Light-emitting device and light-emitting device

Abstract

The utility model discloses a light-emitting device and a light-emitting device. The light-emitting device comprises at least one light-emitting module and a current limiting module. The light-emitting module comprises a plurality of first light-emitting units and a plurality of second light-emitting units, the first ends of the first light-emitting units are connected with the first power port through the current limiting module, the second ends of the first light-emitting units are connected with the second power port, and the first light-emitting units comprise a plurality of first light-emitting elements which are connected in series; the first end of the second light-emitting unit is connected with the first power port through the current limiting module, the second end of the second light-emitting unit is connected with the second power port, and the second light-emitting unit comprises a plurality of second light-emitting elements which are connected in series; wherein the first end of the first light-emitting unit and the second end of the second light-emitting unit have the same polarity, and the second end of the first light-emitting unit and the first end of the second light-emitting unit have the same polarity. According to the technical scheme, the size of the light-emitting device is reduced, and the cost of the light-emitting device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of light-emitting devices, and in particular to a light-emitting device and a light-emitting apparatus. Background Art

[0002] A light-emitting diode (LED) is a commonly used light-emitting element, and a light-emitting diode can form a variety of light-emitting devices.

[0003] Generally, a light-emitting device is provided with a constant current power supply chip and a rectifier bridge circuit. The constant current power supply chip can provide alternating current, and the rectifier bridge circuit converts the alternating current into direct current. The light-emitting element can emit light after receiving the direct current.

[0004] However, the use of a constant current power supply chip and a rectifier bridge circuit makes the light emitting device larger in size and more expensive. Utility Model Content

[0005] The utility model provides a light emitting device and a light emitting apparatus to solve the problems of large volume and high cost of the light emitting device.

[0006] According to one aspect of the present invention, a light emitting device is provided, the light emitting device comprising: at least one light emitting module and a current limiting module;

[0007] The light-emitting module includes a plurality of first light-emitting units and a plurality of second light-emitting units, wherein a first end of the first light-emitting unit is connected to a first power port through the current limiting module, and a second end of the first light-emitting unit is connected to a second power port, and the first light-emitting unit includes a plurality of first light-emitting elements connected in series;

[0008] The first end of the second light-emitting unit is connected to the first power port through the current limiting module, and the second end of the second light-emitting unit is connected to the second power port. The second light-emitting unit includes a plurality of second light-emitting elements connected in series. The first end of the first light-emitting unit and the second end of the second light-emitting unit have the same polarity, and the second end of the first light-emitting unit and the first end of the second light-emitting unit have the same polarity.

[0009] At least one of the first light-emitting units and at least one of the second light-emitting units are arranged alternately.

[0010] Optionally, the light-emitting module is an integrated light-emitting chip, or the first light-emitting element in the light-emitting module is a discrete element, and the second light-emitting element in the light-emitting module is a discrete element.

[0011] Optionally, the light-emitting module is an integrated light-emitting chip, and the light-emitting module further includes a substrate, a first conductive connection portion, and a second conductive connection portion;

[0012] The first light emitting unit and the second light emitting unit are located on the substrate;

[0013] The plurality of first light-emitting elements in the first light-emitting unit are connected in series via the first conductive connection portion, and the plurality of second light-emitting elements in the second light-emitting unit are connected in series via the second conductive connection portion.

[0014] Optionally, the light emitting device includes a plurality of light emitting modules;

[0015] A plurality of the light emitting modules are connected in series or in parallel;

[0016] Alternatively, a portion of the light-emitting modules are connected in series to form a first light-emitting group, and another portion of the light-emitting modules are connected in series to form a second light-emitting group, and the first light-emitting group and the second light-emitting group are connected in parallel.

[0017] Optionally, the first light-emitting element in the light-emitting module is a discrete element, and the second light-emitting element in the light-emitting module is a discrete element;

[0018] The light emitting module further includes a chip carrier, a first connecting lead and a second connecting lead;

[0019] The first light-emitting element and the second light-emitting element are located on a patch carrier, the multiple first light-emitting elements in the first light-emitting unit are connected in series through the first connecting lead, and the multiple second light-emitting elements in the second light-emitting unit are connected in series through the second connecting lead.

[0020] Optionally, the patch carrier is a transparent carrier.

[0021] Optionally, alternating current (AC) is connected between the first power port and the second power port; the AC power is provided by an external power supply device or mains electricity.

[0022] Optionally, the current limiting module includes a current limiting resistor, and the current limiting resistor is connected between the first power port and the first end of the first light-emitting unit.

[0023] According to another aspect of the present invention, a light-emitting device is provided. The light-emitting device includes the light-emitting device according to any embodiment of the present invention.

[0024] Optionally, the light-emitting device is a G9 light-emitting device.

[0025] According to the technical solution of the embodiment of the present utility model, an alternating current is connected between the first power port and the second power port. By setting the polarity of the first end of the first light-emitting unit to be the same as that of the second end of the second light-emitting unit, and the polarity of the second end of the first light-emitting unit to be the same as that of the first end of the second light-emitting unit, the light-emitting element emits light in both the positive half-cycle and the negative half-cycle of the alternating current, and there is no need to set a rectifier circuit, which reduces the volume of the circuit in the light-emitting device and reduces the cost of the light-emitting device. In addition, at least one first light-emitting unit and at least one second light-emitting unit are arranged alternately, so that the light-emitting area of ​​the light-emitting device is evenly distributed in the positive half-cycle and the negative half-cycle of the alternating current, which is conducive to improving the light-emitting effect. Moreover, by setting a current limiting module, overcurrent or overvoltage faults in the circuit are avoided, and the normal light-emitting of the light-emitting module can be ensured, and there is no need to set a constant current power supply chip, which further reduces the cost of the light-emitting device.

[0026] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the circuit structure of a light-emitting device provided by an embodiment of the present utility model;

[0029] Figure 2 This is a structural diagram of a light emitting module provided by an embodiment of the present utility model;

[0030] Figure 3 This is a schematic diagram of the circuit structure of another light-emitting device provided by an embodiment of the present utility model;

[0031] Figure 4 This is a structural diagram of a light emitting module provided by an embodiment of the present utility model;

[0032] Figure 5 This is a circuit structure diagram of another light-emitting device provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0033] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] This embodiment provides a light emitting device, Figure 1 This is a schematic diagram of the circuit structure of a light emitting device provided by an embodiment of the present utility model, with reference to Figure 1 , the light emitting device includes: at least one light emitting module 100 and a current limiting module 200;

[0036] The light-emitting module 100 includes a plurality of first light-emitting units 110 and a plurality of second light-emitting units 120. The first ends of the first light-emitting units 110 are connected to the first power port P1 via the current limiting module 200, and the second ends of the first light-emitting units 110 are connected to the second power port P2. The first light-emitting unit 110 includes a plurality of first light-emitting elements D1 connected in series.

[0037] The first end of the second light-emitting unit 120 is connected to the first power port P1 through the current limiting module 200, and the second end of the second light-emitting unit 120 is connected to the second power port P2. The second light-emitting unit 120 includes a plurality of second light-emitting elements D2 connected in series. The first end of the first light-emitting unit 110 and the second end of the second light-emitting unit 120 have the same polarity, and the second end of the first light-emitting unit 110 and the first end of the second light-emitting unit 120 have the same polarity.

[0038] At least one first light emitting unit 110 and at least one second light emitting unit 120 are alternately arranged.

[0039] The current limiting module 200 has a current limiting function and may include a resistor, or other components such as a current limiter, an inductor, or a diode, which is not limited in this embodiment. The first light-emitting element D1 and the second light-emitting element D2 may be light-emitting diodes (LEDs), or may be Mini LEDs, Micro LEDs, etc., which is not limited in this embodiment. The first power port P1 is a positive power port, and the second power port P2 is a negative power port; alternatively, the first power port P1 is a negative power port, and the second power port P2 is a positive power port, which is not limited in this embodiment.

[0040] Specifically, for example, the first end of the first light-emitting unit 110 is an anode, the second end of the first light-emitting unit 110 is a cathode, the first end of the second light-emitting unit 120 is a cathode, and the second end of the second light-emitting unit 120 is an anode. Alternatively, the first end of the first light-emitting unit 110 is a cathode, the second end of the first light-emitting unit 110 is an anode, the first end of the second light-emitting unit 120 is an anode, and the second end of the second light-emitting unit 120 is a cathode. In this way, the first end of the first light-emitting unit 110 and the second end of the second light-emitting unit 120 have the same polarity, and the second end of the first light-emitting unit 110 and the first end of the second light-emitting unit 120 have the same polarity.

[0041] Alternating current is connected between the first power port P1 and the second power port P2. By setting the polarity of the first end of the first light-emitting unit 110 and the second end of the second light-emitting unit 120 to be the same, and the polarity of the second end of the first light-emitting unit 110 and the first end of the second light-emitting unit 120 to be the same, the first light-emitting element D1 in the first light-emitting unit 110 emits light during the positive half-cycle of the alternating current, and the second light-emitting element D2 in the second light-emitting unit 120 emits light during the negative half-cycle of the alternating current. Alternatively, the second light-emitting element D2 in the second light-emitting unit 120 emits light during the positive half-cycle of the alternating current, and the first light-emitting element D1 in the first light-emitting unit 110 emits light during the negative half-cycle of the alternating current. This ensures that the light-emitting elements emit light during both the positive and negative half-cycles of the alternating current, and eliminates the need for a rectifier circuit, reducing the circuit volume and cost of the light-emitting device.

[0042] Furthermore, one first light-emitting unit 110 can be arranged in a row, and one second light-emitting unit 120 can be arranged in a row. Alternating the arrangement of at least one first light-emitting unit 110 and at least one second light-emitting unit 120 ensures that the light-emitting area of ​​the light-emitting device is evenly distributed during the positive and negative half-cycles of the alternating current, thereby improving the lighting effect. For example, one first light-emitting unit 110 and one second light-emitting unit 120 can be arranged alternately, or two first light-emitting units 110 and two second light-emitting units 120 can be arranged alternately, or multiple first light-emitting units 110 and multiple second light-emitting units 120 can be arranged alternately. Figure 1Schematic diagram shows a situation where a first light emitting unit 110 and a second light emitting unit 120 are alternately arranged, but this is not limiting. Figure 1 Detailed description is given of a case where the light emitting device includes one light emitting module 100 , but this is not limiting.

[0043] The number of the light emitting units may be an even number or an odd number, that is, the number of the first light emitting units 110 and the second light emitting units 120 may be the same or different, which is not limited in this embodiment.

[0044] Moreover, by providing the current limiting module 200, overcurrent or overvoltage faults in the circuit are avoided, and the light-emitting module 100 can be guaranteed to emit light normally without providing a constant current power supply chip, further reducing the cost of the light-emitting device.

[0045] In the technical solution of this embodiment, an alternating current is connected between the first power port and the second power port. By setting the polarity of the first end of the first light-emitting unit to be the same as the polarity of the second end of the second light-emitting unit, and the polarity of the second end of the first light-emitting unit to be the same as the polarity of the first end of the second light-emitting unit, the light-emitting element emits light in both the positive and negative half-cycles of the alternating current, and there is no need to set a rectifier circuit, which reduces the volume of the circuit in the light-emitting device and reduces the cost of the light-emitting device. In addition, at least one first light-emitting unit and at least one second light-emitting unit are arranged alternately, so that the light-emitting area of ​​the light-emitting device is evenly distributed in the positive and negative half-cycles of the alternating current, which is conducive to improving the lighting effect. Moreover, by setting a current limiting module, overcurrent or overvoltage faults in the circuit are avoided, and the normal lighting of the light-emitting module can be ensured. There is no need to set a constant current power supply chip, which further reduces the cost of the light-emitting device.

[0046] Optionally, the light emitting module 100 is an integrated light emitting chip, or the first light emitting element D1 in the light emitting module 100 is a discrete element, and the second light emitting element D2 in the light emitting module 100 is a discrete element.

[0047] Specifically, in one embodiment, the light-emitting module 100 can be an integrated light-emitting chip, which reduces the size of the light-emitting device. In another embodiment, the first light-emitting element D1 in the light-emitting module 100 is a discrete element, and the second light-emitting element D2 in the light-emitting module 100 is a discrete element, which can facilitate manufacturing.

[0048] In one embodiment, Figure 2 This is a schematic diagram of the structure of a light emitting module provided by an embodiment of the present invention. Figure 2 The light emitting module 100 is an integrated light emitting chip, and further includes a substrate 101, a first conductive connection portion 102 and a second conductive connection portion 103;

[0049] The first light emitting unit 110 and the second light emitting unit 120 are located on the substrate 101;

[0050] The plurality of first light emitting elements D1 in the first light emitting unit 110 are connected in series via the first conductive connection portion 102 , and the plurality of second light emitting elements D2 in the second light emitting unit 120 are connected in series via the second conductive connection portion 103 .

[0051] The light emitting module 100 is an integrated light emitting chip. A plurality of light emitting modules 100 can be formed on a wafer (substrate). The light emitting modules 100 are cut out from the wafer and connected to the current limiting module 200 and the second power port P2.

[0052] Specifically, the substrate 101 provides support, protection, and cushioning. The first light-emitting element D1 and the second light-emitting element D2 can be fabricated on the substrate 101, and the first conductive connection portion 102 and the second conductive connection portion 103 can also be fabricated. This allows for the connection of multiple first light-emitting elements D1 and multiple second light-emitting elements D2 in series when fabricating the light-emitting module 100. This improves the integration of the light-emitting module 100, making the light-emitting module 100 smaller and thus reducing the size of the light-emitting device. Furthermore, after the light-emitting elements are fabricated, there is no need to connect them with wires.

[0053] On the basis of the above technical solutions, Figure 3 This is a schematic diagram of the circuit structure of another light emitting device provided by the embodiment of the present utility model. Figure 3 , the light emitting device includes a plurality of light emitting modules 100;

[0054] A plurality of light emitting modules 100 are connected in series or in parallel;

[0055] Or, as Figure 3 As shown, a part of the light-emitting modules 100 are connected in series to form a first light-emitting group 1 , and another part of the light-emitting modules 100 are connected in series to form a second light-emitting group 2 . The first light-emitting group 1 and the second light-emitting group 2 are connected in parallel.

[0056] Specifically, by configuring the light-emitting module 100 as an integrated chip and providing multiple light-emitting modules 100, the number of light-emitting elements can be increased while reducing the size of the light-emitting device. Furthermore, different light-emitting modules 100 can be appropriately spaced apart, which facilitates heat dissipation and reduces the operating temperature of the light-emitting device, thereby improving the luminous efficiency of the light-emitting device. Furthermore, providing multiple light-emitting modules 100 can increase the luminous intensity of the light-emitting device, thereby enhancing the user experience.

[0057] When the light-emitting device includes a plurality of light-emitting modules 100 , the plurality of light-emitting modules 100 may be arranged on a chip carrier.

[0058] In another embodiment, Figure 4 This is a schematic diagram of the structure of a light emitting module provided by an embodiment of the present invention. Figure 4 , the first light-emitting element D1 in the light-emitting module 100 is a discrete element, and the second light-emitting element D2 in the light-emitting module 100 is a discrete element;

[0059] The light emitting module 100 further includes a chip carrier 104 , a first connecting lead 105 and a second connecting lead 106 ;

[0060] The first light-emitting element D1 and the second light-emitting element D2 are located on the chip carrier 104 . The multiple first light-emitting elements D1 in the first light-emitting unit 110 are connected in series via the first connecting lead 105 . The multiple second light-emitting elements D2 in the second light-emitting unit 120 are connected in series via the second connecting lead 106 .

[0061] When the first light emitting element D1 and the second light emitting element D2 are discrete elements, multiple light emitting elements may be generated on a wafer, cut from the wafer to form discrete elements, and then the discrete elements may be attached to the chip carrier 104 .

[0062] Specifically, when the first light-emitting element D1 and the second light-emitting element D2 are discrete elements, multiple first light-emitting elements D1 and multiple second light-emitting elements D2 can be mounted on the chip carrier 104, and then the multiple first light-emitting elements D1 in the first light-emitting unit 110 can be connected through the first connecting lead 105, and the multiple second light-emitting elements D2 in the second light-emitting unit 120 can be connected through the second connecting lead 106.

[0063] Optionally, the chip carrier 104 is a transparent carrier. This prevents the chip carrier 104 from blocking the light from the first light-emitting element D1 and the second light-emitting element D2, allowing the light-emitting device to emit better light. For example, the material of the chip carrier 104 may include glass, sapphire, or silicon carbide (SiC), although this embodiment is not limited thereto.

[0064] In addition, the chip carrier 104 may be made of a material with good thermal conductivity to improve heat dissipation and facilitate heat dissipation of the light emitting device. For example, the chip carrier 104 may be made of silicon carbide (SiC), aluminum, or copper, etc., which is not limited in this embodiment.

[0065] On the basis of the above technical solutions, optionally, an alternating current is connected between the first power port P1 and the second power port P2; the alternating current is provided by an external power supply device or a mains supply.

[0066] Specifically, the mains electricity and external power supply can provide alternating current (AC), for example, 220V AC, to the light-emitting device. By setting the polarity of the first end of the first light-emitting unit 110 to be the same as the polarity of the second end of the second light-emitting unit 120, and the polarity of the second end of the first light-emitting unit 110 to be the same as the polarity of the first end of the second light-emitting unit 120, the first light-emitting element D1 in the first light-emitting unit 110 emits light during the positive half-cycle of the AC power, and the second light-emitting element D2 in the second light-emitting unit 120 emits light during the negative half-cycle of the AC power. Alternatively, the second light-emitting element D2 in the second light-emitting unit 120 emits light during the positive half-cycle of the AC power, and the first light-emitting element D1 in the first light-emitting unit 110 emits light during the negative half-cycle of the AC power. In this way, the light-emitting elements emit light during both the positive and negative half-cycles of the AC power.

[0067] On the basis of the above technical solutions, Figure 5 This is a schematic diagram of the circuit structure of another light emitting device provided by the embodiment of the present utility model. Figure 5 The current limiting module 200 includes a current limiting resistor R1 , which is connected between the first power port P1 and the first end of the first light-emitting unit 110 .

[0068] Specifically, by providing a current-limiting resistor R1, the current-limiting resistor R1 can prevent overvoltage or overcurrent in the first light-emitting element D1 and the second light-emitting element D2, thereby protecting the first light-emitting element D1 and the second light-emitting element D2, extending the lifespan of the first light-emitting element D1 and the second light-emitting element D2, and ensuring the stability and reliability of the light-emitting device. Furthermore, there is no need to provide a constant current power supply chip, allowing the light-emitting device to be directly connected to AC power such as the mains, thereby reducing the cost of the light-emitting device.

[0069] The present invention also provides a light-emitting device, which includes the light-emitting device provided in any embodiment of the present invention. The light-emitting device may also include a lampshade, which can protect the light-emitting device, and may also include other components, which are not limited in this embodiment. The light-emitting device may be a lamp such as a chandelier or a wall lamp, which is not limited in this embodiment. Because the light-emitting device includes the light-emitting device provided in any embodiment of the present invention, the light-emitting device of this embodiment has the same beneficial effects as the light-emitting device provided in any embodiment of the present invention, and will not be further described here.

[0070] Optionally, the light emitting device is a G9 light emitting device. That is, the light emitting device is a G9 lamp. In other embodiments, the light emitting device may also be other types of lamps, which is not limited in this embodiment.

[0071] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A light emitting device, characterized in that: include: at least one light-emitting module and a current-limiting module; The light-emitting module includes a plurality of first light-emitting units and a plurality of second light-emitting units, wherein a first end of the first light-emitting unit is connected to a first power port through the current limiting module, and a second end of the first light-emitting unit is connected to a second power port, and the first light-emitting unit includes a plurality of first light-emitting elements connected in series; The first end of the second light-emitting unit is connected to the first power port through the current limiting module, and the second end of the second light-emitting unit is connected to the second power port. The second light-emitting unit includes a plurality of second light-emitting elements connected in series. The first end of the first light-emitting unit and the second end of the second light-emitting unit have the same polarity, and the second end of the first light-emitting unit and the first end of the second light-emitting unit have the same polarity. At least one of the first light-emitting units and at least one of the second light-emitting units are arranged alternately.

2. The light emitting device according to claim 1, wherein The light-emitting module is an integrated light-emitting chip, or the first light-emitting element in the light-emitting module is a discrete element, and the second light-emitting element in the light-emitting module is a discrete element.

3. The light emitting device according to claim 2, characterized in that The light-emitting module is an integrated light-emitting chip, and further comprises a substrate, a first conductive connection portion and a second conductive connection portion; The first light emitting unit and the second light emitting unit are located on the substrate; The plurality of first light-emitting elements in the first light-emitting unit are connected in series via the first conductive connection portion, and the plurality of second light-emitting elements in the second light-emitting unit are connected in series via the second conductive connection portion.

4. The light emitting device according to claim 3, characterized in that The light emitting device includes a plurality of light emitting modules; A plurality of the light emitting modules are connected in series or in parallel; Alternatively, a portion of the light-emitting modules are connected in series to form a first light-emitting group, and another portion of the light-emitting modules are connected in series to form a second light-emitting group, and the first light-emitting group and the second light-emitting group are connected in parallel.

5. The light emitting device according to claim 2, characterized in that The first light-emitting element in the light-emitting module is a discrete element, and the second light-emitting element in the light-emitting module is a discrete element; The light emitting module further includes a chip carrier, a first connecting lead and a second connecting lead; The first light-emitting element and the second light-emitting element are located on a patch carrier, the multiple first light-emitting elements in the first light-emitting unit are connected in series through the first connecting lead, and the multiple second light-emitting elements in the second light-emitting unit are connected in series through the second connecting lead.

6. The light emitting device according to claim 5, characterized in that The patch carrier is a transparent carrier.

7. The light emitting device according to claim 1, characterized in that Alternating current is connected between the first power port and the second power port; the alternating current is provided by an external power supply device or mains electricity.

8. The light emitting device according to claim 1, wherein The current limiting module includes a current limiting resistor connected between the first power port and the first end of the first light emitting unit.

9. A light emitting device, characterized in that: The light-emitting device comprises the light-emitting device according to any one of claims 1 to 8.

10. The light emitting device according to claim 9, characterized in that The light emitting device is a G9 light emitting device.

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