Lighting device

Abstract

To provide a lighting device which is further thinned by reducing the overall thickness, has a reduced number of parts required in assembly, and simplifies the assembly.SOLUTION: A lighting device comprises a circuit board 1, and a power supply terminal 2 of which one end is electrically connected with an external power supply and the other end is electrically connected with the circuit board 1, where the power supply terminal 2 and the circuit board 1 are connected to be integrally fixed.SELECTED DRAWING: Figure 2

Description

Technical Field

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[0001] The present disclosure relates to a lighting device.

Background Art

[0002] With the continuous development of lighting devices, the installation of lighting devices has become increasingly convenient. By installing an adapter for connecting the lighting device to the ceiling, the rapid installation of the lighting device can be facilitated.

[0003] In the lighting device described in Patent Document 1, the circuit board on which the light-emitting module of the lighting device is placed and the power supply terminal connected to an external power supply are two independent components. The power supply terminal is connected to the circuit board after being fixed to an intermediate member by screw connection or the like. Also, in order to stably make an electrical connection with the adapter, the power supply terminal needs to extend relatively long in the thickness direction of the lighting device, increasing the cost of the power supply terminal, occupying a large space, and being disadvantageous for thinning the lighting device. Further, since the circuit board and the power supply terminal are manufactured individually and then assembled and fixed, the assembly manufacturing process becomes complicated, the manufacturing cost increases, and the productivity decreases. Therefore, simplifying the configuration of the circuit board and the power supply terminal of the lighting device is an issue to be solved.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0006] The lighting device of this disclosure comprises a circuit board and a power terminal, one end of which is electrically connected to an external power supply and the other end of which is electrically connected to the circuit board, and the power terminal and the circuit board are integrally fixedly connected.

[0007] According to the above disclosure, the power terminal and the circuit board are integrally fixed together, which simplifies the configuration of the power terminal, reduces the space occupied by the power terminal within the lighting device, and contributes to making the lighting device thinner. Furthermore, by integrally fixing the circuit board and power terminal, which are conventionally assembled separately, the number of corresponding assembly steps is reduced, which contributes to improved productivity and reduced manufacturing costs.

[0008] Preferably, the power terminals and the circuit board may be fixedly connected by soldering.

[0009] According to the above disclosure, by fixing the power terminals and the circuit board by soldering, the connection between the power terminals and the circuit board can be made stronger, and compared to other electrical connection methods, soldering can relatively reduce the contact resistance between the power terminals and the circuit board.

[0010] Preferably, the power terminal has a live terminal and a neutral terminal, the neutral terminal is cylindrical, and the live terminal is elongated and may be located in the center of the neutral terminal.

[0011] According to the above disclosure, the neutral terminal is cylindrical, the live terminal is elongated, and is located in the center of the neutral terminal. Therefore, the live terminal maintains a certain distance from the neutral terminal to avoid the risk of short circuits due to them getting too close together. Furthermore, the cylindrical neutral terminal and the elongated live terminal located in the center can contact the neutral and live connection ports corresponding to the adapter during the rotational mounting of the lighting device, and there is no risk of deformation or poor contact due to the rotational mounting of the lighting device.

[0012] Preferably, the housing further includes an opening, a bottom plate portion surrounding the opening, and an extended stepped portion formed by extending along the bottom plate portion and bending parallel to the bottom plate portion, wherein the power terminals are provided on the side facing the extended stepped portion of the circuit board, and the extended stepped portion may be in close contact with the circuit board.

[0013] According to the above disclosure, the opening facilitates the insertion of an external power source, such as an adapter mounted on the ceiling, into the housing through the opening and electrically connecting it to the power terminals. Furthermore, since the circuit board is tightly fixed to the extended stepped portion, the mounting structure of the circuit board, which has a certain thickness, can be omitted, thereby reducing the thickness of the board mounting space and further reducing the thickness of the housing. In addition, since the circuit board is tightly fixed to the extended stepped portion, the contact area between them is sufficiently large, which can contribute to improving the strength and stability of the connection between the circuit board and the housing.

[0014] Preferably, the device further includes a support portion provided in the opening and integrally molded with and continuous to the opening, with one end of the support portion in contact with the circuit board.

[0015] According to the above disclosure, the support portion directly contacts the circuit board, eliminating the need for intermediate members, thereby reducing the overall thickness of the lighting device, and supporting the central position of the circuit board, contributing to the stability of the circuit board load.

[0016] Preferably, at least a portion of the electrical elements on the circuit board may be provided within a chamber formed by being surrounded by a bottom plate, an outer stepped portion, a circuit board, and a support portion.

[0017] According to the above disclosure, by placing some of the electrical elements of the circuit board in a chamber formed by being surrounded by the bottom plate, the circuit board, the extension step portion, and the support portion, the internal space of the housing can be appropriately utilized, and the overall structure of the housing can be made more compact. In addition, heat can be dissipated collectively from the electrical elements, improving the heat dissipation effect on the electrical elements.

[0018] Preferably, the system may further include a light-emitting module located on the same circuit board side as the power supply terminal pins.

[0019] According to the above disclosure, since the light-emitting module can emit light and realize an illumination function, the power terminals can be placed on one side and the light-emitting module on the other side, which allows for appropriate use of the space on the circuit board and contributes to reducing the area of ​​the circuit board.

[0020] Preferably, the lighting device may include an outer edge stepped portion that extends along the outer stepped portion and is bent parallel to the outer stepped portion, a globe fixing portion that extends along the outer edge stepped portion and is formed, and a globe that is fixedly connected to the globe fixing portion and covers the light-emitting module.

[0021] According to the above disclosure, the globe fixing portion, which is used for fixing the globe to the housing, allows the globe to be fixed and connected in close contact with the housing. Furthermore, since the outer edge step portion is formed by extending and bending the outer step portion, a certain distance can be maintained between the globe and the circuit board, reducing the granular appearance when the light-emitting module provided on the circuit board emits light, and making the light softer. In addition, the radial extension of the outer edge step portion allows the area of ​​the globe to be increased, which can contribute to widening the illumination range of the lighting device. [Effects of the Invention]

[0022] The lighting device according to the present disclosure can reduce the thickness of the entire lighting device, make the lighting device thinner, reduce the number of components required for assembling the lighting device, and simplify the assembly.

Brief Description of the Drawings

[0023] [Figure 1] It is an exploded view of the lighting device according to the embodiment. [Figure 2] It is a perspective view of the circuit board and the power supply terminal according to the embodiment. [Figure 3] It is a bottom view of the circuit board and the power supply terminal according to the embodiment. [Figure 4] It is a perspective view of the housing, the support part, and the adapter according to the embodiment. [Figure 5] It is a cross-sectional view of the lighting device according to the embodiment. [Figure 6] It is an enlarged view of the adapter in FIG. 4. [Figure 7] It is a front view of the lighting device according to the embodiment.

Modes for Carrying Out the Invention

[0024] Hereinafter, embodiments of the present disclosure will be clearly and detailedly described with reference to the drawings. However, it is clear that the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments that can be easily obtained by those skilled in the art belong to the protection scope of the present invention.

[0025] This disclosure provides a lighting device 100. Figure 1 is an exploded view of the lighting device 100 of this embodiment, and as shown in Figure 1, the lighting device 100 comprises a circuit board 1, a power terminal 2, and a housing 3. Figure 2 is a perspective view of the circuit board 1 and the power terminal 2 of this embodiment, and as shown in Figure 2, the power terminal 2 is provided in the center of the circuit board 1, and the power terminal 2 is electrically connected to the circuit board 1, and various electrical elements 11 of the lighting device 100 are provided on the circuit board 1. These electrical elements 11 may be capacitors, control modules, etc. Note that the contour shape of the electrical elements 11 in Figure 2 only indicates the installation location and approximate height of the electrical elements 11, and does not represent the actual product or the configuration of the electrical elements 11 in this disclosure.

[0026] The power terminal 2 and the circuit board 1 are integrally fixed together. Specifically, the "integrally fixed" configuration is a connection method that does not involve intermediate members. This integrally fixed connection method eliminates the need for intermediate members, which would normally have a certain thickness. As a result, the space occupied by the power terminal 2 in the thickness direction a of the lighting device 100 is reduced, contributing to a thinner lighting device 100. Furthermore, by directly fixing the circuit board 1 and the power terminal 2, which are indirectly fixed by intermediate members, the number of parts can be reduced. This reduces the number of parts required during manual or automated assembly before shipment of the lighting device 100, contributing to improved productivity and reduced manufacturing costs. In this embodiment, the power terminal 2 and the circuit board 1 are integrally fixed together by soldering, and the connection between the power terminal 2 and the circuit board 1 is made stronger by the fixed connection made by soldering. Furthermore, compared to other electrical connection methods, soldering can relatively reduce the contact resistance between the power terminals 2 and the circuit board 1, which is advantageous in reducing the amount of heat generated by the circuit board 1 when the lighting device 100 is in use. In addition, the fixing method by soldering is useful for realizing a fixed connection between the power terminals 2 and the circuit board 1 in an automated production process of PCB boards, especially single-sided boards. In other embodiments of this disclosure, other forms of integral fixing may be used, and are not particularly limited here.

[0027] The power terminal 2 includes a neutral terminal (grounded terminal) 21 and a live terminal (ungrounded terminal) 22. The neutral terminal 21 is cylindrical, and the live terminal 22 is elongated and located in the center of the neutral terminal 21. Both the neutral terminal 21 and the live terminal 22 are symmetrical around the center, making them suitable for rotational mounting. Both the live terminal 22 and the neutral terminal 21 are perpendicular to the circuit board 1, and the length in the thickness direction a is equal for both the live terminal 22 and the neutral terminal 21. This allows the neutral terminal 21 and the live terminal 22 to be simultaneously in contact or detached during attachment and detachment. Furthermore, to avoid the risk of short circuits due to them getting too close to each other, the live terminal 22 maintains a certain distance from the neutral terminal 21.

[0028] Figure 3 is a bottom view of the circuit board and power terminal according to an embodiment of the present disclosure. As shown in Figure 3, in this embodiment, the light-emitting module 12 is provided on the same side of the circuit board 1 as pin 23 of the power terminal 2. The light-emitting module 12 in this embodiment includes a plurality of LED (light-emitting diode) light-emitting units, and a drive circuit for the LED light-emitting units is formed on the circuit board 1. LEDs have high brightness, a long lifespan, and energy-saving effects. In other embodiments of the present disclosure, other forms of the light-emitting module 12 may be used.

[0029] The light-emitting module 12 includes a plurality of annular light strips of different radii arranged coaxially, each annular light strip containing a plurality of uniformly distributed LED light-emitting sections. In other embodiments of the present disclosure, the arrangement of the light-emitting module 12 on the circuit board 1 is adaptively adjusted as needed and is not limited to the arrangement according to this embodiment.

[0030] In this disclosure, "granularity" refers to the projection of bright spots that are relatively brighter than the surrounding areas at positions corresponding to the surface of the globe 6 by the light-emitting portion. The light-softening properties of the globe 6 itself cannot eliminate the presence of bright spots, leading to the occurrence of granularity.

[0031] Figure 4 is a perspective view of the housing 3, support 4, and adapter 200 according to an embodiment of the present disclosure. As shown in Figure 4, the housing 3 is a case that physically protects the internal electrical elements and prevents the entry of objects such as dust and insects, and the support 4 is a component for mounting the lighting device 100 to the ceiling or another location and is responsible for supporting the weight of at least part or all of the lighting device 100.

[0032] The lighting device 100 can be attached to the adapter 200, and the support portion 4 is used for a fixed connection with the adapter 200. In this embodiment, the support portion 4 may be fixed to the adapter 200 on the ceiling. The adapter 200 is a standard component that is usually pre-installed on the ceiling or other location for mounting the lighting device 100 or other electrical equipment.

[0033] An opening 31 is provided in the center of the housing 3, and the support portion 4 is continuous with and integrally molded with the opening 31, and extends along the thickness direction a of the lighting device 100. The adapter 200 is fitted into the housing 3 through the opening 31, and the outer edge of the adapter 200 is fixed so as to fit against the inner wall of the support portion 4. A fitting ring 41 is provided on the inner wall of the support portion 4, which fits against and engages with the outer edge of the adapter 200. By fitting the fitting ring 41 onto the outer edge of the adapter 200, the support portion 4 can be connected to the adapter 200 more firmly, and the stability of the mechanical connection structure can be improved.

[0034] In this embodiment, by providing an adapter 200 for connecting to the lighting device 100 at the mounting position of the lighting device 100 on the ceiling or other surface, the lighting device 100 can be quickly installed. The support part 4 fits to the outer edge of the adapter 200 so that the support part 4 and the adapter 200 can be firmly connected. The adapter 200 is fitted into the housing 3 through the opening 31, and the support part 4 extends in the thickness direction of the lighting device 100, surrounding the opening 31. As a result, once the installation is complete, the distance between the bottom of the lighting device 100 and the ceiling is effectively shortened. This structure makes full use of the internal space of the housing 3 and reduces the space occupied in the assembled state by reducing the distance between the bottom of the assembled lighting device 100 and the ceiling or other mounting surface.

[0035] The housing 3 further includes a bottom plate portion 32 surrounding the opening 31 and an extended stepped portion 33 that extends along the bottom plate portion 32 and is formed by bending parallel to the bottom plate portion 32, with the extended stepped portion 33 forming an annular shape overall.

[0036] Figure 5 is a cross-sectional view of the lighting device 100 according to an embodiment of the present disclosure. As shown in Figure 5, the outer edge of the circuit board 1 of the lighting device 100 and the lower surface of the extended stepped portion 33 are in close contact with each other. In this embodiment, since the circuit board 1 is fixed in close contact with the extended stepped portion 33, the mounting structure of the circuit board 1 having a certain thickness (i.e., when there is an intermediate member) can be omitted, and the thickness of the housing 3 can be reduced. In addition, since the circuit board 1 is fixed in close contact with the extended stepped portion 33, the contact area between them is sufficiently large, which can contribute to improving the strength and stability of the connection between the circuit board 1 and the housing 3. In this embodiment, the circuit board 1 and the extended stepped portion 33 are fixedly connected by screw connections, but in other embodiments of the present disclosure, they may be fixedly connected by means such as adhesive, and are not particularly limited here.

[0037] The circuit board 1 is tightly fixed to the extended stepped portion 33, and its annular local region near the center abuts against one end of the support portion 4 away from the opening 31, thereby supporting the central position of the circuit board 1 and contributing to the load stability of the circuit board 1. In this embodiment, by aligning the support portion 4 and the end of the extended stepped portion 33 adjacent to the circuit board 1 (i.e., the lower end in Figure 5), the position of the circuit board 1 is effectively determined by the extended stepped portion 33 and the support portion 4, ensuring that the circuit board 1 can be installed in the appropriate position and further improving the quality stability of the lighting device 100.

[0038] Furthermore, in this embodiment, since the support portion 4 is supported by an insulating plastic material, when the circuit board 1 is in contact with the support portion 4, there are no problems with conductivity or short circuits, making it safer.

[0039] The chamber 5, formed by the bottom plate portion 32, the outer stepped portion 33, the circuit board 1, and the support portion 4, is arranged such that at least a portion of the electrical elements 11 on the circuit board 1 are perpendicular to the circuit board 1.

[0040] In this embodiment, by placing some of the electrical elements 11 of the circuit board 1 within a chamber 5 formed by being surrounded by the bottom plate portion 32, the circuit board 1, the extension step portion 33, and the support portion 4, the internal space of the housing 3 is appropriately utilized, and the overall configuration of the housing 3 can be made more compact. Since the enclosed chamber 5 has a certain thickness, at least some of the electrical elements 11 on the circuit board 1 that have a certain height may be placed inside the chamber 5. Many of the electrical elements 11 that have a certain height, such as capacitors, are heat-generating elements in the control circuit of the lighting device 100, that is, electrical elements 11 that generate a relatively large amount of heat. By placing at least some of the electrical elements 11 together inside the chamber 5, the heat dissipation performance for these electrical elements 11 can be improved.

[0041] Figure 6 is an enlarged view of the adapter 200 in Figure 4. The power terminal 2 is provided coaxially with the fitting ring 41 of the support part 4 and fits into the terminal connection port 7 located in the center of the adapter 200 shown in Figure 6, thereby electrically connecting to the adapter 200.

[0042] During the process of attaching the lighting device 100 to the adapter 200, the connection between the power terminal 2 and the terminal connection port 7 is completed, and at the same time, the connection between the mating ring 41 and the fixing mechanism on the outer edge of the adapter 200 is also completed. The adapter 200 has a terminal connection port 7 for electrical connection and a mechanical mounting structure. By the above means, when attaching or detaching the lighting device 100 according to this embodiment, the mechanical and electrical connection or disconnection between the lighting device 100 and the adapter 200 can be completed simultaneously, making the attachment and detachment of the lighting device 100 easier.

[0043] Once assembled, the cylindrical neutral terminal 21 contacts the circular groove-shaped neutral connection port 71 of the adapter 200 in Figure 6, and the elongated live terminal 22 contacts the central live connection port 72 of the adapter 200 in Figure 6. The user can fix the lighting device 100 to the adapter 200 by rotational engagement, and the cylindrical neutral terminal 21 and the centrally located elongated live terminal 22 can contact the corresponding neutral connection port 71 and live connection port 72 of the adapter 200 while the lighting device 100 is rotating, and there is no risk of the electrical connection being broken by the rotational mounting of the lighting device 100.

[0044] Figure 7 is a front view of a lighting device 100 according to an embodiment of the present disclosure. As shown in Figure 7, the lighting device 100 further comprises a globe 6 provided to cover the front side of the housing 3. The front side of the housing 3 is the side closer to the user when the housing 3 is installed, and in this embodiment, it is the lower side in the thickness direction a in Figure 7. The housing 3 includes an outer edge stepped portion 34 that is extended along the outer stepped portion 33 and bent parallel to the outer stepped portion 33. Since the outer edge stepped portion 34 is formed by extending and bending the outer stepped portion 33, a certain distance can be maintained between the globe 6 and the circuit board 1 (shown in Figure 5), reducing the granularity when the light-emitting module 12 (shown in Figure 5) emits light, and making the light softer. Furthermore, the radial extension b of the outer edge stepped portion 34 increases the area of ​​the globe 6, which can contribute to widening the illumination range of the lighting device 100.

[0045] In this embodiment, the housing 3 includes a globe fixing portion 35 that extends along the outer edge step portion 34, and the globe 6 and the globe fixing portion 35 are fixedly connected to cover the light-emitting module 12. The globe 6 and the globe fixing portion 35 may be fixedly connected by screws, buckles, adhesive, or any other suitable means.

[0046] Those skilled in the art will understand that the specific technical features of each embodiment may be adaptively decomposed or combined. Such decomposition or combination of specific technical features does not deviate from the principles of the present invention, and the divided or combined technical features all fall within the scope of protection of the present invention. In the description of this application, unless otherwise explicitly stated, the meaning of "multiple" is two or more.

[0047] The foregoing is not intended to limit the present invention, but rather describes preferred embodiments of the invention, and any modifications, equivalent substitutions, and improvements made in accordance with the spirit of this disclosure are within the scope of protection of the present invention. [Explanation of symbols]

[0048] 100 Lighting device, 1 Circuit board, 11 Electrical element, 12 Light-emitting module, 2 Power terminal, 21 Neutral terminal, 22 Live terminal, 23 Pin, 3 Housing, 31 Opening, 32 Bottom plate, 33 Outer step, 34 Outer edge step, 35 Globe fixing part, 4 Support part, 41 Mating ring, 5 Chamber, 6 Globe, 200 Adapter, 7 Terminal connection port, 71 Neutral connection port, 72 Live connection port, a Thickness direction, b Radial direction

Claims

1. Circuit board and A lighting device comprising a power terminal having one end electrically connected to an external power supply and the other end electrically connected to the circuit board, The power terminal and the circuit board are integrally fixed and connected. A housing including an opening, a bottom plate portion surrounding the opening, and an extended stepped portion formed by extending along the bottom plate portion and bending parallel to the bottom plate portion, A support portion provided inside the opening, continuous with the opening and integrally molded with the opening, Furthermore, The power terminal is provided on the side of the circuit board facing the extended stepped portion, and the extended stepped portion is in close contact with the circuit board. The support portion is a member that fixes the adapter fitted into the opening, and extends along the thickness direction of the lighting device, surrounding the opening. A lighting device characterized in that one end of the support portion abuts against the circuit board.

2. The lighting device according to claim 1, characterized in that the power terminal and the circuit board are fixedly connected by soldering.

3. The lighting device according to claim 2, wherein the power terminal includes a live terminal and a neutral terminal, the neutral terminal is cylindrical, and the live terminal is elongated and located in the center of the neutral terminal.

4. The lighting device according to claim 1, characterized in that at least a portion of the electrical elements on the circuit board are provided in a chamber formed by being surrounded by the bottom plate portion, the extension step portion, the circuit board, and the support portion.

5. The lighting device according to any one of claims 1 to 3, further comprising a light-emitting module provided on the same circuit board side as the pins of the power terminals.

6. An outer edge step portion is formed by extending along the aforementioned outer step portion and bending it so as to be parallel to the aforementioned outer step portion, A glove fixing portion formed extending along the aforementioned outer edge step portion, The lighting device according to claim 1, further comprising a globe fixedly connected to the globe fixing portion.

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