CN217847950U - LED lamp bead and LED lamp strip - Google Patents

Abstract

The utility model discloses a LED lamp pearl and LED lamp area, include: an LED support having at least 2 electrodes including a first electrode and a second electrode; the LED chip is positioned in the LED bracket and is electrically connected with the first electrode; the resistor is arranged in the LED bracket and is electrically connected with the second electrode; the light blocking body is arranged between the LED chip and the resistor and used for blocking part or all light rays from irradiating the resistor; one end of the first welding wire is electrically connected with the LED chip, and the other end of the first welding wire crosses the light blocking body and then is electrically connected with the resistor, so that the serial connection and conduction of the LED chip and the resistor are realized; and the LED chip, the resistor, the first bonding wire and the light blocking body are encapsulated in the LED support by the packaging adhesive. The traditional structure that LED lamp pearl and resistance set up independently has been abandoned, has improved the aesthetic property in LED lamp area, has improved the luminous efficacy and the life of LED lamp pearl, has improved the competitiveness of enterprise.

Description

LED lamp bead and LED lamp strip

Technical Field

The utility model relates to a LED field, concretely relates to LED lamp pearl and LED lamp area.

Background

The LED lamp strip is characterized in that an LED lamp bead is assembled on an FPC (flexible printed circuit) or a PCB (printed circuit board) hard board, and the product is named as a strip. The LED lamp belt has long service life, is very energy-saving and environment-friendly, and is widely applied to industries such as decoration and the like.

The LED lamp strip generally adopts 5V-220V voltage, and because of the electrical relation of voltage and current, a resistor is required to be arranged on the LED lamp strip to share the voltage, so that the voltage and the current on the LED chip are more stable, the current on the LED chip is limited, and the effect of protecting the LED chip is achieved. The resistance in traditional LED lamp area is all external, LED lamp pearl and resistance set up side by side on the circuit board, visible obvious resistance in LED lamp area, the external pleasing to the eye in LED lamp area that has influenced of resistance, a large amount of spaces have also been occupied simultaneously, make the quantity of LED lamp pearl limited on unit length, perhaps set up LED lamp pearl of equal quantity and need be longer with LED lamp area is done, and is large in size and weight, great increase the circuit board, the use of parts such as conductive copper line, the manufacturing and the use cost in LED lamp area are higher relatively.

For this reason, there is a need for optimization and improvement of existing LED lamp beads and LED strips.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a LED lamp pearl and LED lamp area has improved LED lamp pearl's light-emitting efficiency and life, and the LED lamp area product of preparation from this is small, light in weight, pleasing to the eye degree good, with low costs, production efficiency height.

In a first aspect, an embodiment of the present invention provides a LED lamp bead, include:

an LED support having at least 2 electrodes, including a first electrode and a second electrode;

the LED chip is positioned in the LED bracket and is electrically connected with the first electrode;

the resistor is arranged in the LED bracket and is electrically connected with the second electrode;

the light blocking body is arranged between the LED chip and the resistor and used for blocking part or all light rays from irradiating the resistor;

the first welding wire stretches across the light blocking body, and two ends of the first welding wire are respectively electrically connected with the LED chip and the resistor to realize the serial conduction of the LED chip and the resistor;

and the LED chip, the resistor, the first bonding wire and the light blocking body are encapsulated in the LED support by the encapsulation glue.

According to the utility model discloses LED lamp pearl of first aspect embodiment has following beneficial effect at least:

(1) the resistor is arranged in the LED support and is connected with the LED chip in series through the first welding wire, so that the LED lamp strip manufactured by the LED lamp beads does not have exposed resistor any more, the attractiveness of the LED lamp strip is improved, more LED lamp beads can be arranged in the unit length of the LED lamp strip, and the problem of uneven light emission caused by the existence of the resistor of the adjacent LED lamp beads is solved; on the basis of arranging the same quantity of the LED lamp beads, the required length of the LED lamp strip is shorter, the use of parts such as a circuit board, a conductive copper wire and the like is reduced, the production and use cost is effectively reduced, the volume of the LED lamp strip is smaller, the weight is lighter, when the LED lamp strip is manufactured, a resistor does not need to be attached to the LED lamp strip any more, the production process of the LED lamp strip is simplified, and the production efficiency of the LED lamp strip is greatly improved;

(2) the light blocking body is arranged between the LED chip and the resistor and is used for blocking part or all light rays from irradiating the resistor, and the problem of photo-thermal conduction caused by mutual approach of the resistor and the LED chip when the resistor is arranged in the LED support is considered; on the other hand, because place the LED support in the resistance in and encapsulate for the packaging adhesive, the heat that the resistance produced can't be dispelled, the heat separation that the body that is in the light distributed the resistance during operation is regional at the resistance, reduce the work area that the heat entered into the LED chip, thereby make the LED chip be in a temperature relatively lower operational environment, be favorable to improving the life of LED chip, simple manufacturing process, the manufacturing cost in LED lamp pearl and LED lamp area has been reduced, the light-emitting efficiency and the life of LED lamp pearl have been improved, also accord with the miniaturized design trend of LED lamp pearl simultaneously, fine satisfied the consumer to the aesthetic property in LED lamp area, demand such as miniaturization, the competitiveness of enterprise is improved.

In some embodiments of the first aspect of the present invention, the height of the light blocking body is greater than or equal to the height of the LED chip.

In some embodiments of the first aspect of the present invention, the light-blocking body is disposed on the electrode; or the light blocking body is arranged on the bracket insulator between the electrodes; or the light blocking body is arranged on the electrode and a bracket insulator between the electrodes.

In some embodiments of the first aspect of the present invention, the light blocking body is dam glue adhered to the LED support; or the light blocking body is a bracket insulator integrally formed with the LED bracket.

In some embodiments of the first aspect of the present invention, the light blocking body is a small-top and large-bottom structure.

In some embodiments of the first aspect of the present invention, the number of the electrodes in the LED support is 2, and the LED support is composed of the first electrode and the second electrode; the resistor is provided with two conductive terminals, wherein the first conductive terminal is insulated from the electrode, the first conductive terminal is electrically connected with the LED chip through the first welding wire, and the second conductive terminal is fixed on the second electrode through a conductive medium and is electrically connected with the second electrode, so that the series connection and conduction of the resistor and the LED chip are realized.

In some embodiments of the first aspect, the first conductive terminal overlaps the first electrode, and the first electrode is fixedly connected to the first conductive terminal through an insulating adhesive.

In some embodiments of the first aspect, the first conductive terminal overlaps the second electrode, and the second electrode is fixedly connected to the first conductive terminal through an insulating adhesive.

In some embodiments of the first aspect of the present invention, the first conductive terminal extends beyond the second electrode to form a cantilever end.

In some embodiments of the first aspect of the present invention, the bottom of the cantilever end is provided with an insulating glue, and the insulating glue is located on the support insulator between the first electrode and the second electrode to fix the support of the cantilever end.

In some embodiments of the first aspect of the present invention, the conductive medium is conductive paste or tin alloy.

In some embodiments of the first aspect, the LED chip is fixed to the first electrode through conductive paste or tin alloy, so as to electrically connect the LED chip to the first electrode.

The utility model discloses in some embodiments of first aspect, the LED chip passes through solid crystal glue bonding to be fixed on the first electrode, the LED chip pass through the second bonding wire with first electrode electric connection.

The utility model discloses in some embodiments of first aspect, the electrode in the LED support is 3, by the third electrode with first electrode, second electrode constitute, resistance has two conductive terminal, and wherein first conductive terminal overlap joint is fixed on the third electrode, first conductive terminal passes through first bonding wire with LED chip electricity is connected, and second conductive terminal passes through conducting medium to be fixed on the second electrode, and with second electrode electricity is connected, realizes that the series connection of resistance and LED chip switches on.

In a second aspect, an embodiment of the present invention provides a LED lamp strip, including a circuit board and the LED lamp bead of any one of the above first aspect embodiments, the LED lamp bead is fixed on the circuit board and conducted with the circuit board.

According to the utility model discloses LED lamp area of second aspect embodiment has following beneficial effect at least:

(1) the resistor is arranged in the LED support and is electrically connected with the second electrode, the resistor is connected with the LED chip in series through the first welding wire and conducted, the LED lamp strip does not have an exposed resistor any more, the attractiveness of the LED lamp strip is improved, more LED lamp beads can be arranged in the unit length of the LED lamp strip, and the problem of uneven light emission caused by the existence of the resistor of the adjacent LED lamp beads is solved; on the basis of arranging the same quantity of the LED lamp beads, the required length of the LED lamp strip is shorter, the use of parts such as a circuit board and a conductive copper wire is reduced, the production and use cost is effectively reduced, the volume of the LED lamp strip is smaller, the weight is lighter, when the LED lamp strip is manufactured, a resistor does not need to be attached to the LED lamp strip any more, the production process of the LED lamp strip is simplified, and the production efficiency of the LED lamp strip is greatly improved;

(2) the light blocking body is arranged between the LED chip and the resistor and is used for blocking part or all light rays from irradiating the resistor, and the problem of photo-thermal conduction caused by mutual approach of the resistor and the LED chip when the resistor is arranged in the LED support is considered; on the other hand, because place the LED support in the resistance and encapsulate for the packaging adhesive, the heat that the resistance produced can't be scattered away, the heat separation that the body that utilizes to be in the light gives off the resistance during operation is regional at the resistance, reduce the work area that the heat enters into the LED chip, thereby make the LED chip be in a relatively lower operational environment, be favorable to improving the life of LED chip, simple manufacture process, the manufacturing cost in LED lamp pearl and LED lamp area has been reduced, the light-emitting efficiency and the life of LED lamp pearl have been improved, also accord with the miniaturized design trend of LED lamp pearl simultaneously, fine satisfied the consumer to the aesthetic property in LED lamp area, demand such as miniaturization, improve the competitiveness of enterprise.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an LED support according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a resistor according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structure of some embodiments of the present invention;

fig. 4 is a schematic cross-sectional view of other embodiments of the present invention;

fig. 5 is a schematic cross-sectional view of another embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of other embodiments of the present invention;

fig. 7 is a schematic cross-sectional view of other embodiments of the present invention;

fig. 8 is a schematic cross-sectional view of other embodiments of the present invention;

fig. 9 is a schematic cross-sectional view of other embodiments of the present invention;

fig. 10 is a schematic structural diagram of an LED lamp strip according to an embodiment of the present invention.

Reference numerals:

an LED support 100, a first electrode 101, a second electrode 102, a first solder foot 103, a second solder foot 104 and a third electrode 105;

an LED chip 200;

a conductive paste 300;

die attach adhesive 400;

a second bonding wire 500;

a resistor 600, a first conductive terminal 601, a second conductive terminal 602;

a light blocking body 700;

packaging adhesive 800;

a first bonding wire 900;

a conductive medium 110;

an insulating paste 120;

a wiring board 130;

LED lamp bead 140.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the orientation or positional relationship indicated above, below, front, back, left, right, inside, outside, etc., is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly defined, words such as setting, installation, connection, assembly, and coordination should be understood in a broad sense, and those skilled in the art can reasonably determine the meaning of the above words in the present invention by combining the specific contents of the technical solution.

The following provides many different embodiments or examples for implementing the inventive arrangements.

The LED lamp strip is provided with an LED support, an LED chip is installed in the LED support, the LED chip is packaged in the LED support through packaging glue, a lamp strip manufacturer attaches LED lamp beads on a circuit board, in order to stabilize the voltage and the current of the LED lamp beads, resistors are attached between 2 or more adjacent LED lamp beads on the circuit board, on the traditional LED lamp strip, approximately half of the length space is occupied by the resistors, so that the number of the LED lamp beads on unit length is limited, in addition, due to the existence of the resistors, the interval between the adjacent LED lamp beads is increased, so that a bright area is formed at the position of the LED lamp beads in the whole LED lamp strip, a dark area is formed at the position of the resistors, the uniformity of the overall brightness of the LED lamp strip is influenced, and the decorative effect of the LED lamp strip is finally influenced; in order to cover the dark space of resistance position, partial LED lamp area is through the luminance that increases LED lamp pearl, and the LED lamp pearl that crosses bright makes the consumer dare not look at LED lamp pearl, also can produce certain harmful effects to consumer's eyesight simultaneously.

Therefore, through a large amount of research and experiments, the inventor invents the LED lamp bead with the resistor arranged on the outer side of the LED support, so that the resistor is integrated on the LED lamp bead, and the defect caused by the fact that the resistor is arranged independently of the LED lamp bead is overcome. The later inventor finds that the size of the LED support needs to be increased, and for the current relatively mature LED industry, the cost of the LED support is higher than that of an LED chip for a single LED lamp bead, so that the mold opening is needed again when the size of the LED support is increased, more raw materials of the LED support are needed, the manufacturing cost is increased, and the competitiveness of LED lamp bead manufacturers is weakened; in addition, because the resistor size is less, the solder joint of fixed resistor is little, makes the resistance lack the protection with the external side at the LED support of resistor, receives accident such as touching easily and leads to the resistance not hard up or drop.

Therefore, the inventor continuously researches and discovers that the resistor can be directly arranged in the LED bracket, so that the size of the LED bracket is reduced, the use of the existing LED bracket becomes possible, the manufacturing cost of the LED lamp bead is reduced, and the enterprise competitiveness is improved; however, the resistors are arranged in the LED support in the interior, so that the resistors and the LED chips are close to each other, light emitted by the LED chips is directly absorbed by the resistors, the luminous efficiency of the LED lamp beads is reduced, meanwhile, heat generated by the resistors during working is directly absorbed by the LED chips, the LED chips work in the environment with relatively high temperature, and the service life of the LED chips is influenced.

Based on this, the embodiment of the first aspect of the present invention provides an LED lamp bead, including an LED support 100, as shown in fig. 1, the LED support 100 includes a support insulator and electrodes made of metal material, the support insulator is made of resin material to form support resin, the support resin and the electrodes are formed by injection molding and embedding, the LED support 100 has at least 2 electrodes, the electrodes may be only 2, or 3 or more, the LED support includes a first electrode 101 and a second electrode 102, the first electrode 101 and the second electrode 102 are respectively electrically connected with 2 solder feet on the LED support 100, in some embodiments, the first electrode 101 and the first solder foot 103 are integrally formed, the second electrode 102 and the second solder foot 104 are integrally formed, when the LED support 100 is manufactured, a copper strip with a thickness of 0.2mm is prepared to be punched into a circuit blank through a special mold, and then silver is plated, the PPA material is injected onto the copper strip to manufacture a complete LED support 100, wherein the copper strip forms the first electrode 101, the first solder foot 103, the second electrode 102, and the second solder foot 104. It is understood that the electrode and the solder leg may be separately disposed, and the electrode and the solder leg are electrically connected through the via hole or the via half hole. The first leg 103 is connected to the positive electrode of the circuit board by soldering, and the second leg 104 is connected to the negative electrode of the circuit board by soldering.

And an LED chip 200 disposed in the LED support 100 and electrically connected to the first electrode 101, wherein the LED chip 200 may be a red chip (R chip), a blue chip (B chip), or a green chip (G chip) to emit red light, blue light, or green light, respectively. In order to realize the electrical connection between the LED chip 200 and the first electrode 101, according to the structure of the LED chip 200, in some embodiments, as shown in fig. 8 or 9, the LED chip 200 is fixed on the first electrode 101 through the conductive adhesive 300 to realize the electrical connection with the first electrode 101, the conductive adhesive 300 plays a role of electrical connection, and after the conductive adhesive 300 is cooled and solidified, the LED chip is also fixed on the first electrode 101, the manufacturing process is simple, and the connection is reliable and firm, for the LED chip 200 connected in this way, one conductive point on the LED chip 200 is disposed on the light emitting surface of the chip, and the other conductive point is disposed on the opposite surface of the light emitting surface, taking fig. 8 as an example, the light emitting surface of the LED chip 200 is disposed on the upper surface, and the conductive point connected with the conductive adhesive 300 is disposed on the lower surface, so that the LED chip 200 can be easily electrically connected with the first electrode 101 by using the conductive adhesive 300; in other embodiments, tin or a tin alloy may also be used to solder the LED chip 200 to the first electrode 101 and simultaneously achieve electrical connection. In some embodiments, as shown in fig. 3-7, the LED chip 200 is adhered and fixed on the first electrode 101 by the die attach adhesive 400, the die attach adhesive 400 is generally made of an insulating adhesive and has better adhesion, the LED chip 200 is electrically connected to the first electrode 101 by the second bonding wire 500, and for the LED chip 200 connected in this way, 2 conductive points on the LED chip 200 and the light emitting surface are located on the same plane. It can be understood that, no matter whether the conductive point on the LED chip and the light emitting surface are located on the same plane, the electrical connection with the first electrode 101 can be achieved by using the die attach adhesive + the second bonding wire, or the electrical connection can be achieved by using the conductive adhesive, which is not an obstacle in technical implementation.

And the resistor 600 is arranged in the LED support 100 and is electrically connected with the second electrode 102.

The light blocking body 700 is disposed between the LED chip 200 and the resistor 600, and the light blocking body 700 is used to block part or all of light from irradiating the resistor 600, it can be understood that the light blocking body 700 may be a plate-shaped structure, a rib structure, or other structures, and the light blocking body 700 is white, and it can be understood that other colors may be selected.

The first bonding wire 900, the first bonding wire 900 has two ends, one end of which is electrically connected to the LED chip 200 after being soldered, and the other end of which is electrically connected to the resistor 600 after crossing over the light blocking body 700.

The LED chip 200, the resistor 600, the first bonding wire 900 and the light blocking body 700 are all arranged in a cup of the LED support 100, the LED chip 200, the resistor 600, the first bonding wire 900 and the light blocking body 700 are packaged in the cup of the LED support 100 through packaging glue 800, and the LED lamp bead can be dustproof and waterproof due to the packaging glue 800, so that abnormal phenomena such as short circuit of the resistor 600 and the LED chip 200 in the LED support 100 can be avoided, and the service life of the LED lamp bead can be prolonged; the packaging adhesive 800 also makes the light emitted by the LED chip 200 more uniform after being reflected and refracted by the packaging adhesive.

In the embodiment of the first aspect of the present invention, the resistor 600 is disposed in the LED bracket 100, and the resistor 600 is connected in series with the LED chip 200 through the first bonding wire 900 and conducted, so that the LED strip manufactured by the LED lamp beads no longer has an exposed resistor, the aesthetic property of the LED strip is improved, more LED lamp beads can be arranged in the LED strip per unit length, and the problem of uneven light emission caused by the existence of the resistor in adjacent LED lamp beads is solved; on the basis of arranging the same quantity of the LED lamp beads, the required length of the LED lamp strip is shorter, the use of parts such as a circuit board, a conductive copper wire and the like is reduced, the production and use cost is effectively reduced, the volume of the LED lamp strip is smaller, the weight is lighter, when the LED lamp strip is manufactured, a resistor does not need to be attached to the LED lamp strip any more, the production process of the LED lamp strip is simplified, and the production efficiency of the LED lamp strip is greatly improved; particularly, the light blocking body 700 is arranged between the LED chip 200 and the resistor 600, and the light blocking body 700 is used for blocking part or all of light rays from irradiating the resistor 600, so that the problem of photo-thermal conduction caused by the fact that the resistor 600 and the LED chip 200 are close to each other when the resistor 600 is arranged in the LED support 100 is considered, on one hand, the light blocking body 700 is used for blocking part or all of light rays from irradiating the resistor 600, so that the light rays emitted by the LED chip 200 can not or less be absorbed by the resistor 600, and the light emitting efficiency of the LED lamp bead is improved; on the other hand, because place LED support 100 in the resistance 600 and encapsulate for packaging adhesive 800, the heat that resistance 600 produced can't be dispelled, utilize the body 700 that is in the light to separate the heat that gives off resistance 600 during operation in resistance 600 place, reduce the heat and enter into LED chip 200's work area, thereby make LED chip 200 be in a relatively lower operational environment of temperature, be favorable to improving LED chip 200's life, simple manufacture process, the manufacturing cost in LED lamp pearl and LED lamp area has been reduced, the light-emitting efficiency and the life of LED lamp pearl have been improved, also accord with the miniaturized design trend of LED lamp pearl simultaneously, fine satisfied consumer to the aesthetic property in LED lamp area, demand such as miniaturization, improve the competitiveness of enterprise.

The utility model discloses some embodiments of first aspect, the height that highly is more than or equal to LED chip 200 of the body 700 that is in the light, see that fig. 3-9 are shown, if there is not the existence of the body 700 that is in the light or the height that highly is less than LED chip 200 of the body 700 that is in the light, the light that LED chip 200 sent is at least partly can direct irradiation on resistance 600 and absorbed by resistance 600, utilize the body 700 that is in the light higher or parallel and level setting for LED chip 200, can shoot LED chip 200 to the light of resistance 600 direction to the light separation as far as, the light that receives the separation shines behind the body 700 that is in the light through the reflection and at least part can follow the light emitting area of LED lamp pearl and shoot out, thereby be favorable to improving the light-extraction efficiency of LED lamp pearl.

In some embodiments of the first aspect of the present invention, as shown in fig. 3 to fig. 6, the light blocking body 700 is disposed on the first electrode 101, and the light blocking body 700 is dam adhesive adhered on the first electrode 101, so that light emitted from the LED chip 200 can be blocked as much as possible and not absorbed by the resistor 600, and the resistor 600 has a relatively large space to accommodate heat emitted during operation; in other embodiments, the light blocking body 700 is disposed on the support insulator between the first electrode 101 and the second electrode 102, and the light blocking body 700 is dam adhesive adhered on the support insulator; in other embodiments, the light blocking body 700 is a support insulator integrally formed with the LED support 100, that is, when the LED support 100 is manufactured, the light blocking body 700 is formed by a mold, as shown in fig. 7-8, the light blocking body 700 is made of the same resin material as the support insulator, so as to form light blocking resin, which has good light blocking and heat absorbing effects, and is beneficial to improving the light emitting efficiency of the LED lamp bead and prolonging the service life of the LED chip 200; it is understood that the light barrier 700 may also be disposed on both the electrodes and the mount insulator between the electrodes.

The utility model discloses in some embodiments of first aspect, the body 700 that is in the light is big structure from top to bottom, and as shown in fig. 3-9, the lateral wall that the body 700 that is in the light is close to LED chip 200 and resistance 600 is the inclined plane, thereby utilizes big structure from top to bottom easy light with the separation to reflect away, improves the light-emitting rate of LED lamp pearl for the light-emitting rate of LED lamp pearl does not receive or receives the built-in influence of resistance 600 less. It is understood that the light blocking body 700 may be provided as an inclined surface only at a sidewall near one side of the LED chip 200.

In some embodiments of the first aspect of the present invention, as shown in fig. 1, the number of the electrodes in the LED support 100 is only 2, and the LED support 100 is composed of the first electrode 101 and the second electrode 102, that is, the LED support 100 may be the most general LED support in the market with the largest occupation; as shown in fig. 2, the resistor 600 has two conductive terminals to form the positive and negative electrodes of the resistor 600, including a first conductive terminal 601 and a second conductive terminal 602, see fig. 3-8, where the first conductive terminal 601 is insulated from the electrode of the LED support 1, and a specific insulation structure is developed in detail later on, and the first conductive terminal 601 is electrically connected to the LED chip 200 through a first bonding wire 900, and the second conductive terminal 602 is fixed on the second electrode 102 through a conductive medium 110 and is electrically connected to the second electrode 102, in some embodiments, the conductive medium 110 is a conductive adhesive, and in other embodiments, the conductive medium 110 is tin or a tin alloy, it is understood that the conductive medium 110 may also be other technologies or materials not mentioned herein, so as to implement the series connection between the resistor 600 and the LED chip 200, and the resistor 600 can divide the voltage of the LED chip 200, thereby protecting the LED chip 200. Through setting up resistance 600 in LED support 100, a conductive terminal of resistance 600 is insulating with LED support 100's electrode, and be connected with LED chip 200 electricity through first bonding wire 900, another conductive terminal passes through conducting medium 110 to be fixed on second electrode 102, and be connected with second electrode 102 electricity, only have the LED support of 2 electrodes in can using current single-chip LED lamp pearl, consequently, need not redesign LED support, simple manufacture process, be favorable to reducing the manufacturing cost in LED lamp pearl and LED lamp area, improve the competitiveness of enterprise, also accord with the miniaturized design trend of LED lamp pearl simultaneously, fine satisfied the consumer to the aesthetic property in LED lamp area, demands such as miniaturization.

In some embodiments of the first aspect of the present invention, referring to fig. 3, the first conductive terminal 601 connected to the first bonding wire 900 is lapped on the first electrode 101, and the first electrode 101 and the first conductive terminal 601 are fixedly connected through the insulating adhesive 120. Although the two conductive terminals of the resistor 600 are respectively located on the first electrode 101 and the second electrode 102, the insulating glue 120 is arranged between the first conductive terminal 601 of the resistor 600 and the first electrode 101 at an interval, so that the first conductive terminal 601 and the first electrode 101 are not directly conducted, and the short circuit phenomenon caused by the current bypassing the LED chip 200 is avoided.

In some embodiments of the first aspect of the present invention, referring to fig. 4, 7 and 8, the first conductive terminal 601 connected to the first bonding wire 900 is overlapped on the second electrode 102, and the second electrode 102 and the first conductive terminal 601 are fixedly connected through the insulating adhesive 120. Although the two conductive terminals of the resistor 600 are both located on the second electrode 102, the insulating glue 120 is spaced between the first conductive terminal 601 and the second electrode 102 of the resistor 600, so that the first conductive terminal 601 and the second electrode 102 are not directly conducted, and the short circuit phenomenon caused by the current bypassing the resistor 600 is avoided.

In some embodiments of the first aspect of the present invention, referring to fig. 5 and 6, the first conductive terminal 601 connected to the first bonding wire 900 extends out of the second electrode 102 to form a cantilever end, and this structure ingeniously utilizes the structure of the cantilever end to avoid the direct electrical connection between the first conductive terminal 601 and the first electrode 101 or the second electrode 102, so as to only conduct the LED chip 200 and the resistor 600 by guiding the current, thereby skillfully realizing the series connection between the LED chip 200 and the resistor 600, and avoiding the occurrence of the short circuit phenomenon.

The utility model discloses in some embodiments of first aspect, see fig. 6 and show, the bottom of cantilever end is provided with insulating cement 120, insulating cement 120 is located the support insulator between first electrode 101 and second electrode 102, it is fixed to realize the support of cantilever end, utilize insulating cement 120 to support the cantilever end, improve the fastness of resistance 600 installation, avoid taking place to loosen and take off or rotate, and insulating cement 120 sets up on the support insulator between first electrode 101 and second electrode 102, the first conductive terminal 601 that has isolated resistance 600 switches on with the directness of first electrode 101 or second electrode 102, the support to resistance 600 has been realized promptly, the insulation to the first conductive terminal 601 of resistance 600 has been realized again, and the design is ingenious, and the structure is compact.

In some embodiments of the first aspect of the present invention, referring to fig. 9, the number of the electrodes in the LED support 100 is 3, and the LED support is composed of a first electrode 101, a second electrode 102, and a third electrode 105, wherein the resistor 600 has two conductive terminals, the first conductive terminal 601 is overlapped on the third electrode 105 and fixed on the third electrode 105 through insulating glue, die attach glue, or solder paste, etc., the first conductive terminal 601 is electrically connected to the LED chip 200 through a first bonding wire 900, the second conductive terminal 602 is fixed on the second electrode 102 through a conductive medium 110, and the conductive medium may be the above-mentioned conductive glue, solder paste, or solder alloy, etc.; the third electrode 105 is added to support and fix the first conductive terminal 601 of the resistor 600, so that the resistor 600 is mounted in the LED bracket 100, and the resistor 600 and the LED chip 200 are connected in series; it can be understood that the LED chip 200 and the first electrode 101, the third electrode 105, and the resistor 600 and the second electrode 102, the third electrode 105 may also be electrically connected by bonding wires, and are fixed by bonding with an insulating adhesive; referring to fig. 9, the light blocking body 700 is disposed on the third electrode 105; it is understood that the light blocking body 700 may also be disposed on the first electrode 101.

The embodiment of the second aspect of the present invention provides a LED light strip, see fig. 10, including circuit board 130, and LED lamp bead 140 of any of the embodiments of the first aspect described above, LED lamp bead 140 is fixed on circuit board 130, and is conducted with circuit board 130, and LED lamp bead 140 is connected and fixed on circuit board 140 through first leg 103 and second leg 104 on LED support 100, and is conducted through.

In the embodiment of the second aspect of the present invention, the resistor 600 is disposed in the LED support 100, and the resistor 600 is connected in series with the LED chip 200 through the first bonding wire 900 and conducted, so that the LED lamp strip no longer has an exposed resistor, the aesthetic property of the LED lamp strip is improved, more LED lamp beads can be arranged in the unit length of the LED lamp strip, and the problem of uneven light emission caused by the existence of the resistor in the adjacent LED lamp beads is solved; on the basis of arranging the same quantity of the LED lamp beads, the required length of the LED lamp strip is shorter, the use of parts such as a circuit board and a conductive copper wire is reduced, the production and use cost is effectively reduced, the volume of the LED lamp strip is smaller, the weight is lighter, when the LED lamp strip is manufactured, a resistor does not need to be attached to the LED lamp strip any more, the production process of the LED lamp strip is simplified, and the production efficiency of the LED lamp strip is greatly improved; particularly, the light blocking body 700 is arranged between the LED chip 200 and the resistor 600, and the light blocking body 700 is used for blocking part or all of light rays from irradiating the resistor 600, so that the problem of photo-thermal conduction caused by the fact that the resistor 600 and the LED chip 200 are close to each other when the resistor 600 is arranged in the LED support 100 is considered, on one hand, the light blocking body 700 is used for blocking part or all of light rays from irradiating the resistor 600, so that the light rays emitted by the LED chip 200 can not or less be absorbed by the resistor 600, and the light emitting efficiency of the LED lamp bead is improved; on the other hand, because place LED support 100 in the resistance 600 and encapsulate for packaging adhesive 800, the heat that resistance 600 produced can't be dispelled, utilize the body 700 that is in the light to separate the heat that gives off resistance 600 during operation in resistance 600 place, reduce the heat and enter into LED chip 200's work area, thereby make LED chip 200 be in a relatively lower operational environment, be favorable to improving LED chip 200's life, simple manufacture process, the manufacturing cost in LED lamp pearl and LED lamp area has been reduced, the light-emitting efficiency and the life of LED lamp pearl have been improved, improve the competitiveness of enterprise, also accord with the miniaturized design trend of LED lamp pearl simultaneously, fine satisfied consumer to the aesthetic property in LED lamp area, demand such as miniaturization.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (15)

1. The utility model provides a LED lamp pearl which characterized in that includes:

an LED support having at least 2 electrodes including a first electrode and a second electrode;

the LED chip is positioned in the LED bracket and is electrically connected with the first electrode;

the resistor is arranged in the LED bracket and is electrically connected with the second electrode;

the light blocking body is arranged between the LED chip and the resistor and used for blocking part or all light rays from irradiating the resistor;

one end of the first welding wire is electrically connected with the LED chip, and the other end of the first welding wire crosses the light blocking body and then is electrically connected with the resistor, so that the LED chip is connected with the resistor in series;

and the LED chip, the resistor, the first welding wire and the light blocking body are encapsulated in the LED bracket by the encapsulation glue.

2. The LED lamp bead according to claim 1, characterized in that: the height of the light blocking body is larger than or equal to that of the LED chip.

3. The LED lamp bead according to claim 1, characterized in that: the light blocking body is arranged on the electrode; or the light blocking body is arranged on the bracket insulator between the electrodes; or the light blocking body is arranged on the electrode and a bracket insulator between the electrodes.

4. The LED lamp bead according to claim 3, characterized in that: the light blocking body is dam adhesive adhered to the LED support; or the light blocking body is a bracket insulator integrally formed with the LED bracket.

5. The LED lamp bead according to claim 1, wherein: the light blocking body is of a structure with a small upper part and a big lower part.

6. The LED lamp bead according to any one of claims 1-5, wherein: the number of the electrodes in the LED bracket is 2, and the electrodes consist of the first electrode and the second electrode; the resistor is provided with two conductive terminals, wherein a first conductive terminal is insulated from the electrode, the first conductive terminal is electrically connected with the LED chip through the first bonding wire, and a second conductive terminal is fixed on the second electrode through a conductive medium and is electrically connected with the second electrode, so that the series connection and conduction of the resistor and the LED chip are realized.

7. The LED lamp bead according to claim 6, characterized in that: the first conductive terminal is lapped on the first electrode, and the first electrode is fixedly connected with the first conductive terminal through an insulating glue.

8. The LED lamp bead according to claim 6, characterized in that: the first conductive terminal is lapped on the second electrode, and the second electrode is fixedly connected with the first conductive terminal through an insulating glue.

9. The LED lamp bead according to claim 6, characterized in that: the first conductive terminal extends out of the second electrode to form a cantilever end.

10. The LED lamp bead according to claim 9, wherein: and the bottom of the cantilever end is provided with an insulating glue which is positioned on the bracket insulator between the first electrode and the second electrode, so that the cantilever end is supported and fixed.

11. The LED lamp bead according to claim 6, wherein: the conductive medium is conductive adhesive or tin alloy.

12. The LED lamp bead according to claim 1, wherein: the LED chip is fixed on the first electrode through conductive adhesive or tin alloy, and the LED chip is electrically connected with the first electrode.

13. The LED lamp bead according to claim 1, characterized in that: the LED chip is fixedly bonded on the first electrode through solid crystal glue, and the LED chip is electrically connected with the first electrode through a second bonding wire.

14. The LED lamp bead according to any one of claims 1-5, wherein: the number of the electrodes in the LED support is 3, the LED support is composed of a third electrode, a first electrode and a second electrode, the resistor is provided with two conductive terminals, the first conductive terminal is fixed on the third electrode in a lap joint mode and is electrically connected with the LED chip through the first welding wire, and the second conductive terminal is fixed on the second electrode through a conductive medium and is electrically connected with the second electrode, so that series connection and conduction of the resistor and the LED chip are achieved.

15. A LED lamp area which characterized in that: the LED lamp bead comprises a circuit board and the LED lamp bead of any one of claims 1-14, wherein the LED lamp bead is fixed on the circuit board and is conducted with the circuit board.

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