CN212412049U

CN212412049U - LED light source with four serially connected cores

Info

Publication number: CN212412049U
Application number: CN202021246492.XU
Authority: CN
Inventors: 邓伟强; 胡春平
Original assignee: Shenzhen Lingbenyang Optoelectronics Co ltd
Current assignee: Shenzhen Lingbenyang Optoelectronics Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-26
Anticipated expiration: 2030-06-29

Abstract

The utility model relates to a LED light source of four-core series connection, including base plate and LED chip, the LED chip includes first group LED chip, second group LED chip, third group LED chip and fourth group LED chip, first group LED chip dispose in on the anodal pad of base plate, second group LED chip with fourth group LED chip dispose in on the negative pole pad of base plate, the positive pole of first group LED chip with the anodal electric connection of base plate, the negative pole of fourth group LED chip with the negative pole electric connection of base plate, first group LED chip the second group LED chip the third group LED chip the fourth group LED chip establishes ties.

Description

LED light source with four serially connected cores

Technical Field

The utility model relates to a LED lamps and lanterns technical field especially relates to a LED light source of four-core series connection.

Background

The efficiency of the LED chip light source of the existing LED lamp is low, the light brightness is generally promoted by high power, and the LED lamp is not environment-friendly. On the other hand, the LED light sources in the current market have the color change requirement, but the color change of the existing LED light sources is insufficient, the brightness of lamplight is influenced by fluorescent glue, and the light color is darker and cannot meet the requirement.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a four-core led light source with high brightness.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a LED light source of four-core series connection, includes base plate and LED chip, the LED chip includes first group LED chip, second group LED chip, third group LED chip and fourth group LED chip, first group LED chip dispose in on the anodal pad of base plate, second group LED chip third group LED chip with fourth group LED chip dispose in on the negative pole pad of base plate, the positive pole of first group LED chip with the anodal electric connection of base plate, the negative pole of fourth group LED chip with the negative pole electric connection of base plate, first group LED chip the second group LED chip the third group LED chip the fourth group LED chip establish ties.

Further, the LED lamp also comprises fluorescent glue, and at least one of the first group of LED chips, the second group of LED chips, the third group of LED chips and the fourth group of LED chips excites the fluorescent glue.

Further, the fluorescent glue comprises four fluorescent powder layers, the four fluorescent powder layers are excited to emit three light colors, and non-overlapping regions are arranged among wavelengths of the three light colors.

Further, three of the first group of LED chips, the second group of LED chips, the third group of LED chips, and the fourth group of LED chips excite the fluorescent glue.

Further, the serial connection voltage of the first group of LED chips, the second group of LED chips, the third group of LED chips and the fourth group of LED chips is 10.5V-11.5V.

Furthermore, the positive electrode bonding pad of the substrate and the negative electrode bonding pad of the substrate are positioned on the same surface.

Furthermore, the first group of LED chips, the second group of LED chips, the third group of LED chips and the fourth group of LED chips are in a strip shape, and the positive pole and the negative pole of the first group of LED chips and the negative pole of the third group of LED chips are respectively positioned at two ends.

Further, the first group of LED chips, the second group of LED chips, the third group of LED chips, and the fourth group of LED chips are parallel to each other.

Further, still including establishing the notched LED support with locate the cooling pad in the recess, positive pad with the negative pole pad sets up on the cooling pad in the recess positive pad with be equipped with the median between the negative pole pad, positive pad first group LED chip second group LED chip third group LED chip fourth group LED chip with the negative pole pad passes through the gold thread and links to each other.

Further, the first group of LED chips, the second group of LED chips, the third group of LED chips, and the fourth group of LED chips are connected in parallel to form a rectifying circuit.

The beneficial effects of the utility model reside in that: can increase luminance through four-core series connection to can mutually support and improve light effect, the LED chip that just the electric current is the same can control the series connection well when establishing ties, make luminous even.

Drawings

Fig. 1 is a schematic structural diagram of a four-core series led light source according to an embodiment of the present invention;

fig. 2 is a schematic circuit structure diagram of a four-core series led light source according to an embodiment of the present invention;

fig. 3 is a schematic circuit structure diagram of another embodiment of a four-core series led light source according to an embodiment of the present invention;

fig. 4 is a schematic circuit structure diagram of another embodiment of a four-core series led light source according to an embodiment of the present invention.

Description of reference numerals:

11. a positive electrode pad; 12. a negative electrode pad; 21. a first group of LED chips; 22. a second group of LED chips;

23. a third group of LED chips; 24. a fourth group of LED chips; 30. an LED support;

31. an isolation zone; 40. a rectifying circuit; 50. a voltage reduction circuit; 51. a voltage-reducing current-limiting capacitor; 52. a bleeder resistor; 60. a constant current diode; 70. a filter capacitor;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description, with reference to the accompanying drawings and embodiments, further describes in detail an led light source of the present invention with four cores connected in series. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-4, a LED light source with four serially connected chips includes a substrate and LED chips, where the LED chips include a first group of LED chips 21, a second group of LED chips 22, a third group of LED chips 23, and a fourth group of LED chips 24, the first group of LED chips 21 is disposed on a positive electrode bonding pad 11 of the substrate, the second group of LED chips 22, the third group of LED chips 23, and the fourth group of LED chips 24 are disposed on a negative electrode bonding pad 12 of the substrate, a positive electrode of the first group of LED chips 21 is electrically connected to a positive electrode of the substrate, a negative electrode of the fourth group of LED chips 24 is electrically connected to a negative electrode of the substrate, and the first group of LED chips 21, the second group of LED chips 22, the third group of LED chips 23, and the fourth group of.

Can increase luminance through four-core series connection to can mutually support and improve light effect, the LED chip that just the electric current is the same can control the series connection well when establishing ties, make luminous even.

In particular, the fluorescent glue is also included, and at least one of the first group of LED chips 21, the second group of LED chips 22, the third group of LED chips 23 and the fourth group of LED chips 24 excites the fluorescent glue. The fluorescent glue can emit light color according to the requirement, and the light effect is improved.

Preferably, the fluorescent glue comprises four fluorescent powder layers, the four fluorescent powder layers are excited to emit three light colors, and non-overlapping regions are formed among wavelengths of the three light colors. The wavelengths of the three light colors are not completely overlapped, and the other light color enables the three light colors to be mixed with each other to generate gorgeous light. Typically, the phosphor layer is wrapped on the top and sides of the LED chip.

Further, three of the first, second, third and fourth groups of

LED chips

21, 22, 23 and 24 excite the fluorescent glue. One of the fluorescent glue is not excited, only has the illumination effect, and improves the brightness while ensuring the gorgeous color of the light.

Specifically, the first group of LED chips 21 excites the first, second, and third phosphor layers, the second group of LED chips 22 excites the second, third, and fourth phosphor layers, the third group of LED chips 23 excites the third layer of LED phosphor layers, and the fourth group of LED chips 24 does not excite.

Preferably, the series voltage of the first group of LED chips 21, the second group of LED chips 22, the third group of LED chips 23 and the fourth group of LED chips 24 is 10.5V-11.5V. 10.5V-11.5V is suitable for most LED chips, and can ensure the brightness and the effect of light.

Generally, the positive electrode pad 11 of the substrate and the negative electrode pad 12 of the substrate are located on the same plane. Namely, the first group of LED chips 21, the second group of LED chips 22, the third group of LED chips 23, and the fourth group of LED chips 24 emit light to the same surface.

Preferably, the first group of LED chips 21, the second group of LED chips 22, the third group of LED chips 23, and the fourth group of LED chips 24 are in a shape of a strip, and the anode and the cathode thereof are respectively located at two ends. It is understood that the positive and negative electrodes of the first, second, third and fourth groups of

LED chips

21, 22, 23 and 24 may be located at the same end, and may be located at different ends, preferably staggered or located at the same end.

Preferably, the first, second, third and fourth groups of

LED chips

21, 22, 23 and 24 are parallel to each other.

Referring to fig. 1, the LED module further includes an LED bracket 30 having a groove and a heat dissipation pad disposed in the groove, the positive bonding pad 11 and the negative bonding pad 12 are disposed on the heat dissipation pad, an isolation strip 31 is disposed between the positive bonding pad 11 and the negative bonding pad 12 in the groove, and the positive bonding pad 11, the first group of LED chips 21, the second group of LED chips 22, the third group of LED chips 23, the fourth group of LED chips 24 and the negative bonding pad 12 are connected by gold wires. Specifically, the area of the positive electrode pad 11 is two to three times that of the negative electrode pad 12, and the ratio of the area of the positive electrode pad 11 to the area of the negative electrode pad 12 is 3 to 7. It will be appreciated that the isolation band 31 is made of an insulating material, typically plastic, rubber or ceramic.

As another embodiment of the present invention, a rectifying circuit 40 is connected in parallel to the first group of LED chips 21, the second group of LED chips 22, the third group of LED chips 23 and the fourth group of LED chips 24. The rectifier circuit 40 is a single-phase bridge rectifier circuit 40, and is composed of four diodes, and is configured to convert an ac voltage into a unidirectional pulsating dc voltage. Particularly, the rectifying circuit 40 is connected with a voltage-reducing circuit 50 consisting of a voltage-reducing current-limiting capacitor 51 and a discharge resistor 52 which are connected in parallel, and the voltage-reducing current-limiting capacitor 51 can generate capacitive reactance under a certain alternating current signal frequency, so that the maximum working current of the LED driver for lighting is limited, and current-limiting voltage reduction is realized; the bleeder resistor 52 is connected in parallel to both ends of the buck current-limiting capacitor 51, and is used for providing a bleeder path for the buck current-limiting capacitor 51, so as to bleed off the electric energy stored at both ends of the buck current-limiting capacitor 51 after the buck current-limiting capacitor 51 stops working. Particularly, the first group of LED chips 21, the second group of LED chips 22, the third group of LED chips 23 and the fourth group of LED chips 24 are connected in series with the constant current diode 60, so that the LEDs operate under stable voltage and current drive, the LEDs are prevented from being burned out, and the uniform and stable light-emitting brightness and no-flicker of the LEDs are realized. As a further mode of the utility model, first group LED chip 21, second group LED chip 22, third group LED chip 23 and fourth group LED chip 24 parallel have a filter capacitor 70, filter capacitor 70 parallel has a rectifier circuit 40, rectifier circuit 40 is connected with a step-down current-limiting electric capacity 51, become low pressure output to alternating current high pressure, obtain the direct current after rectifier circuit 40 rectification, again through transient state protection, obtain more steady direct current after filter capacitor 70 filters, when disturbing, the voltage at filter capacitor 70 both ends can not break suddenly, LED's normal work has been protected.

To sum up, the LED light source with four-core series connection provided by the utility model can increase the brightness through the four-core series connection, and can improve the light effect by mutual cooperation, and the LED chips in series connection can be well controlled by the same current when in series connection, so that the light is emitted uniformly; and the fluorescent glue can emit different light, and the light is gorgeous and has high brightness.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention.

Claims

1. The LED light source is characterized by comprising a substrate and LED chips, wherein the LED chips comprise a first group of LED chips, a second group of LED chips, a third group of LED chips and a fourth group of LED chips, the first group of LED chips are arranged on a positive electrode bonding pad of the substrate, the second group of LED chips, the third group of LED chips and the fourth group of LED chips are arranged on a negative electrode bonding pad of the substrate, the positive electrode of the first group of LED chips is electrically connected with the positive electrode of the substrate, the negative electrode of the fourth group of LED chips is electrically connected with the negative electrode of the substrate, and the first group of LED chips, the second group of LED chips, the third group of LED chips and the fourth group of LED chips are connected in series.

2. A four-core LED light source as claimed in claim 1, further comprising a fluorescent gel, wherein at least one of the first, second, third and fourth sets of LED chips excites the fluorescent gel.

3. A four-core series led light source as claimed in claim 2, wherein the phosphor gel comprises four phosphor layers, the four phosphor layers excite to emit three light colors, and there is a non-overlapping region between the wavelengths of the three light colors.

4. A four-core LED light source as claimed in claim 2, wherein three of the first, second, third and fourth LED chips excite the phosphor gel.

5. A four-core series LED light source as claimed in claim 1, wherein the series voltage of the first, second, third and fourth LED chips is 10.5V-11.5V.

6. A four-core series led light source as claimed in claim 1, wherein the positive bonding pad of the substrate and the negative bonding pad of the substrate are located on the same plane.

7. An LED light source of claim 1, wherein the first, second, third and fourth LED chips are in the shape of a strip, and the positive and negative electrodes thereof are respectively disposed at two ends.

8. A four-core LED light source as claimed in claim 7, wherein the first, second, third and fourth groups of LED chips are parallel to each other.

9. An LED light source of claim 1, further comprising an LED support with a groove and a heat sink pad in the groove, wherein the positive pad and the negative pad are disposed on the heat sink pad, a separation strip is disposed between the positive pad and the negative pad in the groove, and the positive pad, the first group of LED chips, the second group of LED chips, the third group of LED chips, the fourth group of LED chips and the negative pad are connected by gold wires.

10. A four-chip series LED light source as claimed in claim 1, wherein a rectifying circuit is connected in parallel to the first, second, third and fourth LED chips.