Small panel lamp capable of adjusting color temperature

Abstract

The utility model relates to a small panel lamp capable of adjusting color temperature. The small panel lamp comprises a shell. The light source plate assembly is arranged in the shell; the diffusion plate is arranged below the opening of the shell; the upper end of the color temperature adjusting device is connected with the light source plate assembly, and the lower end is contacted with the diffusion plate; the frame is arranged on the outer peripheral wall of the shell in a sleeving mode, the lower edge of the frame extends inwards to form an inner edge ring, a limiting structure is arranged between the inner peripheral wall of the frame and the shell, and the diffusion plate and the shell are limited by the limiting structure and the inner edge ring in the vertical direction; when the diffusion plate is pressed upwards, the diffusion plate transmits pressing force to the color temperature adjusting device, and then the light emitting color temperature of the light source plate assembly is adjusted. The diffusion plate and the inner side ring form an appearance surface of the small panel lamp, so that the appearance of the small panel lamp is simple; and 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] LED panel lights are lighting products with beautiful designs and soft light, and are widely used in various places such as offices, schools, hospitals, shopping malls, and homes. According to the light-emitting principle, LED panel lights are mainly divided into two types: side-emitting and direct-down lighting, and they all 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 physical 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 color temperature of the light emitted by the light source board is provided on one side of the light source board close to the diffuser board. A pressing transmission member is provided 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 color temperature of the light emitted by the light source board. The above downlight structure also has a night light function. Specifically, a reflecting cup is provided inside the housing. The small-diameter end of the reflecting 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 reflecting cup, and a night light diffusion ring is provided in the gap between the outer ring wall of the large-diameter end of the reflecting 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 reflecting cup, and a night light diffusion ring needs to be provided in the gap between the outer ring wall of the large-diameter end of the reflecting cup and the housing. The structure of the entire 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: A small panel light with adjustable color temperature, comprising a housing having a cavity with a downward opening; a light source board assembly disposed inside the housing; a diffusion board disposed below the opening of the housing; a color temperature adjustment device, the upper end of which is connected to the light source board assembly and the lower end of which contacts the diffusion board; and further comprising a frame, the frame is sleeved on the outer peripheral wall of the housing, an inner edge ring extends inward from the lower edge of the frame, and a limiting structure is provided between the inner peripheral wall of the frame and the housing. The diffusion board and the housing are both limited in the vertical direction by the limiting structure and the inner edge ring together; 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 luminous color temperature of the light source board assembly.

[0008] To simplify the structure and facilitate installation, the housing includes a housing top and a first ring wall extending downward from the edge of the housing top, and the frame includes a second ring wall sleeved on the first ring wall; a first rib is provided on the outer peripheral wall of the first ring wall, and a second rib is provided on the inner peripheral wall of the second ring wall; the second rib is located above the first rib and abuts against the first rib; the second rib and the first rib together constitute the limiting structure. The above limiting structure enables the housing and the frame to be assembled only by strong snap-fitting; in other embodiments, the first rib may not be provided on the outer peripheral wall of the first ring wall, but the second rib directly abuts against the housing top.

[0009] Preferably, along the direction radially inward of the second ring wall, the inner edge ring extends horizontally from the lower edge of the second ring wall, or the inner edge ring extends obliquely upward from the lower edge of the second ring wall.

[0010] To enhance the supporting effect of the inner edge ring on the diffusion board, a supporting rib for supporting the diffusion board extends upward from the upper side of the inner edge ring.

[0011] Preferably, an outer edge ring extends outward from the lower edge of the frame.

[0012] To improve the lighting effect, the small panel light further includes a reflector cup disposed between the light source board assembly 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 faces the light source board assembly, and the large-diameter end of the reflector cup faces the diffusion board.

[0013] To simplify the installation of the reflector cup, a connecting ring extends radially outward from the large-diameter end of the reflector cup. The upper surface and the lower surface of the connecting ring respectively abut against the lower end surface of the first ring wall and the upper surface of the diffusion board, and the inner diameter of the connecting ring is larger than the inner diameter of the inner edge ring.

[0014] To improve the structural strength of the connecting ring, reinforcing ribs protruding upward are provided on the connecting ring.

[0015] To increase the night light function of the small panel light, a main light source and a night light source are provided on the light source board assembly. The main light source is arranged at the center of the lower surface of the light source board assembly, 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 the diameter of the large-diameter end of the reflector cup is smaller than the inner diameter of the inner edge ring. In this embodiment, the large-diameter end of the reflector cup cannot extend with a connecting ring, and the night light source irradiates the diffusion plate from the outside of the reflector cup and then emits from the diffusion plate.

[0016] Preferably, the small panel light further includes a signal line connected to the light source board assembly, and an outlet hole for the signal line to pass through is provided on the top of the shell.

[0017] Preferably, the color temperature adjustment device includes a color temperature adjustment switch and a pressing transmission member. A color temperature adjustment switch for adjusting the emission color temperature of the light source board assembly is provided on one side of the light source board assembly close to the diffusion plate. A pressing transmission member is provided between the color temperature adjustment switch and the diffusion plate. In a state where the diffusion plate is pressed upward, the diffusion plate transmits 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 assembly.

[0018] To facilitate the pressing transmission member to accurately transmit 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 and is beneficial to transmission.

[0019] To enable the pressing transmission member to accurately act 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 play a positioning role for the pressing transmission member, so that the pressing transmission member can be vertically arranged between the color temperature adjustment switch and the diffusion plate without the need to rely on other structures and will not tilt.

[0020] In other embodiments, the upper end of the pressing transmission member can also be fixedly connected to the button, such as by bonding.

[0021] 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 room for the pressing transmission member to press the button upward.

[0022] In order to reduce the volume of the pressing transmission member and thus reduce its influence on light transmission, the pressing transmission member successively 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.

[0023] In order 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.

[0024] 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.

[0025] In order to enable the diffusion plate to undergo a sufficiently large deformation when being pressed, the color temperature adjustment switch is arranged 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 subjected to an external force in the vertical direction, the center of the light source plate is more likely to deform than the edge of the light source plate.

[0026] In order to reduce the influence of the pressing transmission member on light transmission, the pressing transmission member is made of a transparent material.

[0027] Compared with the prior art, the advantages of the present utility model are as follows: The inner edge ring and the limiting structure provided on the frame fix the diffusion plate and the housing on the frame, and pressing the diffusion plate can achieve color temperature adjustment; on this basis, the diffusion plate is placed on the inner edge ring, and the diffusion plate and the inner edge ring form 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 set. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the small panel light in Embodiment 1 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 Schematic diagram of the structure of the middle frame;

[0032] Figure 5 is Figure 2 Cross-sectional view of the middle pressing transmission member;

[0033] Figure 6 Schematic diagram of the structure of another small panel light in Embodiment 1 of the present utility model. Detailed implementation manners

[0034] The present utility model will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0035] Embodiment 1

[0036] As Figures 1 to 6 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 assembly 2, a diffusion board 3, a color temperature adjustment switch 5, a pressing transmission member 6, and a frame 8.

[0037] As Figure 2 , 3 shown, the housing 1 is made of metal and includes a housing top 11 and a first ring wall 12 extending downward from the edge of the housing top 11; a wire outlet hole 111 is provided on the housing top 11, and a first rib 121 is provided on the outer peripheral wall of the first ring wall 12.

[0038] As Figures 2 to 4 shown, the frame 8 is made of plastic and includes a second ring wall 81 sleeved on the above-mentioned first ring wall 12. A second rib 811 abutted against the first rib 121 is provided on the inner peripheral wall of the second ring wall 81, and the second rib 811 is located above the first rib 121; along the radial direction of the second ring wall 81, the lower edge of the second ring wall 81 extends inward to form an inner edge ring 83, and the inner edge ring 83 extends obliquely upward from the lower edge of the second ring wall 81. The inner edge ring 83 extends upward with a plurality of support ribs 831 for supporting the diffusion board 3, and the support ribs 831 are arranged at intervals along the circumferential direction of the inner edge ring 83. The upper ends of the support ribs 831 are flush with the inner ends of the inner edge ring 83; at the same time, the lower edge of the second ring wall 81 extends horizontally outward to form an outer edge ring 82, and a connecting member 84 for connecting with the outside is further provided on the second ring wall 81.

[0039] In other embodiments, such as Figure 6 shown, along the radial direction of the second annular wall 81, the inner edge ring 83 extends horizontally inward from the lower edge of the second annular wall 81; two circumferentially spaced-apart support ribs 831 extend upward along the inner edge ring 83; the two support ribs 831 are used to support the diffusion plate 3, and at the same time, the support ribs 831 prevent the diffusion plate 3 from directly contacting the inner edge ring 83, which helps with heat dissipation.

[0040] Such as Figure 2 、 3 shown, the light source board assembly 2 is horizontally arranged in the housing 1 and connected to the top of the housing 11. The housing 1 and the light source board assembly 2 are connected by screws 100. The light source board assembly 2 includes a power board, a light source board, etc. A signal line 23 for external connection is connected to the light source board assembly 2. After being connected to the light source board assembly 2, the signal line 23 passes through the wire outlet hole 111 on the top of the housing 11. A hose 7 for protecting the signal line 23 is also provided at the outlet of the wire outlet hole 111.

[0041] The diffusion plate 3 is horizontally arranged below the opening of the housing 1 and rests on the support ribs 831 of the inner edge ring 83. The diameter of the diffusion plate 3 is larger than the outer diameter of the first annular wall 12. In some embodiments, after the housing 1 is connected to the light source board assembly 2, the diffusion plate 3 is placed on the inner edge ring 83, and the housing 1 is placed into the frame 8 from top to bottom and the housing 1 is pressed downward so that the housing 1 is snapped into the frame 8, and the assembly can be completed; in the assembled state, the inner edge ring 83 and the second rib 811 on the frame 8 jointly limit the movement of the housing 1 and the diffusion plate 3 in the vertical direction.

[0042] Such as Figure 3 shown, a color temperature adjustment switch 5 for adjusting the emission color temperature of the light source board assembly 2 is connected to the center of the lower surface of the light source board assembly 2. A pressing transmission member 6 is arranged 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 the 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 assembly 2.

[0043] Such as Figure 3 、 5As 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 is in contact 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 is in contact with the button 52; the fit 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.

[0044] In addition, in order to press the button 52, the distance between the lower end surface of the button 52 and the bottom wall of the small groove 602 is less 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 is in contact with the upper surface of the diffusion plate 3, the button 52 is in contact with 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. As long as the diffusion plate 3 is slightly deformed, the button 52 can be pressed.

[0045] In order to reduce the volume of the pressing transmission member 6 and thereby reduce the influence of the pressing transmission member 6 on light transmission, the pressing transmission member 6 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.

[0046] In addition, the small panel light further includes a tubular reflecting cup 4, which has 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 assembly 2; a connecting ring 43 extends horizontally outward along the radial direction of the large-diameter end 41 of the reflecting cup 4. The upper surface and the lower surface of the connecting ring 43 respectively abut against the lower end surface of the first ring wall 12 and the upper surface of the diffusion plate 3; and the inner diameter of the connecting ring 43 is greater than the inner diameter of the inner edge ring 83. The connecting ring 43 is provided with upwardly protruding reinforcing ribs 431. The fact that the inner diameter of the connecting ring 43 is greater than the inner diameter of the inner edge ring 83 makes the connecting ring 43 not block the light output of the diffusion plate 3.

[0047] The assembly process of the small panel light in this embodiment is as follows:

[0048] Connect the color temperature adjustment switch 5 to the light source board assembly 2, then connect the light source board assembly 2 to the housing 1, and sleuth the pressing transmission member 6 on the color temperature adjustment switch 5; sequentially place the diffuser plate 3, the reflector cup 4 and the housing 1 into the frame 8; press the housing 1 from top to bottom so that the first rib 121 crosses the second rib 811.

[0049] Embodiment 2

[0050] The difference between Embodiment 2 and Embodiment 1 lies in that: the light source board assembly 2 is provided with a main light source and a night light source. The main light source is arranged at the center of the lower surface of the light source board assembly 2, and the night light source is arranged around the main light source; the small-diameter end 42 of the reflector cup 4 separates the main light source and the night light source, and the diameter of the large-diameter end 41 of the reflector cup 4 is smaller than the inner diameter of the inner edge ring 83. In this embodiment, the large-diameter end 41 of the reflector cup cannot extend with a connecting ring 43, and the night light source shoots from the outside of the reflector cup 4 to the diffuser plate 3 and then emits from the diffuser plate 3.

Claims

1. A small panel light with adjustable color temperature, comprising a housing (1) having a cavity opening downward; a light source board assembly (2) disposed inside the housing (1); a diffusion plate (3) disposed below the opening of the housing (1); a color temperature adjustment device, the upper end of which is connected to the light source board assembly (2), and the lower end of which contacts the diffusion plate (3); characterized in that it further comprises a frame (8), the frame (8) is sleeved on the outer peripheral wall of the housing (1), an inner edge ring (83) extends inward from the lower edge of the frame (8), a limiting structure is provided between the inner peripheral wall of the frame (8) and the housing (1), and both the diffusion plate (3) and the housing (1) are jointly limited by the limiting structure and the inner edge ring (83) in the vertical direction; In a state where the diffusion plate (3) is pressed upward, the diffusion 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 assembly (2).

2. The small panel light according to claim 1, characterized in that: The housing (1) includes a housing top (11) and a first ring wall (12) extending downward from the edge of the housing top (11), and the frame (8) includes a second ring wall (81) sleeved on the first ring wall (12); A first rib (121) is provided on the outer peripheral wall of the first ring wall (12), and a second rib (811) is provided on the inner peripheral wall of the second ring wall (81); the second rib (811) is located above the first rib (121) and abuts against the first rib (121); the second rib (811) and the first rib (121) jointly form the limiting structure.

3. The small panel lamp according to claim 2, wherein: Along the direction radially inward of the second ring wall (81), the inner edge ring (83) extends horizontally from the lower edge of the second ring wall (81), or the inner edge ring (83) extends obliquely upward from the lower edge of the second ring wall (81).

4. The small panel lamp according to claim 3, wherein: A support rib (831) for supporting the diffusion plate (3) extends upward on the upper side of the inner edge ring (83).

5. The small panel lamp according to claim 2, characterized in that: It further comprises a reflector cup (4) disposed between the light source board assembly (2) and the diffusion plate (3), the reflector cup (4) has a large-diameter end (41) and a small-diameter end (42) along the axis, the small-diameter end (42) of the reflector cup (4) faces the light source board assembly (2), and the large-diameter end (41) of the reflector cup (4) faces the diffusion plate (3).

6. The small panel light according to claim 5, characterized in that: A connecting ring (43) extends radially outward along the large-diameter end (41) of the reflector cup (4), the upper surface and the lower surface of the connecting ring (43) respectively abut against the lower end surface of the first ring wall (12) and the upper surface of the diffusion plate, and the inner diameter of the connecting ring (43) is larger than the inner diameter of the inner edge ring (83).

7. The small panel lamp according to claim 6, wherein: Reinforcing ribs (431) protruding upward are provided on the connecting ring (43).

8. The small panel light according to claim 5, characterized in that: A main light source (21) and a night light source (22) are provided on the light source board assembly (2), the main light source (21) is disposed at the center of the lower surface of the light source board assembly (2), and the night light source (22) is arranged around the main light source (21); The small-diameter end (42) of the reflector cup (4) separates the main light source (21) from the night light source (22), and the diameter of the large-diameter end (41) of the reflector cup (4) is smaller than the inner diameter of the inner edge ring (83).

9. The small panel lamp according to any one of claims 2 to 8, characterized in that: It further includes a signal line (23) connected to the light source board assembly (2), and an outlet hole (111) for the signal line to pass through is provided on the top of the shell (11).

10. The small panel lamp according to any one of claims 1 to 8, characterized in that: The color temperature adjustment device includes a color temperature adjustment switch (5) and a pressing transmission member (6). A color temperature adjustment switch (5) for adjusting the emission color temperature of the light source board assembly (2) is provided on one side of the light source board assembly (2) close to the diffusion plate (3). A pressing transmission member (6) is provided between the color temperature adjustment switch (5) and the diffusion plate (3). In a state where the diffusion plate (3) is pressed upward, 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 assembly (2).

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