Lighting control components and air purifiers

Abstract

This utility model discloses a lighting control component and an air purifier, relating to the field of household appliance technology. The lighting control component includes a base, a control switch, and a light-emitting unit. The base has a recessed groove on its side, and the recessed groove has a lower wall. The control switch is located on the groove wall of the recessed groove. The light-emitting unit is located above the lower groove wall and emits light towards it. The light from the light-emitting unit is reflected by the lower groove wall and then emitted from the opening of the recessed groove. The technical solution provided by this utility model can improve or solve the problem of glare from ambient lighting and enhance the ease of operation of the air purifier.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a lighting control component and an air purifier. Background Technology

[0002] In related technologies, household appliances such as air purifiers or humidifiers, on the one hand, enhance the user experience by incorporating ambient lighting. However, poorly designed ambient lights can result in glaring light that can cause discomfort to users. On the other hand, these appliances are operated via control switches to input commands such as adjusting set temperatures and fan speeds. However, in poorly lit environments, users may find it difficult to locate the control switches and accurately identify the different command keys, leading to inconvenient operation. Utility Model Content

[0003] The main objective of this invention is to provide a lighting control component and an air purifier, which aim to solve at least one of the aforementioned technical problems.

[0004] To achieve the above objectives, the lighting control component proposed in this utility model includes:

[0005] A base, wherein a clearance groove is provided on the side of the base, and the clearance groove has a lower groove wall;

[0006] A control switch is disposed on the groove wall of the relief groove; and

[0007] The light-emitting unit is located above the lower groove wall and emits light towards the lower groove wall. After being reflected by the lower groove wall, the light emitted by the light-emitting unit can be emitted from the opening of the relief groove.

[0008] In one embodiment, the clearance groove further has an upper groove wall with an outlet. The light-emitting unit is located above the upper groove wall, and the light from the light-emitting unit can be directed to the lower groove wall through the outlet.

[0009] In one embodiment, the emission port has a first side edge near the opening of the relief groove, and a reference straight line is defined passing through the light source center point of the light-emitting unit and the lower edge of the first side edge. The reference straight line is arranged to pass through the lower groove wall, or the reference straight line is arranged to be located outside the lower groove wall.

[0010] In one embodiment, the lower groove wall extends downwardly in a direction from the bottom of the relief groove toward the groove opening, and the reference line passes through the lower groove wall and is disposed adjacent to the lower edge of the lower groove wall.

[0011] In one embodiment, the inclination angle α of the lower tank wall relative to the horizontal plane ranges from 30° to 60°.

[0012] In one embodiment, the angle β of the reference line relative to the horizontal plane ranges from 45° to 75°.

[0013] In one embodiment, the emission port further has a second side edge opposite to the first side edge, the second side edge being away from the slot of the relief groove, and the light source center point of the light-emitting unit being located on the side of the second side edge away from the first side edge.

[0014] In one embodiment, the lighting control assembly further includes a light-diffusing plate that covers the emission port.

[0015] In one embodiment, the lighting control assembly further includes a light shield with its opening facing downwards, covering the light-emitting unit and the light-diffusing plate.

[0016] In one embodiment, the emission port has opposing first and second side edges, the first side edge being disposed near the opening of the relief groove, the light-diffusing plate covering the upper side of the emission port and having opposing third and fourth side edges, the fourth side edge being connected to the second side edge by fasteners, and the third side edge being sandwiched between the first side edge and the edge of the light shield opening.

[0017] In one embodiment, the light-emitting unit includes a circuit board and a plurality of light-emitting chips, the plurality of light-emitting chips being arranged at intervals along a first direction on the lower side surface of the circuit board, and the lengths of the emission port and the lower groove wall both extending along the first direction.

[0018] In one embodiment, the control switch is configured as a backlit touch switch and is attached to the inner side of the lower tank wall; the lower tank wall is made of a light-transmitting material.

[0019] In one embodiment, the outer surface of the lower groove wall has a frosted texture.

[0020] In one embodiment, the base is further provided with an insertion space located on the inner side of the lower groove wall. The upper end of the insertion space is provided with a disassembly port. The insertion space extends downward at an angle from the bottom of the relief groove toward the groove opening. The control switch can pass through the disassembly port at an angle downward and be inserted into the insertion space.

[0021] This utility model also proposes an air purifier, including a housing and the aforementioned light control component, wherein the base of the light control component is disposed on the housing, and the groove of the recess is exposed on the side of the housing.

[0022] The technical solution of this utility model allows the light emitted by the light-emitting unit to diffusely reflect off the lower wall of the recessed groove, creating a wall washer effect. This makes the light emitted from the opening of the recessed groove softer and less glaring. On one hand, the light-emitting unit can be used as an ambient light, improving or solving the problem of glare from ambient lights. On the other hand, since the control switch is located within the recessed groove, when the ambient light is poor (e.g., in a dark indoor space at night), the lower wall diffuses the light, indicating the location of the control switch to the user in the dark. Furthermore, because the recessed groove has a certain light intensity, it facilitates the user's identification of different command keys on the control switch. In other words, the light-emitting unit can be used as a night light, improving the ease of operation of the air purifier. Attached Figure Description

[0023] 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 the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of an embodiment of the lighting control component provided by this utility model;

[0025] Figure 2 for Figure 1 The front view of the embodiment shown;

[0026] Figure 3 for Figure 2 Sectional view at point AA;

[0027] Figure 4 for Figure 2 Sectional view at point BB;

[0028] Figure 5 for Figure 1 The illustrated embodiment is a structural schematic diagram from another perspective;

[0029] Figure 6 for Figure 1 The illustrated embodiment is shown as an exploded view from one perspective.

[0030] Figure 7 for Figure 1 An exploded view of the embodiment shown from another perspective;

[0031] Figure 8 A schematic diagram of the structure of an embodiment of the air purifier provided by this utility model;

[0032] Figure 9 for Figure 8 The front view of the illustrated embodiment.

[0033] Explanation of icon numbers:

[0034] 100. Base; 110. Relief groove; 111. Lower groove wall; 112. Upper groove wall; 113. Outlet; 114. First side edge; 115. Second side edge; 120. Insertion space; 121. Disassembly / removal port; 122. Limiting protrusion; 123. Supporting protrusion; 200. Control switch; 300. Light-emitting unit; 310. Circuit board; 320. Light-emitting chip; 400. Light-diffusing plate; 401. Third side edge; 402. Fourth side edge; 403. Mounting lug; 500. Light shield; 600. Air purifier; 610. Housing; 611. Air inlet.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] In related technologies, household appliances such as air purifiers or humidifiers, on the one hand, enhance the user experience by incorporating ambient lighting. However, poorly designed ambient lights can result in glaring light that can cause discomfort to users. On the other hand, these appliances are operated via control switches to input commands such as adjusting set temperatures and fan speeds. However, in poorly lit environments, users may find it difficult to locate the control switches and accurately identify the different command keys, leading to inconvenient operation.

[0040] In view of this, the present invention proposes a lighting control component.

[0041] Please see Figures 1 to 3 In one embodiment of this utility model, the lighting control assembly includes a base 100, a control switch 200, and a light-emitting unit 300. The base 100 has a clearance groove 110 on its side, the clearance groove 110 having a lower groove wall 111. The control switch 200 is disposed on the groove wall of the clearance groove 110, and the light-emitting unit 300 is disposed above the lower groove wall 111 and emits light towards the lower groove wall 111. The light emitted by the light-emitting unit 300 is reflected by the lower groove wall 111 and can be emitted from the opening of the clearance groove 110.

[0042] Specifically, when the light emitted by the light-emitting unit 300 hits the lower groove wall 111 of the relief groove 110, the lower groove wall 111 can form diffuse reflection and form a wall washer effect, so that the light emitted from the groove opening of the relief groove 110 is softer and less dazzling.

[0043] On the one hand, the light-emitting unit 300 can be used as an ambient light and can improve or solve the problem of glare from ambient lights.

[0044] On the other hand, since the control switch 200 is located within the recess 110, when the ambient light is poor (e.g., in a dark indoor space at night), the lower recess wall 111 can generate diffuse reflection, thus indicating the location of the control switch 200 to the user in the dark. Furthermore, because the recess 110 has a certain light intensity, it is easy for the user to identify the different command keys on the control switch 200. In other words, the light-emitting unit 300 can be used as a night light to improve the ease of operation of the air purifier 600.

[0045] In other words, the light-emitting unit 300 of this application, through the lower groove wall 111 of the recessed groove 110, forms a wall washer effect, serving as both a night light and an ambient light. Of course, the light-emitting unit 300 of this application can also have other uses. For example, the light-emitting unit 300 can be electrically connected to the main control circuit board of a household appliance and can emit light of different colors and / or intensities and / or brightness patterns according to the operating status of the household appliance or the environmental parameters it detects, to remind the user of the current operating status of the lighting control component. For example, when the lighting control component is applied to an air purifier 600, the color or intensity of the light from the light-emitting unit 300 can reflect the current air quality.

[0046] The application scenarios for the lighting control components in this application are not specifically limited. For example, they can be applied to household appliances, including but not limited to air purifiers 600, air humidifiers, fans, or robot vacuum cleaners. The following explanation will use air purifiers 600 as an example.

[0047] For example, please refer to the air purifier 600. Figure 8 and Figure 9 In some embodiments, the air purifier 600 includes a housing 610 and a light control assembly. The base 100 of the light control assembly is disposed on the housing 610, and the opening of a recess 110 is exposed on the side of the housing 610. The recess 110 is located at the top, middle, or bottom of the housing 610. For example, the recess 110 can be located at the top of the housing 610 to facilitate user operation of the control switch 200.

[0048] To enhance the wall washer effect on the lower wall 111, the outer surface of the lower wall 111 may have a frosted texture. This improves the diffuse reflection effect of the lower wall 111, resulting in more uniform light emission and further reducing glare, thus enhancing the overall wall washer effect.

[0049] The control switch 200 can have various structural forms and arrangements; for example, please refer to [link / reference]. Figure 4 and Figure 5In some embodiments, the control switch 200 can be a touch switch and is fitted to the inner side of the lower groove wall 111. In this case, the lower groove wall 111 can be reused as the switch panel of the touch switch, and the user can input different control commands by touching different areas of the lower groove wall 111. Since the relevant technology of touch switches is relatively mature, it will not be described in detail here. It should be noted that "fitted" in this embodiment does not specifically refer to the method of bonding by adhesive, but rather to the connection between the working surface of the touch switch and the inner side of the lower groove wall 111 through a large-area surface-to-surface contact.

[0050] In other embodiments, the control switch 200 may also be a switch type with mechanical buttons, and is disposed on the lower groove wall 111. In this case, the lower groove wall 111 is provided with through holes corresponding to multiple mechanical buttons, so that these mechanical buttons can be exposed and pressed by the user.

[0051] Of course, in other embodiments, the control switch 200 may also be disposed on the bottom wall of the relief groove 110.

[0052] It should be noted that the outer side of the lower groove wall 111 refers to the side that is close to the opening of the relief groove 110 and exposed to the outside; the inner side of the lower groove wall 111 refers to the side that is opposite to its outer side, close to the internal space of the air purifier 600 and not exposed to the outside.

[0053] Optionally, the control switch 200 is configured as a touch switch with backlight and / or display functions, and the lower groove wall 111 is made of a light-transmitting material. For example, the lower groove wall 111 can be a black semi-transparent structure with a frosted outer surface. In this way, the light emitted by the backlight structure of the touch switch can be projected onto the lower groove wall 111, making it easier for the user to accurately identify the different command keys on the touch switch. The display function can refer to the ability to display numerical values, such as the currently set temperature value. The backlight of the touch switch can be kept off by default, only illuminating after the touch switch is triggered, while the wall washer light formed by the light-emitting unit 300 on the lower groove wall 111 can be always present. Furthermore, the light-emitting unit 300 can only operate and illuminate in situations with insufficient ambient light, such as in a dark indoor space at night. Of course, in other embodiments, it can also be a touch switch without a backlight function.

[0054] The lower groove wall 111 can be integrally formed with the base 100. In this case, the base 100 can achieve a semi-transparent structure for the lower groove wall 111 and an opaque structure for other areas through secondary injection molding. Alternatively, the lower groove wall 111 can be separately formed from the base 100 and then assembled into one piece.

[0055] Please see Figure 4 and Figure 5 Optionally, the base 100 further includes an insertion space 120 located on the inner side of the lower groove wall 111. The upper end of the insertion space 120 has a disassembly port 121. The insertion space 120 extends downwards at an angle from the bottom of the relief groove 110 towards the opening. The control switch 200 can pass obliquely downwards through the disassembly port 121 and be inserted into the insertion space 120. Thus, the control switch 200 can be directly inserted into the insertion space 120, achieving its installation and fixation on the base 100 without the need for fasteners such as screws, or with only a few fasteners required. Simultaneously, it can achieve a close fit with the lower groove wall 111 to form a touch function. The structure is simple and easy to assemble, improving production efficiency. Of course, in other embodiments, the insertion space 120 may be omitted, and the control switch 200 may be installed on the base 100 using fasteners such as screws.

[0056] Please see Figure 5 Optionally, the inner side of the base 100 is provided with at least two limiting protrusions 122 and at least one supporting protrusion 123. The supporting protrusion 123 is located below the limiting protrusions 122 and is used to support the lower edge of the control switch 200. The at least two limiting protrusions 122 are respectively located on the left and right sides of the control switch 200 and limit and abut against the side and lower end surface of the control switch 200. The supporting protrusion 123 and the limiting protrusions 122 together define the insertion space 120, and the disassembly port 121 is formed at the interval between the two limiting protrusions 122 on the left and right sides. Of course, in other embodiments, other structural forms can also be used to construct the insertion space 120 and the disassembly port 121.

[0057] Please see Figure 3 Optionally, the recessed groove 110 further includes an upper groove wall 112 with an outlet 113. The light-emitting unit 300 is positioned above the upper groove wall 112, and the light emitted by the light-emitting unit 300 can be directed through the outlet 113 to the lower groove wall 111. Thus, by concealing the light-emitting unit 300, the risk of its light directly hitting the eyes can be further reduced. Of course, in other embodiments, the outlet 113 may be omitted, and the light-emitting unit 300 may be positioned on the lower side of the upper groove wall 112.

[0058] Please see Figure 3 Optionally, the outlet 113 has a first side edge 114 near the opening of the relief groove 110, defining a reference line (see [link to relevant documentation]). Figure 3The reference line (OM) passes through the center point of the light source of the light-emitting unit 300 and the lower edge of the first side edge 114, and the reference line is arranged to pass through the lower groove wall 111. That is, the light emitted downward from the outlet 113 of the light-emitting unit 300 will not exceed the outer boundary of the lower groove wall 111 (i.e., the boundary of the groove used to enclose the opening of the clearance groove 110), but will be entirely projected onto the outer surface of the lower groove wall 111. In this way, the light emitted downward from the light-emitting unit 300 can be prevented from falling on the ground around the air purifier 600 and forming a light band on the ground.

[0059] Of course, in other embodiments, the reference line may be positioned outside the lower groove wall 111. That is, a portion of the light emitted by the light-emitting unit 300 from the outlet 113 will extend beyond the outer boundary of the lower groove wall 111, thus forming a light band on the ground around the air purifier 600.

[0060] It should be noted that the light source center point of the light-emitting unit 300 refers to the geometric center point of the light source. For example, in an embodiment where the light-emitting unit 300 includes a circuit board 310 and a plurality of light-emitting chips 320 disposed on the circuit board 310, the light source center point refers to the geometric center point of one of the light-emitting chips 320.

[0061] Please see Figure 3 Optionally, in the direction from the bottom of the recess 110 toward the opening, the lower groove wall 111 extends downward at an angle, and the reference line passes through the lower groove wall 111 and is positioned adjacent to its lower edge. In this way, on the one hand, the lower groove wall 111, acting as a light reflector structure, is angled downward and almost completely covered by light, reflecting light towards the side of the air purifier 600 and creating a larger area of ​​wall washer light effect. On the other hand, if the control switch 200 is located on the lower groove wall 111, the downwardly angled lower groove wall 111 facilitates the user's viewing and operation of the control switch 200. Of course, in other embodiments, the lower groove wall 111 may also extend horizontally.

[0062] Please see Figure 3 Optionally, the inclination angle α of the lower tank wall 111 relative to the horizontal plane ranges from 30° to 60°, for example, 30°, 35°, 40°, 45°, 50°, 55°, or 60°. This provides a better visual effect for the wall washer lights on the lower tank wall 111 and facilitates user viewing and operation of the control switch 200. Of course, in other embodiments, the inclination angle α can also be other ranges, for example, from 10° to 29°, or from 61° to 80°.

[0063] Please see Figure 3Optionally, the tilt angle β of the reference line relative to the horizontal plane ranges from 45° to 75°, for example, 45°, 50°, 55°, 60°, 65°, 70°, or 75°. In this embodiment, the tilt angle α can be around 45° and the tilt angle β around 60°. This allows more light to be reflected by the lower groove wall 111 and directed to the side of the air purifier 600, further improving the problem of glare. Of course, in other embodiments, the tilt angle β can also be in other ranges, for example, 10° to 44°, or 76° to 85°.

[0064] Please see Figure 3 Optionally, the emission port 113 further has a second side edge 115 opposite to the first side edge 114, the second side edge 115 being away from the opening of the relief groove 110, and the light source center point of the light-emitting unit 300 being located on the side of the second side edge 115 away from the first side edge 114. This allows the lower groove wall 111 to reflect more light, thereby improving the wall washer effect.

[0065] Wherein, the extension line of the line connecting the center point of the light source of the light-emitting unit 300 and the upper edge line of the second side edge 115 (see [reference]). Figure 3 The straight line ON in the middle is close to the upper edge of the lower groove wall 111. In this way, the light emitted by the light-emitting unit 300 from the emission port 113 can basically cover the lower groove wall 111, thereby improving the wall washer light effect on the lower groove wall 111.

[0066] Please see Figure 4 and Figure 6 Optionally, the lighting control assembly further includes a light-diffusing plate 400, which covers the emission port 113. The light-diffusing plate 400 can be a semi-transparent white plate. This allows for a more uniform distribution of brightness from the wall washer lights formed on the lower tank wall 111. Of course, in other embodiments, the light-diffusing plate 400 may not be provided, or a transparent plate may be provided on the emission port 113.

[0067] Please see Figure 4 and Figure 6 Optionally, the lighting control assembly further includes a light shield 500, with its opening facing downwards and covering the light-emitting unit 300 and the light-diffusing plate 400. This protects the light-emitting unit 300 and the light-diffusing plate 400. Secondly, it prevents light from the light-emitting unit 300 from shining into the air purifier 600, thus avoiding abnormal light emission inside the air purifier 600. Of course, in other embodiments, the light shield 500 may not be included.

[0068] Please see Figure 3 and Figure 6Optionally, the emission port 113 has opposing first side edges 114 and second side edges 115. The first side edge 114 is disposed near the opening of the relief groove 110. The light-diffusing plate 400 covers the upper side of the emission port 113 and has opposing third side edges 401 and fourth side edges 402. The fourth side edge 402 is connected to the second side edge 115 by fasteners. The third side edge 401 is sandwiched between the first side edge 114 and the edge of the light shield 500. That is, one side of the light-diffusing plate 400 is fixed by fasteners, and the other side is pressed against by the light shield 500. The structure is simple and easy to assemble, which can improve production efficiency. Alternatively, the fourth side edge 402 may be provided with a mounting lug 403, which is fastened to the second side edge 115 by screws.

[0069] Please see Figure 7 The light-emitting unit 300 includes a circuit board 310 and a plurality of light-emitting chips 320. The plurality of light-emitting chips 320 are spaced apart on the lower side surface of the circuit board 310 along a first direction. The lengths of the outlet 113 and the lower groove wall 111 both extend along the first direction. In this embodiment, the first direction is the left-right direction shown in the figure. The recess 110 is located on the front end face of the air purifier 600 and above the air inlet 611. The lengths of the outlet 113 and the lower groove wall 111 both extend along the left-right direction, thereby creating a wall washer effect over a longer area. Of course, in other embodiments, the light-emitting unit 300 can also have other structural forms, such as including a light-emitting chip 320 and a light guide strip.

[0070] Please see Figure 8 and Figure 9 This utility model also proposes an air purifier 600, which includes a housing 610 and a light control component. The specific structure of the light control component is as described in the above embodiments. Since this air purifier 600 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The base 100 of the light control component is disposed on the housing 610, and the groove of the clearance groove 110 is exposed on the front end or side of the housing 610. The clearance groove 110 is disposed on the top, middle, or bottom of the housing 610.

[0071] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A lighting control component, characterized in that, include: A base, wherein a clearance groove is provided on the side of the base, and the clearance groove has a lower groove wall; A control switch is located on the groove wall of the relief groove; as well as The light-emitting unit is located above the lower groove wall and emits light towards the lower groove wall. After being reflected by the lower groove wall, the light emitted by the light-emitting unit can be emitted from the opening of the relief groove.

2. The lighting control component as described in claim 1, characterized in that, The clearance groove also has an upper groove wall with an outlet. The light-emitting unit is located above the upper groove wall, and the light from the light-emitting unit can be directed to the lower groove wall through the outlet.

3. The lighting control component as described in claim 2, characterized in that, The emission port has a first side edge near the groove opening of the relief groove. A reference straight line is defined passing through the center point of the light source of the light-emitting unit and the lower edge of the first side edge. The reference straight line is arranged to pass through the lower groove wall, or the reference straight line is arranged to be located outside the lower groove wall.

4. The lighting control component as described in claim 3, characterized in that, The lower groove wall extends downwards in the direction from the bottom of the relief groove toward the groove opening, and the reference line passes through the lower groove wall and is disposed adjacent to the lower edge of the lower groove wall.

5. The lighting control component as described in claim 4, characterized in that, The angle α of the lower tank wall relative to the horizontal plane ranges from 30° to 60°. And / or, the angle β of the reference line relative to the horizontal plane ranges from 45° to 75°; And / or, the emission port also has a second side edge opposite to the first side edge, the second side edge being away from the slot of the relief groove, and the light source center point of the light-emitting unit being located on the side of the second side edge away from the first side edge.

6. The lighting control component as described in claim 2, characterized in that, The lighting control assembly also includes a light-diffusing plate, which covers the emission port.

7. The lighting control component as described in claim 6, characterized in that, The lighting control assembly also includes a light shield with its opening facing downwards, covering the light-emitting unit and the light-diffusing plate.

8. The lighting control component as described in claim 7, characterized in that, The emission port has a first side edge and a second side edge, the first side edge being disposed near the opening of the relief groove, the light-diffusing plate covering the upper side of the emission port and having a third side edge and a fourth side edge, the fourth side edge being connected to the second side edge by fasteners, and the third side edge being sandwiched between the first side edge and the edge of the cover opening of the light shield. And / or, the light-emitting unit includes a circuit board and a plurality of light-emitting chips, the plurality of light-emitting chips being arranged at intervals along a first direction on the lower side surface of the circuit board, and the lengths of the emission port and the lower groove wall both extending along the first direction.

9. The lighting control assembly as described in any one of claims 1 to 8, characterized in that, The control switch is configured as a backlit touch switch and is attached to the inner side of the lower tank wall; the lower tank wall is made of a light-transmitting material. And / or, the outer surface of the lower groove wall has a frosted texture; And / or, the base is further provided with an insertion space, the insertion space is located on the inner side of the lower groove wall, the upper end of the insertion space is provided with a disassembly port, the insertion space extends downward at an angle from the bottom of the relief groove toward the groove opening, and the control switch can pass through the disassembly port at an angle downward and be inserted into the insertion space.

10. An air purifier, characterized in that, The device includes a housing and a lighting control assembly as described in any one of claims 1 to 9, wherein the base of the lighting control assembly is disposed on the housing, and the opening of the recessed groove is exposed on the front or side surface of the housing.

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