cavity) 301. The optical lens 32 is fitted into the range fixing hole 301 by the range positioning column 322 and fixed on the pedestal 30. With this structure, the optical lens 32 moves or rotates on the pedestal 30, and the package structure 3 can reduce the risk of movement or rotation of the optical lens 32 due to shaking or vibration due to external force.

FIG. 6 is an exploded view of the appearance of a light emitting diode package structure embodiment 3 according to the present invention. As shown in the drawing, the package structure 4 is different from the package structure 2 in that the optical lens 42 provided in the package structure 4 is formed by plastic injection molding, and has at least a lens alignment 423. The lens arrangement 423 is molded from a plastic injection mold and is molded integrally with the optical lens 42. In addition, the inner wall surface 234 of the lens holder 43 opening is provided with at least one holder alignment 439. When the lens holder 43 is mounted on the pedestal 20, the lens holder 43 is coupled to the lens arrangement 423 by the holder arrangement 439 to fix the optical lens 42. With this structure, the optical lens 42 is mounted and fixed on the pedestal 20, and the package structure 4 can reduce the risk of movement or rotation of the optical lens 42 due to shaking or vibration due to external force.

The lens positioning hole, the lens positioning column, and the lens arrangement can be used in combination as necessary, and are not limited to the above-described embodiments. As an example, the optical lens is provided with a lens positioning column and a lens alignment at the same time, or the lens holder and the pedestal are provided with a holder alignment and a lens positioning hole at the same time to achieve better and more robust attachment and positioning.

FIG. 7 is an exploded view of the appearance of a light emitting diode package structure embodiment 4 according to the present invention. As shown in the drawing, the difference between the package structure 5 and the package structure of the above embodiment is that the pedestal 50 and the lens holder 53 provided in the package structure 5 have a circular appearance, and are prepared for various applications. In the present embodiment, the optical lens 22 is placed on a molding die after a glass preform or glass member close to a molded product is placed on the molding die by a glass precision mold molding technique. casting). If used for white LEDs, the optical lens 22 made by the phosphor powder mixed glass surface (PIGS) manufacturing technology can change the wavelength of the LED's emission light source by mixing fluorescent powder into the surface layer of the lens. Can be converted to white light. In the present embodiment, since the holder positioning hole 201 is provided on the surface of the circular pedestal 50 and the storage groove 202 is provided on the side surface, the lens holder 53 is also provided with the holder positioning column 232 and the wedge 233. 53 is engaged with the storage groove 202 by the wedge 233 and mounted on the pedestal 50, and then fitted into the holder positioning hole 201 by the holder positioning column 232 and attached to the pedestal 50. Accordingly, the lens holder 53 is not limited to the pedestal and the lens holder external shape, and the optical lens 22 can be mounted on the pedestal 50 independently. The structure of the present invention is simple, and the lens holder 53 can be attached and fixed to the rigid optical lens 22 made of glass. The circular LED thus produced can be easily applied to a lamp or a car interior light.

The above is a description of the preferred embodiment of the present invention. These illustrate the invention and do not impose any restrictions. Those skilled in the art can change, modify, or change the effect according to the claims of the present invention. Therefore, alterations, modifications, and equivalent changes according to the claims of the present invention shall be included in the claims of the present invention.

It is a side view of the light emitting diode package structure of a well-known technique. It is the schematic of the light emitting diode of a pentagonal light pattern. 1 is an exploded view of an appearance of a first embodiment of a light emitting diode package structure according to the present invention. 1 is a side view of a light emitting diode package structure embodiment 1 according to the present invention; FIG. 6 is an exploded view of a light emitting diode package structure embodiment 2 according to the present invention. FIG. 7 is an exploded view of the appearance of a light emitting diode package structure embodiment 3 according to the present invention. FIG. 7 is an exploded view of an external appearance of a light emitting diode package structure embodiment 4 according to the present invention.

Explanation of symbols

1, 2, 3, 4, 5 Light emitting diode package structure 10, 20, 30, 50 Pedestal 101 Through hole 11, 21 Light emitting diode die 12, 22, 32, 42 Optical lens 13, 23, 43, 53 Lens holder 131 Support Column 19 Exposed portion of through hole of support column 201 Holder positioning hole 202 Storage groove 231 Opening 232 Holder positioning column 233 Wedge 234 Opening inner wall surface 301 Lens positioning hole 322 Lens positioning column 423 Lens alignment 439 Holder alignment

Claims (7)

A pedestal,
A light emitting diode die mounted on a pedestal and generating a light source;
An optical lens that covers the light emitting diode die and collects light sources emitted from the light emitting diode die to generate a necessary light pattern;
An aperture, at least a lens holder including a holder positioning column and a wedge, and
The pedestal has at least one holder positioning hole on one surface of the pedestal, and at least one storage groove on one side of the pedestal;
The optical lens is provided between the lens holder and the pedestal and passes through an opening.The lens holder is fixed to the pedestal by a wedge by being hooked in the storage groove, and is fitted into the holder positioning hole by the holder positioning column. A light emitting diode package structure including a lens holder to be attached. The optical lens further includes a lens positioning column, and the surface of the pedestal is provided with a lens positioning hole, and the optical lens is fitted into the lens positioning hole by the lens positioning column and mounted on the pedestal. The light emitting diode package structure according to claim 1. The optical lens further includes a lens alignment, and the surface of the inner wall of the lens holder includes at least a holder alignment. After the lens holder is mounted on the pedestal, the lens holder is the holder alignment. 2. The light emitting diode package structure according to claim 1, wherein the optical lens is fixed by coupling the two. 2. The light emitting diode package structure according to claim 1, wherein a surface of the inner wall of the lens holder includes a reflective layer. 2. The light emitting diode package structure according to claim 1, wherein the optical lens is a lens that emits a predetermined light pattern using a glass member or a plastic member. 5. The light emitting diode package structure according to claim 4, wherein the reflection layer provided in the lens holder is a film layer formed by electroplating of aluminum or silver. 5. The light emitting diode package structure according to claim 4, wherein the reflective layer provided in the lens holder is a film layer formed by a light reflecting material coating process of an aluminum base or a silver base.

Images