Illumination driving module and lamp

Abstract

The utility model relates to the technical field of illumination, and provides an illumination driving module and a lamp. The illumination driving module comprises a controller, a first driver and a second driver, the controller is electrically connected with the input end of the first driver and the input end of the second driver, the controller is configured to alternately communicate an external power supply with the first driver and the second driver, and the first driver and the second driver are arranged in parallel; the output end of the first driver and the output end of the second driver are used for supplying power to the light source. Wherein the first driver and the second driver can guarantee stable work of the light source, the controller is adopted to automatically and reliably switch the two drivers to work in turn, overload protection and short-circuit protection are provided for the two drivers, and the driver which does not work is in a non-activated state, is not connected with an external power supply and does not generate heat. And the driver can be cooled and the operation wear is reduced, so that the service lives of the illumination driving module and the lamp are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, in particular to a lighting drive module and a lamp. Background Art

[0002] In high temperature environments, the failure rate of lamp drivers is high, resulting in a shorter lamp life. For example, in some steel production workshops, for safety reasons, lamps should always be turned on to ensure safe production, but the temperature in the workshop is as high as 70°C, and the lamp life is generally less than 2 years. Utility Model Content

[0003] The inventor of the present application realizes that the driver continuously and uninterruptedly provides driving current to the light source, which is easily damaged by high temperature, resulting in a short service life of the driver and the lighting driver module having the driver. The purpose of the present utility model is to provide a lighting driver module and a lamp, aiming to solve the technical problem of the short service life of the existing lighting driver modules and lamps.

[0004] The basic concept proposed by the inventor of this application is to use two drivers to work alternately, one of which is connected to an external power supply to provide driving current for the light source to ensure normal lighting of the light source, and the other driver is in an inactive state, not connected to an external power supply, and does not generate heat, which is beneficial to the driver's cooling and reducing operating wear, thereby increasing the service life of the driver. Both drivers can ensure the stable operation of the light source, and the controller can more automatically and reliably switch the two drivers to work in turn, and can provide overload protection and short-circuit protection for the driver, thereby improving the safety of the driver and thereby increasing the service life of the lighting driver module and the lamp.

[0005] In a first aspect, the present application provides a lighting driving module, which includes a controller, a first driver and a second driver, wherein the controller is electrically connected to an input end of the first driver and an input end of the second driver, respectively, and the controller is configured to alternately connect an external power supply to the first driver and the second driver, the first driver and the second driver are arranged in parallel, and the output end of the first driver and the output end of the second driver are respectively used to supply power to the light source.

[0006] In one embodiment, the lighting driving module further includes a first temperature sensor, the first temperature sensor is used to sense the temperature of the first driver, and the controller is electrically connected to the first temperature sensor. The controller obtains the temperature of the first driver through the first temperature sensor, so that when the temperature of the first driver rises to a first preset temperature, the second driver is switched to be connected to the external power supply, which effectively prevents the first driver from being damaged by overheating and helps to increase the service life of the first driver.

[0007] In one embodiment, the first driver has a built-in normally closed first temperature switch, and the first temperature switch is used to control the on-off of the first driver and the controller. When the temperature of the first driver rises to the contact temperature of the first temperature switch, the first temperature switch disconnects the electrical connection between the first driver and the controller, the first driver is in an inactive state, and the controller automatically switches the external power supply to the second driver, effectively preventing the first driver from being damaged by overheating, and helping to increase the service life of the first driver.

[0008] In one embodiment, the lighting driving module further includes a second temperature sensor, the second temperature sensor is used to sense the temperature of the second driver, and the controller is electrically connected to the second temperature sensor. The controller obtains the temperature of the second driver through the second temperature sensor, so that when the temperature of the second driver rises to a second preset temperature, the first driver is switched to be connected to the external power supply, which effectively prevents the second driver from being damaged by overheating and helps to increase the service life of the second driver.

[0009] In one embodiment, the second driver has a built-in normally closed second temperature switch, and the second temperature switch is used to control the on-off of the second driver and the controller. When the temperature of the second driver rises to the contact temperature of the second temperature switch, the second temperature switch disconnects the electrical connection between the second driver and the controller, and the second driver is in an inactive state. The controller automatically switches the external power supply to the first driver, effectively preventing the second driver from being damaged by overheating, and helping to increase the service life of the second driver.

[0010] In one embodiment, the controller includes a storage unit, which is used to store a program for controlling the timed switching of the first driver and the second driver, so that the controller accurately controls the first driver and the second driver to automatically switch to the working state in turn at a fixed time, the two drivers balance the load, reduce the long-term continuous operation of a single driver in a hot environment, and effectively prevent the first driver and the second driver from overheating and damage, thereby extending the service life of the first driver and the second driver, and ensuring uninterrupted power supply to the light source.

[0011] In one embodiment, the output end of the first driver is connected in series with a first current collection element, the output end of the second driver is connected in series with a second current collection element, and the controller is electrically connected to the first current collection element and the second current collection element respectively to obtain whether the first driver and the second driver are in a working state. When the controller switches the first driver to a working state, but detects that the driving current provided by the first driver is abnormal through the first current collection element, it is determined that the first driver has a fault, and the controller switches the second driver to a working state to achieve fault switching and ensure stable operation of the light source.

[0012] In one embodiment, the first current collection element and / or the second current collection element is a current transformer. The current transformer has the characteristics of high detection accuracy and low power consumption, and has high reliability and stability, and can maintain good working performance in working environments such as high temperature, high humidity, and electromagnetic interference.

[0013] In one embodiment, a first electronic switch is connected in series between the controller and the first driver, and the controller is configured to control the on and off of the first electronic switch, thereby reliably switching the first driver to a working state or an inactive state.

[0014] In one embodiment, a second electronic switch is connected in series between the controller and the second driver, and the controller is configured to control the on and off of the second electronic switch, thereby reliably switching the second driver to a working state or an inactive state.

[0015] In one embodiment, the first electronic switch and / or the second electronic switch is a relay. The relay can achieve electrical isolation and effectively prevent high voltage and high current from interfering with and damaging the first driver and the second driver.

[0016] In a second aspect, the present application provides a lamp, comprising a light source and a lighting driving module as described above, wherein a controller of the lighting driving module is used to connect to an external power supply, and a first driver and a second driver of the lighting driving module are respectively connected to the light source.

[0017] The lighting drive module and lamp provided by the utility model have the following beneficial effects: the first driver and the second driver can both ensure the stable operation of the light source, one of the drivers is connected to an external power supply to provide a driving current for the light source to ensure normal lighting of the light source, and the other driver is in an inactivated state, not connected to an external power supply, and does not generate heat, which is beneficial to the driver cooling and reducing operating wear, and the two drivers work alternately to increase the service life of the first driver and the second driver; and a controller is used to automatically and reliably switch the two drivers to work in turn, and can provide overload protection and short-circuit protection for the two drivers, thereby improving the safety of the drivers, solving the technical problem of the low service life of the existing lighting drive modules and lamps, thereby increasing the service life of the lighting drive modules and lamps. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0019] Figure 1 A circuit diagram of a lighting driving module provided by an embodiment of the utility model;

[0020] Figure 2 A circuit diagram of a lighting driving module having a first temperature sensor and a second temperature sensor provided by an embodiment of the utility model;

[0021] Figure 3 A circuit diagram of a lighting driving module with a first temperature switch and a second temperature switch provided in an embodiment of the utility model;

[0022] Figure 4 A circuit diagram of a lighting driving module with a storage unit provided in an embodiment of the utility model;

[0023] Figure 5 A circuit diagram of a lighting driving module having a first current collection element and a second current collection element provided in an embodiment of the utility model;

[0024] Figure 6 A circuit diagram of a lighting driving module having a first electronic switch and a second electronic switch provided in an embodiment of the utility model.

[0025] Among them, the reference numerals in the figure are:

[0026] 10. Light source; 11. Circuit board; 12. LED lamp beads;

[0027] 21. Controller; 22. First driver; 23. Second driver; 241. First temperature sensor; 242. Second temperature sensor; 251. First temperature switch; 252. Second temperature switch; 26. Storage unit; 271. First current collection element; 272. Second current collection element; 281. First electronic switch; 282. Second electronic switch. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0030] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Embodiment 1

[0034] Combination Figure 1 The present application provides a lighting driving module. The lighting driving module includes a controller 21, a first driver 22 and a second driver 23. The controller 21 is electrically connected to the input end of the first driver 22 and the input end of the second driver 23 respectively. The controller 21 is configured to connect an external power source to the first driver 22 and the second driver 23 alternately. The first driver 22 and the second driver 23 are arranged in parallel. The output end of the first driver 22 and the output end of the second driver 23 are used to supply power to the light source 10 respectively.

[0035] In this embodiment, any one of the first driver 22 and the second driver 23 can ensure the stable operation of the light source 10. When one of the drivers is connected to the external power supply and provides the driving current to the light source 10, the other driver is in an inactive state, is not connected to the external power supply, and does not generate heat, which is beneficial to the cooling of the driver and reduces the operating wear. The first driver 22 and the second driver 23 work alternately to increase the service life of the first driver 22 and the second driver 23. In addition, the lighting driver module uses the controller 21 to automatically and reliably switch the two drivers to work in turn, and can provide overload protection and short circuit protection for the two drivers, improve the safety of the driver, and thus increase the service life of the lighting driver module and the lamp.

[0036] In some embodiments, the controller 21 has an overload protection circuit and / or a short circuit protection circuit to prevent the first driver 22 and the second driver 23 from being subjected to overload, such as surge current. Optionally, the first driver 22 and the second driver 23 may no longer need to be provided with an overload protection circuit, simplifying the circuit structure of the first driver 22 and the second driver 23, reducing the power consumption and the number of heating elements of the first driver 22 and the second driver 23, and further preventing the first driver 22 and the second driver 23 from overheating.

[0037] In some embodiments, in combination Figure 2 The lighting driving module further includes a first temperature sensor 241, which is used to sense the temperature of the first driver 22, and the controller 21 is electrically connected to the first temperature sensor 241. The controller 21 obtains the temperature of the first driver 22 through the first temperature sensor 241, so that when the temperature of the first driver 22 rises to the first preset temperature, the second driver 23 is switched to be connected to the external power supply, and the first driver 22 no longer continues to work, which effectively prevents the first driver 22 from being overheated and damaged, and is conducive to improving the service life of the first driver 22.

[0038] Optionally, the first preset temperature is 50° C. to 80° C. For example, the first preset temperature is 50° C., 60° C., 70° C. or 80° C.

[0039] Optionally, the first temperature sensor 241 is a thermistor, a thermocouple, an infrared sensor, a semiconductor temperature sensor, etc., which is not limited here.

[0040] Optionally, the first temperature sensor 241 is installed inside the first driver 22 to sense the temperature of the first driver 22 at a close distance.

[0041] In some embodiments, in combination Figure 2The lighting driving module further includes a second temperature sensor 242, which is used to sense the temperature of the second driver 23, and the controller 21 is electrically connected to the second temperature sensor 242. The controller 21 obtains the temperature of the second driver 23 through the second temperature sensor 242, so that when the temperature of the second driver 23 rises to the second preset temperature, the first driver 22 is switched to be connected to the external power supply, and the second driver 23 no longer continues to work, which effectively prevents the second driver 23 from being damaged by overheating, and is conducive to improving the service life of the second driver 23.

[0042] Optionally, the second preset temperature is 50° C. to 80° C. For example, the second preset temperature is 50° C., 60° C., 70° C. or 80° C.

[0043] Optionally, the second temperature sensor 242 is a thermistor, a thermocouple, an infrared sensor, a semiconductor temperature sensor, etc., which is not limited here.

[0044] Optionally, the second temperature sensor 242 is installed inside the second driver 23 to sense the temperature of the second driver 23 at a close distance.

[0045] In some embodiments, in combination Figure 3 The first driver 22 has a built-in normally closed first temperature switch 251, which is used to control the on-off of the first driver 22 and the controller 21. When the temperature of the first driver 22 rises to the contact temperature of the first temperature switch 251, the first temperature switch 251 actively disconnects the electrical connection between the first driver 22 and the controller 21, and the first driver 22 is in an inactive state. The controller 21 automatically switches the external power supply to the second driver 23, effectively preventing the first driver 22 from being damaged by overheating, and helping to increase the service life of the first driver 22.

[0046] When the temperature of the first driver 22 reaches the contact temperature, the first temperature switch 251 is disconnected, the first driver 22 stops working, and is in an inactive state. When the temperature of the first driver 22 is lower than the contact temperature, the first temperature switch 251 is reset and closed. If the controller 21 switches the first driver 22 to be connected to the external power supply, the first driver 22 starts working. If the controller 21 switches the second driver 23 to be connected to the external power supply, the second driver 23 is still in an inactive state.

[0047] Optionally, the contact temperature of the first temperature switch 251 is 50°C to 80°C.

[0048] Optionally, the controller 21 is electrically connected to the first temperature switch 251 to obtain the working state of the first temperature switch 251. When the temperature of the first driver 22 reaches the contact temperature, the first temperature switch 251 is disconnected, and the controller 21 is configured to switch the second driver 23 to conduction with the external power supply according to the first temperature switch 251 being in the disconnected state.

[0049] In some embodiments, in combination Figure 3 The second driver 23 has a built-in normally closed second temperature switch 252, which is used to control the connection between the second driver 23 and the controller 21. When the temperature of the second driver 23 rises to the contact temperature of the second temperature switch 252, the second temperature switch 252 actively disconnects the electrical connection between the second driver 23 and the controller 21, and the second driver 23 is in an inactive state. The controller 21 automatically switches the external power supply to the first driver 22, effectively preventing the second driver 23 from being damaged by overheating, and helping to increase the service life of the second driver 23.

[0050] When the temperature of the second driver 23 reaches the contact temperature, the second temperature switch 252 is disconnected, the second driver 23 stops working, and is in an inactive state. When the temperature of the second driver 23 is lower than the contact temperature, the second temperature switch 252 is reset and closed. If the controller 21 switches the second driver 23 to be connected to the external power supply, the second driver 23 starts to work. If the controller 21 switches the first driver 22 to be connected to the external power supply, the second driver 23 is still in an inactive state.

[0051] Optionally, the contact temperature of the second temperature switch 252 is 50°C to 80°C.

[0052] Optionally, the controller 21 is electrically connected to the second temperature switch 252 to obtain the working state of the second temperature switch 252. When the temperature of the second driver 23 reaches the contact temperature, the second temperature switch 252 is disconnected, and the controller 21 is configured to switch the first driver 22 to conduction with the external power supply according to the second temperature switch 252 being in the disconnected state.

[0053] In some embodiments, the controller 21 has a mutually exclusive control circuit, the mutually exclusive control circuit has a first mutually exclusive output terminal and a second mutually exclusive output terminal, the first mutually exclusive output terminal and the second mutually exclusive output terminal are electrically connected to the first driver 22 and the second driver 23 respectively, so that the working states of the first driver 22 and the second driver 23 are mutually exclusive. If the first driver 22 receives current from the controller 21, the second driver 23 is disconnected from the controller 21; if the first driver 22 does not receive current from the controller 21, the second driver 23 is connected to the controller 21; if the second driver 23 receives current from the controller 21, the first driver 22 is disconnected from the controller 21; if the second driver 23 does not receive current from the controller 21, the first driver 22 is connected to the controller 21.

[0054] In some embodiments, in combination Figure 4 The controller 21 includes a storage unit 26, which is used to store a program for controlling the timed switching of the first driver 22 and the second driver 23, so that the controller 21 accurately controls the first driver 22 and the second driver 23 to automatically switch to the working state in turn at a fixed time, and the two drivers balance the load and reach thermal balance within a preset time, thereby reducing the long-term continuous operation of a single driver in a hot environment, effectively preventing the first driver 22 and the second driver 23 from overheating and damage, thereby extending the service life of the first driver 22 and the second driver 23, and ensuring that the power supply of the light source 10 is not interrupted.

[0055] After the first driver 22 works for a preset time, it switches to the second driver 23 to work for the next preset time, and so on. Optionally, the preset time is 3 hours to 6 hours. For example, the preset time is 3 hours, 4 hours, 5 hours or 6 hours.

[0056] Specifically, the built-in program of the storage unit 26 can be modified, so that the staff can flexibly adjust the preset time.

[0057] In some embodiments, in combination Figure 5 , the output end of the first driver 22 is connected in series with the first current collection element 271, the output end of the second driver 23 is connected in series with the second current collection element 272, and the controller 21 is electrically connected to the first current collection element 271 and the second current collection element 272 respectively to obtain whether the first driver 22 and the second driver 23 are in working state. When the controller 21 switches the first driver 22 to the working state, but detects that the driving current provided by the first driver 22 is abnormal through the first current collection element 271, it is determined that the first driver 22 has a fault, and the controller 21 switches the second driver 23 to the working state to realize fault switching, thereby ensuring the stable operation of the light source 10.

[0058] In one embodiment, in combination Figure 5 The first current collection element 271 and / or the second current collection element 272 is a current transformer. The current transformer has the characteristics of high detection accuracy and low power consumption, and has high reliability and stability, and can maintain good working performance in working environments such as high temperature, high humidity, and electromagnetic interference.

[0059] It can be understood that in other embodiments, the first current collection element 271 and / or the second current collection element 272 is a resistor shunt, a Hall current sensor or an optical fiber current sensor, which is not limited here.

[0060] In some embodiments, in combination Figure 6 A first electronic switch 281 is connected in series between the controller 21 and the first driver 22. The controller 21 is configured to control the on and off of the first electronic switch 281, thereby reliably switching the first driver 22 to a working state or an inactive state.

[0061] In some embodiments, in combination Figure 6 A second electronic switch 282 is connected in series between the controller 21 and the second driver 23. The controller 21 is configured to control the on and off of the second electronic switch 282, thereby reliably switching the second driver 23 to a working state or an inactive state.

[0062] In one embodiment, the first electronic switch 281 and / or the second electronic switch 282 is a relay. The relay can achieve electrical isolation and effectively prevent high voltage and high current from interfering with and damaging the first driver 22 and the second driver 23.

[0063] It can be understood that in other embodiments, the controller 21 may not use the first electronic switch 281 and the second electronic switch 282 to switch the working states of the first driver 22 and the second driver 23, but may switch the working states of the first driver 22 and the second driver 23 by digital signals, PWM signals, communication protocols, etc., which are not limited here.

[0064] Embodiment 2

[0065] Combination Figure 1 The lamp provided in the second embodiment includes a light source 10 and any one of the lighting driving modules in the first embodiment, the controller 21 of the lighting driving module is used to connect to an external power supply, and the first driver 22 and the second driver 23 of the lighting driving module are respectively connected to the light source 10.

[0066] The light source 10 receives the driving current from the first driver 22 and the second driver 23 to achieve stable operation. The controller 21 automatically and reliably switches the first driver 22 and the second driver 23 to work in turn, thereby increasing the service life of the first driver 22 and the second driver 23, thereby increasing the service life of the lighting driver module and the lamp.

[0067] In some embodiments, in combination Figure 1 The light source 10 includes a circuit board 11 and a plurality of LED lamp beads 12. The circuit board 11 is electrically connected to a first driver 22 and a second driver 23 to receive a driving current. The LED lamp beads 12 are electrically connected to the surface of the circuit board 11 and emit light under the driving current.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lighting driving module, characterized in that: The lighting driving module comprises a controller (21), a first driver (22) and a second driver (23); the controller (21) is electrically connected to an input end of the first driver (22) and an input end of the second driver (23), respectively; the controller (21) is configured to connect an external power source to the first driver (22) and the second driver (23) alternately; the first driver (22) and the second driver (23) are arranged in parallel; and the output end of the first driver (22) and the output end of the second driver (23) are respectively used to supply power to the light source (10).

2. The lighting driving module according to claim 1, characterized in that: The lighting driving module further comprises a first temperature sensor (241), the first temperature sensor (241) being used to sense the temperature of the first driver (22), and the controller (21) being electrically connected to the first temperature sensor (241); Alternatively, the first driver (22) has a built-in normally closed first temperature switch (251), and the first temperature switch (251) is used to control the on / off connection between the first driver (22) and the controller (21).

3. The lighting driving module according to claim 1, characterized in that: The lighting driving module further comprises a second temperature sensor (242), the second temperature sensor (242) being used to sense the temperature of the second driver (23), and the controller (21) is electrically connected to the second temperature sensor (242); Alternatively, the second driver (23) has a built-in normally closed second temperature switch (252), and the second temperature switch (252) is used to control the connection and disconnection between the second driver (23) and the controller (21).

4. The lighting driving module according to claim 1, characterized in that: The controller (21) comprises a storage unit (26) for storing a program for controlling the timed switching of the first driver (22) and the second driver (23).

5. The lighting driving module according to claim 1, characterized in that: The output end of the first driver (22) is connected in series with a first current collection element (271), the output end of the second driver (23) is connected in series with a second current collection element (272), and the controller (21) is electrically connected to the first current collection element (271) and the second current collection element (272), respectively.

6. The lighting driving module according to claim 5, characterized in that: The first current collection element (271) and / or the second current collection element (272) is a current transformer.

7. The lighting driving module according to any one of claims 1 to 6, characterized in that: A first electronic switch (281) is connected in series between the controller (21) and the first driver (22), and the controller (21) is configured to control the on and off of the first electronic switch (281).

8. The lighting driving module according to claim 7, characterized in that: A second electronic switch (282) is connected in series between the controller (21) and the second driver (23), and the controller (21) is configured to control the on and off of the second electronic switch (282).

9. The lighting driving module according to claim 8, characterized in that: The first electronic switch (281) and / or the second electronic switch (282) is a relay.

10. A lamp, characterized in that: The lamp comprises a light source (10) and a lighting driving module according to any one of claims 1 to 9, wherein a controller (21) of the lighting driving module is used to be connected to an external power supply, and a first driver (22) and a second driver (23) of the lighting driving module are respectively connected to the light source (10).

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