Lamp

Abstract

The utility model relates to a lamp which comprises a light source, a driving module and an emergency module, and the driving module is electrically connected with the light source and used for driving the light source to work. The emergency module is used for supplying power to the light source after the driving module is powered off; the emergency module is electrically connected with the driving module and supplies power to the light source through the driving module. Compared with the prior art, the utility model has the advantages that the emergency module is electrically connected with the driving module instead of being connected with the light source, so that the stability can be improved, that is, the originally fixed connection between the driving module and the light source is stable enough; compared with the emergency module which needs to be connected with the drive and the light source, the stability of the mounting structure and the wiring of the wire are stable and simple.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a lamp. Background Technology

[0002] Most existing lighting fixtures are powered by mains electricity, so they cannot be used when the mains power is cut off. However, as users’ demand for lighting fixtures increases, there is a need for them to be able to work even after the mains power is cut off, in order to expand the application scenarios of the lighting fixtures.

[0003] To address the aforementioned technical issues, Chinese utility model patent ZL202122053609.3 (authorization announcement number CN215991294U) discloses a lighting fixture with an emergency module. This lighting fixture includes a drive unit, a switch, an emergency unit, and a light source. The input terminals of the drive unit and the emergency unit are connected to the live wire L and the neutral wire N. The input terminal of the drive unit is also connected to the switch, and the output terminals of the drive unit and the emergency unit are connected to the light source.

[0004] Although the aforementioned lighting fixtures, through the addition of an emergency unit, can trigger a built-in power outage start-up mode to supply power to the light source when the mains power grid fails, ensuring emergency lighting needs, and automatically stop supplying power to the light source when the mains power grid is restored, with the driver unit continuing to control the light source, thus providing illumination in both non-emergency and emergency situations, the above-mentioned lighting fixtures have the following limitations: Since many existing lighting fixtures do not include an emergency unit, adding one would require altering the circuitry connecting the driver unit directly to the light source. Therefore, further improvements to the existing technology are necessary. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a lamp that, in addition to the above-mentioned prior art, does not require changing the connection circuit between the drive module and the light source after adding an emergency module.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a lamp, including a light source, a driving module and an emergency module, wherein the driving module is electrically connected to the light source and is used to drive the light source to work; the emergency module is used to supply power to the light source after the driving module is powered off; characterized in that: the emergency module is electrically connected to the driving module and supplies power to the light source through the driving module.

[0007] Preferably, the driving module includes a driving unit, a power supply module electrically connected to the driving unit, and an expansion module electrically connected to the light source. The emergency module includes an emergency output module and a power supply switching circuit electrically connected to the emergency output module. The output terminal of the driving unit is also electrically connected to the power supply switching circuit, and the output terminal of the power supply switching circuit is electrically connected to the expansion module. The expansion module can also include additional functional modules (filtering, rectification, etc.) to expand the functionality of the lamp.

[0008] For ease of assembly and disassembly, the expansion module is provided with a first interface, and the emergency module is provided with a wiring terminal, which is electrically connected to the first interface by plugging in.

[0009] To improve the stability of the emergency module's output power, the expansion module is provided with a second interface for connecting a light source, and an inductor is provided between the first end of the second interface and the first end of the first interface.

[0010] Preferably, the power supply switching circuit includes a relay, the relay including a coil and two contact groups that actuate with the coil. Each contact group includes two stationary contacts and one moving contact. In one contact group, the two stationary contacts are electrically connected to the positive output terminal of the emergency output module and the positive output terminal of the drive unit, respectively, and the moving contact in this contact group is electrically connected to the positive terminal of the expansion module. In the other contact group, the two stationary contacts are electrically connected to the negative output terminal of the emergency output module and the negative output terminal of the drive unit, respectively, and the moving contact in this contact group is electrically connected to the negative terminal of the expansion module.

[0011] Preferably, the emergency module includes an AC-DC circuit that is electrically connected to the mains power supply, and the power supply switching circuit further includes a transistor. The base of the transistor is electrically connected to the output terminal of the AC-DC circuit through a first resistor. The emitter of the transistor is grounded. The collector of the transistor is electrically connected to one end of the coil of a relay. The other end of the coil of the relay is electrically connected to the output terminal of the AC-DC circuit.

[0012] Preferably, the emergency module further includes a battery and a charging circuit, wherein the charging circuit is electrically connected to the battery.

[0013] Preferably, the emergency module further includes a switch module, the input terminal of which is electrically connected to the output terminal of the battery and the AC-DC circuit, respectively, and the output terminal of which is electrically connected to the charging circuit.

[0014] Preferably, the emergency module further includes an emergency switching circuit, which is electrically connected to the output terminal of the switch module and the output terminal of the emergency switching circuit is electrically connected to the input terminal of the emergency output module.

[0015] Preferably, the emergency module further includes a detection module for detecting whether the battery is in place and a controller electrically connected to the detection module.

[0016] Compared with the prior art, the advantages of this utility model are: by electrically connecting the emergency module and the drive module, the drive module supplies power to the light source, without the need for the emergency module to be connected to the light source, which can improve stability. That is, the connection between the drive module and the light source, which is already fixed, is stable enough. The emergency module, as an added module, is more stable and simpler in terms of the stability of the installation structure and the routing of the wires compared to the emergency module, which needs to be connected to both the drive module and the light source. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the lamp in the embodiment of this utility model;

[0018] Figure 2 This is a circuit diagram of the driving module in an embodiment of the present invention;

[0019] Figure 3 This is a circuit diagram of the emergency output module in an embodiment of this utility model;

[0020] Figure 4 This is a circuit diagram of the power supply switching circuit in an embodiment of the present invention;

[0021] Figure 5 This is a circuit diagram of the AC-DC circuit in an embodiment of this utility model;

[0022] Figure 6 This is a circuit diagram of the switch module in an embodiment of the present invention;

[0023] Figure 7 This is a circuit diagram of the emergency switching circuit, battery, charging circuit, and detection module in an embodiment of this utility model;

[0024] Figure 8 This is a circuit diagram of the controller and its peripheral circuits in an embodiment of this utility model. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-8 As shown, the lamp in this embodiment includes a light source 3, a driving module 1, and an emergency module 2. The driving module 1 is electrically connected to the light source 3 and is used to drive the light source 3 to work. The emergency module 2 is used to supply power to the light source after the driving module 1 is powered off. The emergency module 2 is electrically connected to the driving module 1.

[0027] In order to achieve electrical connection between emergency module 2 and drive module 1, and to power the light source 3 through drive module 1, in this embodiment, as follows: Figure 2As shown, the drive module 1 includes a drive unit 11, a power supply module 12 electrically connected to the drive unit 11, and an expansion module 13 electrically connected to the light source 3. The drive unit 11 and the power supply module 12 are existing technologies and will not be described in detail here. Figure 3 and Figure 4 As shown, the emergency module 2 includes an emergency output module 21 and a power supply switching circuit 22 electrically connected to the emergency output module 21. The output terminal of the drive unit 11 is also electrically connected to the power supply switching circuit 22, and the output terminal of the power supply switching circuit 22 is electrically connected to the expansion module 13. The expansion module 13 can be used simply as a wiring terminal, or it can be used as a functional module with rectification and filtering functions.

[0028] Additionally, emergency module 2 includes an AC-DC circuit 23 connected to mains power, a battery BATT, a charging circuit 24, a switch module 25, an emergency switching circuit 26, a detection module 27 for detecting whether the battery BATT is in place, and a controller U2 electrically connected to the detection module 27. Figure 5 As shown, the output terminal of the AC-DC circuit 23 is DC+; the charging circuit 24 is electrically connected to the battery BATT; as Figure 6 As shown, the input terminal of switch module 25 is electrically connected to the output terminals of battery BATT and AC-DC circuit 23, respectively. The output terminal of switch module 25 is electrically connected to charging circuit 24, and the output terminal of switch module 25 is VC+. Emergency switching circuit 26 is electrically connected to the output terminal of switch module 25, and the output terminal of emergency switching circuit 26 is electrically connected to the input terminal of emergency output module 21. Emergency module 2 also includes a detection module 27 for detecting whether battery BATT is in place and a controller U2 electrically connected to detection module 27. The detection module 27 is specifically as follows: Figure 7 As shown in the diagram. Emergency module 2 is also electrically connected to mains power to power the aforementioned BATT battery.

[0029] like Figure 4As shown, the power supply switching circuit 22 in this embodiment includes a relay K1 and a transistor Q1. The relay K1 includes a coil and two contact groups that move with the coil. Each contact group includes two stationary contacts and one moving contact. The two stationary contacts in one contact group are electrically connected to the positive output terminal YJDC+ of the emergency output module 21 and the positive output terminal QDLED+ of the drive unit 11, respectively. The moving contact in this contact group is electrically connected to the positive terminal DBLED+ of the expansion module 13. The two stationary contacts in the other contact group are electrically connected to the positive output terminal QDLED+ of the expansion module 13. The contacts are electrically connected to the negative terminal YJDC- of the emergency output module 21 and the negative terminal QDLED- of the drive unit 11, respectively. The moving contact in this contact group is electrically connected to the negative terminal DBLED- of the expansion module 13. The base of transistor Q1 is electrically connected to the output terminal of AC-DC circuit 23 through the first resistor R51. The emitter of transistor Q1 is grounded. The collector of transistor Q1 is electrically connected to one end of the coil of relay K1. The other end of the coil of relay K1 is electrically connected to the output terminal of AC-DC circuit 23.

[0030] Emergency module 2 is equipped with terminal block CN1, such as Figure 4 As shown, the positive output terminal QDLED+ of the drive unit 11, the negative output terminal QDLED- of the drive unit 11, the positive terminal DBLED+ of the expansion module 13, and the negative terminal DBLED- of the expansion module 13 are all electrically connected to the terminal CN1; Figure 2 As shown, the expansion module 13 is provided with a first interface J3; the terminal CN1 is electrically connected to the interface J3 by plugging in. The expansion module 13 is provided with a second interface J2 for plugging in the light source 3. An inductor L10 is also provided between the first end of the second interface J2 and the first end of the first interface J2. The inductor L10 can improve the stability of the output power of the emergency module.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lighting fixture, comprising a light source (3), a driving module (1), and an emergency module (2), wherein the driving module (1) is electrically connected to the light source (3) and is used to drive the light source (3) to work; the emergency module (2) is used to supply power to the light source (3) after the driving module (1) is powered off; characterized in that: The emergency module (2) is electrically connected to the drive module (1) and supplies power to the light source (3) through the drive module (1).

2. The lamp according to claim 1, characterized in that: The drive module (1) includes a drive unit (11), a power supply module (12) electrically connected to the drive unit (11), and an expansion module (13) electrically connected to the light source (3). The emergency module (2) includes an emergency output module (21) and a power supply switching circuit (22) electrically connected to the emergency output module (21). The output terminal of the drive unit (11) is also electrically connected to the power supply switching circuit (22), and the output terminal of the power supply switching circuit (22) is electrically connected to the expansion module (13).

3. The lamp according to claim 2, characterized in that: The expansion module (13) is provided with a first interface (J3), and the emergency module (2) is provided with a terminal block (CN1). The terminal block (CN1) is electrically connected to the first interface (J3) by plugging in.

4. The lamp according to claim 3, characterized in that: The expansion module (13) is provided with a second interface (J2) for the light source (3) to be plugged in, and an inductor (L10) is provided between the first end of the second interface (J2) and the first end of the first interface (J3).

5. The lamp according to claim 2, characterized in that: The power supply switching circuit (22) includes a relay (K1), which includes a coil and two contact groups that move with the coil. Each contact group includes two stationary contacts and one moving contact. The two stationary contacts in one contact group are electrically connected to the positive output terminal (YJDC+) of the emergency output module (21) and the positive output terminal (QDLED+) of the drive unit (11), respectively. The moving contact in this contact group is electrically connected to the positive terminal (DBLED+) of the expansion module (13). The two stationary contacts in the other contact group are electrically connected to the negative output terminal (YJDC-) of the emergency output module (21) and the negative output terminal (QDLED-) of the drive unit (11), respectively. The moving contact in this contact group is electrically connected to the negative terminal (DBLED-) of the expansion module (13).

6. The lamp according to claim 5, characterized in that: The emergency module (2) includes an AC-DC circuit (23) connected to the mains power supply. The power supply switching circuit (22) also includes a transistor (Q1). The base of the transistor (Q1) is electrically connected to the output terminal of the AC-DC circuit (23) through a first resistor (R51). The emitter of the transistor (Q1) is grounded. The collector of the transistor (Q1) is electrically connected to one end of the coil of the relay (K1). The other end of the coil of the relay (K1) is electrically connected to the output terminal of the AC-DC circuit (23).

7. The lamp according to claim 6, characterized in that: The emergency module (2) also includes a battery (BATT) and a charging circuit (24), the charging circuit (24) being electrically connected to the battery (BATT).

8. The lamp according to claim 7, characterized in that: The emergency module (2) also includes a switch module (25), the input terminal of which is electrically connected to the output terminal of the battery (BATT) and the AC-DC circuit (23), respectively, and the output terminal of the switch module (25) is electrically connected to the charging circuit (24).

9. The lamp according to claim 8, characterized in that: The emergency module (2) further includes an emergency switching circuit (26), which is electrically connected to the output terminal of the switch module (25) and the output terminal of the emergency switching circuit (26) is electrically connected to the input terminal of the emergency output module (21).

10. The lamp according to claim 7, characterized in that: The emergency module (2) also includes a detection module (27) for detecting whether the battery (BATT) is in place and a controller (U2) electrically connected to the detection module (27).

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