CN210007954U

CN210007954U - Lighting unit and lighting device

Info

Publication number: CN210007954U
Application number: CN201920376247.1U
Authority: CN
Inventors: 谷青博; 王立娟; 刘研
Original assignee: PMLED OPTOELECTRONICES Co Ltd
Current assignee: PMLED OPTOELECTRONICES Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-01-31
Anticipated expiration: 2029-03-22

Abstract

The utility model relates to the technical field of lighting, a lighting unit and a lighting device are provided, the lighting unit comprises a shell, a power input end and a plurality of bonding pads are arranged, the power input end comprises a positive power input end and a negative power input end, a plurality of LED chips are connected with the corresponding bonding pads, a control circuit is arranged in the shell and is connected with the LED chips through the bonding pads and is used for controlling the current and/or the voltage of the LED chips, wherein the positive power input end, the LED chips, the control circuit and the negative power input end are connected into paths.

Description

Lighting unit and lighting device

Technical Field

The utility model belongs to the technical field of the illumination, especially, relate to lighting unit and lighting device.

Background

An LED (light emitting Diode) is an kinds of semiconductor components, and is mainly used as an indicator light, a display LED panel, and the like at first, and is also used as illumination with the appearance of a white LED, and is increasingly applied to general applications.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiments of the present invention provide a lighting unit and a lighting device to solve the problem in the prior art that the stroboscopic phenomenon often occurs when the power supply voltage is unstable, and there are ripples or ripples.

The embodiment of the utility model provides an aspect of provides kinds of lighting unit, include:

a housing provided with a power input terminal and a plurality of pads; the power input end comprises a positive power input end and a negative power input end;

a plurality of LED chips connected to the corresponding pads;

the control circuit is arranged in the shell, is connected with the LED chips through the bonding pads and is used for controlling the current and/or voltage of the LED chips;

wherein the positive power input, the plurality of LED chips, the control circuit and the negative power input are connected in paths.

Optionally, the plurality of LED chips form at least LED chip groups, each LED chip group includes a plurality of LED chips, and the LED chips in the LED chip groups are connected to paths;

the positive power supply input, the at least LED chip sets, the control circuit and the negative power supply input are connected in paths.

Optionally, the plurality of LED chips form groups of LED chips, the groups of LED chips having a th end and a second end;

the input end of the control circuit is connected with the positive power supply input end, the output end of the control circuit is connected with the th end of the LED chip set, and the second end of the LED chip set is connected with the negative power supply input end.

the th end of the LED chip set is connected with the positive power supply input end, the second end of the LED chip set is connected with the input end of the control circuit, and the output end of the control circuit is connected with the negative power supply input end.

Optionally, the plurality of LED chips form an th LED chip group and a second LED chip group, each LED chip group including a plurality of connected LED chips;

the th end of the th LED chip group is connected with the positive power supply input end, the second end of the th LED chip group is connected with the input end of the control circuit, the th end of the second LED chip group is connected with the output end of the control circuit, and the second end of the second LED chip group is connected with the negative power supply input end.

Optionally, the LED chips in each LED chip group are sequentially connected in series.

Optionally, the control circuit is a constant current control circuit.

Optionally, the constant current control circuit includes a constant current control module and an adjustable resistor connected to each other; and the adjusting end of the adjustable resistor is connected with the constant current control module.

Optionally, the lighting unit further comprises:

and the fluorescent powder colloid covers the plurality of LED chips.

The second aspect of the present invention also discloses kinds of lighting devices, including at least arbitrary kinds of lighting units.

The embodiment of the utility model provides a, control through setting up control circuit the electric current and/or the voltage of a plurality of LED chips can stabilize the electric current and/or the voltage of each LED chip, when the voltage that inputs through power input end is unstable, have pulsation or ripple wave, can be to the voltage adjustment of input so that the voltage and/or the electric current of each LED chip are stable, prevent that each LED chip from producing stroboscopic phenomenon.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a lighting unit provided in an embodiment of the present invention;

fig. 2 is a schematic diagram of a connection between an LED chip set and a control circuit according to an embodiment of the present invention;

fig. 3 is another connection schematic diagrams of the LED chipset and the control circuit according to the embodiment of the present invention;

fig. 4 is another connection schematic diagrams of the LED chipset and the control circuit provided by the embodiment of the present invention;

fig. 5 is a circuit diagram of a control circuit according to an embodiment of the present invention.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

In order to explain the technical solution of the present invention, the following description is made by using specific examples.

Fig. 1 shows a schematic structural diagram of a lighting unit in the present embodiment, and referring to fig. 1, the lighting unit may include a housing 100, a plurality of LED chips 200, and a control circuit (not shown).

The LED light source comprises a shell 100, a plurality of LED chips 200 and a control circuit, wherein the shell 100 is provided with a power input end and a plurality of bonding pads (not shown), the power input end comprises a positive power input end and a negative power input end, the LED chips 200 are connected with the corresponding bonding pads, the control circuit is arranged in the shell 100 and is connected with the LED chips 200 through the bonding pads and used for controlling current and/or voltage of the LED chips 200, and the positive power input end, the LED chips 200, the control circuit and the negative power input end are connected into paths.

Above-mentioned lighting unit, through setting up control circuit and come control the electric current and/or the voltage of a plurality of LED chips 200, can stabilize the electric current and/or the voltage of each LED chip 200, when the voltage that inputs through the power input end is unstable, have pulsation or ripple wave, can adjust so that the voltage and/or the electric current of each LED chip are stable to the voltage of inputing, prevent that each LED chip from producing stroboscopic phenomenon.

For example, each LED chip 200 may be uniformly arranged, or may be unevenly arranged, or may be arranged in a certain smaller area, which is not limited to the manner shown in fig. 1.

Optionally, the plurality of LED chips 200 may form at least LED chip sets, each LED chip set includes a plurality of LED chips 200, and the connection with the LED chips 200 in the LED chip set is paths, and the connection of the positive power input terminal, the at least LED chip sets, the control circuit and the negative power input terminal is paths.

It should be noted that, each LED chip set may be connected in series in sequence and then connected to the control circuit, each LED chip set may also be connected in parallel and then connected to the control circuit, and each LED chip set may also be connected in parallel and then connected in series between some LED chip sets and then connected to the control circuit, which is not limited in this respect.

The following connection relationships between the LED chip sets and the control circuit are illustrated for exemplary purposes only, and not limited thereto.

Referring to fig. 2 and , in the embodiment, the plurality of LED chips 200 may form LED chip sets 210, the LED chip sets 210 have th terminals and second terminals, the input terminal of the control circuit 300 is connected to the positive power input terminal a, the output terminal of the control circuit 300 is connected to the th terminal of the LED chip set 210, and the second terminal of the LED chip set 210 is connected to the negative power input terminal B.

Referring to fig. 3, in embodiments, the plurality of LED chips 200 may form LED chip sets 210, the LED chip sets 210 have th terminals and second terminals, the th terminals of the LED chip sets 210 are connected to the positive power input terminal a, the second terminals of the LED chip sets 210 are connected to the input terminal of the control circuit 300, and the output terminal of the control circuit 300 is connected to the negative power input terminal B.

Referring to fig. 4 and , in an embodiment, the plurality of LED chips 200 may form a LED chip group 210 and a second LED chip group 220, each LED chip group has a th end and a second end, and each LED chip group includes a plurality of connected LED chips, the th end of the LED chip group 210 is connected to the positive power input terminal a, the second end of the LED chip group 210 is connected to the input terminal of the control circuit 300, the th end of the second LED chip group 220 is connected to the output terminal of the control circuit 300, and the second end of the second LED chip group 220 is connected to the negative power input terminal B.

In the above embodiments, the LED chips 200 in each LED chip set may be connected in series, or some LED chips 200 may be connected in parallel, and some LED chips 200 are connected in series, which is not limited to this. For example, the LED chips 200 in each LED chip set may be connected in series.

In embodiments, the control circuit may be a constant current control circuit, and referring to fig. 5 and embodiments, the constant current control circuit includes a constant current control module 310 and an adjustable resistor R connected to each other, and an adjusting terminal of the adjustable resistor R is connected to the constant current control module 310.

Specifically, the input end of the constant current control module 310 is connected to the input end C of the control circuit 300, the output end of the constant current control module 310 is connected to the th end of the adjustable resistor R, the second end of the adjustable resistor R is connected to the output end D of the control circuit 300, and the adjusting end of the adjustable resistor R is connected to the control end of the constant current control module 310, wherein the constant current control module 310 is configured to stabilize the current flowing through each LED chip, and the constant current control module 310 adjusts the resistance of the adjustable resistor R, so as to adjust the output current of the constant current control circuit, thereby adjusting the power of the lighting unit.

Illustratively, the constant current control module 310 may be a constant current driving chip, for example, an LDT type constant current driving chip.

Optionally, the lighting unit may further include a phosphor gel. The phosphor gel covers the plurality of LED chips 200, and each LED chip 200 interacts with the phosphor gel to emit white light. Of course, the skilled in the art can set the fluorescent powder colloid with different proportions according to the actual requirement to obtain the desired parameters such as color temperature, luminous flux, etc., and the description thereof is omitted.

The lighting unit can realize stable work under the condition of high-voltage direct current power supply, the voltage range can be designed to 300-400V in general, the lighting unit is very suitable for the power supply environment of the linear rectification or non-isolation scheme boost rectification of 220V alternating current commercial power, the light source can emit light without stroboflash even under the condition of unstable power supply voltage and pulsation or ripple, and the lighting unit can be combined with the boost rectification or PFC correction circuit of the non-isolation scheme to manufacture a very high-efficiency photoelectric conversion system, wherein the LED consumption can reach more than 97 percent in the whole system.

The lighting unit has high voltage and low current, reduces the power consumption of the sampling part of the driving power supply and improves the power supply efficiency; the plurality of lighting units can be used in parallel, the number of power increasing and decreasing modules is convenient to increase and decrease in the design of the LED lamp, and the LED lamp is simple to produce and install and easy to operate; the conversion efficiency is high, the LED consumption ratio can reach more than 97 percent, and the overall luminous efficiency can reach 200 lumens/watt;

the embodiment of the utility model provides a still disclose kind lighting device, include at least above-mentioned any kind of lighting units, and can connect in parallel each other between each lighting unit this lighting device has all beneficial effects that above-mentioned lighting unit has, no longer describe herein.

The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

A lighting unit of the type , comprising:

a housing provided with a power input terminal and a plurality of pads; the power input end comprises a positive power input end and a negative power input end;

a plurality of LED chips connected to the corresponding pads;

the control circuit is arranged in the shell, is connected with the LED chips through the bonding pads and is used for controlling the current and/or voltage of the LED chips;

wherein the positive power input, the plurality of LED chips, the control circuit and the negative power input are connected in paths.
2. The lighting unit of claim 1, wherein the plurality of LED chips form at least groups of LED chips, each group of LED chips comprising a plurality of LED chips, and connected to the LED chips in the group of LED chips as vias;

the positive power supply input, the at least LED chip sets, the control circuit and the negative power supply input are connected in paths.
3. The lighting unit of claim 2, wherein the plurality of LED chips form groups of LED chips, the groups of LED chips having a th end and a second end;

the input end of the control circuit is connected with the positive power supply input end, the output end of the control circuit is connected with the th end of the LED chip set, and the second end of the LED chip set is connected with the negative power supply input end.
4. The lighting unit of claim 2, wherein the plurality of LED chips form groups of LED chips, the groups of LED chips having a th end and a second end;

the th end of the LED chip set is connected with the positive power supply input end, the second end of the LED chip set is connected with the input end of the control circuit, and the output end of the control circuit is connected with the negative power supply input end.
5. The lighting unit of claim 2, wherein the plurality of LED chips form an th group of LED chips and a second group of LED chips, each group of LED chips comprising a plurality of connected LED chips;

the th end of the th LED chip group is connected with the positive power supply input end, the second end of the th LED chip group is connected with the input end of the control circuit, the th end of the second LED chip group is connected with the output end of the control circuit, and the second end of the second LED chip group is connected with the negative power supply input end.
6. A lighting unit as recited in any one of claims 3-5 and , wherein the LED chips of each group of LED chips are connected in series one after another.
7. The lighting unit of claim 6, wherein the control circuit is a constant current control circuit.
8. The lighting unit of claim 7, wherein the constant current control circuit comprises a constant current control module and an adjustable resistor connected; and the adjusting end of the adjustable resistor is connected with the constant current control module.
9. The lighting unit of any of claims 1-5, further comprising:

and the fluorescent powder colloid covers the plurality of LED chips.
10, lighting device, comprising at least lighting units as claimed in any of claims 1-9.