WO2017152886A1

WO2017152886A1 - Led lamp, and integrated light source and lens structure having selectable colour temperature composed thereof

Info

Publication number: WO2017152886A1
Application number: PCT/CN2017/083188
Authority: WO
Inventors: 朱衡
Original assignee: 湖南粤港模科实业有限公司
Priority date: 2016-03-07
Filing date: 2017-05-05
Publication date: 2017-09-14

Abstract

An LED lamp, and an integrated light source and lens structure having selectable colour temperature composed thereof. The LED lamp comprises a lamp bead (13), a replaceable plastic fluorescent lens is arranged on the light emission direction of the lamp bead (13), and the plastic fluorescent lens is made by evenly mixing a fluorescent powder and a plastic into a single body via an injection moulding process. The integrated light source and lens structure having selectable colour temperature composed of the LED lamp has advantages such as being attractive in appearance, simple in structure and easy to plug in, saving space, and having a high light source efficiency and good heat dissipation performance.

Description

LED lamp and its integrated color temperature optional lens and lens structure

Technical field

The invention relates to an integrated light source and lens structure for an LED lamp and a color temperature thereof.

Background technique

The current LED remote phosphor process separates the phosphor from the chip dispensing package, which can avoid the high-temperature performance failure of the phosphor, and can also improve the light-emitting efficiency of the chip. The fluorescent mask can be replaced at will, and the color temperature can be adjusted variably. However, due to the high price of the phosphor, the use of a large-area lens housing and phosphor injection molding is costly.

At the same time, with the development of science and technology, LED solid-state lighting sources are increasingly used, and more and more as lighting sources. The current LED lighting device is usually composed of a heat sink, an aluminum substrate, a lamp bead, a PC cover, and a power source, and its use has great limitations. First, the LED light source is directly soldered on the aluminum substrate, and the aluminum substrate is fixed on the lamp heat sink. On the other hand, the customer cannot repair the lamp and need to replace the light source and the power supply. Secondly, due to the structural limitation of the prior art LED lamp bead package, the heat dissipation performance is poor, and the light efficiency and power per unit area are low, which cannot meet the requirements of the LED device. In view of the above drawbacks, the prior art has designed a plug-in type LED lamp (CN201520217219U), but the LED lamp has poor adaptability and cannot adapt to various plug-and-pull types, and can only be of a specific type. In addition, its heat dissipation relies on LEDs. The heat-dissipating substrate and the reflective cup made of heat-dissipating metal or heat-conductive plastic have poor heat dissipation performance.

Summary of the invention

In order to improve the above problems, the present invention provides an integrated light source and lens structure for an LED lamp and its color temperature.

In order to achieve the above object, the technical solution adopted by the present invention is as follows:

An LED lamp, the LED lamp comprising a lamp bead, wherein the lamp bead is provided with a light emitting direction The plastic fluorescent lens is replaced by a phosphor and a plastic which are uniformly integrated by an injection molding process.

Further, the lamp bead comprises a chip light cup cavity, a light emitting chip is disposed on an inner surface of the chip light cup cavity, and the plastic fluorescent lens is disposed on a side of the light emitting chip opposite to an inner surface of the chip light emitting cup cavity .

Further, the plastic fluorescent lens is screwed into the chip light cup cavity through a ring.

Further, the center of the ring has a circular hole having the same diameter as the outer diameter of the cavity of the chip, and the plastic fluorescent lens is fixed on the upper part of the circular hole by an injection molding process, the circular hole The lower inner wall is a nut pattern, and the nut pattern is screwed to the external thread of the chip light cup cavity.

In addition, a transparent silicone resin is coated between the plastic fluorescent lens and the chip.

In addition, the LED lamp further includes a secondary light distribution lens, the secondary light distribution lens closely abuts with the plastic fluorescent lens, and the outer wall inner ring of the secondary light distribution lens and the lamp bead are fixed by screwing.

Further, the chip is connected to the positive and negative electrodes of the circuit and is packaged by dispensing; the chip light cup cavity is placed at the center of the upper surface of the lamp bead.

Still further, the plastic fluorescent lens is a Fresnel planar lens or a curved lens.

Further, the lamp bead is an integrated lamp bead.

As an option, the plastic fluorescent lens comprises a white light blue lens, a positive white light lens and a white light yellow lens, and the white light blue lens is formulated as: white light glue: fixative: white light blue light phosphor = 1:1 :0.07~0.09;

The formula of the white light lens is: white glue: fixative: positive white light phosphor = 1:1: 0.085 ~ 0.12;

The formula of the white light yellow lens is: white light water: B curing agent: white light yellow fluorescent powder = 1:1: 0.11 ~ 0.15.

The invention relates to an integrated light source and a lens structure which are composed of LED lamps, wherein the structure comprises a metal body, and the metal body is provided with a chip and a chip light cup cavity, and the chip light cup cavity is provided with a positive a negative electrode, the positive and negative pins corresponding to the positive and negative poles form a male plug directly to the bottom of the heat dissipation column through the injection molded part, and the male plug is connected to the external female plug to turn on the power; the upper part of the chip light cup cavity is provided a lens having an outer diameter conforming to the cavity of the chip, wherein the lens and the central circular hole of the metal piece are integrally connected by injection molding, and the cover is screwed onto the cavity of the chip, and the light emitted by the chip passes through the The lens is emitted to reach a transparent plastic lens, and is emitted through the plastic lens. The periphery of the plastic lens is set as a metal piece, and the plastic lens and the metal body are integrally integrated by injection molding or card insertion, and the plastic lens and the plastic lens The joint surface of the metal member is subjected to a reflective treatment, and the light refracted by the lens can be effectively reflected out. The bottom of the metal member is provided with a thread and a plastic gasket, and the gold A helical member secured together by a screw;

The lens is a replaceable plastic fluorescent lens, and the plastic fluorescent lens is prepared by uniformly mixing phosphor and plastic through an injection molding process.

Further, the male plug formed by the injection molded part is electrically conductive at its end, and the portion between the heat dissipating columns is insulated from the heat dissipating post; the male plug is arranged to protrude slightly from the heat dissipating post to facilitate plugging and unplugging with the female plug. connection.

Still further, the structure of the male plug can be configured to match the structure of any type of female plug as needed.

Further, the heat sink may be replaced by a heat dissipating fin or a heat dissipating fin of a regular or irregular structure.

In addition, the plastic fluorescent lens comprises a white light blue lens, a positive white light lens and a white light yellow lens. The formula of the white light blue lens is: white light glue: fixative: white light blue phosphor = 1:1: 0.07~ 0.09;

The formula of the positive white lens is: white glue: fixative: positive white light phosphor = 1:1: 0.085~ 0.12;

It is worth noting that the present invention proposes a new process structure design, removes the PCB and the chip holder, and removes the phosphor powder chip package, thereby greatly improving the heat dissipation efficiency, which can greatly reduce the cost, and solve the heat dissipation problem of the chip while making the remote fluorescence The powder process can be quickly used. The versatile solution solves the problem that the phosphor dispensing is not uniform enough to cause color temperature deviation, and the phosphor is heated and the thermal resistance is increased. At the same time, the light source is produced to form a standard blue light manufacturing, thereby improving the production efficiency of the product. You can choose the color temperature arbitrarily to eliminate the defective products. At the same time, the screw-on lens can be arbitrarily selected to form different angles of incidence. Further, different decorative lenses can be formed, bringing a new space to the luminaire design.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

The phosphor of the invention has a detachable structure, and the light emitted by the chip is emitted through the plastic fluorescent lens in the middle of the ring, and the phosphor therein is excited to emit the light of the desired color temperature chromatography, and the process structure is simple and reduced. The cost makes the remote phosphor process rapidly popular.

The integrated color light source and the lens structure of the color temperature of the invention have the advantages of beautiful appearance, simple structure, convenient insertion and removal, space saving, high light source efficiency and good heat dissipation performance.

DRAWINGS

Fig. 1 is a schematic view showing the structure of a first embodiment of the present invention.

2 is a plan view showing a plastic fluorescent lens in the first embodiment of the present invention as a curved lens.

Fig. 3 is a side view showing the plastic fluorescent lens of the present invention in the first embodiment as a curved lens.

4 is a plan view showing the plastic fluorescent lens of the present invention in the first embodiment as a Fresnel lens.

Fig. 5 is a side view showing the plastic fluorescent lens of the present invention in the first embodiment as a Fresnel lens.

Fig. 6 is an exploded perspective view showing the second embodiment of the present invention.

Fig. 7 is a partial enlarged view of the second embodiment of the present invention.

detailed description

The invention is further illustrated by the following figures and embodiments, which include, but are not limited to, the following examples.

Example 1

As shown in FIG. 1 , an LED lamp includes a lamp bead 13 having a chip light cup cavity 2 in a middle portion of the upper surface of the lamp bead, and a chip 12 is fixed on a metal surface of the chip light cup cavity. The chip is connected to the positive and negative poles of the circuit, and is packaged by dispensing. The wall of the cup cavity of the chip light-emitting cup cavity 2 is a circular plastic piece or a metal piece, and the inner wall of the chip light-emitting cup cavity 2 is inclined. The outer wall of the chip light-emitting cup cavity 2 is a right-angled thread.

The LED lamp further includes a detachable ring 14 which can be fixedly connected to the outer wall of the chip light cup cavity. The ring 14 is made of metal or non-transparent plastic material, and the center of the ring 14 is a circular hole. The diameter of the circular hole is the same as the outer diameter of the cavity of the chip, and a plastic fluorescent lens is mounted on the upper part of the circular hole. As shown in FIGS. 2 to 5, the plastic fluorescent lens is a Fresnel plane lens or other forms of lens. The plastic fluorescent lens is prepared by uniformly mixing phosphor and plastic through an injection molding process, and the plastic fluorescent lens and the ring are also fixed in the upper half of the circular hole by an injection molding process.

The lower plate portion of the ring is a nut pattern, and the nut pattern is screwed to the external thread of the cup cavity, so that the plastic fluorescent lens is in close contact with the chip light cup cavity 2, and the plastic fluorescent lens and the chip encapsulant are A layer of transparent silicone resin is coated between the layers to improve the light effect, and the plastic fluorescent lens and the chip light cup cavity 2 are seamlessly bonded, and the light emitted by the chip 12 is emitted through the plastic fluorescent lens in the middle of the ring 14 and is excited. The phosphor emits light that is required for color temperature chromatography.

The LED lamp further includes a secondary light distribution lens 15, and the secondary light distribution lens 15 may include any shape and illumination angle, and is closely connected with the lens of the center of the ring, and the outer wall of the secondary light distribution lens 15 The inner ring and the integrated lamp bead 13 are fixed by screwing.

Preferably, the plastic fluorescent lens comprises a white light blue lens, a positive white light lens and a white light yellow lens. The white light blue lens is formulated as: white glue: fixative: white light blue phosphor = 1:1 :0.07~0.09;

Example 2

As shown in FIG. 6 and FIG. 7 , an integrated light source and a lens structure with color temperature formed by LED lamps are a plug-in structure, and the metal body 1 has a chip 12 and a chip light cup cavity thereon. 2. There are positive and negative poles 10 in the cavity of the chip light-emitting cup. The positive and negative pins 3 corresponding to the positive and negative electrodes 10 form a male plug 9 through the injection molded part and directly reach the bottom of the heat-dissipating column, and are connected with the external female plug 8 to connect the power supply. The above metal body is the outer structure of the lamp bead in the first embodiment.

The upper part of the chip illuminating cup cavity has a lens, and the outer diameter is consistent with the cavity of the chip illuminating cup. The lens is a replaceable plastic fluorescent lens. The plastic fluorescent lens is prepared by uniformly mixing the phosphor and the plastic through an injection molding process. The middle circular hole of the lens 4 is formed by integral injection molding, and is screwed onto the cavity of the chip light-emitting cup. The light emitted by the chip is completely emitted through the lens 4, reaches the transparent plastic lens 6, and is emitted through the plastic lens.

The outer ring of the lens 6 is a metal member 7, which is integrally fixed with the metal member 7 by injection molding or card insertion, and the joint faces of the metal members 7 are subjected to reflection processing. The light refracted by the lens can be effectively emitted. The lens and the metal member together constitute a secondary light distribution lens (the same as the secondary light distribution lens of the first embodiment).

The bottom of the metal member 7 has a thread and a plastic gasket, and the metal body 1 is solid together by a spiral 11 way. It can conduct heat and waterproof to the metal body. The heat generated by the heat dissipation of the LED chip can be sufficiently dissipated through the metal piece 5, the metal piece 7, the metal body 6, and the heat dissipating post to ensure heat dissipation efficiency.

The male plug 9 formed by the injection molded part is electrically conductive at its end portion, and the portion between the heat dissipating columns is insulated from the heat dissipating post. In order to further improve the insulating effect, a material having electrical insulation and high heat dissipation efficiency can be used as the material of the heat dissipating column.

Wherein, the male plug 9 can be arranged to protrude slightly from the heat dissipating post so as to be electrically connected to the female plug, and the structure of the male plug 9 can be set to match the structure of any type of female plug as needed.

In addition, the heat dissipating post may be replaced by a heat dissipating fin or a heat dissipating fin of a regular or irregular structure.

The present invention can be preferably implemented in accordance with the above embodiments. It should be noted that, based on the above structural design, in order to solve the same technical problem, even if some substantial changes or retouchings are made on the present invention, the essence of the technical solution adopted is still the same as the present invention. Therefore, it should also be within the scope of the present invention.

Claims

An LED lamp, characterized in that: the LED lamp comprises a lamp bead, and a replaceable plastic fluorescent lens is arranged in a light-emitting direction of the lamp bead, and the plastic fluorescent lens is uniformly integrated by a phosphor and a plastic through an injection molding process. Made in one piece.
The LED lamp of claim 1 , wherein the lamp bead comprises a chip light cup cavity, an inner surface of the chip light cup cavity is provided with a light emitting chip, and the plastic fluorescent lens is disposed on the The light emitting chip is opposite to one side of the inner surface of the chip light cup cavity.
The LED lamp according to claim 2, wherein the plastic fluorescent lens is screwed into the chip light cup cavity through a ring.
The LED lamp according to claim 3, wherein the center of the ring has a circular hole having the same diameter as the outer diameter of the cavity of the chip, and the plastic fluorescent lens is processed by an injection molding process. The upper inner wall of the circular hole is a nut pattern, and the nut pattern is screwed to the external thread of the chip light cup cavity.
The LED lamp according to claim 4, wherein a transparent silicone resin is coated between the plastic fluorescent lens and the chip.
The LED lamp of claim 1 , wherein the LED lamp further comprises a secondary light distribution lens, the secondary light distribution lens is closely coupled to the plastic fluorescent lens, and the secondary The inner wall of the outer wall of the optical lens is fixed to the lamp bead by screwing.
The LED lamp of claim 1 , wherein the plastic fluorescent lens comprises a white light blue lens, a positive white light lens and a white light yellow lens, and the white light blue lens is formulated as: white glue: fixed Agent: white light blue phosphor = 1:1: 0.07 ~ 0.09;

The formula of the white light lens is: white glue: fixative: positive white light phosphor = 1:1: 0.085 ~ 0.12;

The formula of the white light yellow lens is: white light water: B curing agent: white light yellow fluorescent powder =1:1: 0.11 to 0.15.
An integrated light source and lens structure which is composed of an LED lamp and has a color temperature, wherein the structure comprises a metal body, and the metal body is provided with a chip and a chip light cup cavity, and the chip light cup cavity Positive and negative poles are disposed therein, and the positive and negative pins corresponding to the positive and negative poles form a male plug through the injection molded part to reach the bottom of the heat dissipation column, and the male plug is connected with the external female plug to turn on the power; the chip light cup The upper part of the cavity is provided with a lens whose outer diameter is consistent with the cavity of the chip, and the lens is integrated with the central hole of the metal piece by injection molding, and is screwed onto the cavity of the chip, and the light emitted by the chip All of the lens is ejected through the lens, and reaches a transparent plastic lens, which is ejected through the plastic lens. The periphery of the plastic lens is set as a metal piece, and the plastic lens and the metal body are integrally integrated by injection molding or card insertion. The combination of the plastic lens and the metal member is reflective, and the light refracted by the lens can be effectively reflected. The bottom of the metal member is provided with a thread and a plastic Gasket, and the metal body threadably secured together in a spiral manner;

The lens is a replaceable plastic fluorescent lens, and the plastic fluorescent lens is prepared by uniformly mixing phosphor and plastic through an injection molding process.
The integrated light source and lens structure of the color temperature formed by the LED lamp according to claim 8, wherein the male plug formed by the injection molded part is electrically conductive at its end portion between the heat dissipating columns. The portion is kept insulated from the heat dissipation column; the male plug is disposed to protrude slightly from the heat dissipation column to facilitate electrical connection with the female plug.
8 . The integrated light source and lens structure of the color temperature formed by the LED lamp according to claim 8 , wherein the plastic fluorescent lens comprises a white light blue lens, a white light lens and a white light yellow lens. The formula of the white light blue lens is: white glue: fixative: white light blue phosphor = 1:1: 0.07 ~ 0.09;

The formula of the positive white lens is: white glue: fixative: positive white light phosphor = 1:1: 0.085~ 0.12;

The formula of the white light yellow lens is: white light water: B curing agent: white light yellow fluorescent powder = 1:1: 0.11 ~ 0.15.