CN210372970U

CN210372970U - LED lamp string capable of emitting light on whole body

Info

Publication number: CN210372970U
Application number: CN201921460243.8U
Authority: CN
Inventors: 尹华平
Original assignee: Dongguan Huacaiwei Technology Co Ltd
Current assignee: Dongguan Huacaiwei Technology Co Ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-04-21
Anticipated expiration: 2029-09-03

Abstract

The utility model discloses a whole luminous LED lamp string, which comprises LED lamp beads and two wires connected with the LED lamp beads, wherein electrode gaps are formed on two sides of the LED lamp beads, the two wires respectively pass through the two electrode gaps to connect a plurality of LED lamp beads in parallel to form a lamp string, and the LED lamp beads are positioned and electrically connected by the clamping embedding of the electrode gaps and the wires; and a light guide insulator is arranged corresponding to each LED lamp bead, and the LED lamp beads and the wires of the electric connection parts of the electrode notches of the LED lamp beads are coated by the light guide insulators. The utility model overcomes the defects of insecure connection, complex process, poor brightness consistency and the like of the existing products. Electrode notches are formed in two sides of the LED lamp bead, wires for conducting electricity are embedded into the electrode notches on two sides of the LED lamp bead, therefore, the light emitting surface of the LED lamp bead is perpendicular to the plane where the two wires are located, light generated by the LED lamp bead is conducted to a light-conducting insulating wire after penetrating through a light-conducting insulator, and therefore the whole LED lamp string can emit light.

Description

LED lamp string capable of emitting light on whole body

The technical field is as follows:

the utility model relates to a LED lamp cluster technical field especially relates to a luminous LED lamp cluster of entire body.

Background art:

in the conventional whole-body light-emitting LED lamp string on the market, a front light-emitting surface and a back light-emitting surface (namely, the front light-emitting surface and the back light-emitting surface can emit light) are arranged on an LED lamp bead (or a lamp body). The plane formed by the two light emitting surfaces of the LED lamp bead and the two electric wires (the positive and negative electric wires) has no fixed angle and is randomly arranged at 0-360 degrees. The purpose of 360-degree light emission is achieved by the simultaneous light emission of the two light emitting surfaces. According to the LED lamp bead based on the light-emitting structure, due to the fact that the LED lamp bead is provided with the two light-emitting surfaces, the process manufacturing is complex, and meanwhile due to the structure of the double-sided LED lamp bead, the conducting wires can only be connected to the two sides of the LED lamp bead, no positioning structure is arranged between the LED lamp bead and the conducting wires, the position of each LED lamp bead can deviate, the connection is not firm enough, and the manufacturing process is complex.

In addition, under the condition of voltage fluctuation, current and brightness of an LED chip in a common LED lamp bead product can be changed, and the color consistency of the product is poor. As shown in fig. 1, a plurality of common LED chips are connected in parallel to an electronic wire to complete LED lamp string products on the market at present, and because of the existence of resistors between the electronic wires, the longer the line from the electronic wire to the load, the larger the series resistor is, and according to ohm's law U ═ I × R, the larger the resistor is, the larger the voltage drop is. As shown in fig. 2, assuming that the line resistance generated by each segment is 0.01 ohm, the current of each LED is 20mA, and the line resistance between the positive and negative of the first lamp is 0.02 ohm, the voltage across the 1 st lamp will generate 0.02 × 20 ═ 0.4mV, the voltage across the 2 nd lamp will generate (0.02 × 2) (20 × 2) × 1.6mV, and successively downwards, the voltage across the 50 th lamp will generate (0.02 × 50) ((20 × 50) ((1V), and assuming that the power supply voltage is 5V, the voltage across the 50 th lamp will be only 4V, and then the brightness of the 50 th lamp will necessarily be darker than that of the first lamp. The brightness uniformity of the LED will be greatly different, and if the 100 th lamp is connected in parallel later, the voltage drop will make the brightness of the LED more and more obvious (as shown in fig. 2). In addition, because the VF values of all the LEDs cannot be ensured to be consistent in the LED manufacturing process, under the condition that the voltage is relatively stable, the current flowing through each lamp bead is possibly inconsistent due to the VF value difference. When the power supply voltage fluctuation is unstable, the LED is easily burned out due to excessive current. Resulting in low reliability of the line.

The inventor of the invention continuously develops the following technical scheme in order to overcome the defects of the existing product.

The utility model has the following contents:

the utility model aims to solve the technical problem that overcome the not enough that prior art exists, provide a luminous LED lamp cluster of entire body.

In order to solve the technical problem, the utility model discloses a following technical scheme: a full body light emitting LED light string comprising: the LED lamp comprises LED lamp beads and two wires connected with the LED lamp beads, wherein electrode gaps are formed on two sides of each LED lamp bead, the two wires respectively penetrate through the two electrode gaps to connect the plurality of LED lamp beads in parallel to form a lamp string, and the LED lamp beads are positioned and electrically connected by the clamping and embedding of the electrode gaps and the wires; and a light guide insulator is arranged corresponding to each LED lamp bead, and the LED lamp beads and the wires of the electric connection parts of the electrode notches of the LED lamp beads are coated by the light guide insulators.

Further, in the above technical solution, the portion of the wire that is not covered by the light guide insulator is covered by a light guide insulating wire.

Further, in the above technical scheme, the LED lamp bead with a constant current control chip is adopted as the LED lamp bead.

Further, in the above technical solution, the electrode notch is an arc notch.

Furthermore, in the above technical scheme, the light emitting surface of the LED lamp bead is perpendicular to the plane formed by the two wires, and light generated by the LED lamp bead is transmitted to the light guide insulating wire after passing through the light guide insulator.

Further, in the technical scheme, the LED lamp beads are connected on the lead in parallel at equal intervals.

The utility model adopts the above technical scheme after, it can provide a luminous LED lamp cluster of entire body, for current like product, it has overcome defects such as connection insecure, technology complicacy, luminance uniformity difference. First, the utility model discloses a LED lamp pearl both sides have been seted up the electrode breach, inlay the electrode breach of LED lamp pearl both sides as the wire of electrically conductive usefulness on, the plane mutually perpendicular at light emitting area and two wire places of LED lamp pearl like this, and the light that LED lamp pearl produced is through seeing through after the leaded light insulator, conducts to the leaded light insulated wire, just so can realize that whole LED lamp cluster entire body is luminous.

Additionally, the utility model discloses in the LED lamp pearl that adopts for the LED lamp pearl that has constant current control chip, under the undulant condition that changes of supply voltage, LED lamp pearl can both ensure that electric current and luminance keep invariable. Compared with the prior art, the whole body light-emitting constant current LED lamp string has the advantages of large light-emitting angle, uniform light emission, simple process structure, attractive product effect and good brightness consistency.

Description of the drawings:

FIG. 1 is a circuit structure diagram of a conventional LED lamp string on the market;

FIG. 2 is a circuit diagram of the lamp string of FIG. 1 after calculating the equivalent resistance of the circuit;

FIG. 3 is a schematic view of the overall structure of the present invention;

fig. 4 is a schematic front view of the structure of the present invention;

FIG. 5 is a sectional view taken along line A-A in FIG. 4;

FIG. 6 is a simplified schematic diagram of an LED lamp bead according to the present invention;

fig. 7 is the utility model discloses the circuit schematic diagram of constant current control chip in well LED lamp pearl.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following specific embodiments and accompanying drawings.

As shown in fig. 3 to 5, the utility model discloses a whole luminous LED lamp string, it includes: the LED lamp string comprises a plurality of LED lamp beads 1 and two wires 2 (used for being connected with power supply electrodes) for connecting the LED lamp beads 1, wherein the LED lamp beads 1 are connected between the two wires 2 in parallel at equal intervals to form a lamp string 10.

The LED lamp bead 1 and the lead 2 are connected in the following manner: the two sides of the LED lamp bead 1 are formed with electrode gaps 11, and the electrode gaps 11 are usually in a circular arc shape, so that the electrode gaps correspond to the cross section of the lead 2. The lead 2 penetrates through the electrode notch 11 to form clamping and embedding to realize positioning and realize electric connection, and in order to ensure the stability of the electric connection, the lead 2 and the electrode notch 11 can be welded in a soldering tin mode. In addition, the electrode notch 11 is usually arranged on a bracket of the LED lamp bead product, and the shape of the electrolysis notch 11 can be designed into other shapes according to actual conditions.

A light guide insulator 4 is arranged corresponding to each LED lamp bead 1, and the LED lamp beads 1 and the wires of the electric connection parts of the electrode gaps 11 are coated by the light guide insulators 4.

The LED lamp bead 1 can adopt an already packaged LED lamp bead product, certainly can adopt an unpackaged LED lamp bead, and when the unpackaged LED lamp bead product is adopted, the LED lamp bead 1 can be integrally packaged through the light guide insulator 4.

The portion of the conductive wire 2 not protected by the light-guiding insulator 4 is coated and formed with a light-guiding insulating wire 3. In actual production, the following modes can be adopted: when the wire 2 is processed, the insulating layer coated outside the wire is made of a light guide material, thereby forming a light guide insulating wire 3. Then, a certain gap is stripped on the light guide insulating wire 3 at equal intervals, the inner wire 2 is exposed, the exposed wire 2 is used for installing the LED lamp bead 1, finally, a light guide insulator 4 is formed in an integrated injection molding mode, and the LED lamp bead 1 and the end parts of the light guide insulating wire 3 positioned at the front end and the rear end of the LED lamp bead are packaged and fixed together through the light guide insulator.

Referring to fig. 4, the light emitting surface of the LED lamp bead 1 is perpendicular to the wire 2, and light generated by the LED lamp bead 1 is transmitted to the light-guiding insulating wire 3 after passing through the light-guiding insulator 4, so that the whole light string 10 reflects light. After adopting this kind of structure, even if LED lamp pearl 1 adopts the luminous ordinary LED lamp pearl of single face, it also can realize that the whole body of lamp cluster is luminous.

In addition, in order to realize the luminous uniformity of LED lamp cluster 10, the utility model provides an LED lamp pearl 1 adopts the LED lamp pearl that has constant current control chip. As shown in fig. 6 and 7, the LED lamp bead 1 includes an LED chip 51 and a constant current control chip 52 connected in series with the LED chip 51, the anode of the LED chip 51 is connected to the anode (+) of an external power source through the anode in the electrode gap 11, the cathode of the LED chip 51 is connected to the input port (VIN) of the constant current control chip 52, and the cathode (GND) of the constant current control chip 52 is connected to the cathode (-) of the external power source through the cathode in the electrode gap 11. Thus forming a complete, integrated LED lamp bead 1.

Referring to fig. 6, the internal circuit schematic diagram of the constant current control chip 52 includes: the consumption transistors Q1 and Q4 and the conventional transistors Q2 and Q3, wherein the drain terminal of the consumption transistor Q1 is connected with the input terminal VIN, and the gate terminal is connected with the source terminal; the grid end and the drain end of the conventional tube Q2 are connected and connected with the source end of the drain tube Q1, and the source end of the conventional tube Q2 is grounded; the depletion tube Q1 and the conventional tube Q2 work together to generate an internal reference voltage Vref; the grid of the conventional tube Q3 is connected with Vref, and the source end and the drain end are grounded; although the gate of the Q4 is connected to Vref, the source terminal is grounded, and the drain terminal is connected to the input terminal VIN. The working principle of the constant current control chip 52 is as follows: although the two transistors Q1 and Q2 cooperate to generate the internal reference voltage Vref, since G and S of Q1(M237) are connected and VGS is 0, a constant reference current Iref is generated. G and D of a conventional tube Q2(M2) are connected, VGS (namely Vref) is constant due to constant current, and the temperature coefficient can be adjusted by adjusting the width-to-length ratio of an upper tube and a lower tube. The conventional tube Q3(M266) is a conventional tube, the grid is connected with Vref, the source end and the drain end are grounded, and the low-pass filtering capacitor from the reference voltage Vref to the ground is provided. Although the gate of Q4(M272) is connected with Vref, the source end is connected with ground, and the drain end is connected with VIN; although the Q4 is used as an output power tube, the reference voltage Vref is fixed, and the output current is constant without considering the channel modulation effect.

The current of the LED chips 51 is controlled by the constant current control chip 52, so that the current flowing through each LED chip 51 in the string 10 can be ensured to be consistent and the brightness can be consistent under the condition of fluctuation or variation of the external power voltage, and the internal constant current control chip 52 can also perform overcurrent protection and overheat protection on the LED chips 51, so as to improve the stability of the LED lamp bead 1.

The utility model discloses after lamp cluster 10 adopted above-mentioned LED lamp pearl 1 that has constant current control chip, when using, the LED chip 51 of 1 inside of every LED lamp pearl all can be through the electric current that constant current control chip 52 constant current control flowed through, all LED lamp pearls 51's luminance is unanimous around guaranteeing. And when the number of parallel points is more, under the condition that the voltage at the tail end is slowly reduced, the LED lamp bead 1 can ensure that the current of the internal LED chip 51 is consistent. Meanwhile, an overheating and overcurrent protection circuit is arranged in the constant current control chip 52 to prevent the light-emitting chip from being damaged by overcurrent and overheating.

Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.

Claims

1. A full body light emitting LED light string comprising: LED lamp pearl (1), two wires (2) of connecting LED lamp pearl (1), its characterized in that: electrode gaps (11) are formed on two sides of each LED lamp bead (1), the two wires (2) respectively penetrate through the two electrode gaps (11) to connect the LED lamp beads (1) in parallel to form a lamp string (10), and the LED lamp beads (1) are positioned and electrically connected by the clamping and embedding of the electrode gaps (11) and the wires (2);

a light guide insulator (4) is arranged corresponding to each LED lamp bead (1), and the LED lamp beads (1) and the wires (2) of the electrode notches (11) which are electrically connected with the LED lamp beads are coated by the light guide insulators (4).

2. The LED light string emitting light through the body as claimed in claim 1, wherein: the part of the lead (2) which is not covered by the light guide insulator (4) is covered by the light guide insulating wire (3).

3. The LED light string emitting light through the body as claimed in claim 1, wherein: the LED lamp beads (1) are LED lamp beads with constant-current control chips.

4. The LED light string emitting light through the body as claimed in claim 1, wherein: the electrode notch (11) is an arc notch.

5. The LED light string emitting light through the body according to any one of claims 2-4, wherein: the LED lamp beads (1) are perpendicular to a plane formed by the two wires (2) in the light emitting surface, and light generated by the LED lamp beads (1) is transmitted to the light guide insulating wire (3) after passing through the light guide insulator (4).

6. The LED light string emitting light through the body according to any one of claims 1-4, wherein: the LED lamp beads (1) are connected in parallel on the lead (2) in an equidistance mode.