Lamp with double DC interfaces

Abstract

The utility model discloses a lamp with double DC connectors, relates to the technical field of lighting equipment, and aims to solve the problems of complicated wiring and inconvenience in installation caused by position limitation of a socket of a traditional lamp with a single DC connector. A first packaging head and a second packaging head are arranged at the two ends of a long-strip-shaped lamp holder shell respectively, DC connectors are correspondingly installed on the packaging heads, and a circuit board is connected with the double DC connectors through a switching circuit containing diodes and matched with a power management module to achieve automatic power supply switching. The double-interface layout allows a user to select an access direction according to the position of the socket without winding; the diode switching circuit prevents dual-power conflict and ensures safe and stable power supply; and the modular packaging structure strengthens the stability and compatibility of the joint. The utility model is suitable for low-voltage lamps such as LED table lamps, atmosphere lamps and the like, improves the installation flexibility and user experience, and has the advantages of simple structure and controllable cost.

Description

A luminaire with dual DC interfaces Technical Field

[0001] This utility model relates to the field of lighting equipment technology, specifically to a lamp with dual DC interfaces, suitable for scenarios such as LED desk lamps, surface light strip lamps, and ambient lights that require flexible adaptation to the power interface position. Background Technology

[0002] Existing low-voltage lighting fixtures, such as LED table lamps and ambient lights, typically connect to an external power adapter via a single DC interface (DC power interface) for safe and stable power supply. While DC interfaces offer advantages such as high safety and compact size, their single-mode configuration has significant limitations: during actual installation or use, the wall socket may be located to the left or right of the fixture. If the socket and the fixture's DC interface face opposite directions, the user must route the power cord behind or to the side of the fixture, resulting in messy wiring and affecting aesthetics. Furthermore, pulling on the cable can cause the fixture to loosen, and may even pose a safety hazard due to poor interface contact. In addition, traditional lighting fixtures often have a direct hard connection between the DC interface and the circuit board, lacking a flexible switching mechanism and unable to adapt to different power input directions, reducing the product's ease of use and user experience. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a lamp with dual DC interfaces.

[0004] According to the embodiments of this utility model, the first embodiment is provided as follows: a lamp with dual DC interfaces, including a long strip lamp head shell, wherein a first encapsulation head and a second encapsulation head are provided at both ends of the long side of the long strip lamp head shell, a first DC connector is provided on the first encapsulation head, and a second DC connector is provided on the second encapsulation head, and the circuit board inside the long strip lamp head shell is connected to an external power source through the first DC connector or the second DC connector.

[0005] Furthermore, the circuit board is connected to the first DC connector and the second DC connector via a switching circuit.

[0006] Furthermore, a control chip is provided on the circuit board, and the control chip controls the switching circuit to be connected to the first DC connector or the second DC connector.

[0007] Furthermore, the switching circuit includes two diodes mounted on the circuit board. The two diodes are connected in series in the positive paths of the first DC connector and the second DC connector, respectively. The positive terminals of the diodes are connected to the first DC connector and the second DC connector, and the negative terminals of the diodes are connected to the power management module. The power management module includes a voltage regulation chip, a filter circuit, protection devices, and a control logic unit.

[0008] Furthermore, the first encapsulation head is the same as the second encapsulation head, and the position of the first DC connector on the first encapsulation head is the same as the position of the second DC connector on the second encapsulation head.

[0009] Furthermore, the first DC connector includes an insulating housing, contact terminals, and a fixing assembly.

[0010] Furthermore, the first encapsulation head includes a main shell, an upper encapsulation plate, a side encapsulation plate, and an outer shell. The upper encapsulation plate and the side encapsulation plate cooperate to fix the outer shell onto the main shell. The main shell is connected to the elongated lamp holder outer shell. The first DC connector is disposed at the mounting position of the main shell and is limited by the outer shell. The outer shell is provided with a first DC socket for the contact terminals of the first DC connector to be connected to an external power source.

[0011] Furthermore, the external power supply includes a DC plug, a power cord, and a power plug. The DC plug is connected to the contact terminal of the first DC connector through the first DC socket on the first package head and supplies power to the circuit board.

[0012] Compared with existing technologies, the technical solution provided in this application offers unique advantages: lamps with dual DC interfaces boast superior structural stability and compatibility. The DC connectors are located inside the elongated lamp holder housing, resulting in a more stable connection and improved stability during plugging and unplugging. External power is connected via a DC plug inserted into the DC socket and the contact terminals of the DC connector. The standardized structure is compatible with common DC power adapters. This invention effectively solves the problems of inconvenient installation and messy wiring associated with traditional single-interface lamps through a synergistic design of dual DC connector layout, automatic switching circuit, modular packaging, and integrated power management. It also improves power supply stability and user ease of operation. Its simple structure and controllable cost make it widely applicable to various low-voltage DC lamps, demonstrating significant practical value and market potential. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] in:

[0015] Figure 1 is a schematic diagram of the overall structure of a lamp with dual DC interfaces in one embodiment;

[0016] Figure 2 is a schematic diagram of the structure of the first package head of a lamp with dual DC interfaces in one embodiment;

[0017] Figure 3 is a schematic diagram of the structure of the first DC connector of a lamp with dual DC interfaces in one embodiment.

[0018] Figure label:

[0019] 10-Elongated lamp holder housing; 11-First encapsulation head; 12-Second encapsulation head; 111-Main housing; 112-Upper encapsulation plate; 113-Housing housing; 20-First DC socket; 211-Insulating housing; 212-Fixing assembly; 213-Contact terminal. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Example 1

[0022] This embodiment provides a lamp with dual DC interfaces, which is specifically suitable for scenarios such as LED desk lamps, surface light strip lamps, and ambient lights that require flexible adaptation to the power interface position.

[0023] Existing low-voltage lighting fixtures, such as LED table lamps and ambient lights, typically connect to an external power adapter via a single DC interface for safe and stable power supply. While DC interfaces offer advantages like high safety and compact size, their single-mode configuration has significant limitations: during actual installation or use, the wall socket may be located to the left or right of the fixture. If the socket and the fixture's DC interface face opposite directions, the user must route the power cord behind or to the side of the fixture, resulting in messy wiring and affecting aesthetics. Furthermore, pulling on the cable can cause the fixture to loosen, and even pose a safety hazard due to poor interface contact. In addition, traditional lighting fixtures often have a direct hard connection between the DC interface and the circuit board, lacking a flexible switching mechanism and unable to adapt to different power input directions, reducing product usability and user experience.

[0024] As shown in Figure 1, the lamp in this embodiment has a first encapsulation head 11 and a second encapsulation head 12 at both ends of the long side of the elongated lamp head housing 10. A first DC connector is provided on the first encapsulation head 11 and a second DC connector is provided on the second encapsulation head 12. The circuit board inside the elongated lamp head housing 10 is connected to an external power source through the first DC connector or the second DC connector.

[0025] Users can choose any DC connector to connect to the power source based on the location of the wall socket (left or right), eliminating the need for winding cables, greatly simplifying the wiring process and improving the overall aesthetics of the installed light fixture. The symmetrical dual-interface design ensures that there is no difference in the left or right installation direction of the light fixture, reducing the complexity of user operation and adapting to the usage needs of different scenarios.

[0026] The specific internal circuit structure design method is as follows: The circuit board is connected to the dual DC connectors via a switching circuit. The switching circuit includes two diodes, each connected in series in the positive path of the two DC connectors. The negative terminals of the diodes are connected to the power management module. The control chip automatically coordinates the dual-interface power supply logic by monitoring the input voltage. The unidirectional conductivity of the diodes avoids current conflicts when both interfaces are connected to power simultaneously, ensuring that only one path is powered, preventing short circuits or component damage. No manual operation is required: the circuit automatically switches interfaces without the need for an additional switch, improving user convenience. Combined with the intelligent monitoring of the control chip, the power connection status can be fed back in real time, enhancing system stability.

[0027] As shown in Figure 2, the lamp in this embodiment adopts modular packaging to enhance the durability and safety of the lamp: the packaging head adopts a modular design of main shell 111 + upper packaging plate 112 + side packaging plate + outer shell 113. The DC connector is limited to the mounting position of the main shell 111 by the outer shell 113, the contact terminal 213 is exposed through the DC socket, and the external power supply is connected to the terminal through the DC plug.

[0028] Specifically, as shown in Figure 3, the first DC connector includes an insulating shell 211, contact terminals 213, and a fixing assembly 212. The first encapsulation head 11 includes a main shell 111, an upper encapsulation plate 112, a side encapsulation plate, and a shell 113. The upper encapsulation plate 112 and the side encapsulation plate cooperate to fix the shell 113 onto the main shell 111. The main shell 111 is connected to the elongated lamp holder shell 10. The first DC connector is disposed at the mounting position of the main shell 111 and is defined by the shell 113. The shell 113 is provided with a first DC socket 20 for the contact terminals 213 of the first DC connector to connect to an external power source. The external power source includes a DC plug, a power cord, and a power plug. The DC plug connects to the contact terminals 213 of the first DC connector through the first DC socket 20 on the first encapsulation head 11 and supplies power to the circuit board.

[0029] The secure fit between the encapsulation board and the housing 113 prevents the DC connector from loosening due to insertion and removal forces, thus improving product durability. The isolation design between the insulating housing 211 and the contact terminals 213 reduces the risk of electric shock. The standardized structure of the DC connector is compatible with common DC power adapters on the market (such as 12V / 24V specifications), eliminating the need for customized power supplies and reducing user costs.

[0030] Furthermore, this luminaire employs integrated power management to optimize power distribution: the power management module integrates a voltage regulation chip, filtering circuit, and protection devices. After receiving input from dual DC connectors, it distributes stable voltages to the control chip, LED driver circuit, and other components on the circuit board. Through a DC-DC conversion circuit, the input voltage is precisely adjusted to the required parameters for each module; for example, 5V is supplied to the control chip, and 3.3V to the sensors, improving energy efficiency. Multiple protection mechanisms, including overvoltage, overcurrent, and short-circuit protection, enable rapid response to abnormal situations, preventing damage to the core components of the luminaire from external power fluctuations and extending the product's lifespan.

[0031] This invention effectively solves the problems of inconvenient installation and messy wiring in traditional single-interface lighting fixtures through a synergistic design of dual DC connector layout, automatic switching circuit, modular packaging, and integrated power management. It also improves power supply stability and user ease of operation. Its simple structure and controllable cost make it widely applicable to various low-voltage DC lighting fixtures, demonstrating significant practical value and market potential.

[0032] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application's patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0035] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

Claims

1. A lamp with dual DC interfaces, characterized in that, The device includes a long strip-shaped lamp head housing, with a first encapsulation head and a second encapsulation head at each end of the long side of the long strip-shaped lamp head housing. A first DC connector is provided on the first encapsulation head, and a second DC connector is provided on the second encapsulation head. The circuit board inside the long strip-shaped lamp head housing is connected to an external power source through the first DC connector or the second DC connector.

2. The luminaire with dual DC interfaces according to claim 1, characterized in that, The circuit board is connected to the first DC connector and the second DC connector via a switching circuit.

3. The luminaire with dual DC interfaces according to claim 2, characterized in that, The circuit board is equipped with a control chip, which controls the switching circuit to connect to either the first DC connector or the second DC connector.

4. The luminaire with dual DC interfaces according to claim 2, characterized in that, The switching circuit includes two diodes mounted on a circuit board. The two diodes are connected in series in the positive paths of the first DC connector and the second DC connector, respectively. The positive terminals of the diodes are connected to the first DC connector and the second DC connector, and the negative terminals of the diodes are connected to the power management module. The power management module includes a voltage regulation chip, a filter circuit, protection devices, and a control logic unit.

5. The luminaire with dual DC interfaces according to claim 1, characterized in that, The first encapsulation head is the same as the second encapsulation head, and the position of the first DC connector on the first encapsulation head is the same as the position of the second DC connector on the second encapsulation head.

6. The luminaire with dual DC interfaces according to claim 1, characterized in that, The first DC connector includes an insulating housing, contact terminals, and a fixing component.

7. The luminaire with dual DC interfaces according to claim 6, characterized in that, The first encapsulation head includes a main shell, an upper encapsulation plate, a side encapsulation plate, and an outer shell. The upper encapsulation plate and the side encapsulation plate cooperate to fix the outer shell onto the main shell. The main shell is connected to the elongated lamp holder outer shell. The first DC connector is disposed at the mounting position of the main shell and is limited by the outer shell. The outer shell is provided with a first DC socket for the contact terminals of the first DC connector to be connected to an external power source.

8. The luminaire with dual DC interfaces according to claim 7, characterized in that, The external power supply includes a DC plug, a power cord, and a power plug. The DC plug is connected to the contact terminal of the first DC connector through the first DC socket on the first package head and supplies power to the circuit board.

Images