LED lamp

Abstract

An LED lamp, comprising a light source, a driving module (1) used for driving the light source to operate, and a power supply module (2) used for supplying power to the driving module (1). The power supply module (2) is electrically connected to the driving module (1), the driving module (1) is provided with 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 connecting member (3) and an emergency module (4), the connecting member (3) being provided with a second plug-in terminal (31), and the emergency module (4) being provided with a third plug-in terminal (41). One of the connecting member (3) and the emergency module (4) can be selected to operate, so that the LED lamp has the following two operational states: in a first operational state, the second plug-in terminal (31) of the connecting member (3) is in plug-in engagement with the first plug-in terminal (11) of the driving module (1), and the connecting member (3) can cause the driving module (1) and the light source to be connected; in a second operational state, the third plug-in terminal (41) of the emergency module (4) is in plug-in engagement with the first plug-in terminal (11) of the driving module (1), and the emergency module (4) can be connected with the light source, such that the light source can be driven to operate by means of the emergency module (4).

Description

LED lamp TECHNICAL FIELD

[0001] The present application relates to the technical field of lamps, in particular to an LED lamp. BACKGROUND

[0002] The LED lamps in the prior art are generally powered by commercial power, so once the commercial power is cut off, the LED lamp cannot be used. However, with the increasing demand of users for LED lamps, it is necessary to use LED lamps after the commercial power is cut off to increase the application scenarios of LED lamps.

[0003] To solve the above technical problems, a LED lamp with emergency lighting is disclosed in Chinese Utility Model Patent No. ZL202321524986.3 (Authorized Announcement No. CN220108286U), which comprises a commercial power input switch, an LED driving power supply, a main lighting LED lamp, a commercial power detection circuit, a switch state detection circuit, a backup power module, an emergency lighting LED lamp and a master 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 commercial power detection circuit is connected to the secondary side of the commercial power distribution transformer, and the feedback end of the commercial power detection circuit is connected to the master control module. The detection end of the switch state detection circuit is connected to one end of the commercial power input switch and the LED driving power supply, and the feedback end of the switch state detection circuit is connected to the master control module. The backup power module is connected to the emergency lighting LED lamp and the master control module. The control end of the emergency lighting LED lamp is connected to the master control module.

[0004] Although the LED lamp can effectively avoid the problem that the LED lamp cannot normally provide lighting function when the commercial power is cut off, the above-mentioned LED lamp has the following use limitations: on the one hand, two LED lamps need to be provided in the LED lamp, i.e. the main lighting LED lamp and the emergency lighting LED lamp, and the backup power supply is used to supply power to the emergency lighting LED lamp. The emergency lighting LED lamp in the above-mentioned LED lamp is only used in emergency, and the utilization rate is not high under normal circumstances, resulting in waste of resources. On the other hand, even if only the main lighting LED lamp is provided in the LED lamp and the backup power supply is used to supply power to the main lighting LED lamp, this way needs to connect the backup power supply to the main lighting LED lamp through wires, which is difficult to disassemble and assemble, and time-consuming and laborious. Therefore, the prior art needs to be further improved.

[0005] SUMMARY

[0006] The present application solves the technical problems of the prior art and provides an LED lamp which is simple to disassemble and assemble and can continue to work after the commercial power is cut off.

[0007] The technical scheme adopted by the present application 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, the power module being electrically connected with the driving module, characterized in that the driving module has a first plug-in terminal, the first plug-in terminal being electrically connected with the light source, the LED lamp further comprising a connecting piece and an emergency module, the connecting piece having a second plug-in terminal, the emergency module having a third plug-in terminal, the connecting piece and the emergency module being able to be selectively selected to work, so that the LED lamp has the following two working states:

[0008] In the first working state, the second plug-in terminal of the connecting piece is plugged and matched with the first plug-in terminal of the driving module, and the connecting piece can make the driving module conductive with the light source;

[0009] 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 conductive with the light source to drive the light source to work through the emergency module.

[0010] In order to improve the plug-in firmness, the first plug-in terminal and the second plug-in terminal are connected through a buckle structure, and the first plug-in terminal and the third plug-in terminal are connected through a buckle structure.

[0011] 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 arranged on the lamp holder in a detachable manner.

[0012] In order to realize arbitrary switching in the two working states and improve assembly efficiency, the driving module has a power output positive electrode and a power output negative electrode, the power module comprises a zero line, a first live wire and a second live wire, the first plug-in terminal comprises eight 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 with the positive electrode of the light source, the second interface is connected with the negative electrode of the light source, the third interface is connected with the power output positive electrode of the driving module, the fourth interface is connected with the power output negative electrode of the driving module, the fifth interface is connected with the zero line of the power module, the sixth interface is connected with the input end of the driving module, the seventh interface is connected with the first live wire of the power module, and the eighth interface is connected with the second live wire.

[0013] Preferably, in the first working state, the connecting piece can connect the first interface with the third interface, connect the second interface with the fourth interface, and connect the sixth interface with the eighth interface.

[0014] Preferably, the emergency module comprises a battery, a charging circuit, a constant voltage circuit and an emergency switching circuit, in the second working state, the input end of the constant voltage circuit is electrically connected with the fifth interface and the seventh interface respectively, the output end of the constant voltage circuit is electrically connected with the input end of the charging circuit, the output end of the charging circuit is electrically connected with the battery, and the battery is also electrically connected with the input end of the emergency switching circuit.

[0015] In order to realize the conduction between the emergency module and the light source, the emergency module further comprises a power supply circuit and a switch module, the input end of the power supply circuit is electrically connected with the battery and the output end of the constant voltage circuit, and the switch module comprises a first relay, the first relay comprises a first coil and a normally open contact which can act with the first coil, in the second working state, the normally open contact of the first relay is electrically connected with the sixth interface and the eighth interface respectively, and the first coil is connected with the output end of the power supply circuit.

[0016] In order to realize that the LED lamp can continue to be used after the mains power is cut off, the emergency module further comprises a boost circuit and a power supply switching circuit, the power supply switching circuit is used for switching the power supply source of the first interface and the second interface, the output end of the emergency switching circuit is electrically connected with the input end of the boost circuit, the output end of the boost circuit is electrically connected with the power supply switching circuit, and in the second working state, the output end of the power supply switching circuit is electrically connected with the first interface, the second interface, the third interface and the fourth interface.

[0017] In order to realize the switching of the power supply source for supplying power to the light source, the power supply switching circuit comprises a second relay, the second relay comprises a second coil and two contact groups which can act 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 with the third interface and an output end of the boost circuit, and the moving contact in the contact group is connected with the first interface; the two static contacts in the other contact group are respectively connected with the fourth interface and another output end of the boost circuit, and the moving contact in the contact group is connected with the second interface, and the second coil is connected with the output end of the power supply circuit.

[0018] In order to realize the working state detection of each circuit in the emergency module, the emergency module further comprises a controller, and the control port of the controller is electrically connected with the charging circuit, the constant voltage circuit, the emergency switching circuit, the power supply circuit and the boost circuit.

[0019] Compared with the prior art, the LED lamp has the advantages that: by arranging the first plug-in terminal on the driving module, and arranging the connecting piece with the second plug-in terminal and the emergency module with the third plug-in terminal, the second plug-in terminal or the third plug-in terminal is plugged with the first plug-in terminal, so that the connecting piece and the emergency module can drive the light source to work, the light source can be powered in the case of having commercial power or not having commercial power, and the LED lamp is simple to disassemble and assemble, does not need manual connection, and improves the replacement efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is an exploded view of the LED lamp in the first working state according to the embodiment of the present application;

[0021] Fig. 2 is a structural schematic view of the connecting piece in Fig. 1;

[0022] Fig. 3 is a structural schematic view of the LED lamp in the second working state according to the embodiment of the present application;

[0023] Fig. 4 is a partial exploded view of Fig. 3;

[0024] Fig. 5 is a structural schematic view of the emergency module in Fig. 4;

[0025] Fig. 6 is a circuit diagram of the driving module according to the embodiment of the present application;

[0026] Fig. 7 is a circuit diagram of the LED lamp in the first working state according to the embodiment of the present application;

[0027] Fig. 8 is a circuit diagram of the constant voltage circuit and the switch module in the emergency module according to the embodiment of the present application;

[0028] Fig. 9 is a circuit diagram of the power supply circuit, the controller and the peripheral circuit in the emergency module according to the embodiment of the present application;

[0029] Fig. 10 is a circuit diagram of the boost circuit and the power supply switching circuit in the emergency module according to the embodiment of the present application;

[0030] Fig. 11 is a circuit diagram of the charging circuit and the emergency conversion circuit in the emergency module according to the embodiment of the present application. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below with reference to the embodiments of the drawings.

[0032] As shown in FIGS. 1-11, the LED lamp of the present embodiment comprises a lamp holder 5, a light source, a driving module 1 for driving the light source to work, and a power module 2 for supplying power to the driving module 1, the power module 2 being electrically connected with the driving module 1, the power module 2 of the present embodiment adopting mains power, and the light source adopting 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 in a clamping manner.

[0033] As shown in FIGS. 1-5, the driving module 1 has a first plug-in terminal 11, the first plug-in terminal 11 being electrically connected with 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 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 being respectively connected through a buckle structure, the buckle structure being shown in FIGS. 2 and 4, which is prior art and will not be described here.

[0034] The connecting piece 3 and the emergency module 4 can be selectively selected to work, thereby making the LED lamp have the following two working states: in a first working state, the second plug-in terminal 31 of the connecting piece 3 is plugged and matched with the first plug-in terminal 11 of the driving module 1, the connecting piece 3 enabling the driving module 1 to be conducted with the light source; in a second working state, the third plug-in terminal 41 of the emergency module 4 is plugged and matched with the first plug-in terminal 11 of the driving module 1, the emergency module 4 enabling the driving module 1 to be conducted with the light source, and the emergency module 4 being capable of supplying power to the driving module 1.

[0035] As shown in Fig. 6, the driving module 1 has a power output positive pole 12 and a power output negative pole 13 in the embodiment, the power module 2 includes a zero line N, a first live wire L and a second live wire Lin, the first live wire L and the second live wire Lin are the same line on the mains, the first plug-in terminal 11 includes eight interfaces, which are 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 with a positive pole of a light source, the second interface LED- is connected with a negative pole of the light source, the third interface V+ is connected with the power output positive pole 12 of the driving module 1, the fourth interface V- is connected with the power output negative pole 13 of the driving module 1, the fifth interface N is connected with the zero line of the power module 2, the sixth interface LOUT is connected with an input end of the driving module 1, the seventh interface L is connected with the first live wire of the power module 2, and the eighth interface LIN is connected with the second live wire Lin. The light source is not shown in Fig. 6, the port V+ connected with the first interface LED+ in Fig. 6 corresponds to the positive pole of the light source, the second interface LED- is connected with ports WW- and CW- through a dial switch SW2, wherein the ports WW- and CW- both correspond to the negative pole of the light source, and the dial switch SW2 is used to adjust the color temperature of the light source. The driving module 1 in Fig. 6 includes a filter circuit 14, a PFC circuit 15 (power factor correction circuit) and an AC-DC conversion circuit 16 which are connected in sequence.

[0036] As shown in Fig. 7, in the first working state, the connecting piece 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 power module 2 (mains) can supply power to the driving module 1, and the power output positive pole 12 of the driving module 1 is connected with the positive pole of the light source, and the power output negative pole 13 is connected with the negative pole of the light source, so as to drive the light source to work.

[0037] As shown in Figs. 8-11, 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.

[0038] The constant voltage circuit 45 and the switch module 48 are shown in Fig. 8, the charging circuit 44 and the emergency conversion circuit 46 are shown in Fig. 11, in the second working state, the input terminals of the constant voltage circuit 45 are electrically connected with the fifth interface N and the seventh interface L respectively, the output terminal (corresponding to DC+ in Fig. 8) of the constant voltage circuit 45 is electrically connected with the input terminal of the charging circuit 44, the output terminal of the charging circuit 44 is electrically connected with the battery BATT, and the output terminal (corresponding to BATT+ in Fig. 11) of the battery BATT is also electrically connected with the input terminal of the emergency conversion circuit 46, and the output terminal of the emergency conversion circuit 46 corresponds to UOUT in Fig. 11.

[0039] The power supply circuit 47 is shown in Fig. 9, the input terminal of the power supply circuit 47 is electrically connected with the battery BATT and the output terminal of the constant voltage circuit 45, and the output terminal of the power supply circuit 47 corresponds to 8V in Fig. 9 (in this embodiment, the power supply circuit 17 can also output other values of power supply voltage), the switch module 48 includes a first relay K2, the first relay K2 includes a first coil and a normally open contact which can act with the first coil, in the second working state, the normally open contact of the first relay K2 is electrically connected with the sixth interface LOUT and the eighth interface LIN respectively, and the first coil is connected with the output terminal of the power supply circuit 47. Thus, in the second working state, the conduction between the sixth interface LOUT and the eighth interface LIN can be realized.

[0040] The output terminal of the emergency conversion circuit 46 is electrically connected with the input terminal of the boost circuit 49, the boost circuit 49 is shown in Fig. 10, and the output terminal (YJDC+ and YJDC- in Fig. 10) of the boost circuit 49 is electrically connected with the power supply switching circuit 40. The emergency conversion circuit 46 in this embodiment includes a first switch device (corresponding to a triode Q4), a second switch device (corresponding to a MOS tube Q6), an electrolytic capacitor (C10), and resistors (R21, R22, R23 and R24), by adjusting the voltage at the voltage dividing point through the charge and discharge characteristics of the electrolytic capacitor and the resistors R21, R22, R23 and R24, the opening and closing of the triode Q4 and the MOS tube Q6 can be controlled, so that the battery cutoff voltage can be accurately set without the control of the MCU.

[0041] In the second working state, the output end of the power supply switching circuit 40 is electrically connected with 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 for switching the power supply of the first interface LED+ and the second interface LED-, as shown in FIG. 10, the power supply switching circuit 40 in the embodiment includes a second relay K1, the second relay K1 includes a second coil and two contact groups moving 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 with the third interface V+ and an output end of the voltage boosting circuit 49, and the moving contact in the contact group is connected with the first interface LED+; the two static contacts in the other contact group are respectively connected with the fourth interface V- and another output end of the voltage boosting circuit 49, and the moving contact in the contact group is connected with the second interface LED-, and the second coil is connected with the output end of the power supply circuit 47. Thus, when the LED lamp is in the second working state, the power supply circuit 47 can supply power to the second coil, and after the second coil is powered, because the output end of the voltage boosting circuit 49 has voltage, the moving contacts of the two contact groups are switched to be connected with 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.

[0042] The controller 4a in the embodiment adopts an MCU, and the control port of the controller 4a is electrically connected with the charging circuit 44, the constant voltage circuit 45, the emergency switching circuit 46, the power supply circuit 47 and the voltage boosting circuit 49. In the embodiment, the 15th port (corresponding to P25) of the MCU is used for realizing emergency state switching, the 1st port (corresponding to P34) of the MCU is used for voltage state detection, the 19th port (corresponding to P32) of the MCU is used for detecting a lamp panel, when the lamp panel is inserted between the resistors R35 and R36 of the voltage boosting circuit 49, the 19th port of the MCU detects a voltage less than 1V; when the lamp panel is not inserted between the resistors R35 and R36 of the voltage boosting circuit 49, the 19th port of the MCU detects a voltage greater than 1.5V; the 14th port (corresponding to P24) of the MCU is used for first start test, and the 16th port (corresponding to P26) of the MCU is used for battery in-place test. Of course, the ports of the MCU are also connected with a state indication module, which will not be described here.

[0043] In the embodiment, the connecting member can be selected to be inserted with the driving module, and the driving module is supplied with power by the commercial power supply, so that the driving module drives the light source to work; of course, the emergency module can also be selected to be inserted with the driving module, the emergency module can be used when the commercial power supply is supplied, and the battery can be charged by the commercial power supply, the light source is driven by the emergency module, and in addition, the emergency module can be switched to supply power to the light source by the battery after the commercial power supply is powered off.

Claims

1. LED lamp, comprising a light source, a driving module (1) for driving the light source to work and a power module (2) for supplying power to the driving module (1), the power module (2) is electrically connected with the driving module (1), characterized in that: The driving module (1) has a first plug-in terminal (11) electrically connected with the light source, the LED lamp further comprises a connecting piece (3) having a second plug-in terminal (31) and an emergency module (4) having a third plug-in terminal (41), the connecting piece (3) and the emergency module (4) can be selectively operated, so that the LED lamp has the following two operating states: In the first operating state, the second plug-in terminal (31) of the connecting piece (3) is plugged with the first plug-in terminal (11) of the driving module (1), and the connecting piece (3) can conduct between the driving module (1) and the light source; In the second operating state, the third plug-in terminal (41) of the emergency module (4) is plugged with the first plug-in terminal (11) of the driving module (1), and the emergency module (4) can conduct between the light source, so as to drive the light source to work through the emergency module (4).

2. The LED light fixture of claim 1, wherein: 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 connected by a buckle structure respectively.

3. The LED light fixture of claim 1, wherein: The LED lamp further comprises a lamp holder (5), and the driving module (1) and the emergency module (4) are arranged on the lamp holder (5) in a detachable manner.

4. The LED lamp of any of claims 1-3, wherein: The driving module (1) has a power output positive electrode (12) and a power output negative electrode (13), the power module (2) comprises a zero line (N), a first live wire (L) and a second live wire (Lin), the first plug-in terminal (11) comprises eight interfaces, which are 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 with the positive electrode of the light source, the second interface (LED-) is connected with the negative electrode of the light source, the third interface (V+) is connected with the power output positive electrode (12) of the driving module (1), the fourth interface (V-) is connected with the power output negative electrode (13) of the driving module (1), the fifth interface (N) is connected with the zero line of the power module (2), the sixth interface (LOUT) is connected with the input end of the driving module (1), the seventh interface (L) is connected with the first live wire of the power module (2), and the eighth interface (LIN) is connected with the second live wire (Lin).

5. The LED light fixture of claim 4, wherein: In the first operating state, the connecting piece (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).

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

7. The LED light fixture of claim 6, wherein: The emergency module (4) further comprises a power supply circuit (47) and a switch module (48), the input end of the power supply circuit (47) is electrically connected with the battery (BATT) and the output end of the constant voltage circuit (45), the switch module (48) comprises a first relay (K2), the first relay (K2) comprises a first coil and a normally open contact which can act with the first coil, in the second working state, the normally open contact of the first relay (K2) is electrically connected with the sixth interface (LOUT) and the eighth interface (LIN) respectively, and the first coil is connected with the output end of the power supply circuit (47).

8. The LED light fixture of claim 7, wherein: 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 for switching the power supply source of the first interface (LED+) and the second interface (LED-), the output end of the emergency conversion circuit (46) is electrically connected with the input end of the boost circuit (49), the output end of the boost circuit (49) is electrically connected with the power supply switching circuit (40), and in the second working state, the output end of the power supply switching circuit (40) is electrically connected with the first interface (LED+), the second interface (LED-), the third interface (V+) and the fourth interface (V-).

9. The LED light fixture of claim 8, wherein: The power supply switching circuit (40) comprises a second relay (K1), the second relay (K1) comprises a second coil and two contact groups which can act with the second coil, each contact group comprises two static contacts and one moving contact, the two static contacts in one contact group are connected with the third interface (V+) and an output end of the boost circuit (49) respectively, the moving contact in the contact group is connected with the first interface (LED+), the two static contacts in the other contact group are connected with the fourth interface (V-) and another output end of the boost circuit (49) respectively, and the moving contact in the contact group is connected with the second interface (LED-), and the second coil is connected with the output end of the power supply circuit (47).

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

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