LED lamp

Abstract

The utility model 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 plugging terminal, the first plugging 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 utility model 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 mains electricity, so once the mains 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 mains 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 driver power supply, a mains LED lamp, a mains detection circuit, a switch status detection circuit, a backup power supply module, an emergency lighting LED lamp and a main control module; the input end of the mains LED lamp is connected to the output end of the LED driver 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 status detection circuit is connected to one end of the mains input switch connected to the LED driver power supply, and the feedback end of the switch status 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; and 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 normal lighting function when the main 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-mentioned LED lamp is only used in emergencies and has a low utilization rate 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. Utility Model Content

[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 keep the light source working 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 as follows: an LED lamp, comprising a light source, a driving module for driving the light source, and a power module for supplying power to the driving module, wherein the power module is electrically connected to the driving module, and is characterized in that: the driving module has a first plug terminal, which is electrically connected to the light source; the LED lamp further comprises a connector and an emergency module, the connector has a second plug terminal, and the emergency module has a third plug terminal, wherein the connector and the emergency module can be selectively operated, thereby enabling the LED lamp to have 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 driver module, and the connector enables conduction between the driver module and the light source;

[0008] In the second working state, the third plug-in terminal of the emergency module is plugged into 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 assembly and disassembly 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 mounted on the lamp holder.

[0011] In order to achieve arbitrary switching between two working states and improve assembly efficiency, the driving module has a positive power output pole and a negative power output pole, the power module includes a neutral wire, a first live wire and a second live wire, and the first plug-in terminal includes 8 interfaces, namely the first interface, the second interface, the third interface, the fourth interface, the fifth interface, the sixth interface, the seventh interface and the eighth interface. The first interface is connected to the positive pole of the light source, the second interface is connected to the negative pole of the light source, the third interface is connected to the positive power output pole of the driving module, the fourth interface is connected to the negative power output pole 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 power supply switching for powering 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 the other 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 that: 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, and does not require manual wiring, thereby improving 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 utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the connecting parts;

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

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

[0023] Figure 5 for Figure 4 Schematic diagram of the structure of the emergency module;

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

[0025] Figure 7 This is a circuit diagram of the LED lamp in the first working state in an embodiment of the present utility model;

[0026] Figure 8 This is a circuit diagram of a constant voltage circuit and a switch module in an emergency module according to an embodiment of the present utility model;

[0027] Figure 9 This is a circuit diagram of the power supply circuit, controller and peripheral circuits in the emergency module of the embodiment of the utility model;

[0028] Figure 10 This is a circuit diagram of a boost circuit and a power supply switching circuit in an emergency module according to an embodiment of the present utility model;

[0029] Figure 11 This is a circuit diagram of the charging circuit and the emergency conversion circuit in the emergency module according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0031] like Figures 1 to 11 As shown, the LED lamp in this embodiment includes a lamp holder 5, a light source, a driver module 1 for driving the light source, and a power module 2 for powering the driver module 1. The power module 2 is electrically connected to the driver module 1. In this embodiment, the power module 2 uses AC power, and the light source is an LED. The driver module 1 and the emergency module 4 are both detachably mounted on the lamp holder 5. Specifically, the driver module 1 and the emergency module 4 can be mounted on the lamp holder 5 by snapping.

[0032] like Figures 1 to 5 As shown, the driving module 1 has a first plug-in terminal 11, which is electrically connected to the light source. The LED lamp further 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, as well as the first plug-in terminal 11 and the third plug-in terminal 41, are connected by a snap-fit ​​structure. The snap-fit ​​structure is shown in FIG. Figure 2 and Figure 4 The above is the prior art and will not be described in detail here.

[0033] The connector 3 and the emergency module 4 can be selected to work selectively, thereby making the LED lamp have 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 driver module 1, and the connector 3 can make the driver 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 driver module 1, and the emergency module 4 can make the driver module 1 and the light source conductive, and the emergency module 4 can supply power to the driver module 1.

[0034] like Figure 6 As shown, in this embodiment, the driver module 1 has a power output positive pole 12 and a power output negative pole 13, the power module 2 includes a neutral wire, a first live wire and a second live wire Lin, the first live wire and the second live wire Lin are the same wire on the mains, the first plug terminal 11 includes 8 interfaces, namely the first interface LED+, the second interface LED-, the third interface V+, the fourth interface V-, the fifth interface N, the sixth interface LOUT, the seventh interface L and the eighth interface LIN, the first interface LED+ is connected to the positive pole of the light source, the second interface LED- is connected to the negative pole of the light source, the third interface V+ is connected to the power output positive pole 12 of the driver module 1, the fourth interface V- is connected to the power output negative pole 13 of the driver module 1, the fifth interface N is connected to the neutral wire of the power module 2, the sixth interface LOUT is connected to the input end of the driver module 1, the seventh interface L is connected to the first live wire of the power module 2, the eighth interface LIN is connected to the second live wire Lin, and the sixth interface LOUT is connected to the input end of the driver module 1. Figure 6The 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, where 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 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+ to the third interface V+, the second interface LED- to the fourth interface V-, and the sixth interface LOUT to the eighth interface LIN. In this way, the driver module 1 can be powered by the power module 2 (mains power), and the positive power output electrode 12 of the driver module 1 is connected to the positive electrode of the light source, and the negative power output electrode 13 is connected to the negative electrode of the light source, thereby driving the light source to work.

[0036] like Figures 8-11 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. Figure 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 end of the charging circuit 44, and the output end of the charging circuit 44 is electrically connected to the battery BATT. The output end of the battery BATT (corresponding to Figure 11 BATT+) 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 Figure 11 UOUT in.

[0038] The power supply circuit 47 is as follows: Figure 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 Figure 9In the second working state, the first relay K2 is 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, in the second working state, the sixth interface LOUT and the eighth interface LIN are electrically connected.

[0039] The output end of the emergency conversion circuit 46 is electrically connected to the input end of the boost circuit 49. Figure 10 As shown, the output terminal of the boost circuit 49 (ie Figure 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 switching device (corresponding to the transistor Q4), a second switching device (corresponding to the MOS transistor Q6), an electrolytic capacitor (C10), and resistors (R21, R22, R23, and R24). By adjusting the voltage divider voltage by the charge and discharge characteristics of the electrolytic capacitor and in conjunction with the resistors R21, R22, R23, and R24, the on / off switching of the transistor Q4 and the on / off switching of the MOS transistor Q6 can be controlled, thereby achieving the precise setting of the battery shutdown voltage without MCU control.

[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-. The power supply switching circuit 40 is used to switch the power supply of the first interface LED+ and the second interface LED-. Figure 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 operate in conjunction with the second coil. Each contact group includes two stationary contacts and one movable contact. The two stationary contacts in one contact group are respectively connected to the third interface V+ and an output terminal of the boost circuit 49, while the movable contact in this contact group is connected to the first interface LED+. The two stationary contacts in the other contact group are respectively connected to the fourth interface V- and another output terminal of the boost circuit 49, while the movable contact in this contact group is connected to the second interface LED-. The second coil is connected to the output terminal of the power supply circuit 47. Thus, when the LED lamp is in the second operating state, the power supply circuit 47 can power the second coil. After the second coil is energized, due to the voltage at the output terminal of the boost circuit 49, the movable contacts of both contact groups switch to connecting to the first interface LED+ and the second interface LED-, thereby enabling the emergency module 4 to power the light source, thereby driving the light source.

[0041] The controller 4a in this embodiment uses an 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 MCU's port 15 (corresponding to P25) is used to implement emergency state switching, the MCU's port 1 (corresponding to P34) is used for voltage state detection, and the MCU's port 19 (corresponding to P32) is used to detect the lamp board. When a lamp board is inserted between the resistors R35 and R36 of the boost circuit 49, the voltage detected by the MCU's port 19 is less than 1V; when no lamp board is inserted between the resistors R35 and R36 of the boost circuit 49, the voltage detected by the MCU's port 19 is greater than 1.5V; the MCU's port 14 (corresponding to P24) is used for the initial startup test, and the MCU's port 16 (corresponding to P26) is used for the battery in place test. Of course, the MCU's port 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 the 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 the AC power, and the battery can be charged by the 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 outage.

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 is characterized in that: 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 further comprises 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 connector (3) and the emergency module (4) can 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 connector (3) is plugged into and matched with the first plug-in terminal (11) of the driver module (1), and the connector (3) enables conduction between the driver 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 driving 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, wherein: 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 driver module (1) has a power output positive electrode (12) and a power output negative electrode (13); the power module (2) includes a neutral line, a first live line, and a second live line Lin; the first plug-in 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 power output positive electrode (12) of the driver module (1); the fourth interface V- is connected to the power output negative electrode (13) of the driver 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 driver 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 driver 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 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 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. In a 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).

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), wherein 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); and 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) includes a second relay K1, the second relay K1 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 the other contact group are respectively connected to the fourth interface V- and the other 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).

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).

Images