Range hood

Abstract

The utility model relates to the technical field of kitchen utensils, in particular to a range hood, which comprises a fan frame, an exhaust fume collecting hood, a transparent display panel and an illuminating lamp, the transparent display panel and the illuminating lamp are arranged at the bottom of the fan frame, and the transparent display panel is closer to the front side of the range hood relative to the illuminating lamp. The transparent display panel is provided with a protruding part exposed on the surface of the fan frame, a first spacing distance is formed between the illuminating lamp and the transparent display panel, and the full angle of a light beam emitted by the illuminating lamp, the height of the protruding part and the first spacing distance meet the following relation: d1 < = n * d2 * tan (90 degrees-alpha / 2), so that the illuminating lamp is prevented from irradiating an icon of the transparent display panel; the illuminating lamp is arranged on the transparent display panel, so that the light beam irradiated by the illuminating lamp only irradiates below the icon on the transparent display panel, the visibility of the icon on the transparent display panel is improved, and the lighting condition of the icon on the transparent display panel is ensured to be influenced by the illuminating lamp.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to an oil fume extractor. Background Art

[0002] An oil fume extractor is a kitchen appliance for purifying the kitchen environment. It is installed in the kitchen, above the stove, and can quickly extract the harmful oil fumes generated during cooking from the human body to reduce pollution and purify the air.

[0003] The existing oil fume extractor has a transparent touch switch and a lighting lamp. However, since the light beam emitted by the lighting lamp irradiates on the transparent display panel of the transparent touch switch, especially on the icons on the transparent display panel, the visibility of the icons on the transparent display panel will be reduced.

[0004] Therefore, it is necessary to provide an improved solution to solve the above problems. Content of the Utility Model

[0005] In order to solve the above problems, the purpose of the utility model is to provide an oil fume extractor.

[0006] The utility model is realized through the following technical solutions:

[0007] An oil fume extractor includes a fan frame, a smoke collecting hood, a transparent display panel and a lighting lamp. The transparent display panel and the lighting lamp are provided at the bottom of the fan frame. The transparent display panel is closer to the front side of the oil fume extractor than the lighting lamp. The transparent display panel has a protruding part exposed on the surface of the fan frame. There is a first spacing distance between the lighting lamp and the transparent display panel. The full angle of the light beam emitted by the lighting lamp, the height of the protruding part and the first spacing distance satisfy the following relationship: d1≤n×d2×tan(90° - α / 2), where d1 is the height of the protruding part, d2 is the first spacing distance, α is the full angle of the light beam emitted by the lighting lamp, and n is 1 - 1.4.

[0008] In a possible implementation, α, d1 and d2 satisfy the following formula: d1 < n1×d2×tan(90° - α / 2), where n1 is 1 - 1.2.

[0009] In a possible implementation, α, d1 and d2 satisfy the following formula: d1 < d2×tan(90° - α / 2).

[0010] In a possible implementation, the light beam emitted by the lighting lamp irradiates on the transparent display panel to form an irradiation area. The height of the irradiation area and the height of the protruding part satisfy the following formula: d3≤γ×d1, where d3 is the height of the irradiation area and γ is 1 / 5 - 1 / 2.

[0011] In a possible implementation manner, d3 satisfies the following formula: d3<γ1×d1, and γ1 is 1 / 4 to 1 / 3.

[0012] In a possible implementation manner, the lighting lamp is located behind the transparent display panel.

[0013] In a possible implementation manner, the area of the protruding portion of the transparent display panel accounts for a first preset proportion of the total area of the transparent display panel, and the first preset proportion is 60%-90%.

[0014] In a possible implementation, the range hood further includes a shell, the transparent display panel is connected to the shell, a mounting opening is provided on the fan frame, and the shell is at least partially embedded in the mounting opening.

[0015] In a possible implementation manner, a mounting structure is provided on the housing, the mounting structure is formed with a mounting groove, and the transparent display panel is embedded in the mounting groove.

[0016] In a possible implementation manner, at least one side of the mounting structure protrudes from the surface of the housing.

[0017] In one possible implementation, the heights of the mounting groove, the protruding portion, and the transparent display panel satisfy the following formula: h1 / h2<h2 / H, where h1 is the height of the mounting groove, h2 is the height of the protruding portion, and H is the height of the transparent display panel.

[0018] The utility model has the following beneficial effects:

[0019] The range hood of the utility model includes: a fan frame, a smoke collection hood, a transparent display panel and a lighting lamp. The transparent display panel and the lighting lamp are provided on one side of the fan frame. The transparent display panel is closer to the front side of the range hood than the lighting lamp. The transparent display panel has a protruding portion exposed on the surface of the fan frame. There is a first spacing distance between the lighting lamp and the transparent display panel. The full angle of the light beam emitted by the lighting lamp, the height of the protruding portion and the first spacing distance satisfy the following relationship: d1≤n×d2×tan(90°-α / 2), where d1 is the height of the protruding portion. d2 is the first spacing distance, α is the full angle of the light beam emitted by the lighting lamp, and n is 1 to 1.4; the present application avoids the lighting lamp from irradiating the icons on the transparent display panel by limiting the full angle of the light beam emitted by the lighting lamp, the height of the protruding part and the first spacing distance to satisfy the following relationship: d1≤n×d2×tan(90°-α / 2), so that the light beam illuminated by the lighting lamp only irradiates below the icons on the transparent display panel, thereby improving the visibility of the icons on the transparent display panel and ensuring that the lighting of the icons on the transparent display panel is affected by the lighting lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present invention or the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 : A schematic structural diagram of a range hood provided in an embodiment of the present disclosure.

[0022] Figure 2 : Schematic diagram of the partial structural position of the transparent display panel and lighting lamp provided in the embodiment of the present disclosure.

[0023] Figure 3 : A schematic structural diagram of a transparent touch switch provided by an embodiment of the present disclosure;

[0024] Figure 4 : A front view of a transparent touch switch provided by an embodiment of the present disclosure;

[0025] Figure 5 : A schematic structural diagram of a transparent touch switch provided by an embodiment of the present disclosure;

[0026] Figure 6 : A front view of a transparent display panel provided by an embodiment of the present disclosure;

[0027] Figure 7 : A side view of a transparent display panel provided by an embodiment of the present disclosure;

[0028] Figure 8 : A cross-sectional view of a transparent touch switch provided in an embodiment of the present disclosure.

[0029] In the figure: 100-fan rack, 200-smoke hood, 300-lighting lamp, 400-transparent touch switch, 1-transparent display panel, 10-protruding part, 11-hidden part, 2-control circuit board, 3-housing, 4-light-emitting part, 5-light-shielding part, 31-front shell, 32-rear shell, 33-clamping part, 34-back plate, 35-sealing part, 36-packaging part, 101-first arc-shaped portion, 102-second arc-shaped portion, 103-icon, 104-first transparent layer, 105-first optical adhesive layer, 106-touch layer, 107-second optical adhesive layer, 108-second transparent layer, 109-transverse part, 110-first limiting structure, 111-second limiting structure, 301-mounting groove, 302-glue dispensing groove, 303-first chamfer structure, 304-second chamfer structure. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products or devices.

[0032] The following embodiments are described with reference to the accompanying drawings, which do not limit the disclosure of the claims. The numerical values in this application can be measured directly or indirectly using a measuring instrument. The projected area can be simulated using a laser or other similar device to simulate the projected boundary, and then the relevant length or angle data can be measured using a measuring instrument, and then the corresponding numerical values can be calculated. Furthermore, the relevant descriptions in this application all refer to the range hood in normal use, that is, when the range hood is mounted on a wall.

[0033] The following will introduce the range hood provided by the embodiments of the present utility model in conjunction with the attached Figure 1 drawings, including:

[0034] A fan frame 100, a smoke collecting hood 200, a transparent display panel 1, and a lighting lamp 300. The bottom of the fan frame 100 is provided with the transparent display panel 1 and the lighting lamp 300. The transparent display panel 1 is closer to the front side of the range hood than the lighting lamp 300. The transparent display panel 1 has a protruding portion 10 exposed on the surface of the fan frame 100. There is a first spacing distance between the lighting lamp 300 and the transparent display panel 1. The full angle of the light beam emitted by the lighting lamp 300, the height of the protruding portion 10, and the first spacing distance satisfy the following relationship: d1 ≤ n × d2 × tan(90° - α / 2), where d1 is the height of the protruding portion 10, d2 is the first spacing distance, α is the full angle of the light beam emitted by the lighting lamp 300, and n is 1 to 1.4. Preferably, n is 1.4. In this application, by limiting that the full angle of the light beam emitted by the lighting lamp 300, the height of the protruding portion 10, and the first spacing distance satisfy the following relationship: d1 ≤ n × d2 × tan(90° - α / 2), it is avoided that the lighting lamp 300 irradiates the icon on the transparent display panel 1, so that the light beam irradiated by the lighting lamp 300 only irradiates below the icon 103 on the transparent display panel 1, improving the visibility of the icon 103 on the transparent display panel 1 and ensuring that the lighting situation of the icon 103 on the transparent display panel 1 is not affected by the lighting lamp 300. Here, the front side refers to the side closer to the user.

[0035] In some embodiments, α, d1, and d2 satisfy the following formula: d1 < n × d2 × tan(90° - α / 2). By limiting the above formula, the light beam emitted by the lighting lamp 300 is located below the transparent display panel 1, further avoiding the problem that the visibility of the icon 103 is reduced due to the light beam emitted by the lighting lamp 300 irradiating on the icon 103.

[0036] Specifically, α, d1, and d2 satisfy the following formula: d1 < n1 × d2 × tan(90° - α / 2), where n1 is 1 to 1.2. By limiting n1 in the formula to 1 to 1.2, the visibility of the icon 103 is further improved. Preferably, n1 is 1.

[0037] In some embodiments, the light beam emitted by the illuminating lamp 300 illuminates the transparent display panel 1 to form an illuminated area. The height of the illuminated area and the height of the protruding portion 10 satisfy the following formula: d3 ≤ γ × d1, where d3 is the height of the illuminated area and γ is 1 / 5 to 1 / 2. Preferably, γ is 1 / 4 to 1 / 3. Further preferably, γ is 1 / 3. Since the icon 103 is generally located in the upper middle of the panel, by defining the above formula, the height of the illuminated area is reduced, so that the illuminating lamp 300 only illuminates the area below the icon 103.

[0038] In some embodiments, d3 satisfies the following formula: d3<γ1×d1, where γ1 is 1 / 4 to 1 / 3. By further defining the above formula, the height of the irradiated area is further reduced, thereby improving the visibility of the icon 103.

[0039] In some embodiments, the lighting lamp 300 is located behind the transparent display panel 1. The lighting lamp 300 is arranged behind the transparent display panel 1 to ensure the aesthetics of the range hood.

[0040] In some embodiments, the area of the protruding portion 10 of the transparent display panel 1 accounts for a first preset proportion of the total area of the transparent display panel 1, and the first preset proportion is 60%-90%. The upper limit of the preset proportion may be, but not limited to, 90%, 89%, 88%, etc., and the lower limit of the preset proportion may be, but not limited to, 60%, 61%, 62%, etc.; it is understandable that the preset proportion can also be any point value within the above range, which is not enumerated here. Preferably, the preset proportion is 65-85%. Further preferably, the preset proportion is 70%. By limiting the area of the protruding portion 10 to a preset proportion of the total area of the transparent display panel, wherein the preset proportion is 60-90%, the fixing strength of the display panel on the housing 3 can be improved, while the area of the protruding portion 10 can also meet the user's touch operation experience requirements and ensure the pressure bearing capacity of the panel.

[0041] In some embodiments, the range hood further comprises a housing 3, the transparent display panel 1 being connected to the housing 3, and a mounting opening being formed on the fan frame 100, into which the housing 3 is at least partially embedded. This arrangement makes the installation and removal of the transparent display panel 1 more convenient.

[0042] In some embodiments, the range hood includes a transparent touch switch 400 , and the transparent touch switch 400 includes a transparent display panel 1 , a control circuit board 2 , and a housing 3 .

[0043] In some embodiments, the transparent touch switch 400 includes a control circuit board 2, a housing 3 having a cavity therein, and the control circuit board 2 disposed in the cavity. The transparent display panel 1 also includes a hidden portion 11 located within the cavity of the housing 3. The control circuit board 2 is typically disposed within the cavity, generating heat. The hidden portion 11 within the cavity is exposed to more heat. To reduce the amount of heat felt by the user on the transparent display panel 1, the proportion of the hidden portion 11 can be reduced and the proportion of the protruding portion 10 increased.

[0044] In some embodiments, the transparent display panel 1 is connected to the housing 3, the plane on which the control circuit board 2 is located intersects the plane on which the transparent display panel 1 is located, and the orthographic projection area of the transparent display panel 1 on the control circuit board 2 is less than a first predetermined ratio of the total area of the control circuit board 2, wherein the first predetermined ratio is 1 / 15-1 / 7. The upper limit of the first predetermined ratio may be, but is not limited to, 1 / 7, 2 / 7, 3 / 7, etc., and the lower limit of the first predetermined ratio may be, but is not limited to, 1 / 15, 2 / 15, 3 / 15, etc.; it is understood that the first predetermined ratio may also be any value within the above range, which is not enumerated here. By limiting the orthographic projection area of the transparent display panel 1 on the control circuit board 2 to a first predetermined ratio smaller than the total area of the control circuit board, and limiting the first predetermined ratio to 1 / 15-1 / 7, the usable space on the control circuit board 2 is expanded, allowing more components to be placed on the control circuit board 2, thereby improving the performance, functionality, and reliability of the circuit, significantly enhancing the overall performance of the range hood, and improving the user experience. It also allows for fewer lamp beads to be placed on the control circuit board 2. This configuration also reduces the contact area between the transparent display panel 1 and the control circuit board 2. Because the various components mounted on the control circuit board 2 dissipate heat during use, reducing the contact area can reduce the amount of heat transferred from the control circuit board 2 to the transparent display panel 1. Preferably, the first predetermined ratio is 1 / 11-1 / 9. More preferably, the first predetermined ratio is 1 / 9. The orthographic projection area of the transparent display panel 1 on the control circuit board 2 refers to the projected area of the transparent display panel 1 on the control circuit board 2 in a direction perpendicular to the plane on which the control circuit board 2 is located. The total area of the control circuit board refers to the projected area of the control circuit board 2 in the same projection direction as the orthographic projection direction of the transparent display panel 1 on the control circuit board 2.

[0045] In some embodiments, an acute angle α exists between the control circuit board 2 and the transparent display panel 1, satisfying 60°≤α<90°. The plane on which the control circuit board 2 is located is not necessarily perpendicular to the plane on which the transparent display panel 1 is located; the two can be tilted and intersected at a certain angle. When the control circuit board 2 is placed horizontally and the transparent display panel 1 is perpendicular to it at 90°, user operation may be inconvenient (similar to an angle that is not ergonomic). When the transparent panel is tilted at a certain angle, it is more convenient for the user to operate. At the same time, the tilt angle cannot be too small to affect the user's field of view of the buttons. The control circuit board 2 can also be tilted, but the angle with the horizontal plane is as small as possible, so that the overall space is saved.

[0046] In some embodiments, the housing 3 is provided with a mounting structure, which is formed with a mounting groove 301, and the transparent display panel 1 is embedded in the mounting groove 301. This arrangement makes it easier to remove and install the transparent display panel 1.

[0047] In some embodiments, the housing 3 is provided with a glue dispensing groove 302 for accommodating glue. The glue dispensing groove 302 is arranged adjacent to the mounting groove 301 and is in communication with the mounting groove 301. The hidden portion 11 of the transparent display panel 1 can be inserted into the glue dispensing groove 302. By filling the glue dispensing groove 302 with glue, the fixing strength between the transparent display panel 1 and the housing 3 can be increased. At the same time, due to the gap between the mounting groove 301 and the transparent display panel 1, substances such as water vapor or oil may enter the cavity of the housing 3 through the gap, causing damage to the transparent touch switch 400. The glue layer solidified in the glue dispensing groove 302 can further seal the gap between the mounting groove 301 and the transparent display panel 1, thereby preventing substances such as water vapor or oil from entering the cavity.

[0048] In some embodiments, at least one side of the mounting structure protrudes from the surface of the housing 3. This arrangement can increase the contact area between the transparent display panel 1 and the mounting structure, thereby making the installation of the transparent display panel 1 more stable.

[0049] Specifically, the side of the mounting structure facing the protruding portion 10 protrudes from the surface of the housing 3 .

[0050] In some embodiments, the protruding portion 10 can pass through the mounting slot 301 to the hidden portion 11 and be fixed to the mounting structure. This installation method, from the interior of the housing 3 to the exterior of the housing 3, can make the transparent display panel 1 more stable. The portion of the transparent display panel 1 located within the mounting slot 301 also constitutes the hidden portion 11.

[0051] In some embodiments, the transparent display panel 1 includes a limiting structure, and the shell 3 further includes a clamping member 33; after the protruding portion 10 can pass through the mounting groove 301, the limiting structure can be connected to the clamping member 33 to fix the hidden portion 11 to the mounting structure.

[0052] In some embodiments, the transparent display panel 1 includes at least two limiting structures, the at least two limiting structures include a first limiting structure 110 and a second limiting structure 111, the shell 3 includes at least three clamping parts 33, the at least three clamping parts 33 include a first clamping part, a second clamping part and a third clamping part, the first limiting structure 110 of the transparent display panel 1 is clamped with the first clamping part, the second limiting structure 111 is clamped with the second clamping part, and the middle part of one side of the transparent display panel 1 is clamped with the third clamping part.

[0053] Specifically, the first clamping member, the second clamping member and the third clamping member are respectively fixedly connected to the control circuit board 2 .

[0054] In some embodiments, the housing 3 includes a front shell 31 and a rear shell 32 . The rear shell 32 is recessed to form a receiving groove, and the control circuit board 2 is placed in the receiving groove.

[0055] In some embodiments, the shell 3 also includes a connecting piece, and a mounting hole for accommodating the connecting piece is provided in the receiving groove of the rear shell 32. A first through hole corresponding to the position of the mounting hole is provided on the front shell 31. The connecting piece passes through the first through hole and extends into the mounting hole to connect the rear shell 32 and the front shell 31.

[0056] Specifically, a second through hole corresponding to the mounting hole is provided on the control circuit board 2 , and the connector passes through the first through hole and the second through hole in sequence and then extends into the mounting hole to connect the front shell 31 , the control circuit board 2 and the rear shell 32 .

[0057] In some embodiments, the heights of the mounting groove 301, the protruding portion 10, and the transparent display panel 1 satisfy the following formula: h1 / h2<h2 / H, where h1 is the height of the mounting groove 301, h2 is the height of the protruding portion 10, and H is the height of the transparent display panel 1. This height refers to the height in the vertical direction perpendicular to the horizontal plane. The height of the mounting groove 301 should not be too long, otherwise it will reduce the height of the protruding portion 10, which will affect the usable area of the button icon 103. Furthermore, if the area of direct contact between the mounting groove 301 and the transparent display panel 1 is too large, it will conduct more heat and affect the user experience. Furthermore, the height of the protruding portion 10 should not be too small relative to the total height of the transparent display panel 1.

[0058] In some embodiments, the transparent touch switch 400 further includes a back plate 34 , which is fixedly connected to the rear housing 32 .

[0059] Specifically, the back plate 34 is made of metal.

[0060] In some embodiments, the transparent touch switch 400 further includes a seal 35, which is sleeved on the rear housing 32. The seal 35 is provided to protect the hidden portion 11 from oil contamination, thereby improving the safety performance of the range hood and extending the service life of the range hood.

[0061] In some embodiments, a packaging member 36 is sleeved on the outside of the housing 3 . The packaging member 36 is provided with an opening, and the mounting groove 301 passes through the opening and protrudes from the surface of the packaging member 36 .

[0062] In some embodiments, the transparent display panel 1 extends through the opening of the packaging member 36. The control circuit board 2 is located within the inner cavity of the housing 3, generating heat. Heat from the housing 3 and its inner cavity is transferred through objects to the transparent display panel 1, causing it to heat up and affecting the user experience. Therefore, disposing the packaging member 36 outside the housing 3 can expand the heat dissipation of the housing 3, allowing some of the heat to be transferred to the packaging member 36, thereby reducing the heat transferred to the transparent display panel 1. Furthermore, the mounting slot 301 extends through the opening of the packaging member 36, allowing the opening of the packaging member 36 to surround the mounting slot 301 as another component, thereby enhancing the strength of the mounting slot 301.

[0063] In some embodiments, at least two chamfered structures are provided on the side wall of the mounting groove 301 at one end facing the control circuit board 2 , and the at least two chamfered structures include a first chamfered structure 303 and a second chamfered structure 304 .

[0064] Specifically, the end of the side wall of the mounting groove 301 facing the control circuit board 2 is chamfered to obtain the mounting groove 301 having the first chamfer structure 303 and the second chamfer structure 304 .

[0065] Specifically, the chamfering process may be a frosted chamfering process or a polished chamfering process.

[0066] In some embodiments, the transparent display panel 1 is T-shaped and includes at least a transverse portion 109 and a vertical portion. Along the length of the transparent display panel 1, the length L1 of the transverse portion 109 and the length L2 of the vertical portion satisfy the following relationship: 1 / 90 ≤ L1 / L2 ≤ 1 / 36. Because the width of the transverse portion 109 is relatively small, its strength is relatively weak. If it is too long, it will easily break. This arrangement ensures that the transverse portion 109 does not occupy too much space when the transparent display panel 1 is installed with the housing 3 and that the transverse portion 109 is relatively strong. It also ensures that the transparent display panel 1 is not likely to fall off after installation, thereby ensuring stability.

[0067] In some embodiments, the vertical portion may be at least one of the remaining sides of the transparent display panel 1 except the horizontal portion 109 .

[0068] In some embodiments, at least one edge of the protruding portion 10 is provided with an arc portion. The arc portion can match the housing 3 for easy installation, and the smooth angle transition increases the strength of the transparent display panel 1 to prevent the panel from being easily broken by bumps.

[0069] In some embodiments, a first arc-shaped portion 101 and a second arc-shaped portion 102 are respectively provided on two edges of the protruding portion 10 .

[0070] Specifically, the edge of the transparent display panel 1 away from the light emitting element 4 is chamfered to obtain the transparent display panel 1 having the first curved portion 101 and the second curved portion 102 .

[0071] Specifically, the R corner radius of the first curved portion 101 and the first curved portion 101 satisfies: R≥2mm. This not only satisfies the aesthetics but also ensures that it is not easily bumped by the user. In addition, the R corner design increases the strength of the transparent display panel 1 to prevent the panel itself from being easily broken by bumps.

[0072] Specifically, the chamfering process may be a frosted chamfering process or a polished chamfering process, which can ensure uniformity of the light source irradiated from the light emitting element 4 to the transparent display panel 1 .

[0073] In some embodiments, the transparent touch switch 400 further includes a light-emitting element 4. A touch area for the icon 103 is provided on the protruding portion 10 of the transparent display panel 1. The touch area is covered with a conductive coating. The light-emitting element 4 is disposed on the control circuit board 2 and is located on the side of the transparent display panel 1. Light emitted by the light-emitting element 4 enters from the side of the transparent display panel 1 and illuminates the icon. This arrangement ensures that the majority of the conductive coating of the transparent display panel 1 is located outside the housing 3. By using side lighting, only the side of the panel is illuminated by the light-emitting element 4, rather than the entire touch surface being directly exposed to the strong light from the lamp beads (conventional touch panels generally have the icon area back-lit, with the entire icon area being exposed to the strong light from the lamp beads). This can greatly extend the service life of the conductive coating.

[0074] In some embodiments, the transparent display panel 1 further includes a transparent layer, an optical adhesive layer, and a touch layer 106, with the optical adhesive layer being sandwiched between the transparent layer and the touch layer 106. The transparent layer, optical adhesive layer, and touch layer in the transparent display panel 1 are all light-transmissive, making the transparent display panel 1 appear transparent as a whole, which not only enhances the aesthetics of the range hood but also improves the user experience.

[0075] In some embodiments, the touch layer 106 can sense the user's finger pressing a button and generate an electrical signal, electrically connecting the control circuit board 2 to the light-emitting element 4 and the transparent display panel 1. The control circuit board 2 is electrically connected to the light-emitting element 4 and the transparent display panel 1, so that the control circuit board 2 controls the lighting and extinguishing of the corresponding icon on the transparent display panel 1 based on the received electrical signal.

[0076] In some embodiments, the touch layer 106 includes a conductive coating and a substrate, and the conductive coating is coated on the substrate to form a touch area on the transparent display panel 1 .

[0077] In some embodiments, the conductive coating includes at least one of an ITO coating, a polymer coating, and a nanosilver coating. The conductive coating is configured to be a light-transmitting material, thereby improving the aesthetics of the transparent display panel.

[0078] Specifically, the polymer coating is a PEDOT coating.

[0079] In some embodiments, the touch layer 106 is ITO glass.

[0080] In some embodiments, the thickness of the touch layer 106 is 0.1-0.2 mm. The upper limit of the thickness of the touch layer 106 may be, but is not limited to, 0.2 mm, 0.19 mm, 0.18 mm, etc., and the lower limit of the thickness of the touch layer 106 may be, but is not limited to, 0.1 mm, 0.11 mm, 0.12 mm, etc. It is understood that the thickness of the touch layer 106 can also be any value within the above range, which is not enumerated here. By limiting the thickness, the strength of the touch layer 106 is ensured, and its service life is improved.

[0081] In some embodiments, the orthographic projection area of the optical adhesive layer on the control circuit board 2 is smaller than a second preset ratio of the total area of the control circuit board 2, and the second preset ratio is 1 / 200-1 / 100. The upper limit value of the second preset ratio may be, but not limited to, 1 / 100, 2 / 100, 3 / 100, etc., and the lower limit value of the second preset ratio may be, but not limited to, 1 / 200, 2 / 200, 3 / 200, etc.; it can be understood that the second preset ratio can be any point value within the above range, which is not enumerated here. Preferably, the second preset ratio is 1 / 200-1 / 150. Further preferably, the second preset ratio is 1 / 200. With this setting, the orthographic projection area of the transparent display panel 1 on the control circuit board 2 can be further reduced, thereby allowing more space on the control circuit board 2 to place components.

[0082] In some embodiments, the transparent display panel 1 further includes a wire, one end of which is connected to the touch layer 106 , and the other end of which is connected to the control circuit board 2 .

[0083] In some embodiments, the transparent display panel 1 includes a silver paste line, one end of which is connected to the touch layer 106 , and the other end of which extends from the bottom of the touch layer 106 to the control circuit board 2 and is connected to the control circuit board 2 .

[0084] In some embodiments, the transparent display panel 1 includes an icon 103 , and the icon 103 is disposed on a side surface of the first transparent layer 104 .

[0085] Specifically, the icon 103 can be provided on one side surface of the first transparent layer 104 by means of silk screen printing or engraving.

[0086] In some embodiments, the icon 103 of the transparent display panel 1 is disposed on a side surface of the touch layer 106 .

[0087] Specifically, the icon 103 may be provided on one side surface of the touch layer 106 by silk-screen printing.

[0088] In some embodiments, the icon 103 may be disposed on the touch layer 106 of the transparent display panel 1 by using a laser inscription process.

[0089] In some embodiments, a gap d1 is defined between the transparent display panel 1 and the control circuit board 2. The range of gap d1 is 0 < d1 ≤ 10 mm. The upper limit of the gap may be, but is not limited to, 10 mm, 9 mm, 8 mm, etc., and the lower limit may be, but is not limited to, 0 mm, 1 mm, 2 mm, etc. It is understood that the gap can also be any value within the aforementioned range, which is not enumerated here. By defining the gap between the transparent display panel 1 and the control circuit board 2, space is provided for the light-emitting element 4 and the light-shielding element 5.

[0090] In some embodiments, the control circuit board 2 is provided with a mounting position, and the light emitting element 4 is embedded in the mounting position, and the mounting position can reduce the emission angle of the light emitting element 4. With this arrangement, the distinction between adjacent key patterns on the transparent display panel 1 can be greatly improved.

[0091] Specifically, a mounting hole is provided on the control circuit board 2 to form a mounting position for mounting the light-emitting element 4 .

[0092] Specifically, the gap d2 between the transparent display panel 1 and the control circuit board 2 is in the range of 0 < d2 ≤ 2 mm. It is understood that the gap can be any value within the above range, which is not enumerated here. By limiting the gap range, the light emitted by the light-emitting element 4 can be largely concentrated on the transparent display panel 1.

[0093] In some embodiments, the mounting position wraps around the light emitting element 4, and the height of the mounting position is at least 1.2 times the height of the light emitting element 4. The higher the height of the mounting position, the smaller the emission angle and the more concentrated the light.

[0094] In some embodiments, the thickness of the control circuit board 2 is 1-2 mm. It is understandable that the thickness of the control circuit board 2 can be any value within the above range, which is not enumerated here.

[0095] In some embodiments, the control circuit board 2 is provided with multiple mounting locations, each of which corresponds to the touch area of the transparent display panel 1. Specifically, the mounting locations are provided above or below the touch area of the transparent display panel 1. The mounting locations can illuminate the touch area of the transparent display panel 1 with light from the light-emitting element 4.

[0096] Specifically, the transparent touch switch 400 includes a plurality of light-emitting elements 4 , and the plurality of light-emitting elements 4 correspond one-to-one to a plurality of installation positions.

[0097] In some embodiments, the control circuit board 2 is further provided with at least one light-blocking portion, which corresponds to the non-touch area of the transparent display panel 1. Specifically, the light-blocking portion is disposed above or below the non-touch area of the transparent display panel 1. With this arrangement, the light-blocking portion can block light emitted by the light-emitting element 4, allowing the light to illuminate the touch area of the transparent display panel 1. Providing the light-blocking portion on the control circuit board 2 prevents light from illuminating the non-touch area of the transparent display panel 1, improving the distinction between adjacent buttons on the transparent display panel 1 and thereby enhancing the user experience.

[0098] Specifically, the control circuit board 2 includes a plurality of light-shielding portions, each of which is arranged around each mounting position to form a plurality of light-shielding areas.

[0099] In some embodiments, the transparent touch switch 400 further includes a light shielding member 5 disposed on the transparent display panel 1, and the light emitting member 4 is embedded in the light shielding member 5. The light shielding member 5 can reduce the emission angle of the light emitting member 4. This arrangement can greatly improve the distinction between adjacent key patterns on the transparent display panel 1.

[0100] Specifically, a plurality of light-transmitting holes are opened on the light-shielding member 5 to form a light-transmitting portion for accommodating the light-emitting member 4 .

[0101] Specifically, the range of the gap d3 between the transparent display panel 1 and the control circuit board 2 is 2<d3≤10mm. The upper limit of the gap between the transparent display panel 1 and the control circuit board 2 can be, but not limited to, 10mm, 9mm, 8mm, etc., and the lower limit of the gap between the transparent display panel 1 and the control circuit board 2 can be, but not limited to, 2mm, 3mm, 4mm, etc. It can be understood that the gap between the transparent display panel 1 and the control circuit board 2 can also be any point value within the above range, which is not enumerated here. By limiting this gap range, on the one hand, there can be space to accommodate the shading member 5, and on the other hand, it can also make the majority of the light emitted by the light-emitting member 4 be concentrated on the transparent display panel 1.

[0102] In some embodiments, the light shielding member 5 is provided with multiple light-transmitting portions, each corresponding to the touch area of the transparent display panel 1. Specifically, the light-transmitting portions are provided above or below the touch area of the transparent display panel 1. This arrangement allows the light from the light-emitting member 4 to be directed onto the touch area of the transparent display panel 1.

[0103] Specifically, the transparent touch switch 400 includes a plurality of light-emitting elements 4 , and the plurality of light-emitting elements 4 correspond one-to-one to the plurality of light-transmitting portions.

[0104] In some embodiments, the transparent display panel 1 is provided with a non-touch area, and the light shielding member 5 includes at least one light shielding portion. The light shielding portion corresponds to the non-touch area of the transparent display panel 1. Specifically, the light shielding portion is disposed above or below the non-touch area of the transparent display panel 1. With this arrangement, the light shielding portion can block light emitted by the light-emitting element 4, preventing it from irradiating the touch area of the transparent display panel 1. Providing the light shielding portion on the light shielding member 5 prevents light from irradiating the non-touch area of the transparent display panel 1, improving the distinction between adjacent buttons on the transparent display panel 1 and thereby enhancing the user experience.

[0105] Specifically, the light shielding member 5 includes a plurality of light shielding portions, each of which is disposed around each light-transmitting portion to form a plurality of light shielding areas.

[0106] In some embodiments, the light shielding member 5 includes a first light shielding layer and a second light shielding layer. The first light shielding layer is provided with four light-transmitting portions and four light-shielding portions, and the second light shielding layer is provided with three light-transmitting portions and three light-shielding portions.

[0107] In some embodiments, the light shielding element 5 is made of foam or plastic.

[0108] Specifically, the material of the shading element 5 is foam.

[0109] In some embodiments, the shading member 5 is fixedly connected to the control circuit board 2 .

[0110] In some embodiments, the light emitting element 4 is a spherical lamp bead. Setting the light emitting element 4 as a spherical lamp bead makes the light emitting angle of the light emitting element 4 smaller and the cross-lighting degree weaker, further improving the key distinction of the transparent display panel 1.

[0111] In some embodiments, the light emitting element 4 is a common lamp bead, which has a light emitting angle of up to 120° and needs to be used in conjunction with the light shielding element 5 .

[0112] In some embodiments, the thickness ratio between the transparent layer and the optical adhesive layer is 1:(8-12). Preferably, the thickness ratio between the transparent layer and the optical adhesive layer is 1:(9-11). Further preferably, the thickness ratio between the transparent layer and the optical adhesive layer is 1:10. By limiting this thickness ratio, the entire transparent display panel 1 has a higher strength.

[0113] In some embodiments, the transparent display panel 1 includes two transparent layers, including a first transparent layer 104 and a second transparent layer 108 . Both the first transparent layer 104 and the second transparent layer 108 are glass transparent layers.

[0114] In some embodiments, the first transparent layer 104 and the second transparent layer 108 are both made of at least one of PC, acrylic, and glass. Preferably, the first transparent layer 104 and the second transparent layer 108 are both made of glass. Using glass as the material for the first transparent layer 104 and the second transparent layer 108 increases the hardness of the transparent display panel 1, makes it resistant to high temperatures, and prolongs its service life.

[0115] Specifically, the material of the first transparent layer 104 and the second transparent layer 108 includes at least one of blue glass, white glass and ultra-clear glass.

[0116] In some embodiments, the thickness of the optical adhesive layer is 0.125-0.3 mm. The upper limit of the thickness of the optical adhesive layer may be, but is not limited to, 0.3 mm, 0.29 mm, 0.28 mm, etc., and the lower limit of the thickness of the optical adhesive layer may be, but is not limited to, 0.125 mm, 0.126 mm, 0.127 mm, etc.; it is understood that the thickness of the optical adhesive layer can also be any value within the above range, which is not enumerated here. By limiting the thickness of the optical adhesive layer, the touch layer 106 and the transparent layer in the transparent display panel 1 are more tightly bonded, and the transparent display panel 1 is more stable.

[0117] In some embodiments, an anti-fingerprint coating is provided on a surface of the first transparent layer 104 away from the touch layer 106 and / or a surface of the second transparent layer 108 away from the touch layer 106 .

[0118] In some embodiments, the transparent display panel 1 includes two optical adhesive layers, the two optical adhesive layers include a first optical adhesive layer 105 and a second optical adhesive layer 107, the first optical adhesive layer 105 is sandwiched between the first transparent layer 104 and the touch layer 106, and the second optical adhesive layer 107 is sandwiched between the second transparent layer 108 and the touch layer 106.

[0119] Specifically, the first optical adhesive layer 105 and the second optical adhesive layer 107 are both formed by curing at least one of OCA optical adhesive, LOCA water adhesive, SCA optical adhesive, COF optical adhesive, foam adhesive and double-sided tape; preferably, the first optical adhesive layer 105 and the second optical adhesive layer 107 are both formed by curing OCA optical adhesive.

[0120] Specifically, the first transparent layer 104 and the touch layer 106 are bonded together by OCA optical adhesive, and the second transparent layer 108 and the touch layer 106 are bonded together by OCA optical adhesive.

[0121] In some embodiments, the preparation method of the transparent display panel 1 includes: coating OCA optical glue on both side surfaces of the touch layer 106 to obtain a touch layer having the OCA optical glue, then performing a cutting process on the touch layer to obtain a touch layer having a specific shape, then respectively bonding the first transparent layer 104 and the second transparent layer 108 to both side surfaces of the touch layer having the specific shape to obtain a pre-treated touch layer, and degassing the pre-treated touch layer to obtain the transparent display panel 1.

[0122] Specifically, the cutting process includes: using a cutter or a die-cutting machine to cut the touch layer having the OCA optical adhesive to obtain a touch layer having a specific shape.

[0123] Specifically, the machine used in the degassing treatment is a degassing machine.

[0124] In some embodiments, the preparation method of the transparent display panel 1 includes: coating OCA optical adhesive on one side surface of the touch layer 106 to obtain a first touch layer, cutting the first touch layer to obtain a touch layer with a specific shape, bonding the first transparent layer 104 and the touch layer with the specific shape with OCA optical adhesive to obtain a first pre-treated touch layer, coating OCA optical adhesive on one side surface of the second transparent layer 108 to obtain a second pre-treated touch layer, bonding the first pre-treated touch layer to one side surface of the second transparent layer coated with OCA optical adhesive, and performing a degassing treatment to obtain the transparent display panel 1.

[0125] Specifically, the cutting process includes: using a cutter or a die-cutting machine to cut the touch layer having the OCA optical adhesive to obtain a touch layer having a specific shape.

[0126] Specifically, the machine used in the degassing treatment is a degassing machine.

[0127] Example 1

[0128] This embodiment provides a range hood, which includes:

[0129] A fan frame 100, a smoke hood 200, a transparent display panel 1 and a lighting lamp 300 are provided at the bottom of the fan frame 100. The transparent display panel 1 is closer to the front side of the range hood than the lighting lamp 300. The transparent display panel 1 has a protruding portion 10 exposed on the surface of the fan frame 100. There is a first spacing distance between the lighting lamp 300 and the transparent display panel 1. The full angle of the light beam emitted by the lighting lamp 300, the height of the protruding portion 10 and the first spacing distance satisfy the following relationship: d1≤n×d2×tan(90°-α / 2), where d1 is the height of the protruding portion 10, d2 is the first spacing distance, α is the full angle of the light beam emitted by the lighting lamp 300, and n is 1.4.

[0130] The light beam emitted by the lighting lamp 300 illuminates the transparent display panel 1 to form an illuminated area. The height of the illuminated area and the height of the protruding portion 10 satisfy the following formula: d3≤γ×d1, where d3 is the height of the illuminated area and γ is 1 / 3.

[0131] The lighting lamp 300 is located behind the transparent display panel 1 .

[0132] The area of the protruding portion 10 of the transparent display panel 1 accounts for a first preset proportion of the total area of the transparent display panel 1 , and the first preset proportion is 70%.

[0133] The range hood further includes a housing 3 , the transparent display panel 1 is connected to the housing 3 , a mounting opening is provided on the fan frame 100 , and the housing 3 is at least partially embedded in the mounting opening.

[0134] The range hood includes a transparent touch switch 400 , which includes a transparent display panel 1 , a control circuit board 2 and a housing 3 .

[0135] The transparent touch switch 400 includes a control circuit board 2 . The housing 3 has a cavity therein. The control circuit board 2 is disposed in the cavity. The transparent display panel 1 further includes a hidden portion 11 located in the inner cavity of the housing 3 .

[0136] The transparent display panel 1 is connected to the housing 3, the plane where the control circuit board 2 is located intersects with the plane where the transparent display panel 1 is located, and the orthographic projection area of the transparent display panel 1 on the control circuit board 2 is smaller than a first preset proportion of the total area of the control circuit board 2, which is 1 / 9.

[0137] There is an acute angle α between the control circuit board 2 and the transparent display panel 1 , which satisfies 60°≤α<90°.

[0138] The housing 3 is provided with a mounting structure, which is formed with a mounting groove 301 , and the transparent display panel 1 is embedded in the mounting groove 301 .

[0139] The housing 3 is provided with a glue dispensing groove 302 for accommodating glue liquid. The glue dispensing groove 302 is arranged adjacent to the installation groove 301 and is connected to the installation groove 301. The hidden part 11 of the transparent display panel 1 can be inserted into the glue dispensing groove 302.

[0140] At least one side of the mounting structure protrudes from the surface of the housing 3 .

[0141] Specifically, the side of the mounting structure facing the protruding portion 10 protrudes from the surface of the housing 3 .

[0142] The protruding portion 10 can pass through the mounting groove 301 to the hidden portion 11 and be fixed in the mounting structure.

[0143] The transparent display panel 1 includes a limiting structure, and the housing 3 further includes a clamping member 33 ; after the protruding portion 10 can pass through the mounting slot 301 , the limiting structure can be connected to the clamping member 33 to fix the hidden portion 11 to the mounting structure.

[0144] The transparent display panel 1 includes at least two limiting structures, which include a first limiting structure 110 and a second limiting structure 111. The shell 3 includes at least three clamping parts 33, which include a first clamping part, a second clamping part and a third clamping part. The first limiting structure 110 of the transparent display panel 1 is clamped with the first clamping part, the second limiting structure 111 is clamped with the second clamping part, and the middle part of one side of the transparent display panel 1 is clamped with the third clamping part.

[0145] Specifically, the first clamping member, the second clamping member and the third clamping member are respectively fixedly connected to the control circuit board 2 .

[0146] The housing 3 includes a front shell 31 and a rear shell 32 . The rear shell 32 is recessed to form a receiving groove, and the control circuit board 2 is placed in the receiving groove.

[0147] The shell 3 also includes a connecting piece. A mounting hole for accommodating the connecting piece is provided in the receiving groove of the rear shell 32. A first through hole corresponding to the position of the mounting hole is provided on the front shell 31. The connecting piece passes through the first through hole and extends into the mounting hole to connect the rear shell 32 and the front shell 31.

[0148] Specifically, a second through hole corresponding to the mounting hole is provided on the control circuit board 2 , and the connector passes through the first through hole and the second through hole in sequence and then extends into the mounting hole to connect the front shell 31 , the control circuit board 2 and the rear shell 32 .

[0149] The heights of the mounting groove 301 , the protruding portion 10 and the transparent display panel 1 satisfy the following formula: h1 / h2<h2 / H, where h1 is the height of the mounting groove 301 , h2 is the height of the protruding portion 10 , and H is the height of the transparent display panel 1 .

[0150] The transparent touch switch 400 further includes a back plate 34 , which is fixedly connected to the rear housing 32 .

[0151] Specifically, the back plate 34 is made of metal.

[0152] The transparent touch switch 400 further includes a sealing member 35 , which is sleeved on the rear housing 32 .

[0153] The outer portion of the housing 3 is provided with a packaging member 36 . The packaging member 36 is provided with an opening. The mounting groove 301 passes through the opening and protrudes from the surface of the packaging member 36 .

[0154] The transparent display panel 1 passes through the opening and out of the packaging member 36 .

[0155] A chamfered structure is provided on one end of the side wall of the mounting groove 301 facing the control circuit board 2 .

[0156] At least two chamfered structures are provided on the side wall of the mounting groove 301 at one end facing the control circuit board 2 . The at least two chamfered structures include a first chamfered structure 303 and a second chamfered structure 304 .

[0157] At least two chamfered structures are provided on the side wall of the mounting groove 301 at one end facing the control circuit board 2 . The at least two chamfered structures include a first chamfered structure 303 and a second chamfered structure 304 .

[0158] Specifically, the chamfering process may be a frosted chamfering process or a polished chamfering process.

[0159] The transparent display panel 1 is T-shaped and includes at least a transverse portion 109 and a vertical portion. Along the length direction of the transparent display panel 1 , the length L1 of the transverse portion 109 and the length L2 of the vertical portion satisfy: 1 / 90≤L1 / L2≤1 / 36.

[0160] The vertical portion may be at least one of the remaining sides of the transparent display panel 1 except the horizontal portion 109 .

[0161] At least one edge of the protruding portion 10 is provided with an arc portion.

[0162] A first arc-shaped portion 101 and a second arc-shaped portion 102 are respectively formed on two edges of the protruding portion 10 .

[0163] Specifically, the edge of the transparent display panel 1 away from the light emitting element 4 is chamfered to obtain the transparent display panel 1 having the first curved portion 101 and the second curved portion 102 .

[0164] Specifically, the first arc-shaped portion 101 and the R corner radius of the first arc-shaped portion 101 meet: R ≥ 2 mm.

[0165] Specifically, the chamfering process may be a frosted chamfering process or a polished chamfering process.

[0166] The transparent touch switch 400 also includes a light-emitting element 4. A touch area for the icon 103 is provided on the protruding portion 10 of the transparent display panel 1. The touch area is covered with a conductive coating. The light-emitting element 4 is arranged on the control circuit board 2 and is located on the side of the transparent display panel 1. The light emitted by the light-emitting element 4 is incident from the side of the transparent display panel 1 and illuminates the icon.

[0167] The transparent display panel 1 further includes a transparent layer, an optical adhesive layer, and a touch layer 106 . The optical adhesive layer is sandwiched between the transparent layer and the touch layer 106 .

[0168] The touch layer 106 can sense the action of a user's finger pressing a key and generate an electrical signal to control the electrical connection between the circuit board 2, the light-emitting element 4, and the transparent display panel 1.

[0169] The touch layer 106 includes a conductive coating and a substrate. The conductive coating is coated on the substrate to form a touch area on the transparent display panel 1 .

[0170] The conductive coating includes at least one of an ITO coating, a polymer coating and a nano-silver coating.

[0171] Specifically, the polymer coating is a PEDOT coating.

[0172] The touch layer 106 is ITO glass.

[0173] The thickness of the touch layer 106 is 0.1-0.2 mm.

[0174] The orthographic projection area of the optical adhesive layer on the control circuit board 2 is smaller than a second preset ratio of the total area of the control circuit board 2 , and the second preset ratio is 1 / 200.

[0175] The transparent display panel 1 includes a silver paste line, one end of which is connected to the touch layer 106 , and the other end of which extends from the bottom of the touch layer 106 to the control circuit board 2 and is connected to the control circuit board 2 .

[0176] The transparent display panel 1 includes an icon 103, which is disposed on one side surface of the first transparent layer 104. Specifically, the icon 103 can be disposed on one side surface of the first transparent layer 104 by silk-screening or engraving.

[0177] The control circuit board 2 is provided with a mounting position, and the light-emitting component 4 is embedded in the mounting position. The mounting position can reduce the emission angle of the light-emitting component 4.

[0178] Specifically, a mounting hole is provided on the control circuit board 2 to form a mounting position for mounting the light-emitting element 4 .

[0179] Specifically, there is a gap d2 between the transparent display panel 1 and the control circuit board 2 , and the range of the gap d2 is 0<d1≤2mm.

[0180] The thickness of the control circuit board 2 is 1-2 mm.

[0181] The control circuit board 2 is provided with a plurality of mounting positions corresponding to the touch area of the transparent display panel 1 . Specifically, the mounting positions are arranged above / below the touch area of the transparent display panel 1 .

[0182] Specifically, the transparent touch switch includes a plurality of light-emitting elements 4 , and the plurality of light-emitting elements 4 correspond one-to-one to the plurality of installation positions.

[0183] The control circuit board 2 is further provided with at least one light shielding portion, which corresponds to the non-touch area of the transparent display panel 1 . Specifically, the light shielding portion is provided above / below the non-touch area of the transparent display panel 1 .

[0184] Specifically, the control circuit board 2 includes a plurality of light-shielding portions, each of which is arranged around each mounting position to form a plurality of light-shielding areas.

[0185] The light-emitting element 4 is a spherical lamp bead.

[0186] The thickness ratio between the transparent layer and the optical adhesive layer is 1:10.

[0187] The transparent display panel 1 includes two transparent layers, including a first transparent layer 104 and a second transparent layer 108 . Both the first transparent layer 104 and the second transparent layer 108 are glass transparent layers.

[0188] The first transparent layer 104 and the second transparent layer 108 are both made of at least one of PC, acrylic, and glass. Preferably, the first transparent layer 104 and the second transparent layer 108 are both made of glass.

[0189] Specifically, the material of the first transparent layer 104 and the second transparent layer 108 includes at least one of blue glass, white glass and ultra-clear glass.

[0190] The thickness of the optical adhesive layer is 0.125-0.3mm.

[0191] An anti-fingerprint coating is provided on a surface of the first transparent layer 104 away from the touch layer 106 and / or a surface of the second transparent layer 108 away from the touch layer 106 .

[0192] The transparent display panel 1 includes two optical adhesive layers, including a first optical adhesive layer 105 and a second optical adhesive layer 107 . The first optical adhesive layer 105 is sandwiched between the first transparent layer 104 and the touch layer 106 , and the second optical adhesive layer 107 is sandwiched between the second transparent layer 108 and the touch layer 106 .

[0193] Specifically, the first optical adhesive layer 105 and the second optical adhesive layer 107 are both formed by curing at least one of OCA optical adhesive, LOCA water adhesive, SCA optical adhesive, COF optical adhesive, foam adhesive and double-sided tape; preferably, the first optical adhesive layer 105 and the second optical adhesive layer 107 are both formed by curing OCA optical adhesive.

[0194] Specifically, the first transparent layer 104 and the touch layer 106 are bonded together by OCA optical adhesive, and the second transparent layer 108 and the touch layer 106 are bonded together by OCA optical adhesive.

[0195] The method for preparing the transparent display panel 1 includes: coating both side surfaces of the touch layer 106 with OCA optical adhesive to obtain a touch layer having the OCA optical adhesive, then performing a cutting process on the touch layer to obtain a touch layer having a specific shape, then respectively adhering the first transparent layer 104 and the second transparent layer 108 to both side surfaces of the touch layer having the specific shape to obtain a pre-treated touch layer, and then performing a degassing process on the pre-treated touch layer to obtain the transparent display panel 1.

[0196] Specifically, the cutting process includes: using a cutter or a die-cutting machine to cut the touch layer having the OCA optical adhesive to obtain a touch layer having a specific shape.

[0197] Specifically, the machine used in the degassing treatment is a degassing machine.

[0198] Although the present invention has been described through preferred embodiments, the present invention is not limited to the embodiments described herein, and includes various changes and modifications that may be made without departing from the scope of the present invention.

[0199] In this document, directional terms such as "front," "back," "upper," and "lower" are defined based on the positions of components in the accompanying drawings and relative to each other, and are intended solely for clarity and convenience in describing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this utility model.

[0200] In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other.

[0201] The above disclosure is only a preferred embodiment of the present invention and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A range hood, comprising a fan frame (100), a fume hood (200), a transparent display panel (1), and a lighting lamp (300), wherein the transparent display panel (1) and the lighting lamp (300) are provided at the bottom of the fan frame (100), and the transparent display panel (1) is closer to the front side of the range hood than the lighting lamp (300), and is characterized in that: The transparent display panel (1) has a protruding portion (11) exposed on the surface of the wind turbine rack (100), a first spacing distance is provided between the lighting lamp (300) and the transparent display panel (1), and the full angle of the light beam emitted by the lighting lamp (300), the height of the protruding portion (11), and the first spacing distance satisfy the following relationship: , wherein d1 is the height of the protruding portion (11), d2 is the first spacing distance, is the full angle of the light beam emitted by the lighting lamp (300), and n is 1 to 1.

4.

2. The range hood according to claim 1, characterized in that: described , d1 and d2 satisfy the following formula: , n1 is 1~1.

2.

3. The range hood according to claim 1, characterized in that: described , d1 and d2 satisfy the following formula: 。 4. The range hood according to claim 1, characterized in that: The light beam emitted by the lighting lamp (300) illuminates the transparent display panel (1) to form an illuminated area, and the height of the illuminated area and the height of the protruding portion (11) satisfy the following formula: , where d3 is the height of the irradiated area, It is 1 / 5~1 / 2.

5. The range hood according to claim 4, characterized in that: The d3 satisfies the following formula: , 1 is 1 / 4~1 / 3.

6. The range hood according to any one of claims 1 to 5, characterized in that: The area of the protruding portion (11) of the transparent display panel (1) accounts for a first preset proportion of the total area of the transparent display panel (1), and the first preset proportion is 60%-90%.

7. The range hood according to any one of claims 1 to 5, characterized in that: The range hood further comprises a housing (3), the transparent display panel (1) is connected to the housing (3), a mounting opening is provided on the fan frame (100), and the housing (3) is at least partially embedded in the mounting opening.

8. The range hood according to claim 7, characterized in that: The housing (3) is provided with a mounting structure, the mounting structure is formed with a mounting groove (301), and the transparent display panel (1) is embedded in the mounting groove (301).

9. The range hood according to claim 8, characterized in that: At least one side of the mounting structure protrudes from the surface of the housing (3).

10. The range hood according to claim 8, characterized in that: The heights of the mounting groove (301), the protruding portion (11), and the transparent display panel (1) satisfy the following formula: h1 / h2<h2 / H, wherein h1 is the height of the mounting groove (301), h2 is the height of the protruding portion (11), and H is the height of the transparent display panel (1).

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