CN214046063U - LED light emitting module and LED lamp that can concatenate - Google Patents
LED light emitting module and LED lamp that can concatenate Download PDFInfo
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- CN214046063U CN214046063U CN202023036402.7U CN202023036402U CN214046063U CN 214046063 U CN214046063 U CN 214046063U CN 202023036402 U CN202023036402 U CN 202023036402U CN 214046063 U CN214046063 U CN 214046063U
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Abstract
The utility model provides a LED light emitting module that can concatenate, include: the LED module comprises a module body, an LED light-emitting circuit and a switch circuit, wherein the LED light-emitting circuit and the switch circuit are arranged in the module body; one end of the module body is an input end, and the other end of the module body is an output end; the switch circuit is provided with a common end and a plurality of connecting ends; when the switch circuit is conducted, each connecting end is conducted with the public end; when the switch circuit is cut off, the connection terminals and the common terminal are cut off, and the connection terminals are kept cut off. The utility model provides a LED lamp, which comprises a driving power supply and at least one LED light-emitting module which can be connected in series; and the output end of the driving power supply is connected with the input end of the first LED light-emitting module.
Description
Technical Field
The utility model relates to a LED light emitting module especially involves LED light emitting module that can concatenate
Background
The LED lamp with an external driving power source is popular among users because the LED light emitting module can be designed to be a relatively slim profile.
The LED lamp formed by the LED light-emitting modules which can be connected in series is driven by one driving power supply, and the number of the LED light-emitting modules is variable, so that the LED lamp is more suitable for actual lighting requirements. The LED light-emitting modules which can be connected in series are of double-end structures, wherein one end of each LED light-emitting module is an input end, and the other end of each LED light-emitting module is an output end. The output end of the driving power supply is connected with the input end of one LED light-emitting module which can be connected in series, if the number of the LED light-emitting modules needs to be increased, the LED light-emitting modules are connected according to a method that the input end of one LED light-emitting module which can be connected in series to be connected is connected with the output end of the last LED light-emitting module which can be connected in series to be connected with the LED lamp. When the driving power supply outputs voltage or current, the connected LED light-emitting modules all emit light, and when the driving power supply does not output voltage or current, the LED light-emitting modules do not emit light.
The LED lamp capable of being connected with the LED light-emitting module in series in the prior art is adopted, the driving power supply adopts a constant voltage output mode, the main circuit of the LED light-emitting module capable of being connected in series comprises a constant current circuit and an LED light-emitting circuit, and the constant current circuit converts the connected voltage into constant current to drive the LED light-emitting circuit to emit light. In order to make the serially connectable LED light emitting module have a smaller cross-sectional area, the constant current circuit often uses a linear constant current circuit or a current limiting resistor.
Because a certain working voltage difference is inevitably generated between the LED light-emitting circuits of the light-emitting modules, and because the number of the series output is increased, the voltage drop on the power line is increased, and the voltage connected to the LED light-emitting module connected to the rear is lower. In order to ensure that the brightness of the emitted light is consistent, namely the current flowing through each LED light-emitting circuit is consistent, a certain difference value is required between the voltage output by the driving power supply and the working voltage of the LED light-emitting circuit, so that the luminous efficiency of the LED light-emitting module capable of being connected in series is reduced while the luminous uniformity is ensured.
The LED light-emitting module driven by voltage and capable of being connected in series cannot change the current by changing the access voltage, namely the brightness of the LED light-emitting module cannot be adjusted; if the voltage controlled by the PWM method is used to adjust the brightness, it cannot be used because radio interference is easily generated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a LED light emitting module that can concatenate is provided, and is luminous under the constant current drive of drive power supply output, both can reach the luminous homogeneity of each module and also can improve the luminous efficiency of the LED light emitting module that can concatenate to can adjust LED light emitting module's luminous intensity through the output current size of adjusting drive power supply.
In order to solve the technical problem, the utility model provides a LED light emitting module that can concatenate, include: the LED module comprises a module body, an LED light-emitting circuit and a switch circuit, wherein the LED light-emitting circuit and the switch circuit are arranged in the module body; one end of the module body is an input end, and the other end of the module body is an output end;
the switch circuit is provided with a common end and a plurality of connecting ends; when the switch circuit is conducted, each connecting end is conducted with the public end; when the switch circuit is cut off, the connection terminals and the common terminal are cut off, and the connection terminals are kept cut off.
In a preferred embodiment: the module body is internally provided with n LED light-emitting circuits and a switch circuit, and the switch circuit is provided with a common end and n connecting ends;
the input end and the output end are respectively provided with n +1 electrodes, wherein the 0 th electrode of the input end and the 0 th electrode of the output end are connected to be used as a common electrode.
In a preferred embodiment: the common electrode of the input end is used as the anode of the access current, and other electrodes of the input end are accessed to the cathode of the access current;
the common end of the switch circuit is connected with the common electrode of the output end, the kth connecting end of the switch circuit, the positive electrode of the kth LED light-emitting circuit and the kth electrode of the output end are connected, the negative electrode of the kth LED light-emitting circuit is connected with the kth electrode of the input end, and 1< k < n.
In a preferred embodiment: the common electrode of the input end is used as the negative electrode of the access current, and other electrodes of the input end are accessed to the positive electrode of the access current;
the common end of the switch circuit is connected with the common electrode of the output end, the kth connecting end of the switch circuit, the negative electrode of the kth LED light-emitting circuit and the kth electrode of the output end are connected, the positive electrode of the kth LED light-emitting circuit is connected with the kth electrode of the input end, and 1< k < n.
In a preferred embodiment: the switch circuit is a toggle switch, one end of each toggle switch is respectively a connecting end of the switch circuit, and the other ends of the toggle switches are connected together to serve as a public end.
In a preferred embodiment: the input end is provided with a magnet, and the switching circuit adopts a magnetic control switching circuit.
In a preferred embodiment: the magnetically controllable switch circuit is a normally closed reed switch or a magnetically controlled electronic switch with a non-contact mode.
In a preferred embodiment: the magnetic control electronic switch comprises a magnetic sensing element, a first resistor, a second resistor, a first capacitor, a second capacitor, a voltage stabilizing diode and a unidirectional silicon controlled rectifier;
the anode of the unidirectional silicon controlled rectifier is connected with one end of the first resistor and is the anode of the magnetic control electronic switch; the other end of the first resistor is connected with the cathode of the voltage stabilizing diode and one end of the first capacitor, and the connecting end of the first resistor provides voltage for the magnetic sensing element. The gate pole of the unidirectional silicon controlled rectifier is connected with one end of a second resistor, one end of a second capacitor is connected, the cathode of the unidirectional silicon controlled rectifier is connected with the other end of the first capacitor, the other end of the second capacitor is connected with the other end of the second resistor, and the connecting end of the second resistor is the cathode of the magnetic control electronic switch.
The utility model also provides an LED lamp, which comprises a driving power supply and at least one LED light-emitting module which can be connected in series; and the output end of the driving power supply is connected with the input end of the first LED light-emitting module.
In a preferred embodiment: the input end of the second LED light-emitting module is connected with the output end … … of the first LED light-emitting module, and the input end of the first NLED light-emitting module is connected with the output end of the (N-1) LED light-emitting module;
and the switching circuit of the NLED light-emitting module is switched on, and the switching circuits of the rest LED light-emitting modules are switched off.
Drawings
Fig. 1 is a connection diagram of a tandem LED lighting module and a driver;
fig. 2A is a circuit connection diagram of the internal main body of the LED light-emitting module of the present invention when the common electrode is negative;
fig. 2B is a circuit connection diagram of the internal main body of the LED light-emitting module with the timing common electrode;
fig. 3A and fig. 3B are two connection structure diagrams of the single LED light-emitting circuit module according to the present invention;
fig. 4A is a connection structure diagram of the switch circuit when the common electrode of the multi-LED light-emitting circuit module of the present invention is negative;
fig. 4B is a connection structure diagram of the switch circuit with the timing of the common electrode of the multi-LED light-emitting circuit module according to the present invention;
FIG. 5A is a schematic circuit diagram of a magnetic switch employing a reed switch in a non-electrode contact switching manner;
fig. 5B is a schematic circuit diagram of a magnetic switch of a non-electrode contact switching type using a hall switch.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected," may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements.
Referring to fig. 1 to 5, the LED light-emitting modules that can be connected in series emit light under the driving of the constant current output by the driving power supply, so that the light-emitting uniformity of each module can be achieved, the light-emitting efficiency of the LED light-emitting modules that can be connected in series can be improved, and the light-emitting intensity of the LED light-emitting modules can be adjusted by adjusting the magnitude of the output current of the driving power supply. If the LED light-emitting module has a plurality of LED light-emitting circuits with color temperature or color, the light-emitting color and the light-emitting intensity of the LED light-emitting module which can be connected in series can be changed by respectively adjusting the current of each LED light-emitting circuit.
The LED light emitting module specifically includes: the LED module comprises a module body, and a plurality of LED light-emitting circuits and switch circuits which are arranged in the module body. The module body is of a double-end structure, one end of the module body is an input end, and the other end of the module body is an output end. Each LED light-emitting circuit is respectively provided with a positive electrode and a negative electrode, and the colors or color temperatures emitted when the LED light-emitting circuits are electrified are different.
The switch circuit is provided with a public end and a plurality of connecting ends, when the switch circuit is switched on, each connecting end is switched on with the public end, when the switch circuit is switched off, each connecting end is switched off with the public end, and each connecting end is mutually switched off.
Assuming that n is the number of the LED lighting circuits and the number of the connection terminals of the switch circuit in the LED lighting module, k represents the number of any one of the LED lighting circuits or the number of the connection terminals of the switch circuit, and k is greater than or equal to 1 and less than or equal to n. Then the input and output terminals of the serially connectable LED lighting module each have n +1 electrodes, the electrodes of the input and output terminals are numbered according to the numbers 0 to n, and k represents any one of the numbers 1 to n. The utility model discloses the 0 th electrode of module input and the 0 th electrode of output are connected, are called public electrode.
The LED light-emitting circuit and the switch circuit have two connection modes; the common electrode at the input end of the current transformer is used as the anode of the access current, and other electrodes at the input end are connected with the cathode of the current; and the common electrode at the input end of the current transformer is used as the negative electrode for connecting current, and other electrodes at the input end are connected with the positive electrode of the current.
In the connection mode that the common electrode of the input end is used as the anode, the common end of the switch circuit is connected with the common electrode of the output end, the kth connecting end of the switch circuit, the anode of the kth LED light-emitting circuit and the kth electrode of the output end are connected, and the cathode of the kth LED light-emitting circuit is connected with the kth electrode of the input end.
In the connection mode that the common electrode of the input end is used as the negative electrode, the common end of the switch circuit is connected with the common electrode of the output end, the kth connecting end of the switch circuit, the negative electrode of the kth LED light-emitting circuit and the kth electrode of the output end are connected, and the positive electrode of the kth LED light-emitting circuit is connected with the kth electrode of the input end.
When the output end of the driving power supply is connected with the input end of the first LED light-emitting module, the simplest LED lamp is formed, the switch circuit in the LED light-emitting module is conducted, each connecting end is conducted with the common end, the current of each LED light-emitting circuit passes through, and the current of each LED light-emitting circuit is equal to the current output by the constant current power supply.
When another LED light-emitting module capable of being connected in series is required to be connected, the LED light-emitting module is called a second LED light-emitting module, and the input end of the second LED light-emitting module is connected with the output end of the first LED light-emitting module, the switch circuit in the first LED light-emitting module is cut off, all the connection ends and the common end are cut off, the switch circuit of the second LED light-emitting module is conducted, all the connection ends and the common end are conducted, then the kth LED light-emitting circuit of the first LED light-emitting module and the kth LED light-emitting circuit of the second LED light-emitting module are connected in series, and the passing currents are equal and equal to the currents output by the constant current power supply.
If the second LED light-emitting module is connected with the third LED light-emitting module, the switch circuit of the first LED light-emitting module and the switch circuit of the second LED light-emitting module are both switched off, and the switch circuit of the third LED light-emitting module is switched on. Then the kth LED light-emitting circuit of the first LED light-emitting module, the kth LED light-emitting circuit of the second LED light-emitting module and the kth LED light-emitting circuit of the third LED light-emitting module are connected in series, the current flowing through the kth LED light-emitting circuit is the output current of the constant current power supply,
by analogy, when a plurality of LED light-emitting modules are connected in series, the switch circuit of the last connected LED light-emitting module is switched on, the switch circuits of the other LED light-emitting modules are switched off, and the kth LED circuit of each LED light-emitting module is in a series connection state.
If current is connected between the kth electrode and the common electrode of the first light-emitting module, the light-emitting brightness of the kth LED light-emitting circuit in the LED light-emitting module connected in series in the LED lamp is the same, and when the connected current changes, the light-emitting intensity changes along with the change.
When the proportion of the current connected between each electrode of the first light-emitting module and the common electrode changes, the proportion of the light-emitting intensity of the LED light-emitting circuits with different colors or color temperatures also changes, and then the LED light-emitting module presents the color and the color temperature corresponding to the proportion of the current.
In practical application, when the switch state is manually set, the switch circuit is a toggle switch, so one end of each switch is respectively connected with each connecting end of the switch circuit, and the other ends of the switches are connected together to be used as a common end. When the output end of the LED light-emitting module is not connected with the input end of the next LED light-emitting module, the toggle switch is set to the closed position; when the output end of the LED light-emitting module is connected with the next LED light-emitting module, the toggle switch is set to the off position.
Although the method has the advantages of simplicity and intuition, the method influences the appearance design of the LED light-emitting module.
When an automatic setting mode is adopted, the input end of the LED light-emitting module is provided with a magnet, and the switch circuit arranged at the output end adopts a magnetic control switch circuit.
If the LED light-emitting module only has one LED light-emitting circuit, the magnetic control switch circuit adopts a magnetic control switch, and the magnetic control switch is provided with an anode and a cathode. The selectable magnetic control switch is a normally closed reed switch which is provided with two electrodes and has no difference between the positive electrode and the negative electrode. And each electrode of the normally closed reed switch is a connecting end of the magnetic control switch circuit, and the other electrode is a common end of the magnetic control switch circuit.
When the output end of one LED light-emitting module is not connected with the input end of the other LED light-emitting module, the two electrodes of the reed switch are kept conducted; when the output end of one LED light-emitting module is connected with the input end of the other LED light-emitting module, the magnet at the input end of the latter LED light-emitting module is close to the reed switch at the output end of the former LED light-emitting module, and two electrodes of the reed switch are disconnected. The reed switch is a magnetic control switch connected with the contact piece, and the inside of the reed switch adopts a mode of conducting and disconnecting by the contact piece, so that the reed switch has the advantages of large conducting current, low voltage drop and simple control.
The other optional magnetic control switch is a non-contact magnetic control electronic switch, and the magnetic control electronic switch comprises a magnetic sensing element, a first resistor, a second resistor, a first capacitor, a second capacitor, a voltage stabilizing diode and a one-way thyristor.
The anode of the unidirectional silicon controlled rectifier is connected with one end of the first resistor and is the anode of the magnetic control electronic switch; the other end of the first resistor is connected with the cathode of the voltage stabilizing diode and one end of the first capacitor, and the connecting end of the first resistor provides voltage for the magnetic sensing element. The gate pole of the unidirectional silicon controlled rectifier is connected with one end of a second resistor, one end of a second capacitor is connected, the cathode of the unidirectional silicon controlled rectifier is connected with the other end of the first capacitor, the other end of the second capacitor is connected with the other end of the second resistor, and the connecting end of the second resistor is the cathode of the magnetic control electronic switch.
When the magnetic sensing element adopts a normally open reed switch, one end of the reed switch is connected with the cathode of the voltage stabilizing diode, and the other end of the reed switch is connected with the gate pole of the unidirectional silicon controlled rectifier. When the magnetic sensitive element adopts a normally closed Hall switch, the anode of the normally closed Hall switch is connected with the cathode of the voltage stabilizing diode, the cathode of the normally closed Hall switch is connected with the cathode of the magnetic control switch, and the output end of the normally closed Hall switch is connected with the gate pole of the unidirectional silicon controlled rectifier. When the normally closed Hall switch does not have the magnetic field action of the magnet, the output end of the normally closed Hall switch is at a low level and can not trigger the conduction between the anode and the cathode of the unidirectional silicon controlled rectifier; when the normally closed Hall switch acts on the magnetic field of the magnet, the output end of the normally closed Hall switch is at a high level, and the conduction between the anode and the cathode of the unidirectional silicon controlled rectifier is triggered.
If the utility model discloses a when LED light emitting module has a plurality of LED light emitting circuit, except a plurality of tongue tubes or the parallelly connected use of magnetic control switch, the switch circuit that still can adopt a plurality of rectifier diodes of n and a magnetic control switch to connect so can reduce switch circuit's size and cost.
In the circuit when the common electrode of the LED light-emitting module is the negative electrode, the negative electrode of the magnetic control switch is the common end of the switch circuit, the positive electrodes of the n rectifier diodes are the connecting ends of the switch circuit, and the negative electrodes of the n rectifier diodes are connected with the positive electrode of the magnetic control switch.
In the circuit when the common electrode of the LED light-emitting module is the anode, the anode of the magnetic control switch is the common end of the switch circuit, the cathodes of the n rectifier diodes are the connecting ends of the switch circuit, and the anodes of the n rectifier diodes are connected with the cathode of the magnetic control switch.
The circuit increases the voltage drop of the diode conduction, but has the advantages of simple circuit and low cost.
The above, only be the preferred embodiment of the present invention, but the design concept of the present invention is not limited to this, and any skilled person familiar with the technical field is in the technical scope disclosed in the present invention, and it is right to utilize this concept to perform insubstantial changes to the present invention, all belong to the act of infringing the protection scope of the present invention.
Claims (10)
1. LED light emitting module that can concatenate, its characterized in that includes: the LED module comprises a module body, an LED light-emitting circuit and a switch circuit, wherein the LED light-emitting circuit and the switch circuit are arranged in the module body; one end of the module body is an input end, and the other end of the module body is an output end;
the switch circuit is provided with a common end and a plurality of connecting ends; when the switch circuit is conducted, each connecting end is conducted with the public end; when the switch circuit is cut off, the connection terminals and the common terminal are cut off, and the connection terminals are kept cut off.
2. The tandem LED lighting module of claim 1, wherein: the module body is internally provided with n LED light-emitting circuits and a switch circuit, and the switch circuit is provided with a common end and n connecting ends;
the input end and the output end are respectively provided with n +1 electrodes, wherein the 0 th electrode of the input end and the 0 th electrode of the output end are connected to be used as a common electrode.
3. The tandem LED lighting module of claim 2, wherein: the common electrode of the input end is used as the anode of the access current, and other electrodes of the input end are accessed to the cathode of the access current;
the common end of the switch circuit is connected with the common electrode of the output end, the kth connecting end of the switch circuit, the positive electrode of the kth LED light-emitting circuit and the kth electrode of the output end are connected, the negative electrode of the kth LED light-emitting circuit is connected with the kth electrode of the input end, and 1< k < n.
4. The tandem LED lighting module of claim 2, wherein: the common electrode of the input end is used as the negative electrode of the access current, and other electrodes of the input end are accessed to the positive electrode of the access current;
the common end of the switch circuit is connected with the common electrode of the output end, the kth connecting end of the switch circuit, the negative electrode of the kth LED light-emitting circuit and the kth electrode of the output end are connected, the positive electrode of the kth LED light-emitting circuit is connected with the kth electrode of the input end, and 1< k < n.
5. The tandem LED lighting module of claim 1, wherein: the switch circuit is a toggle switch, one end of each toggle switch is respectively a connecting end of the switch circuit, and the other ends of the toggle switches are connected together to serve as a public end.
6. The tandem LED lighting module of claim 1, wherein: the input end is provided with a magnet, and the switching circuit adopts a magnetic control switching circuit.
7. The tandem LED lighting module of claim 6, wherein: the magnetically controllable switch circuit is a normally closed reed switch or a magnetically controlled electronic switch with a non-contact mode.
8. The tandem LED lighting module of claim 7, wherein: the magnetic control electronic switch comprises a magnetic sensing element, a first resistor, a second resistor, a first capacitor, a second capacitor, a voltage stabilizing diode and a unidirectional silicon controlled rectifier;
the anode of the unidirectional silicon controlled rectifier is connected with one end of the first resistor and is the anode of the magnetic control electronic switch; the other end of the first resistor is connected with the cathode of the voltage stabilizing diode and one end of the first capacitor, the connecting end of the first resistor provides voltage for the magnetic sensitive element, the gate pole of the unidirectional silicon controlled rectifier is connected with one end of the second resistor, one end of the second capacitor is connected, the cathode of the unidirectional silicon controlled rectifier is connected with the other end of the second capacitor at the other end of the first capacitor, the other end of the second resistor is connected, and the connecting end of the second resistor is the cathode of the magnetic control electronic switch.
LED lamp, its characterized in that: comprising a driving power supply and at least one LED lighting module in series as claimed in any one of claims 1-8; and the output end of the driving power supply is connected with the input end of the first LED light-emitting module.
10. The LED lamp of claim 9, wherein: the input end of the second LED light-emitting module is connected with the output end … … of the first LED light-emitting module, and the input end of the first NLED light-emitting module is connected with the output end of the (N-1) LED light-emitting module;
and the switching circuit of the NLED light-emitting module is switched on, and the switching circuits of the rest LED light-emitting modules are switched off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023036402.7U CN214046063U (en) | 2020-12-16 | 2020-12-16 | LED light emitting module and LED lamp that can concatenate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023036402.7U CN214046063U (en) | 2020-12-16 | 2020-12-16 | LED light emitting module and LED lamp that can concatenate |
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| Publication Number | Publication Date |
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| CN214046063U true CN214046063U (en) | 2021-08-24 |
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| CN202023036402.7U Active CN214046063U (en) | 2020-12-16 | 2020-12-16 | LED light emitting module and LED lamp that can concatenate |
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