Small panel lamp capable of adjusting color temperature

Abstract

The utility model relates to a small panel lamp capable of adjusting color temperature, which comprises a shell and a cavity with a downward opening, the light source plate is arranged in the shell; the diffusion plate is arranged in the shell and located below the diffusion plate; the upper end of the color temperature adjusting device is connected with the light source plate, and the lower end is contacted with the diffusion plate; a positioning groove is formed in the inner circumferential wall of the shell, and the edge of the diffusion plate is clamped in the positioning groove; when the diffusion plate is pressed upwards, the diffusion plate transmits pressing force to the color temperature adjusting device, and then the color temperature adjusting device adjusts the light emitting color temperature of the light source plate. The edge of the diffusion plate is directly clamped on the inner wall of the first ring wall of the shell, and the diffusion plate is directly connected with the shell to form an appearance surface of the small panel lamp, so that the appearance of the small panel lamp is simple; the reflection cup for separating the main lamp light source from the night lamp light source is arranged in the shell, and the reflection cup is packaged in the shell, so that the small panel lamp is simple in structure under the condition that the night lamp function is set.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting fixtures, in particular to a small panel light with adjustable color temperature. Background Art

[0002] The LED panel light is a lighting product with beautiful design and soft light, which is widely used in various places such as offices, schools, hospitals, shopping malls, and homes. According to the light-emitting principle, the LED panel light is mainly divided into two types: side-emitting and direct-down emission, and both of them need to be used with a driving power supply.

[0003] In recent years, people have paid more and more attention to healthy lighting, and color temperature adjustment is closely related to healthy lighting. Healthy lighting emphasizes providing appropriate illuminance and color temperature according to people's needs to improve and enhance people's quality of life and promote psychological and physiological health. For example, a color temperature of 5000K is beneficial for learning and working during the day, while a color temperature of 4000K helps reduce brain fatigue and promote sleep at night.

[0004] As disclosed in a Chinese utility model patent with an application number of 202420735677.9 by the applicant, a downlight includes a housing, a light source board, and a diffuser board. The housing has a downward opening. The light source board and the diffuser board are both horizontally arranged inside the housing shell. The diffuser board is located below the light source board. A color temperature adjustment switch for adjusting the light-emitting color temperature of the light source board is arranged on one side of the light source board close to the diffuser board. A pressing transmission member is arranged between the color temperature adjustment switch and the diffuser board. In the state where the diffuser board is pressed from bottom to top, the diffuser board pushes the pressing transmission member upward, so that the pressing transmission member presses the color temperature adjustment switch, and then the color temperature adjustment switch adjusts the light-emitting color temperature of the light source board. The above downlight structure also has a night light function. Specifically, a reflector cup is arranged inside the housing. The small-diameter end of the reflector cup is connected to the lower surface of the light source board and separates the main light source and the night light source on the light source board. The diffuser board is clamped on the inner ring wall of the large-diameter end of the reflector cup, and a night light diffusion ring is arranged in the gap between the outer ring wall of the large-diameter end of the reflector cup and the housing.

[0005] In the above structure, the diffuser board is clamped on the inner ring wall of the large-diameter end of the reflector cup, and a night light diffusion ring needs to be arranged in the gap between the outer ring wall of the large-diameter end of the reflector cup and the housing. The structure of the whole downlight is complex, and the connection structure between the components inside the housing can be seen, which is not beautiful enough. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a small panel light with adjustable color temperature that has a simple structure and is more beautiful in view of the current situation of the prior art.

[0007] The technical solution adopted by the present utility model to solve the above technical problems is as follows: An adjustable color temperature small panel light, comprising a housing, the housing having a cavity opening downward; a light source board, the light source board being disposed inside the housing; a diffusion board, the diffusion board being disposed inside the housing and below the light source board; a color temperature adjustment device, the upper end of the color temperature adjustment device being connected to the light source board, and the lower end of the color temperature adjustment device being in contact with the diffusion board; a positioning groove is provided on the inner peripheral wall of the housing, and the edge of the diffusion board is snap-fitted into the positioning groove; in a state where the diffusion board is pressed upward, the diffusion board transmits the pressing force to the color temperature adjustment device, and then the color temperature adjustment device adjusts the emission color temperature of the light source board. The edge of the diffusion board is snap-fitted into the positioning groove and is not easily displaced. By pressing the diffusion board upward, the diffusion board transmits the pressing force to the color temperature adjustment device, and the color temperature adjustment device is pressed to change the emission color temperature of the light source board.

[0008] Preferably, the housing includes a top shell and a first annular wall extending downward from the edge of the top shell. The light source board and the diffusion board are both horizontally disposed inside the housing. The positioning groove is provided on the inner wall of the first annular wall; along the radially outward direction of the diffusion board, the edge of the diffusion board extends upward and obliquely with a second annular wall, and a convex portion that can be snapped into the positioning groove is provided on the outer peripheral wall of the second annular wall. For the convenience of processing, the positioning groove is provided in a whole circle along the circumferential direction of the first annular wall, and the convex portion is also correspondingly a whole circle; in other embodiments, the positioning groove can also be provided at intervals along the circumferential direction of the first annular wall, and the convex portion is also provided at intervals correspondingly.

[0009] To improve the lighting effect, the small panel light further includes a reflector cup disposed between the light source board and the diffusion board. The reflector cup has a large-diameter end and a small-diameter end along the axis. The small-diameter end of the reflector cup is connected to the lower surface of the light source board, and the large-diameter end of the reflector cup is in contact with the upper surface of the diffusion board.

[0010] To add a night light function, a main light source and a night light source are provided on the light source board. The main light source is disposed at the center of the lower surface of the light source board, and the night light source is arranged around the main light source; the small-diameter end of the reflector cup separates the main light source and the night light source, and there is a gap between the large-diameter end of the reflector cup and the housing, and the light generated by the night light source is irradiated onto the diffusion board through the gap.

[0011] To improve the structural stability of the small panel light, both the light source board and the reflector cup are connected to the top shell by screws. In other embodiments, the light source board and the reflector cup can be encapsulated inside the housing by the diffusion board, but such a design has relatively high requirements for the snap-fitting firmness between the diffusion board and the first annular wall.

[0012] To prevent the light from the night light source from being blocked and shining on the diffusion plate, a threaded hole connected to the screw is provided at the small-diameter end of the reflector cup. The threaded hole is provided at the small-diameter end of the reflector cup, which will neither affect the lighting effect of the main light source nor the lighting effect of the night light source.

[0013] To quickly align the positions of the light source board and the reflector cup when connecting them with screws, a positioning post protruding upward is provided at the small-diameter end of the reflector cup, and a positioning hole for the positioning post to pass through is provided on the light source board.

[0014] Preferably, an edge ring extends radially outward along the lower end of the first annular wall, and a washer is provided on the edge ring.

[0015] Preferably, the small panel light further includes a signal line connected to the light source board, and an outlet hole for the signal line to pass through is provided on the top of the shell.

[0016] Preferably, the color temperature adjustment device includes a color temperature adjustment switch and a pressing transmission member. The color temperature adjustment switch is provided on one side of the light source board close to the diffusion plate, and a pressing transmission member is provided between the color temperature adjustment switch and the diffusion plate. In the state where the diffusion plate is pressed from bottom to top, the diffusion plate transfers the pressing force to the pressing transmission member, so that the pressing transmission member presses the color temperature adjustment switch, and then the color temperature adjustment switch adjusts the emission color temperature of the light source board.

[0017] To facilitate the pressing transmission member to accurately transfer the minute deformation of the diffusion plate to the color temperature adjustment switch, the color temperature adjustment switch is a touch switch, which includes a switch body and a button provided below the switch body, and the pressing transmission member can press the button. The button is provided below the switch body, which also reduces the distance between the diffusion plate and the color temperature adjustment switch, facilitating transmission.

[0018] To enable the pressing transmission member to act accurately on the button, an upward-opening receiving groove is provided at the upper end of the pressing transmission member, and the button is received in the receiving groove. The button being received in the receiving groove can position the pressing transmission member, enabling the pressing transmission member to be vertically arranged between the color temperature adjustment switch and the diffusion plate without tilting without relying on other structures.

[0019] In other embodiments, the upper end of the pressing transmission member can also be fixedly connected to the button, such as by bonding.

[0020] Preferably, the accommodating groove includes a large groove and a small groove that communicate with each other. The small groove is located at the center below the large groove. The switch body is accommodated in the large groove, and the button is accommodated in the small groove. The distance between the lower end surface of the button and the bottom wall of the small groove is less than the distance between the lower end surface of the switch body and the bottom wall of the large groove. The distance between the lower end surface of the switch body and the bottom wall of the large groove can provide a clearance for the pressing transmission member to press the button upward.

[0021] To reduce the volume of the pressing transmission member and thus reduce its influence on light transmission, the pressing transmission member includes a large-diameter section, a medium-diameter section, and a small-diameter section from top to bottom. The large groove is located within the large-diameter section, the small groove is located within the medium-diameter section, and the outer diameter of the small-diameter section gradually decreases from top to bottom.

[0022] To prevent the pressing transmission member from shifting in the vertical direction, the inner side wall of the small groove fits with the button, and the inner side wall of the large groove fits with the switch body. The tight fit between the small groove and the button, and between the large groove and the switch body in the horizontal direction can prevent the pressing transmission member from tilting and ensure the effectiveness of the transmission.

[0023] Preferably, the lower end surface of the pressing transmission member contacts the upper surface of the diffusion plate, and the lower end surface of the button contacts the bottom wall of the small groove. When the user presses a specific point on the diffusion plate, the diffusion plate undergoes a slight deformation, and the deformation of the diffusion plate is transmitted to the lower end surface of the pressing transmission member, and then the pressing transmission member presses the button.

[0024] To enable the diffusion plate to undergo a sufficient deformation when pressed, the color temperature adjustment switch is provided at the center of the lower surface of the light source plate, and the lower end surface of the pressing transmission member contacts the center of the diffusion plate. Since the light source plate is fixedly connected to the housing through its edge, when an external force is applied in the vertical direction, the center of the light source plate is more likely to deform than the edge of the light source plate.

[0025] To reduce the influence of the pressing transmission member on light transmission, the pressing transmission member is made of a transparent material.

[0026] Compared with the prior art, the advantages of the present utility model are as follows: The edge of the diffusion plate is directly snap-fitted on the inner wall of the first annular wall of the housing. The diffusion plate is directly connected to the housing and forms the appearance surface of the small panel light, making the appearance of the small panel light simple. And a reflecting cup for separating the main light source and the night light source is provided inside the housing, and the reflecting cup is encapsulated in the housing, so that the small panel light can also have a simple structure when the night light function is provided.

[0027] BRIEF DESCRIPTION OF THE DRAWINGS BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the small panel light in the embodiment of the present utility model;

[0029] Figure 2 is Figure 1 Exploded view of the small panel light;

[0030] Figure 3 is Figure 1 Cross-sectional view of the small panel light;

[0031] Figure 4 is Figure 2 Cross-sectional view of the pressing transmission member in the middle;

[0032] Figure 5 is Figure 2 Schematic diagram of the structure of the light source board in the middle. Specific implementation manner

[0033] The present utility model will be further described in detail below in conjunction with the embodiments of the accompanying drawings.

[0034] As Figures 1 to 5 shown, a preferred embodiment of the small panel light of the present utility model is shown. The small panel light includes a housing 1, a light source board 2, a diffuser plate 3, and a reflector cup 4. The light source board 2, the diffuser plate 3, and the reflector cup 4 are all arranged inside the housing 1 of the housing 1. An installation component 200 is connected to the housing 1, and the installation component 200 is used to install the small panel light on the ceiling.

[0035] As Figure 2 , 3 shown, the housing 1 includes a housing top 11 and a first ring wall 12 extending downward from the edge of the housing top 11. The lower end of the first ring wall 12 extends radially outward along the first ring wall 12 to form a side ring 13, and a gasket 8 is provided on the side ring 13; a wire outlet hole 111 is provided on the housing top 11, and a circle of positioning grooves 121 is provided on the inner wall of the first ring wall 12. The entire housing 1 is an integral metal part.

[0036] As Figure 2 , 3 , 5 shown, the light source board 2 is horizontally arranged inside the housing 1 and connected to the housing top 11. The lower surface of the light source board 2 is provided with a main light source 21 and a night light source 22. The main light source 21 is arranged at the center of the light source board 2, and the night light source 22 is arranged around the main light source 21; a signal line 23 for connecting to the outside is connected to the light source board 2. After being connected to the light source board 2, the signal line 23 passes through the notch 25 on the light source board 2 and then passes out through the wire outlet hole 111 on the housing top 11. A hose 7 for protecting the signal line 23 is also provided at the outlet of the wire outlet hole 111.

[0037] The reflecting cup 4 is tubular, having a large-diameter end 41 and a small-diameter end 42 along the axial direction. The small-diameter end 42 of the reflecting cup 3 abuts against the light source board 2 and separates the main light source 21 and the night light source 22. A threaded hole 421 extending vertically downward is provided at the small-diameter end 42 of the reflecting cup 4. The screw 100 passes through the top 11 of the housing 1 and the light source board 2 in sequence and is finally connected to the threaded hole 421 on the reflecting cup 4. The housing 1, the light source board 2 and the reflecting cup 4 are connected by the screw 100, and the connection structure is simple and reliable. The main light source 21 on the light source board 2 is a lighting lamp bead, and the night light source 22 is a night light lamp bead. The reflecting cup 4 separates the light of the night light and the lighting lamp, and the two do not interfere with each other.

[0038] The diffuser plate 3 is horizontally arranged below the light source board 2. Along the direction radially outward of the diffuser plate 3, a second annular wall 31 extends upward and obliquely from the edge of the diffuser plate 3. A convex portion 311 that can be snapped into the positioning groove 121 is provided on the outer peripheral wall of the second annular wall 31. The large-diameter end 41 of the reflecting cup 4 is in contact with the upper surface of the diffuser plate 3. There is a gap 1a between the large-diameter end 41 of the reflecting cup 4 and the inner wall of the first annular wall 12, and the light generated by the night light source 22 is projected onto the diffuser plate 3 through the gap 1a.

[0039] There are various connection methods between the edge of the diffuser plate 3 and the inner wall of the first annular wall 12. For example, several connecting columns are first extended upward at intervals from the edge of the diffuser plate 3, and a rectangular convex portion is provided on the outer side of the connecting columns; correspondingly, several rectangular positioning grooves with openings facing inward are provided on the inner wall of the first annular wall 12, and the rectangular convex portion is snapped into the rectangular positioning groove. The cooperation between the rectangular convex portion and the rectangular positioning groove can not only prevent the diffuser plate 3 from falling due to the action of gravity, but also prevent the diffuser plate 3 from being disengaged from the positioning groove upward due to the action of an upward pressing force. For the convenience of processing, in this embodiment, the positioning groove 121 is generated by the first annular wall 12 deforming radially outward along the first annular wall 12. Specifically, the positioning groove 121 has a first side wall 1211 extending obliquely outward from top to bottom and a second side wall 1212 extending obliquely inward from the end of the first side wall 1211 from top to bottom; the cooperation between the convex portion 311 and the second side wall 1212 can prevent the diffuser plate 3 from falling due to the action of gravity, and the cooperation between the convex portion 311 and the first side wall 1211 can prevent the diffuser plate 3 from being disengaged from the positioning groove upward due to the action of an upward pressing force.

[0040] As Figure 3As shown, a color temperature adjustment switch 5 for adjusting the color temperature of the light emitted by the light source board 2 is provided at the center of the lower surface of the light source board 2. The color temperature adjustment switch 5 is signal-connected to the light source board 2. A pressing transmission member 6 is provided between the color temperature adjustment switch 5 and the diffusion plate 3. The upper end of the pressing transmission member 6 contacts the color temperature adjustment switch 5, and the lower end surface of the pressing transmission member 6 contacts the center of the diffusion plate 3. In a state where the diffusion plate 3 is pressed upward from below, the diffusion plate 3 transmits the pressing force to the pressing transmission member 6, so that the pressing transmission member 6 presses the color temperature adjustment switch 5, and further the color temperature adjustment switch 5 adjusts the color temperature of the light emitted by the light source board 2.

[0041] As Figure 3 , 4 shown, specifically, the color temperature adjustment switch 5 is a touch switch, which includes a switch body 51 and a button 52 provided below the switch body 51. The pressing transmission member 6 can press the button 52; the pressing transmission member 6 is arranged along the vertical direction, and an upward-opening accommodating groove 60 is provided at the upper end of the pressing transmission member 6. The accommodating groove 60 includes a large groove 601 and a small groove 602 that communicate with each other. The small groove 602 is located at the center below the large groove 601. The switch body 51 is accommodated in the large groove 601, and the inner side wall of the large groove 601 fits with the switch body 51; the button 52 is accommodated in the small groove 602, and the inner side wall of the small groove 602 fits with the button 52; the fitting between the inner side wall of the accommodating groove 60 and the pressing transmission member 6 can enable the pressing transmission member 6 to stand upright in the vertical direction without other auxiliary structures.

[0042] In addition, in order to press the button, the distance between the lower end surface of the button 52 and the bottom wall of the small groove 602 is smaller than the distance between the lower end surface of the switch body 51 and the bottom wall of the large groove 601. In this embodiment, the lower end surface of the pressing transmission member 6 contacts the upper surface of the diffusion plate 3, the button 52 contacts the bottom wall of the small groove 602, and there is a certain distance between the lower end surface of the switch body 51 and the bottom wall of the large groove 601.

[0043] In order to reduce the volume of the pressing transmission member 6 and further reduce the influence of the pressing transmission member 6 on light transmission, the pressing transmission member 6 successively includes a large-diameter section 61, a medium-diameter section 62, and a small-diameter section 63 from top to bottom. The above-mentioned large groove 601 is located in the large-diameter section 61, the above-mentioned small groove 602 is located in the medium-diameter section 62, and the outer diameter of the small-diameter section 63 gradually decreases from top to bottom. In this embodiment, in order to further reduce the influence of the pressing transmission member 6 on light transmission, the pressing transmission member 6 is made of a transparent material.

[0044] In this embodiment, the light source board 2 is a DOB board. When the user presses the outer surface of the diffusion plate 3 upward from below, the pressing transmission member 6 can be pushed to move upward. The pressing transmission member 6 presses the button 52 of the touch switch, and the button 52 adjusts the color temperature cyclically. The button 52 can adjust the color temperature of the main light and / or the night light.

Claims

1. A small panel light with adjustable color temperature, comprising a housing (1), the housing (1) having a cavity with an opening downward; a light source board (2), the light source board (2) being arranged inside the housing (1); a diffuser plate (3), the diffuser plate (3) being arranged inside the housing (1) and below the light source board (2); a color temperature adjustment device, the upper end of the color temperature adjustment device being connected to the light source board (2), and the lower end of the color temperature adjustment device being in contact with the diffuser plate (3); It is characterized in that: a positioning groove (121) is provided on the inner peripheral wall of the housing (1), and the edge of the diffuser plate (3) is snap-fitted into the positioning groove (121); in a state where the diffuser plate (3) is pressed upward, the diffuser plate (3) transmits the pressing force to the color temperature adjustment device, and then the color temperature adjustment device adjusts the emission color temperature of the light source board (2).

2. The small panel lamp according to claim 1, wherein: The housing (1) includes a top shell (11) and a first annular wall (12) extending downward from the edge of the top shell (11), the light source board (2) and the diffuser plate (3) are both horizontally arranged inside the housing (1), and the positioning groove (121) is provided on the inner wall of the first annular wall (12); Along the radially outward direction of the diffuser plate (3), the edge of the diffuser plate (3) extends upward and obliquely with a second annular wall (31), and a protruding portion (311) that can be snapped into the positioning groove (121) is provided on the outer peripheral wall of the second annular wall (31).

3. The small panel lamp according to claim 2, characterized in that: It further includes a reflector cup (4) arranged between the light source board (2) and the diffuser plate (3), the reflector cup (4) having a large-diameter end (41) and a small-diameter end (42) along the axis, the small-diameter end (42) of the reflector cup (4) being connected to the lower surface of the light source board (2), and the large-diameter end (41) of the reflector cup (4) being in contact with the upper surface of the diffuser plate (3).

4. The small panel lamp according to claim 3, characterized in that: The light source board (2) is provided with a main light source (21) and a night light source (22), the main light source (21) being arranged at the center of the lower surface of the light source board (2), and the night light source (22) being arranged around the main light source (21); the small-diameter end (42) of the reflector cup (4) separates the main light source (21) and the night light source (22), and there is a gap (1a) between the large-diameter end (41) of the reflector cup (4) and the housing (1), and the light generated by the night light source (22) is irradiated onto the diffuser plate (3) through the gap (1a).

5. The small panel lamp according to claim 3, characterized in that: The light source board (2) and the reflector cup (4) are both connected to the top shell (11) by screws (100).

6. The small panel light according to claim 5, wherein: The small-diameter end (42) of the reflector cup (4) is provided with a threaded hole (421) connected to the screw (100).

7. The small panel light according to claim 6, characterized in that: The small-diameter end (42) of the reflector cup (4) is provided with an upward protruding positioning post (422), and the light source board (2) is provided with a positioning hole (24) for the positioning post (422) to penetrate into.

8. The small panel light according to any one of claims 2 to 7, characterized in that: The lower end of the first annular wall (12) extends radially outward along the first annular wall (12) with a side ring (13), and a gasket (8) is provided on the side ring (13).

9. The small panel light according to any one of claims 2 to 7, characterized in that: It further includes a signal line (23) connected to the light source board (2), and an outlet hole (111) for the signal line to pass through is provided on the top shell (11).

10. The small panel light according to any one of claims 1 to 7, characterized in that: The color temperature adjustment device includes a color temperature adjustment switch (5) and a pressing transmission member (6). The color temperature adjustment switch (5) is disposed on one side of the light source board (2) close to the diffusion plate (3). A pressing transmission member (6) is disposed between the color temperature adjustment switch (5) and the diffusion plate (3). In a state where the diffusion plate (3) is pressed from bottom to top, the diffusion plate (3) transmits the pressing force to the pressing transmission member (6), so that the pressing transmission member (6) presses the color temperature adjustment switch (5), and further the color temperature adjustment switch (5) adjusts the emission color temperature of the light source board (2).

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