LED lamp

Abstract

The invention relates to an LED lamp which comprises a light source, a driving module used for driving the light source to work and a power supply module used for supplying power to the driving module, the power supply module is electrically connected with the driving module, the LED lamp is characterized in that the driving module is provided with a first plug-in terminal, the first plug-in terminal is electrically connected with the light source, and the LED lamp further comprises a connecting piece and an emergency module; the connecting piece is provided with a second plug-in terminal, the emergency module is provided with a third plug-in terminal, the connecting piece and the emergency module can be selected to work, so that the LED lamp has the following two working states: in a first working state, the second plug-in terminal of the connecting piece is matched with the first plug-in terminal of the driving module in a plug-in manner, and the third plug-in terminal of the driving module is matched with the third plug-in terminal of the driving module in a plug-in manner; the driving module and the light source can be conducted through the connecting piece; and in the second working state, the third plug-in terminal of the emergency module is in plug-in fit with the first plug-in terminal of the driving module, and the emergency module can be conducted with the light source so as to drive the light source to work through the emergency module.

Description

Technical Field

[0001] The present invention relates to the technical field of lamps, and in particular to an LED lamp. Background Art

[0002] LED lamps in the prior art are generally powered by AC power, so once the AC power is cut off, the LED lamps cannot be used. However, as users' demand for LED lamps increases, LED lamps need to be able to be used even after the AC power is cut off to increase the application scenarios of LED lamps.

[0003] To solve the above technical problems, a Chinese utility model patent with patent number ZL202321524986.3 (authorization announcement number CN220108286U) discloses an LED lamp with emergency lighting, which includes a mains input switch, an LED driving power supply, a main lighting LED lamp, a mains detection circuit, a switch state detection circuit, a backup power supply module, an emergency lighting LED lamp and a main control module; the input end of the main lighting LED lamp is connected to the output end of the LED driving power supply; the detection end of the mains detection circuit is connected to the secondary of the mains distribution transformer, and the feedback end of the mains detection circuit is connected to the main control module; the detection end of the switch state detection circuit is connected to one end of the mains input switch connected to the LED driving power supply, and the feedback end of the switch state detection circuit is connected to the main control module; the backup power supply module is connected to the emergency lighting LED lamp and the main control module; the control end of the emergency lighting LED lamp is connected to the main control module.

[0004] Although the LED lamp can effectively avoid the problem that the LED lamp cannot provide lighting function normally when the city power is cut off, this method has the following limitations: on the one hand, two LED lamps need to be set in the LED lamp, namely the main lighting LED lamp and the emergency lighting LED lamp, and the emergency lighting LED lamp is powered by the backup power supply. The emergency lighting LED lamp in the above LED lamp is only used in emergencies, and the utilization rate is not high under normal circumstances, resulting in a waste of resources; on the other hand, even if only the main lighting LED lamp is set in the LED lamp, and the backup power supply is used as the main lighting LED lamp, this method requires the backup power supply to be connected to the main lighting LED lamp by wire, which is difficult to disassemble and assemble, and is time-consuming and labor-intensive. Therefore, further improvements to the existing technology are needed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an LED lamp which is simple to assemble and disassemble and can realize that the light source continues to work after the mains power is cut off, in view of the above-mentioned prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an LED lamp, comprising a light source, a driving module for driving the light source to work, and a power module for supplying power to the driving module, wherein the power module is electrically connected to the driving module, and characterized in that: the driving module has a first plug terminal, and the first plug terminal is electrically connected to the light source; the LED lamp also comprises a connector and an emergency module, the connector has a second plug terminal, and the emergency module has a third plug terminal, and the connector and the emergency module can be selected to work one by one, so that the LED lamp has the following two working states:

[0007] In the first working state, the second plug-in terminal of the connector is plugged into and matched with the first plug-in terminal of the driving module, and the connector can make the driving module and the light source conductive;

[0008] In the second working state, the third plug-in terminal of the emergency module is plugged and matched with the first plug-in terminal of the driving module, and the emergency module can be connected to the light source to drive the light source to work through the emergency module.

[0009] In order to improve the plug-in firmness, the first plug-in terminal and the second plug-in terminal as well as the first plug-in terminal and the third plug-in terminal are respectively connected via a snap-fit ​​structure.

[0010] In order to facilitate the disassembly and assembly of the driving module and the emergency module, the LED lamp further comprises a lamp holder, and the driving module and the emergency module are both detachably arranged on the lamp holder.

[0011] In order to realize arbitrary switching between two working states and improve assembly efficiency, the driving module has a positive power output and a negative power output, the power module includes a neutral wire, a first live wire and a second live wire, the first plug-in terminal includes 8 interfaces, namely a first interface, a second interface, a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface and an eighth interface, the first interface is connected to the positive electrode of the light source, the second interface is connected to the negative electrode of the light source, the third interface is connected to the positive power output of the driving module, the fourth interface is connected to the negative power output of the driving module, the fifth interface is connected to the neutral wire of the power module, the sixth interface is connected to the input end of the driving module, the seventh interface is connected to the first live wire of the power module, the eighth interface is connected to the second live wire, and the sixth interface is connected to the input end of the driving module.

[0012] Preferably, in the first working state, the connecting member can connect the first interface with the third interface, the second interface with the fourth interface, and the sixth interface with the eighth interface.

[0013] Preferably, the emergency module includes a battery, a charging circuit, a constant voltage circuit and an emergency conversion circuit. In the second working state, the input end of the constant voltage circuit is electrically connected to the fifth interface and the seventh interface respectively, the output end of the constant voltage circuit is electrically connected to the input end of the charging circuit, the output end of the charging circuit is electrically connected to the battery, and the battery is also electrically connected to the input end of the emergency conversion circuit.

[0014] In order to achieve conduction between the emergency module and the light source, the emergency module also includes a power supply circuit and a switch module. The input end of the power supply circuit is electrically connected to the output end of the battery and the constant voltage circuit. The switch module includes a first relay. The first relay includes a first coil and a normally open contact that can move with the first coil. In the second working state, the two ends of the normally open contact of the first relay are respectively electrically connected to the sixth interface and the eighth interface, and the first coil is connected to the output end of the power supply circuit.

[0015] In order to ensure that the LED lamp can continue to be used after the mains power is cut off, the emergency module also includes a boost circuit and a power supply switching circuit. The power supply switching circuit is used to switch the power supply of the first interface and the second interface. The output end of the emergency conversion circuit is electrically connected to the input end of the boost circuit, and the output end of the boost circuit is electrically connected to the power supply switching circuit. In the second working state, the output end of the power supply switching circuit is electrically connected to the first interface, the second interface, the third interface, and the fourth interface.

[0016] In order to realize the switching of power supply for the light source, the power supply switching circuit includes a second relay, the second relay includes a second coil and two contact groups that move with the second coil, each contact group includes two static contacts and one moving contact, the two static contacts in one contact group are respectively connected to the third interface and an output end of the boost circuit, and the moving contact in the contact group is connected to the first interface; the two static contacts in the other contact group are respectively connected to the fourth interface and another output end of the boost circuit, the moving contact in the contact group is connected to the second interface, and the second coil is connected to the output end of the power supply circuit.

[0017] In order to realize the working status detection of each circuit in the emergency module, the emergency module also includes a controller, and the control port of the controller is electrically connected to the charging circuit, constant voltage circuit and emergency conversion circuit, power supply circuit and boost circuit.

[0018] Compared with the prior art, the advantages of the present invention are: by setting a first plug-in terminal on the driving module, and setting a connector with a second plug-in terminal and an emergency module with a third plug-in terminal, the second plug-in terminal is selected to be plugged into the first plug-in terminal, or the third plug-in terminal is selected to be plugged into the first plug-in terminal, so that both the connector and the emergency module can drive the light source to work, so as to cope with the power supply of the light source in both cases of having mains power and not having mains power, and the LED lamp is easy to disassemble and assemble, does not require manual wiring, and improves replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the LED lamp in the first working state according to the embodiment of the present invention;

[0020] Figure 2 for Figure 1 The structural diagram of the connecting parts;

[0021] Figure 3 This is a structural schematic diagram of the LED lamp in the second working state according to an embodiment of the present invention;

[0022] Figure 4 for Figure 3 Partial exploded view of

[0023] Figure 5 for Figure 4 The structural diagram of the emergency module;

[0024] Figure 6 is a circuit diagram of a driving module in an embodiment of the present invention;

[0025] Figure 7 is a circuit diagram of an LED lamp in a first working state according to an embodiment of the present invention;

[0026] Figure 8 A circuit diagram of a constant voltage circuit and a switch module in an emergency module according to an embodiment of the present invention;

[0027] Fig. 9 A circuit diagram of a power supply circuit, a controller and peripheral circuits in an emergency module according to an embodiment of the present invention;

[0028] Fig.10 A circuit diagram of a voltage boost circuit and a power supply switching circuit in an emergency module according to an embodiment of the present invention;

[0029] Fig.11 The figure is a circuit diagram of a charging circuit and an emergency conversion circuit in an emergency module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings.

[0031] like Figures 1 to 11 As shown, the LED lamp in this embodiment includes a lamp holder 5, a light source, a driving module 1 for driving the light source, and a power module 2 for supplying power to the driving module 1. The power module 2 is electrically connected to the driving module 1. The power module 2 in this embodiment uses AC power, and the light source uses an LED light emitting diode. The driving module 1 and the emergency module 4 are both detachably arranged on the lamp holder 5. Specifically, the driving module 1 and the emergency module 4 can be arranged on the lamp holder 5 by a snap-on method.

[0032] like Figures 1 to 5 As shown, the driving module 1 has a first plug-in terminal 11, and the first plug-in terminal 11 is electrically connected to the light source. The LED lamp also includes a connector 3 and an emergency module 4. The connector 3 has a second plug-in terminal 31, and the emergency module 4 has a third plug-in terminal 41. The first plug-in terminal 11 and the second plug-in terminal 31 and the first plug-in terminal 11 and the third plug-in terminal 41 are respectively connected by a buckle structure. The buckle structure is as shown in FIG. Figure 2 and Figure 4 The above is the prior art, which will not be described in detail here.

[0033] The connector 3 and the emergency module 4 can be selected to work selectively, so that the LED lamp has the following two working states: in the first working state, the second plug-in terminal 31 of the connector 3 is plugged into and matched with the first plug-in terminal 11 of the driving module 1, and the connector 3 can make the driving module 1 and the light source conductive; in the second working state, the third plug-in terminal 41 of the emergency module 4 is plugged into and matched with the first plug-in terminal 11 of the driving module 1, and the emergency module 4 can make the driving module 1 and the light source conductive, and the emergency module 4 can supply power to the driving module 1.

[0034] like Figure 6 As shown, in this embodiment, the driving module 1 has a positive power output electrode 12 and a negative power output electrode 13, the power module 2 includes a neutral line N, a first live line L and a second live line Lin, the first live line L and the second live line Lin are the same line on the mains, the first plug terminal 11 includes 8 interfaces, namely a first interface LED+, a second interface LED-, a third interface V+, a fourth interface V-, a fifth interface N, a sixth interface LOUT, a seventh interface L and an eighth interface LIN, the first interface LED+ is connected to the positive electrode of the light source, the second interface LED- is connected to the negative electrode of the light source, the third interface V+ is connected to the positive power output electrode 12 of the driving module 1, the fourth interface V- is connected to the negative power output electrode 13 of the driving module 1, the fifth interface N is connected to the neutral line of the power module 2, the sixth interface LOUT is connected to the input end of the driving module 1, the seventh interface L is connected to the first live line of the power module 2, the eighth interface LIN is connected to the second live line Lin, and the sixth interface LOUT is connected to the input end of the driving module 1. Figure 6 The light source is not shown. Figure 6 The port V+ connected to the first interface LED+ corresponds to the positive pole of the light source, and the second interface LED- is connected to the ports WW- and CW- through the toggle switch SW2, wherein the ports WW- and CW- both correspond to the negative poles of the light source. The function of the toggle switch SW2 is to adjust the color temperature of the light source. Figure 6 The driving module 1 in the embodiment includes a filter circuit 14, a PFC circuit 15 (power factor correction circuit) and an AC-DC conversion circuit 16 which are electrically connected in sequence.

[0035] like Figure 7 As shown, in the first working state, the connector 3 can connect the first interface LED+ with the third interface V+, the second interface LED- with the fourth interface V-, and the sixth interface LOUT with the eighth interface LIN. In this way, the driving module 1 can be powered by the power module 2 (mains power), and the positive electrode 12 of the power output of the driving module 1 is connected to the positive electrode of the light source, and the negative electrode 13 of the power output is connected to the negative electrode of the light source, so as to drive the light source to work.

[0036] like Figures 8 to 11 As shown, the emergency module 4 includes a battery BATT, a charging circuit 44, a constant voltage circuit 45, an emergency conversion circuit 46, a power supply circuit 47, a switch module 48, a boost circuit 49, a power supply switching circuit 40 and a controller 4a.

[0037] The constant voltage circuit 45 and the switch module 48 are as follows: Figure 8 As shown, the charging circuit 44 and the emergency conversion circuit 46 are as shown in FIG. Fig.11 As shown, in the second working state, the input end of the constant voltage circuit 45 is electrically connected to the fifth interface N and the seventh interface L respectively, and the output end of the constant voltage circuit 45 (corresponding to Figure 8 The DC+ in the charging circuit 44 is electrically connected to the input terminal of the charging circuit 44, and the output terminal of the charging circuit 44 is electrically connected to the battery BATT. The output terminal of the battery BATT (corresponding to Fig.11 BATT+ in the figure is also electrically connected to the input end of the emergency conversion circuit 46, and the output end of the emergency conversion circuit 46 corresponds to Fig.11 UOUT in.

[0038] The power supply circuit 47 is as follows: Fig. 9 As shown, the input end of the power supply circuit 47 is electrically connected to the battery BATT and the output end of the constant voltage circuit 45, and the output end of the power supply circuit 47 corresponds to Fig. 9In the embodiment, the power supply voltage of 8V (in this embodiment, the power supply voltage of other values ​​can also be output through the power supply circuit 17), the switch module 48 includes a first relay K2, the first relay K2 includes a first coil and a normally open contact that can move with the first coil, and in the second working state, the two ends of the normally open contact of the first relay K2 are electrically connected to the sixth interface LOUT and the eighth interface LIN respectively, and the first coil is connected to the output end of the power supply circuit 47. In this way, the conduction between the sixth interface LOUT and the eighth interface LIN can be achieved in the second working state.

[0039] The output end of the emergency conversion circuit 46 is electrically connected to the input end of the boost circuit 49. Fig.10 As shown, the output terminal of the boost circuit 49 (i.e. Fig.10 The YJDC+ and YJDC- in the circuit are electrically connected to the power supply switching circuit 40. The emergency conversion circuit 46 in this embodiment includes a first switch device (corresponding to the transistor Q4), a second switch device (corresponding to the MOS tube Q6, an electrolytic capacitor (C10), and resistors (R21, R22, R23, and R24). By adjusting the voltage of the voltage dividing point by the charge and discharge characteristics of the electrolytic capacitor and the resistors R21, R22, R23, and R24, the on and off of the transistor Q4 and the on and off of the MOS tube Q6 can be controlled, so that the battery shutdown voltage can be accurately set without the control of the MCU.

[0040] In the second working state, the output end of the power supply switching circuit 40 is electrically connected to the first interface LED+, the second interface LED-, the third interface V+, and the fourth interface V-, and the power supply switching circuit 40 is used to switch the power supply of the first interface LED+ and the second interface LED-. Fig.10 As shown, the power supply switching circuit 40 in this embodiment includes a second relay K1, which includes a second coil and two contact groups that move with the second coil, each contact group includes two static contacts and one moving contact, the two static contacts in one contact group are respectively connected to the third interface V+ and an output end of the boost circuit 49, and the moving contact in the contact group is connected to the first interface LED+; the two static contacts in another contact group are respectively connected to the fourth interface V- and another output end of the boost circuit 49, the moving contact in the contact group is connected to the second interface LED-, and the second coil is connected to the output end of the power supply circuit 47. In this way, when the LED lamp is in the second working state, the power supply circuit 47 can supply power to the second coil. After the second coil is powered, since there is voltage at the output end of the boost circuit 49, the moving contacts of the two contact groups are switched to connect to the first interface LED+ and the second interface LED-, so that the emergency module 4 supplies power to the light source, thereby driving the light source to work.

[0041] The controller 4a in this embodiment adopts MCU, and the control port of the controller 4a is electrically connected to the charging circuit 44, the constant voltage circuit 45, the emergency conversion circuit 46, the power supply circuit 47 and the boost circuit 49. In this embodiment, the 15th port of the MCU (corresponding to P25) is used to realize the emergency state switching, the 1st port of the MCU (corresponding to P34) is used for voltage state detection, and the 19th port of the MCU (corresponding to P32) is used to detect the light board. When the light board is inserted between the resistors R35 and R36 of the boost circuit 49, the detection voltage of the 19th port of the MCU is less than 1V; when the light board is not inserted between the resistors R35 and R36 of the boost circuit 49, the detection voltage of the 19th port of the MCU is greater than 1.5V; the 14th port of the MCU (corresponding to P24) is used for the first startup test, and the 16th port of the MCU (corresponding to P26) is used for the battery in place test. Of course, the port of the MCU is also connected to a status indication module, which will not be elaborated here.

[0042] In this embodiment, the connector and the driver module can be selected for insertion, and the driver module can be powered by AC power so that the driver module drives the light source to work; of course, the emergency module and the driver module can also be selected for insertion. The emergency module can be used when powered by AC power, and the battery can be charged by AC power to drive the light source to work through the emergency module. In addition, the emergency module can also switch to powering the light source through the battery after the AC power is cut off.

Claims

1. An LED lamp, comprising a light source, a driving module (1) for driving the light source, and a power module (2) for supplying power to the driving module (1), wherein the power module (2) is electrically connected to the driving module (1), and characterized in that: The driving module (1) has a first plug-in terminal (11), the first plug-in terminal (11) being electrically connected to the light source, the LED lamp further comprising a connecting piece (3) and an emergency module (4), the connecting piece (3) having a second plug-in terminal (31), the emergency module (4) having a third plug-in terminal (41), the connecting piece (3) and the emergency module (4) being able to be selectively operated, thereby enabling the LED lamp to have the following two operating states: In a first working state, the second plug-in terminal (31) of the connecting member (3) is plugged into and matched with the first plug-in terminal (11) of the driving module (1), and the connecting member (3) can enable conduction between the driving module (1) and the light source; In the second working state, the third plug terminal (41) of the emergency module (4) is plugged into and matched with the first plug terminal (11) of the drive module (1), and the emergency module (4) can be connected to the light source to drive the light source to work through the emergency module (4).

2. The LED lamp according to claim 1, characterized in that: The first plug-in terminal (11) and the second plug-in terminal (31) as well as the first plug-in terminal (11) and the third plug-in terminal (41) are respectively connected via a snap-fit ​​structure.

3. The LED lamp according to claim 1, characterized in that: The LED lamp also includes a lamp holder (5), and the driving module (1) and the emergency module (4) are both detachably mounted on the lamp holder (5).

4. The LED lamp according to any one of claims 1 to 3, characterized in that: The driving module (1) has a positive power output electrode (12) and a negative power output electrode (13); the power module (2) comprises a neutral line (N), a first live line (L) and a second live line (Lin); the first plug-in terminal (11) comprises eight interfaces, namely a first interface (LED+), a second interface (LED-), a third interface (V+), a fourth interface (V-), a fifth interface (N), a sixth interface (LOUT), a seventh interface (L) and an eighth interface (LIN); the first interface (LED+) is connected to the positive electrode of the light source, and the second interface (LED-) is connected to the positive electrode of the light source. The first interface (V+) is connected to the cathode of the light source, the second interface (V-) is connected to the anode (12) of the power output of the driving module (1), the third interface (V+) is connected to the cathode (13) of the power output of the driving module (1), the fifth interface (N) is connected to the neutral line of the power module (2), the sixth interface (LOUT) is connected to the input end of the driving module (1), the seventh interface (L) is connected to the first live line of the power module (2), the eighth interface (LIN) is connected to the second live line (Lin), and the sixth interface (LOUT) is connected to the input end of the driving module (1).

5. The LED lamp according to claim 4, characterized in that: In a first working state, the connector (3) can connect the first interface (LED+) to the third interface (V+), the second interface (LED-) to the fourth interface (V-), and the sixth interface (LOUT) to the eighth interface (LIN).

6. The LED lamp according to claim 4, characterized in that: The emergency module (4) comprises a battery (BATT), a charging circuit (44), a constant voltage circuit (45) and an emergency conversion circuit (46); in a second working state, the input end of the constant voltage circuit (45) is electrically connected to the fifth interface (N) and the seventh interface (L), respectively, the output end of the constant voltage circuit (45) is electrically connected to the input end of the charging circuit (44), the output end of the charging circuit (44) is electrically connected to the battery (BATT), and the battery (BATT) is also electrically connected to the input end of the emergency conversion circuit (46).

7. The LED lamp according to claim 6, characterized in that: The emergency module (4) further comprises a power supply circuit (47) and a switch module (48), wherein an input end of the power supply circuit (47) is electrically connected to a battery (BATT) and an output end of a constant voltage circuit (45), and the switch module (48) comprises a first relay (K2), wherein the first relay (K2) comprises a first coil and a normally open contact capable of operating with the first coil, and in a second working state, two ends of the normally open contact of the first relay (K2) are electrically connected to a sixth interface (LOUT) and an eighth interface (LIN) respectively, and the first coil is connected to the output end of the power supply circuit (47).

8. The LED lamp according to claim 7, characterized in that: The emergency module (4) further comprises a boost circuit (49) and a power supply switching circuit (40); the power supply switching circuit (40) is used to switch the power supply of the first interface (LED+) and the second interface (LED-); the output end of the emergency conversion circuit (46) is electrically connected to the input end of the boost circuit (49); the output end of the boost circuit (49) is electrically connected to the power supply switching circuit (40); in a second working state, the output end of the power supply switching circuit (40) is electrically connected to the first interface (LED+), the second interface (LED-), the third interface (V+), and the fourth interface (V-).

9. The LED lamp according to claim 8, characterized in that: The power supply switching circuit (40) comprises a second relay (K1), the second relay (K1) comprises a second coil and two contact groups that move with the second coil, each contact group comprises two static contacts and one moving contact, the two static contacts in one contact group are respectively connected to a third interface (V+) and an output end of a boost circuit (49), and the moving contact in the contact group is connected to a first interface (LED+); the two static contacts in another contact group are respectively connected to a fourth interface (V-) and another output end of the boost circuit (49), and the moving contact in the contact group is connected to a second interface (LED-), and the second coil is connected to the output end of a power supply circuit (47).

10. The LED lamp according to claim 8, characterized in that: The emergency module (4) further comprises a controller (4a), wherein a control port of the controller (4a) is electrically connected to the charging circuit (44), the constant voltage circuit (45), the emergency conversion circuit (46), the power supply circuit (47) and the boost circuit (49).

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