A lighting structure of a range hood

Abstract

A kind of lighting structure of range hood, including lower box, smoke guide plate assembly arranged on lower box and lower glass panel vertically arranged below the back of smoke guide plate assembly, smoke guide plate assembly includes upper glass panel and lamp support installed on the back of upper glass panel, lighting lamp capable of bidirectional diffusion light is arranged on lamp support;By making the back side diffusion light of lighting lamp penetrate upper glass panel and fall on lower glass panel, the front side diffusion light is diffused below light source, it can also be limited by lamp support installation groove guide and form specific bidirectional diffusion angle, cooperate with the angle of upper glass panel and lower glass panel, the distance between lighting lamp and lower glass panel and other parameters;The structure can make back side light be reflected by lower glass panel and cover range hood area, front side light avoids human eye and prevents glare, while guaranteeing that oil fume is smoothly sucked and discharged, solve the problem that existing lighting structure is poor in adaptability, difficult to consider global illumination and anti-glare.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen electrical appliances, and specifically relates to a lighting structure for a range hood. Background Art

[0002] During the use of a range hood, the lighting structure is a key component that ensures the clarity of the cooking view and improves the user's operation experience. As users' requirements for the comfort of the kitchen environment increase, the lighting structure must not only meet basic lighting needs, but also cooperate and adapt with the oil fume suction and exhaust function of the range hood, so as to avoid problems such as lighting dead angles, glare, or impact on oil fume suction and exhaust efficiency.

[0003] Existing lighting structures have limitations. For example, in the patent "A Range Hood" with application number 202010609880.8 (authorized publication number CN112539429B), its lighting lamp is fixed at the bottom of the lower panel assembly. Although it can avoid dazzling light and illuminate the stove surface, this design is not associated with the core suction and exhaust structure parameters such as the position of the air inlet and the angle of the smoke guide component, cannot accurately cover the oil fume suction area, and easily leads to the formation of a lighting blind zone around the air inlet.

[0004] In addition, most existing lighting structures focus on single-angle or position adjustment, and lack multi-parameter linkage optimization. For example, only adjusting the irradiation angle to prevent glare may conflict with the rising trajectory of oil fume; or only increasing the power of the lighting lamp to expand the lighting range, due to unreasonable design of the installation distance, the light cannot evenly cover the oil fume suction area. At the same time, the prior art generally lacks the structural design of light reflection auxiliary lighting, and it is difficult to improve lighting efficiency through secondary utilization of light.

[0005] In summary, the existing lighting structure is difficult to simultaneously meet the comprehensive requirements of anti-glare and full-area lighting, has insufficient adaptability to the core suction and exhaust structure of the range hood, and needs further improvement. Contents of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a lighting structure for a range hood that can realize full-range lighting of the oil fume suction area in view of the current state of the art.

[0007] The technical solution adopted by the utility model to solve the above technical problems is as follows: the lighting structure for the range hood includes a lower box body, a smoke guide plate assembly and a lower glass panel arranged on the lower box body, the lower glass panel is vertically arranged at the rear lower part of the smoke guide plate assembly, the smoke guide plate assembly includes an upper glass panel and a lamp support mounted on the back of the upper glass panel, the lamp support is provided with a lighting lamp, the lighting lamp can diffuse light in both front and rear directions, the light diffused rearward penetrates through the upper glass panel and falls on the lower glass panel, and the light diffused forward is lower than the light source and diffuses forward and downward.

[0008] In order to precisely control the direction of the front and rear bidirectional diffused light of the lighting lamp, avoid the light from deviating due to vibration, and provide a stable mounting carrier for the lighting lamp, preferably, the lamp bracket is formed with a mounting groove for mounting the lighting lamp, the lighting lamp is installed on the bottom wall of the mounting groove, and the lighting lamp is limited and guided by the side walls of the mounting groove, so that the lighting lamp forms the front and rear bidirectional diffused light with the central axis as the reference.

[0009] In order to ensure lighting coverage while avoiding glare, and to ensure that the angle of the two-way diffused light is adapted to the lighting and anti-glare requirements of the fume extraction area, preferably, the lighting lamp is guided by the limiting side walls of the mounting groove to form a two-way diffusion angle α, and the value of the two-way diffusion angle α is in the range of 110°-130°.

[0010] To optimize the flow of cooking fumes and ensure that the diffused light from the rear of the lighting fixture can be accurately projected onto the lower glass panel for reflected lighting, thus avoiding fumes stagnation or blind spots due to improper angles, preferably, the upper glass panel and the lower glass panel form an angle β, wherein the value of the angle β is in the range of 100°-115°.

[0011] In order to achieve accurate and comprehensive coverage of the fume extraction area by the lighting, and to avoid incomplete coverage of reflected light or excessive light loss due to the distance being too close or too far, preferably, the vertical projection of the lighting lamp on the horizontal plane forms a distance γ with the lower glass panel, and the value of the distance γ is in the range of 85mm-105mm.

[0012] To further define the installation position of the lighting fixture, ensure that the front diffused light only faces the stove surface and does not shine directly into people's eyes, and avoid the lighting fixture's position shift affecting the efficiency of the rear diffused light penetrating the upper glass panel, preferably, the vertical projection of the lighting fixture falls in the middle area of ​​the upper glass panel in the front-back direction, and the installation height of the lighting fixture is lower than the front edge of the upper glass panel.

[0013] To ensure that the rear diffused light can be evenly projected onto the lower glass panel, maximize the coverage of the reflected light on the fume extraction area, and avoid insufficient local lighting due to incident point deviation, preferably, the incident point of the rear diffused light on the lower glass panel is located in the middle area of ​​the lower glass panel in the height direction.

[0014] In order to maximize the reflection efficiency of the rear diffused light on the lower glass panel, reduce light reflection loss, and ensure that the intensity of the reflected light meets the lighting requirements of the fume extraction area, preferably, the incident angle θ of the rear diffused light on the lower glass panel is in the range of 40°-60°.

[0015] To improve the energy efficiency and lifespan of the lighting structure, and to ensure that the brightness and stability of the light are suitable for the kitchen cooking scenario, the lighting lamp is preferably an LED lamp.

[0016] Compared with the prior art, the advantages of this utility model are as follows: By setting a smoke guide plate assembly and a lower glass panel vertically arranged behind and below the smoke guide plate assembly on the lower casing of the range hood, and making the smoke guide plate assembly include an upper glass panel and a lamp bracket installed on the back of the upper glass panel, and setting a lighting lamp that can diffuse light in both directions on the lamp bracket, the rear diffused light of the lighting lamp penetrates the upper glass panel and falls on the lower glass panel, and the front diffused light diffuses forward and downward below the light source; the rear diffused light can cover the smoke absorption area with the help of the reflection of the lower glass panel, solving the problem of blind spots caused by the single angle of the lighting lamp in the prior art. The front diffused light diffuses forward and downward below the light source, avoiding the human eye area and preventing glare caused by direct light shining into the eyes during cooking. At the same time, the layout of the smoke guide plate assembly and the lower glass panel does not block the flow path of the smoke, ensuring that the smoke can be smoothly absorbed and exhausted, and achieving synergistic optimization of lighting effect, anti-glare requirements and smoke absorption efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of this embodiment;

[0018] Figure 2 This is a schematic diagram of the decomposed state structure of this embodiment;

[0019] Figure 3 This is a cross-sectional structural diagram of this embodiment. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Figures 1-3 The figure shown is the preferred embodiment of this utility model.

[0022] The lighting structure of the range hood in this embodiment mainly includes a lower housing 1, a smoke guide plate assembly 2, a lower glass panel 3, a lighting lamp 4, an upper air inlet guide plate 5, and a flow guide plate 6. The smoke guide plate assembly 2 includes an upper glass panel 2a and a lamp bracket 2b, and the lighting lamp 4 is an LED lamp.

[0023] The lighting structure of the range hood disclosed in this embodiment aims to solve the problems in the prior art where the single fixed installation of the lighting structure cannot be adapted to the fume extraction area, and the simple angle adjustment lacks parameter coordination, making it difficult to take into account the lighting of the entire area and the anti-glare. Through the coordinated layout of multiple components and the precise adaptation of multiple parameters, the lighting effect and the extraction efficiency are optimized in a coordinated manner.

[0024] The structure and connection relationships of each component are as follows:

[0025] Lower housing 1 and lower air inlet 1a: Reference Figures 1 to 3As shown, the lower housing 1 serves as the mounting base for the overall structure and can be formed by metal stamping to support various components and provide a channel for the flow of fumes. Its bottom, corresponding to the area below the lower glass panel 3, forms a lower air inlet 1a, ensuring that fumes can stably enter from below, preventing the lighting structure from obstructing the fume path, and solving the problem of insufficient compatibility between the lighting structure and the exhaust function in existing technologies.

[0026] Smoke guide plate assembly 2: Reference Figure 2 and Figure 3 As shown, the smoke guide plate assembly 2 includes an upper glass panel 2a and a lamp bracket 2b mounted on the back of the upper glass panel 2a, and the lamp bracket 2b is provided with a lighting lamp 4.

[0027] Upper glass panel 2a: This is the core component for smoke guidance and light transmission. It can be made of glass with a light transmittance of not less than 85%, and the edges are ground to avoid damage from impacts. Its size is adapted to the bottom contour of the lamp bracket 2b, allowing the rear diffused light of the lighting lamp 4 to pass through, reducing light loss during transmission, and solving the problem of poor lighting effect caused by light attenuation in the prior art.

[0028] Lamp bracket 2b: A long, one-piece metal frame serves as the mounting carrier for the lighting lamp 4. A high-temperature resistant silicone rubber sealing gasket is provided between the lamp bracket 2b and the upper glass panel 2a to prevent oil fumes from seeping into the gap and contaminating the lighting lamp 4, thus affecting its service life. To achieve stable control of the bidirectional diffused light from the lighting lamp 4, a strip-shaped mounting groove 2b1 is provided along its length at the top for mounting the lighting lamp 4. A wiring hole is reserved on the bottom wall of the mounting groove 2b1 for the lighting lamp 4 wires to pass through and connect to the power supply. The two side walls of the mounting groove 2b1, namely the front and rear side walls, are symmetrically distributed. The front side wall of the mounting groove 2b1 is inclined forward and downward, and the rear side wall is inclined backward and downward. Through the limiting and guiding of the light from the lighting lamp 4 by the front and rear side walls, the lighting lamp 4 forms the bidirectional diffused light with the central axis as a reference, avoiding light deviation caused by vibration and solving the problem that single-angle adjustment cannot accurately control the light in the prior art.

[0029] Lighting Lamp 4: A long strip of LED light with a built-in aluminum heat sink to ensure efficient heat dissipation during long-term use. It is fixed to the bottom wall of mounting slot 2b1 with fasteners, and the wires pass through the wiring holes on the bottom wall of mounting slot 2b1 to connect to the power module inside the range hood.

[0030] The lighting lamp 4 is guided by the two side walls of the mounting groove 2b1 to form a bidirectional diffusion angle α. The value of the bidirectional diffusion angle α is in the range of 110°-130°, and 120° is preferred in this embodiment. The rear diffused light penetrates the upper glass panel 2a and falls on the lower glass panel 3 to meet the reflective lighting requirements. The front diffused light diffuses forward and downward below the light source to avoid the human eye area, thus solving the problem that the single fixed installation in the prior art cannot take into account both anti-glare and full-area lighting.

[0031] Meanwhile, the vertical projection of the light falls on the middle area of ​​the upper glass panel 2a in the front-to-back direction, and the installation height of the light 4 is lower than the front edge of the upper glass panel 2a, ensuring that the front diffused light only faces the stove surface, further avoiding glare; the incident point of the rear diffused light on the lower glass panel 3 is located in the middle area of ​​the height direction of the lower glass panel 3, and the incident angle θ of the rear diffused light on the lower glass panel 3 is in the range of 40°-60°. This incident angle can maximize the light reflection efficiency, ensure that the reflected light completely covers the oil fume absorption area, and avoid the occurrence of lighting blind spots.

[0032] Lower glass panel 3: Reference Figure 2 and Figure 3 As shown, the lower glass panel 3 is made of rectangular tempered glass and is vertically positioned below and behind the smoke guide plate assembly 2. It is located in front of the baffle plate 6 and mounted on the baffle plate 6, serving both as a smoke-blocking component and a reflective function. To enhance the reflective effect of the diffused light behind the lighting lamp 4, a reflective coating 3a with a reflectivity of not less than 70% can be applied to the surface facing the lighting lamp 4. This allows for the efficient reflection of light penetrating the upper glass panel 2a to the fume extraction area, solving the problems of insufficient lighting range and lack of light reflection-assisted lighting design in the prior art.

[0033] Furthermore, the upper glass panel 2a and the lower glass panel 3 form an angle β, the value of which ranges from 100° to 115°. In this embodiment, 107.5° is preferred. This angle can guide the oil fumes to flow smoothly along the surface of the upper glass panel 2a and ensure that the diffused light from the rear of the lighting lamp 4 is accurately projected onto the reflective coating 3a. Moreover, the vertical projection of the lighting lamp 4 on the horizontal plane forms a distance γ with the lower glass panel 3. The value of which ranges from 85mm to 105mm, and in this embodiment, 95mm is preferred, further ensuring that the reflected light fully covers the oil fume absorption area.

[0034] Top air inlet guide vane 5: Reference Figure 1 and Figure 2As shown, the upper air inlet guide plate 5 is made of metal plate, and its size is adapted to the bottom of the lower box 1. It is fixed to the bottom of the lower box 1 to fix the smoke guide plate assembly 2 and optimize the entry path of oil fumes. The smoke guide plate assembly 2 is installed at the bottom of the upper air inlet guide plate 5. The edge of the upper air inlet guide plate 5 is welded and fixed to the lamp bracket 2b to provide a stable installation base for the smoke guide plate assembly 2 and avoid the lamp 4 from shifting due to loosening after long-term use. At the same time, in order to better realize air intake, the upper air inlet guide plate 5 is also provided with an upper air inlet hole 5a.

[0035] Deflector 6: Reference Figure 1 and Figure 2 As shown, the baffle plate 6 is also made of metal plate, serving as the mounting carrier for the lower glass panel 3 and a fume guiding component. It is fixed to the lower housing 1 and connected to the rear end of the upper air inlet baffle plate 5. The lower glass panel 3 is fixed to the front side of the baffle plate 6 by fasteners. Silicone rubber seals can be placed between the fasteners and the baffle plate 6 to ensure the vertical stability of the lower glass panel 3 and prevent fume leakage from the assembly gap. The baffle plate 6 and the lower housing 1 work together to form an air guiding channel, connecting the air inlet areas of the lower air inlet 1a and the upper air inlet baffle plate 5, thus forming a through fume extraction channel and solving the problem that the lighting structure may affect the fume extraction efficiency in the prior art.

[0036] The working principle of the lighting structure of the range hood in this embodiment is as follows:

[0037] 1. Lighting Function Principle: When the lighting lamp 4 is powered on, the two side walls of the mounting groove 2b1 limit and guide the light, causing the lighting lamp 4 to generate bidirectional diffused light around its central axis. The rear diffused light penetrates the upper glass panel 2a with a light transmittance of not less than 85% and is projected at an incident angle θ of 40°-50° to the middle area of ​​the lower glass panel 3 in the height direction. After illuminating the reflective coating 3a with a reflectivity of not less than 70%, it is reflected and covers the oil fume absorption area between the lower air inlet 1a and the upper air inlet guide plate 5, achieving full-range, dead-angle-free lighting. The front diffused light: The light source below the lighting lamp 4 diffuses forward and downward, with the diffusion direction towards the stove surface, offset from the eye area when a person is standing and cooking, avoiding direct light shining into the eyes and causing glare, thus improving visual comfort. At the same time, the included angle β ensures that the light projection is not deviated, the distance γ ensures that the reflected light covers the entire area, and the high light transmittance of the upper glass panel 2a reduces light loss. These three factors work together to solve the problem of difficulty in achieving both full-area lighting and anti-glare in the background technology.

[0038] 2. Fume Extraction Principle: Cooking fumes flow in two paths. The first path, near the bottom of the lower glass panel 3, enters directly through the lower air inlet 1a and is guided upwards by the airflow channel of the guide plate 6. The second path, near the periphery of the smoke guide plate assembly 2, flows along the surface of the upper glass panel 2a, guided by the included angle β, and flows smoothly into the air inlet 5a of the upper air inlet guide plate 5. Both paths of fumes are ultimately drawn away by the internal fan of the range hood through the through-channel formed by the guide plate 6 and the upper air inlet guide plate 5, achieving natural and efficient extraction. Throughout the process, no component of the lighting structure obstructs the fume path, ensuring no interference between lighting and the extraction function.

[0039] In addition, the range hood equipped with this lighting structure is a smart appliance with a smart voice control module. The smart voice control module includes a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the ambient light to perform corresponding operations, thereby realizing intelligent control of the ambient light and improving the user experience of using the range hood.

[0040] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A lighting structure for a range hood, comprising a lower housing (1), a smoke guide plate assembly (2) disposed on the lower housing (1), and a lower glass panel (3), wherein the lower glass panel (3) is vertically disposed below and behind the smoke guide plate assembly (2), characterized in that: The smoke guide plate assembly (2) includes an upper glass panel (2a) and a lamp bracket (2b) installed on the back of the upper glass panel (2a). The lamp bracket (2b) is provided with a lighting lamp (4). The lighting lamp (4) can diffuse light in both directions. The diffused light from the rear side penetrates the upper glass panel (2a) and falls onto the lower glass panel (3). The diffused light from the front side diffuses forward and downward below the light source.

2. The lighting structure of the range hood according to claim 1, characterized in that: The lamp holder (2b) has a mounting groove (2b1) for mounting the lighting lamp (4). The lighting lamp (4) is mounted on the bottom wall of the mounting groove (2b1). The lighting lamp (4) is guided by the side walls of the mounting groove (2b1) so that the lighting lamp (4) forms the front and rear bidirectional diffused light with the central axis as the reference.

3. The lighting structure of the range hood according to claim 2, characterized in that: The lighting lamp (4) is guided by the limiting side walls of the mounting groove (2b1) to form a bidirectional diffusion angle α, the value of which is 110°-130°.

4. The lighting structure of the range hood according to claim 1, characterized in that: The upper glass panel (2a) and the lower glass panel (3) form an angle β, the value of which is in the range of 100°-115°.

5. The lighting structure of the range hood according to claim 1, characterized in that: The vertical projection of the lighting lamp (4) on the horizontal plane forms a distance γ with the lower glass panel (3), and the value of the distance γ is in the range of 85mm-105mm.

6. The lighting structure of the range hood according to claim 1, characterized in that: The vertical projection of the lighting lamp falls in the middle area of ​​the upper glass panel (2a) in the front-back direction, and the installation height of the lighting lamp (4) is lower than the front edge of the upper glass panel (2a).

7. The lighting structure of the range hood according to claim 1, characterized in that: The incident point of the rear diffused light on the lower glass panel (3) is located in the middle region in the height direction of the lower glass panel (3).

8. The lighting structure of the range hood according to claim 1, characterized in that: The incident angle θ of the rear diffused light on the lower glass panel (3) ranges from 40° to 60°.

9. The lighting structure of the range hood according to any one of claims 1 to 8, characterized in that: The lighting lamp (4) is an LED lamp.

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