CN217470327U - Light emitting device - Google Patents
Light emitting device Download PDFInfo
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- CN217470327U CN217470327U CN202123045814.1U CN202123045814U CN217470327U CN 217470327 U CN217470327 U CN 217470327U CN 202123045814 U CN202123045814 U CN 202123045814U CN 217470327 U CN217470327 U CN 217470327U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model relates to a luminous electronic components technical field discloses a light emitting device, can realize under the condition of illumination, reduces holistic consumption in step. The utility model comprises a power conversion module, a control module, a driving luminotron and a sampling module; the power supply end of the control module is electrically connected with the output end of the power supply conversion module; the driving end of the driving light-emitting tube is electrically connected with the output end of the control module, and the input end of the driving light-emitting tube is electrically connected with the output end of the power supply conversion module; the first end of the sampling module is electrically connected with the first input end of the control module and the output end of the driving light-emitting tube respectively, and the second end of the sampling module is grounded. The utility model discloses make drive luminotron replace traditional drive tube, compare with traditional lighting circuit then can make most heat loss convert the photon and give out light, can reduce energy loss effectively, and then improved energy conversion efficiency, reduce cost effectively.
Description
Technical Field
The utility model relates to a luminous electronic components technical field, especially a light-emitting device.
Background
The LED lighting circuit on the market at present has complex structure and low efficiency, most of the LED lighting circuits at present supply power to the LED by using constant current of a switching circuit, so the related circuits are complex and have higher price, or the LED is supplied power by adding a linear constant current IC, but because the linear constant current chip limits the current, a large amount of voltage drop can be generated, a large amount of power consumption is consumed, and heat is generated.
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 light emitting device can realize under the condition of illumination, reduces holistic consumption in step.
The light-emitting device comprises a power conversion module, a control module, a driving light-emitting tube and a sampling module; the power end of the control module is electrically connected with the output end of the power conversion module; the driving end of the driving light-emitting tube is electrically connected with the output end of the control module, and the input end of the driving light-emitting tube is electrically connected with the output end of the power supply conversion module; the first end of the sampling module is electrically connected with the first input end of the control module and the output end of the driving light-emitting tube respectively, and the second end of the sampling module is grounded.
According to the utility model discloses light emitting device has following beneficial effect at least: the cooperation power conversion module and control module can realize that the drive luminotron gives out light, makes the drive luminotron replace traditional drive tube, compares with traditional luminescent circuit and then can make most heat loss convert the photon into and give out light, can reduce energy loss effectively, and then has improved energy conversion efficiency, can reduce cost effectively.
According to some embodiments of the utility model, power conversion module's output with it has LED light emitting module still to go back electric connection between the input of drive luminotron.
According to some embodiments of the present invention, the power conversion module comprises a rectifying unit and a first filtering unit, wherein a first input end and a second input end of the rectifying unit are electrically connected to the alternating current respectively, and a positive output end of the rectifying unit is electrically connected to a power end of the control module and an input end of the driving light emitting tube respectively; the input end of the first filtering unit is electrically connected with the output end of the rectifying unit, and the output end of the first filtering unit is grounded.
According to some embodiments of the utility model, the drive luminotron is emitting triode Q1, emitting triode Q1's base with control module's output electric connection, emitting triode Q1's collecting electrode with power conversion module's output electric connection, emitting triode Q1's projecting pole with sampling module's first end electric connection.
According to some embodiments of the utility model, the drive luminotron is luminous field effect transistor Q2, luminous field effect transistor Q2's grid with control module's output electric connection, luminous field effect transistor Q2's drain electrode with power conversion module's output electric connection, luminous field effect transistor Q2's source with sampling module's first end electric connection.
According to some embodiments of the present invention, the control module comprises an operational amplifier chip U1, an operational amplifier power supply unit and an operational amplifier reference source unit; the output end of the operational amplifier chip U1 is electrically connected with the driving end of the driving light-emitting tube, and the reverse input end of the operational amplifier chip U1 is electrically connected with the first end of the sampling module; the output end of the operational amplifier power supply unit is electrically connected with the power end of the operational amplifier chip, the input end of the operational amplifier power supply unit is electrically connected with the output end of the power conversion module, the input end of the operational amplifier reference source unit is electrically connected with the input end of the operational amplifier power supply unit, and the output end of the operational amplifier reference source unit is electrically connected with the positive input end of the operational amplifier chip U1.
According to the utility model discloses a some embodiments, control module still includes second filtering unit, the input of second filtering unit with power supply unit's output electric connection is put to fortune, second filtering unit's output ground connection.
According to the utility model discloses a some embodiments, control module still includes the pressure regulating unit, the input of pressure regulating unit with power conversion module's output electric connection, the first output of pressure regulating unit with chip U1's reverse input electric connection is put to the fortune, the second output of pressure regulating unit with sampling module's first end electric connection.
According to some embodiments of the invention, the voltage regulating unit comprises a first regulating resistor and a second regulating resistor; a first end of the first adjusting resistor is electrically connected with an output end of the power conversion module, and a second end of the first adjusting resistor is electrically connected with a reverse input end of the operational amplifier chip U1; the first end of the second adjusting resistor is electrically connected with the second end of the first adjusting resistor, and the second end of the second adjusting resistor is electrically connected with the first end of the sampling module.
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 circuit diagram of a light emitting device according to a first embodiment of the present invention;
fig. 2 is one of schematic circuit hardware connection structures of the light emitting device shown in fig. 1;
fig. 3 is a second schematic diagram of a circuit hardware connection structure of the light emitting device shown in fig. 1;
fig. 4 is a third schematic diagram of a circuit hardware connection structure of the light emitting device shown in fig. 1;
fig. 5 is a third schematic diagram of a circuit hardware connection structure of the light emitting device shown in fig. 1;
fig. 6 is a schematic circuit diagram of a light emitting device according to a second embodiment of the present invention;
fig. 7 is one of schematic circuit hardware connection structures of the light emitting device shown in fig. 6;
fig. 8 is a second schematic diagram of the circuit hardware connection structure of the light emitting device shown in fig. 6.
Reference numerals: the circuit comprises a power conversion module 100, a rectification unit 110, a first filtering unit 120, a control module 200, an operational amplifier power supply unit 210, an operational amplifier reference source unit 220, a second filtering unit 230, a voltage regulating unit 240, a driving light emitting tube 300, a sampling module 400, an LED light emitting module 500, a circuit substrate 600 and a chip carrier 700.
Detailed Description
This section will describe in detail the embodiments of the present invention, the preferred embodiments of which are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can visually and vividly understand each technical feature and the whole technical solution of the present invention, but it cannot be understood as a limitation to the scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of 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 thus, 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. The description of first, second, etc. if any, is for the purpose of distinguishing between technical features and not intended to indicate or imply relative importance or implicitly indicate a number of indicated technical features or implicitly indicate a precedence relationship of indicated technical features.
In the description of the present invention, unless there is an explicit limitation, words such as setting, installation, electric connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in combination with the specific content of the technical solution.
Referring to fig. 1, a light emitting device according to an embodiment of the present invention includes a power conversion module 100, a control module 200, a driving light emitting tube 300, and a sampling module 400; the power end of the control module 200 is electrically connected with the output end of the power conversion module 100; the driving end of the driving light emitting tube 300 is electrically connected with the output end of the control module 200, and the input end of the driving light emitting tube 300 is electrically connected with the output end of the power conversion module 100; the first end of the sampling module 400 is electrically connected to the first input end of the control module 200 and the output end of the driving light emitting tube 300, respectively, and the second end of the sampling module 400 is grounded.
The power conversion module 100 is used for converting a power supply, and may have a function of boosting or reducing voltage between direct currents, or converting alternating current into direct current and performing any combination of boosting and reducing voltage, and the corresponding circuit belongs to a conventional technical means of a person skilled in the art, so that a specific circuit structure of the power conversion module 100 may be set according to actual needs, which is not described in detail here. In this embodiment, the power conversion module 100 includes a rectifying unit 110 and a first filtering unit 120, a first input end and a second input end of the rectifying unit 110 are respectively electrically connected to the alternating current, and an anode output end of the rectifying unit 110 is respectively electrically connected to a power supply end of the control module 200 and an input end of the driving light emitting tube 300; the input end of the first filtering unit is electrically connected to the output end of the rectifying unit 110, and the output end of the first filtering unit 120 is grounded. As shown in fig. 2 to 5, the rectifying unit 110 adopts a rectifying bridge structure to achieve ac-dc conversion, and the first filtering unit 120 adopts a capacitor C1 to filter ripples so as to stabilize the voltage of the output of the rectifying unit 110.
As shown in fig. 2 to 5, the sampling module 400 employs a sampling resistor R4, and the control module 200 can adjust the current at the output end according to the voltage drop change of the sampling resistor R4 by collecting the voltage of the sampling resistor R4, so as to change the current for driving the light emitting tube 300.
According to the utility model discloses light emitting device, through so setting up, can reach some effects as follows at least, control module 200 then is used for driving drive luminotron 300, with the break-make state of control drive luminotron 300, and then realize the illumination, cooperation power conversion module 100 and control module 200, can realize that drive luminotron 300 shines, make drive luminotron 300 replace traditional drive tube, compare with traditional lighting circuit then can make most heat loss convert into the photon and shine, energy loss can be reduced effectively, and then energy conversion efficiency has been improved, can reduce cost effectively.
Referring to fig. 2 and 4, in some embodiments of the present invention, the driving light emitting tube 300 is a light emitting diode Q1, the base of the light emitting diode Q1 is electrically connected to the output of the control module 200, the collector of the light emitting diode Q1 is electrically connected to the output of the power conversion module 100, and the emitter of the light emitting diode Q1 is electrically connected to the first end of the sampling module 400.
Referring to fig. 3 and 5, in some embodiments of the present invention, the driving light emitting tube 300 is a light emitting fet Q2, a gate of the light emitting fet Q2 is electrically connected to an output of the control module 200, a drain of the light emitting fet Q2 is electrically connected to an output of the power conversion module 100, and a source of the light emitting fet Q2 is electrically connected to the first end of the sampling module 400.
The light emitting transistor Q1 or the light emitting field effect transistor Q2 is a driving light emitting tube 300 made of gallium nitride (GaN) and indium gallium nitride (InGaN), most of energy is converted into photons to emit light in a conducting state, so that the heat loss rate is reduced, and the electricity consumption cost of illumination can be effectively reduced under the condition of adopting an illumination device with the same brightness.
It should be noted that, the driving light emitting tube 300 made of gallium nitride (GaN) and indium gallium nitride (InGaN) materials lights up blue light when emitting light, so that in a specific application process, light of a required color can be lighted up by matching with fluorescent powder of a corresponding color.
Referring to fig. 2 to 4, in some embodiments of the present invention, the control module 200 includes an operational amplifier chip U1, an operational amplifier power supply unit 210, and an operational amplifier reference source unit 220; the output end of the operational amplifier chip U1 is electrically connected with the driving end of the driving light-emitting tube 300, and the reverse input end of the operational amplifier chip U1 is electrically connected with the first end of the sampling module 400; the output end of the operational amplifier power supply unit 210 is electrically connected to the power end of the operational amplifier chip, the input end of the operational amplifier power supply unit 210 and the output end of the power conversion module 100 are electrically connected to the input end of the operational amplifier reference source unit 220 and the input end of the operational amplifier power supply unit 210, and the output end of the operational amplifier reference source unit 220 is electrically connected to the positive input end of the operational amplifier chip U1.
Referring to fig. 2 and fig. 3, in this embodiment, the operational amplifier power supply unit 210 includes a resistor R1 and a voltage regulator D2, a first end of the resistor R1 is electrically connected to the output end of the power conversion module 100, a second end of the resistor R1 is electrically connected to the power supply end of the operational amplifier chip U1 and the cathode of the voltage regulator D2, an anode of the voltage regulator D2 is grounded, and a suitable voltage can be provided for the operational amplifier chip U1 by voltage division of the resistor R1, the voltage regulator D2 can protect the chip U1, and when the voltage is too high, the voltage regulator D2 is broken down, so that short circuit with the ground can be realized, and the chip U1 can be prevented from being damaged by too high voltage; the operational amplifier reference source unit 220 includes a resistor R2 and a resistor R3, wherein a first end of the resistor R2 is electrically connected to a second end of the resistor R1, a second end of the resistor R2 is electrically connected to a positive input terminal of the chip U1 and a first end of the resistor R3, and a second end of the resistor R3 is grounded, and according to the output voltage of the connected power conversion module 100 and working parameters of the chip U1 and the driving light emitting tube 300, a person skilled in the art can select a resistor with a resistance value of an appropriate parameter as the resistor R2 and the resistor R3, wherein the resistor R2 and the resistor R3 can also adopt an adjusting resistor, and in an actual application process, the resistance value can be directly adjusted to be adjusted to a working range required by the operational amplifier chip U1 and the driving light emitting tube 300.
Referring to fig. 2 and 3, in this embodiment, the first end of the sampling resistor R4 is directly connected to the reverse input end of the operational amplifier chip U1, and in the actual working process, when the current driving the light emitting tube 300 increases, the voltage of the sampling resistor R4 will increase synchronously, the voltage of the reverse input end of the operational amplifier chip U1 increases, and the voltage of the output end of the operational amplifier chip U1 decreases, so the current driving the light emitting tube 300 will decrease; when the current for driving the light-emitting tube 300 is reduced, the voltage of the sampling resistor R4 is synchronously reduced, the voltage of the reverse input end of the operational amplifier chip U1 is reduced, the voltage of the output end of the operational amplifier chip U1 is increased, and the current for driving the light-emitting tube 300 is increased; therefore, the operational amplifier chip U1 and the sampling resistor R4 can be used to operate the light emitting tube 300 at a stable current.
Referring to fig. 4 and 5, in some embodiments of the present invention, the control module 200 further includes a second filtering unit 230, an input end of the second filtering unit 230 is electrically connected to an output end of the operational amplifier power supply unit 210, and an output end of the second filtering unit 230 is grounded. The second filtering unit 230 is added to filter the voltage output by the operational amplifier power supply unit 210, so as to provide a stable voltage for the operational amplifier reference source unit 220 and the operational amplifier chip U1, and meanwhile, it is ensured that the operational amplifier reference source unit 220 provides a stable reference source voltage for the operational amplifier chip U1.
Referring to fig. 4 and 5, in some embodiments of the present invention, the control module 200 further includes a voltage regulating unit 240, an input end of the voltage regulating unit 240 is electrically connected to an output end of the power conversion module 100, a first output end of the voltage regulating unit 240 is electrically connected to a reverse input end of the operational amplifier chip U1, and a second output end of the voltage regulating unit 240 is electrically connected to a first end of the sampling module 400. The cooperation pressure regulating unit 240 then can make the utility model discloses be applied to different voltage value within ranges, improved the scope of suitability, cooperation pressure regulating unit 240 then can provide stable voltage for drive luminotron 300.
Referring to fig. 4 and 5, in some embodiments of the present invention, the voltage regulating unit 240 includes a first regulating resistor and a second regulating resistor; a first end of the first adjusting resistor is electrically connected with the output end of the power conversion module 100, and a second end of the first adjusting resistor is electrically connected with the reverse input end of the operational amplifier chip U1; the first end of the second adjusting resistor is electrically connected to the second end of the first adjusting resistor, and the second end of the second adjusting resistor is electrically connected to the first end of the sampling resistor R4, in this embodiment, the first end of the sampling resistor R4 is not connected to the inverting input terminal of the operational amplifier chip U1. In the practical application process, when the current on the sampling resistor R4 is increased, the voltage of the sampling resistor R4 is increased and fed back to the reverse input end of the operational amplifier chip U1 through the resistor R6, the forward input end of the operational amplifier chip U1 is unchanged, so that the voltage of the output end of the operational amplifier chip U1 is reduced, and the output current of the driving light-emitting tube 300 is reduced; when the current of the sampling resistor R4 is reduced, the voltage is synchronously reduced and is also fed back to the reverse input end of the operational amplifier chip U1 through the resistor R6, the forward input end of the operational amplifier chip U1 is unchanged, and the voltage of the output end of the operational amplifier chip U1 is increased, so that the output current of the driving light-emitting tube 300 is increased, and therefore, a constant-current closed-loop circuit can be formed by matching the sampling resistor R4R4 and the resistor R6, so that the driving light-emitting tube 300 can work under stable current; in addition, the resistor R5 is matched to control the driving light-emitting tube 300 to work under stable power, when the input voltage of the power conversion module 100 increases, the voltage at the first end of the corresponding resistor R6 increases, which will cause the voltage at the output end of the operational amplifier chip U1 to decrease, which will decrease the voltage of the driving light-emitting tube 300; when the input voltage of the power conversion module 100 decreases, the voltage at the first end of the corresponding resistor R6 decreases, which may cause the voltage at the output end of the operational amplifier chip U1 to increase, and may cause the voltage of the driving light emitting tube 300 to increase and recover to the original value, thereby ensuring that the driving light emitting tube 300 may operate at a stable voltage value.
Referring to fig. 6, in some embodiments of the present invention, an LED light emitting module 500 is further electrically connected between the output end of the power conversion module 100 and the input end of the driving light emitting tube 300. The LED lighting module 500 is added to increase the illumination brightness, wherein the LED lighting module 500 has at least one LED, and when two or more LEDs are used, the LED lighting module can be connected in series, in parallel, or in series and parallel, and the specific connection mode can be connected according to the magnitude of the working voltage or the actual requirement, in this embodiment, as shown in fig. 7 and 8, the LED lighting module 500 uses a plurality of LEDs connected in series, and then connected between the output end of the power conversion module 100 and the input end of the driving light emitting tube 300. When the LED light emitting module 500 is added, the driving light emitting tube 300 can synchronously function as a driving tube to realize that the LED light emitting module 500 can be powered on or powered off, and the driving light emitting tube 300 can also synchronously emit light, so that energy loss can be effectively reduced, and energy is prevented from being converted into heat only.
Referring to fig. 7, in some embodiments of the present invention, the LED module and the driving light emitting tube 300 can be directly welded on the same circuit substrate 600, then in the practical application process, the required power conversion module 100, the control module 200 and the sampling module 400 can be selected, and then directly connected with the port on the circuit substrate 600, so that the user can modify the external parameters in the application process, and the convenience is improved.
Referring to fig. 8, in some embodiments of the present invention, the power conversion module 100, the control module 200, the LED module and the driving light emitting tube 300 can be directly welded on the same chip carrier 700, wherein, the sampling resistor R4 is external, the first filtering unit 120 can be synchronously disposed on the chip carrier 700, or the outside can be separately disposed according to the requirement, when the product produced is determined to be applied to the fixed voltage, the structure of the corresponding chip carrier 700 in batch production can be produced, in the practical application process, the user only needs to directly connect the power supply and connect the appropriate sampling resistor R4, the convenience of the user can be improved, the difficulty of wiring is reduced
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A light emitting device, comprising:
a power conversion module;
the power supply end of the control module is electrically connected with the output end of the power supply conversion module;
the driving end of the driving light-emitting tube is electrically connected with the output end of the control module, and the input end of the driving light-emitting tube is electrically connected with the output end of the power supply conversion module;
the first end of the sampling module is respectively electrically connected with the first input end of the control module and the output end of the driving light-emitting tube, and the second end of the sampling module is grounded.
2. The light-emitting device according to claim 1, wherein an LED light-emitting module is further electrically connected between the output end of the power conversion module and the input end of the driving light-emitting tube.
3. The light emitting device of claim 1, wherein the power conversion module comprises:
the first input end and the second input end of the rectifying unit are respectively and electrically connected with alternating current, and the positive output end of the rectifying unit is respectively and electrically connected with the power supply end of the control module and the input end of the driving light-emitting tube;
and the unit input end of the first filtering unit is electrically connected with the output end of the rectifying unit, and the output end of the first filtering unit is grounded.
4. The light emitting device as claimed in claim 1, wherein the driving light emitting diode is a light emitting diode Q1, a base of the light emitting diode Q1 is electrically connected to the output terminal of the control module, a collector of the light emitting diode Q1 is electrically connected to the output terminal of the power conversion module, and an emitter of the light emitting diode Q1 is electrically connected to the first terminal of the sampling module.
5. The light emitting device of claim 1, wherein the driving light emitting tube is a light emitting fet Q2, a gate of the light emitting fet Q2 is electrically connected to the output terminal of the control module, a drain of the light emitting fet Q2 is electrically connected to the output terminal of the power conversion module, and a source of the light emitting fet Q2 is electrically connected to the first terminal of the sampling module.
6. The light emitting device of claim 1, wherein the control module comprises:
an output end of the operational amplifier chip U1 is electrically connected with a driving end of the driving light-emitting tube, and an inverted input end of the operational amplifier chip U1 is electrically connected with a first end of the sampling module;
the output end of the operational amplifier power supply unit is electrically connected with the power end of the operational amplifier chip, and the input end of the operational amplifier power supply unit is electrically connected with the output end of the power conversion module;
the input end of the operational amplifier reference source unit is electrically connected with the input end of the operational amplifier power supply unit, and the output end of the operational amplifier reference source unit is electrically connected with the positive input end of the operational amplifier chip U1.
7. The light-emitting device according to claim 6, wherein: the control module further comprises a second filtering unit, the input end of the second filtering unit is electrically connected with the output end of the operational amplifier power supply unit, and the output end of the second filtering unit is grounded.
8. The light-emitting device according to claim 6, wherein: the control module further comprises a voltage regulating unit, the input end of the voltage regulating unit is electrically connected with the output end of the power supply conversion module, the first output end of the voltage regulating unit is electrically connected with the reverse input end of the operational amplifier chip U1, and the second output end of the voltage regulating unit is electrically connected with the first end of the sampling module.
9. The light emitting device according to claim 8, wherein the voltage regulating unit comprises:
a first end of the first adjusting resistor is electrically connected with the output end of the power conversion module, and a second end of the first adjusting resistor is electrically connected with the reverse input end of the operational amplifier chip U1;
and the first end of the second adjusting resistor is electrically connected with the second end of the first adjusting resistor, and the second end of the second adjusting resistor is electrically connected with the first end of the sampling module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123045814.1U CN217470327U (en) | 2021-12-06 | 2021-12-06 | Light emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123045814.1U CN217470327U (en) | 2021-12-06 | 2021-12-06 | Light emitting device |
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| Publication Number | Publication Date |
|---|---|
| CN217470327U true CN217470327U (en) | 2022-09-20 |
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| CN202123045814.1U Active CN217470327U (en) | 2021-12-06 | 2021-12-06 | Light emitting device |
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| CN (1) | CN217470327U (en) |
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2021
- 2021-12-06 CN CN202123045814.1U patent/CN217470327U/en active Active
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