Transparent display switch

Abstract

The utility model relates to the technical field of touch control switches, in particular to a transparent display switch, which comprises a transparent display panel, a control circuit board, a front shell, a light-emitting part and a light-emitting part, the light-emitting part is mounted on the control circuit board, a first light channel is arranged between the control circuit board and the front shell and corresponds to the light-emitting part, and a second light channel is arranged between the control circuit board and the front shell and corresponds to the light-emitting part. The orthographic projection of the first light channel and the orthographic projection of the transparent display panel in the thickness direction of the transparent display panel at least partially coincide; the transparent display panel is provided with at least one icon, light beams emitted by the light-emitting part can irradiate the icon after passing through the first light channel, and the first light channel, the icon and the light-emitting part are arranged to meet the following relation: D < = xL1 * tanalpha / 2 < = yD. The phenomenon that light emitted by the light source is excessively concentrated on the transparent display panel to cause a local dark area is avoided, and the attractiveness of the transparent display switch is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of touch switches, in particular to a transparent display switch. Background Art

[0002] Range hoods have become an indispensable kitchen appliance in our daily lives. They are usually installed above the kitchen stove to quickly absorb the fumes generated during cooking.

[0003] The transparent display switch on the existing range hood has a light channel and a transparent display panel. When the light emitted by the light source shines on the icons on the transparent display panel through the light channel, the light emitted by the light source is too concentrated on the transparent display panel, resulting in the formation of local dark areas between adjacent icons on the transparent display panel, thereby affecting the aesthetics of the transparent display switch.

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

[0005] In order to solve the above problems, the purpose of the present invention is to provide a transparent display switch.

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

[0007] A transparent display switch, used in range hoods, comprises: a transparent display panel, a control circuit board, a front shell and a light-emitting element;

[0008] The light-emitting element is mounted on the control circuit board. A first light channel is provided between the control circuit board and the front housing and at a position corresponding to the light-emitting element. The first light channel at least partially overlaps with an orthographic projection of the transparent display panel in a thickness direction of the transparent display panel. The transparent display panel has at least one icon, and the light beam emitted by the light-emitting element can illuminate the icon after passing through the first light channel.

[0009] The settings of the first light channel, the icon and the light-emitting element satisfy the following relationship: D≤2L1×tanα / 2≤yD, wherein α is the full angle of the light beam emitted by the light-emitting element, L1 is the first spacing distance between the side of the first light channel close to the icon and the icon, D is the width of the icon in the first direction, the first direction is the intersection with the optical axis direction of the light beam emitted by the first light channel, and y is 1.5~3.

[0010] In a possible implementation manner, a shading member is further provided at a position corresponding to the light-emitting member, and the first light channel is provided on the shading member and corresponds to the light-emitting member.

[0011] In one possible embodiment, a second light channel is provided on the front shell, and the second light channel is located between the first light channel and the icon, and the first light channel, the second light channel, and the orthographic projection of the transparent display panel in the thickness direction of the transparent display panel at least partially overlap.

[0012] In a possible implementation manner, at least a portion of the second light channel extends in a direction away from the first light channel and protrudes from the front housing.

[0013] In a possible implementation, the system further includes a packaging member, wherein the packaging member is provided with an opening, and a portion of the second light channel protruding from the front shell passes through the opening and protrudes from the packaging member.

[0014] In a possible implementation manner, the first light channel, the icon, and the light-emitting element are arranged to satisfy the following relationship: D≤2L1×tanα / 2≤3D.

[0015] In a possible implementation manner, the light-emitting element, the first light channel, and the icon are arranged in alignment, and the optical axis of the light beam emitted by the light-emitting element can be coaxial with the central axis of the icon.

[0016] In a possible implementation, a plurality of the icons are spaced apart on the transparent display panel, a plurality of the first light channels are provided on the light shielding member, and the plurality of the icons correspond one-to-one to the plurality of the first light channels.

[0017] In a possible implementation manner, the second light channel is provided with a mounting opening, and the transparent display panel is embedded in the mounting opening.

[0018] In a possible embodiment, the switch includes a clamping member, and a limiting structure is provided on the transparent display panel. After the transparent display panel passes through the installation opening, the clamping member is connected to the limiting structure to fix the transparent display panel on the front shell.

[0019] In a possible implementation manner, the light-emitting element is embedded in the shading element, and the shading element can limit the emission angle of the light-emitting element.

[0020] In a possible implementation, the height of the shading member and the height of the light emitting member satisfy the following formula: h1≥z×h2, where z ranges from 1.0 to 1.3, h1 is the height of the shading member, and h2 is the height of the light emitting member.

[0021] In a possible implementation manner, a width of the second light channel in the thickness direction of the transparent display panel is greater than a width of the first light channel in the thickness direction of the transparent display panel.

[0022] In a possible implementation manner, at least a portion of the second light channel extends in a direction away from the first light channel and protrudes from the front housing.

[0023] In one possible embodiment, the setting of the second light channel and the icon satisfies the following relationship: L2≤β×L3, wherein L2 is the second spacing distance between the side of the second light channel close to the icon and the icon, L3 is the protruding height of the second light channel on the front shell, and β is 1.5~5.

[0024] The utility model has the following beneficial effects:

[0025] The transparent display switch of the present invention includes a transparent display panel, a control circuit board, a front shell and a light-emitting element. The light-emitting element is mounted on the control circuit board. A first light channel is provided between the control circuit board and the front shell and at a position corresponding to the light-emitting element. The first light channel at least partially overlaps with the orthographic projection of the transparent display panel in the thickness direction of the transparent display panel. The transparent display panel has at least one icon, and the light beam emitted by the light-emitting element can illuminate the icon after passing through the first light channel. The arrangement of the first light channel, the icon and the light-emitting element satisfies the following relationship: D≤xL1×tanα / 2≤yD. By defining the above relationship, the occurrence of a local dark area phenomenon caused by excessive concentration of light emitted by the light source on the transparent display panel is avoided, thereby improving the aesthetics of the transparent display switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] Figure 1 : A schematic structural diagram of a transparent display switch provided in an embodiment of the present disclosure.

[0028] Figure 2 :The embodiments of the present disclosure provide Figure 1 Enlarged schematic diagram of point A in the middle.

[0029] Figure 3 : A schematic structural diagram of a transparent display switch provided in an embodiment of the present disclosure.

[0030] Figure 4 : A cross-sectional view of a transparent display switch provided in an embodiment of the present disclosure.

[0031] Figure 5 : A schematic structural diagram of a transparent display switch provided in an embodiment of the present disclosure.

[0032] Figure 6 : A schematic structural diagram of a transparent display switch provided in an embodiment of the present disclosure.

[0033] Figure 7 : Main view of the transparent display panel provided in an embodiment of the present disclosure.

[0034] Figure 8 : A side view of a transparent display switch provided in an embodiment of the present disclosure.

[0035] Figure 9 : A cross-sectional view of a transparent display switch provided in an embodiment of the present disclosure.

[0036] In the figure: 1-transparent display panel, 10-first part, 11-second part, 2-control circuit board, 3-housing, 4-light-emitting part, 5-light-shielding part, 51-first light channel, 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-glue dispensing groove, 302-first chamfered structure, 303-second chamfered structure, 311-second light channel. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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.

[0040] The following is combined with Figure 1 The transparent display switch provided by the present invention includes: a transparent display panel 1, a control circuit board 2, a front housing 31, and a light-emitting element 4. The light-emitting element 4 is mounted on the control circuit board 2. A first light channel 51 is provided between the control circuit board 2 and the front housing 31 and at a position corresponding to the light-emitting element. The first light channel 51 at least partially overlaps with the orthographic projection of the transparent display panel 1 in the thickness direction of the transparent display panel 1. The transparent display panel 1 has at least one icon 103. The light beam emitted by the light-emitting element 4 can illuminate the icon 103 after passing through the first light channel 51.

[0041] The arrangement of the first light channel 51, the icon 103, and the light-emitting element 4 satisfies the following relationship: D≤2L1×tanα / 2≤yD, where α is the full angle of the light beam emitted by the light-emitting element 4, L1 is the first spacing distance between the side of the first light channel 51 close to the icon 103 and the icon 103, D is the width of the icon 103 in the first direction, the first direction is the intersection with the optical axis direction of the light beam emitted by the first light channel 51, and y is 1.5 to 3. By defining the above relationship, the occurrence of local dark areas caused by excessive concentration of light emitted by the light source on the transparent display panel 1 is avoided, thereby improving the aesthetics of the transparent display switch. Preferably, y is 2 to 3. More preferably, y is 3.

[0042] In some embodiments, a light shielding member 5 is further provided at a position corresponding to the light emitting member 4 , and the first light channel 51 is provided on the light shielding member 5 and corresponds to the light emitting member 4 .

[0043] In some embodiments, a second light channel 311 is provided on the front shell 31, and the second light channel 311 is located between the first light channel 51 and the icon 103, and the first light channel 51, the second light channel 311, and the orthographic projection of the transparent display panel 1 in the thickness direction of the transparent display panel 1 at least partially overlap.

[0044] In some embodiments, the arrangement of the first light channel 51, the icon 103, and the light-emitting element 4 satisfies the following relationship: D≤2L1×tanα / 2≤3D. This arrangement can further reduce the occurrence of local dark areas, improve the appearance of the switch, and enhance the user experience.

[0045] In some embodiments, the light-emitting element 4, the first light channel 51, and the icon 103 are centered. The optical axis of the light beam emitted by the light-emitting element 4 can be coaxial with the central axis of the icon 103. With the above arrangement, most of the light emitted by the light-emitting element 4 can irradiate on the icon 103, improving the brightness of the icon 103 and also enhancing the overall brightness of the transparent display switch.

[0046] In some embodiments, at least a part of the second light channel 311 extends in a direction away from the first light channel 51 and protrudes from the front shell 31. Since the divergence angle of the light emitted by the light-emitting element 4 is relatively large, the first light channel 51 of the light-shielding member 5 can prevent the light from diverging around, restricting the emission direction of the light source. Then, by arranging the second light channel 311 between the first light channel 51 and the icon 103, since there is still a certain distance between the first light channel 51 and the icon 103, the light will irradiate on the non-icon area of the transparent display panel 1 before reaching the icon 103. And the transparent display panel 1 is transparent and has a strong scattering and refraction effect on light. Therefore, the second light channel 311 is arranged between the first light channel 51 and the icon 103, and at least a part of the second light channel 311 protrudes from the front shell 31 in a direction away from the first light channel 51, thereby effectively concentrating the light emitted by the light-emitting element 4, increasing the luminous flux, and ensuring that stronger light can irradiate on the icon 103.

[0047] Specifically, the front shell 31 is provided with an installation opening, the installation opening is located on the second light channel 311, and at least a part of the second light channel 311 extends in a direction away from the first light channel 51 and protrudes from the plane where the installation opening of the front shell 31 is located.

[0048] In some embodiments, the settings of the second light channel 311 and the icon 103 satisfy the following relationship: L2 ≤ β × L3, where L2 is the second spacing distance between the side of the second light channel 311 close to the icon 103 and the icon 103, L3 is the protruding height of the second light channel 311 on the front shell 31, and β is 1.5 to 5. By defining the above formula, the light emitted by the light-emitting element 4 can be prevented from scattering on the non-icon area of the transparent display panel 1, improving the utilization rate of light energy.

[0049] In some embodiments, the protruding height of the second light channel 311 on the front shell 31 and the second spacing distance satisfy the following formula: L2 < y × L3. By defining the above formula, light scattering waste is further avoided, and the energy utilization rate is improved.

[0050] In some embodiments, the second light channel 311 is larger than the first light channel 51 in the length direction of the transparent display panel 1. With this arrangement, the light emitted from the second light channel 311 has a light angle, and when it is irradiated on the transparent display panel 1, it has a certain divergence angle, thereby illuminating more areas in the length direction of the transparent display panel 1.

[0051] In some embodiments, the width of the second light channel 311 in the thickness direction of the transparent display panel 1 is greater than the width of the first light channel 51 in the thickness direction of the transparent display panel 1. This configuration further enables the light emitted from the second light channel 311 to have a light angle, thereby illuminating more areas of the transparent display panel 1.

[0052] In some embodiments, a transparent display switch includes a housing 3 having a cavity defined therein, a control circuit board 2 disposed within the cavity, and a transparent display panel 1 including a first portion 10 located outside the housing 3 and a second portion 11 located within the interior of the housing 3. The area of ​​the first portion 10 accounts for a predetermined proportion of the total area of ​​the transparent display panel 1, the predetermined proportion being 60%-90%. The upper limit of the predetermined proportion may be, but is not limited to, 90%, 89%, 88%, and the lower limit may be, but is not limited to, 60%, 61%, 62%, and the like. It is understood that the predetermined proportion may also be any value within the aforementioned range, which is not enumerated herein. Preferably, the predetermined proportion is 65-85%. Further preferably, the predetermined proportion is 70%. By limiting the predetermined proportion of the area of ​​the first portion 10 to the total area of ​​the transparent display panel 1 to a predetermined proportion of 60-90%, the fixing strength of the display panel to the housing 3 can be improved, while the area of ​​the first portion 10 can meet the user's touch operation experience requirements, ensure the pressure-bearing capacity of the display panel, and extend the service life of the transparent display switch. On the other hand, a control circuit board is generally provided inside the cavity to generate heat, and the second part 11 located inside the cavity will be exposed to more heat. In order to reduce the heat felt by the user on the transparent display panel 1, the proportion of the second part 11 can be reduced and the proportion of the first part 10 can be increased.

[0053] Specifically, the housing 3 includes a front shell 31 and a rear shell 32 .

[0054] 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 preset ratio smaller than the total area of ​​the control circuit board 2, and limiting the first preset ratio to 1 / 15-1 / 7, the usable space on the control circuit board is expanded, allowing more components to be placed on the control circuit board, 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, reducing the cost of the transparent display switch. Furthermore, this configuration can reduce 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 preset ratio is 1 / 11-1 / 9. More preferably, the first preset 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 2 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.

[0055] 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.

[0056] In some embodiments, the second light channel 311 is provided with an installation opening, and the transparent display panel 1 is embedded in the installation opening. This arrangement makes it more convenient to disassemble and install the transparent display panel 1.

[0057] In some embodiments, the front housing 31 is provided with a glue dispensing groove 301 for accommodating glue. The glue dispensing groove 301 is disposed adjacent to and communicates with the second optical channel 311. By filling the glue dispensing groove 301 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 second optical channel 311 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 display switch. The glue layer solidified in the glue dispensing groove 301 can further seal the gap between the second optical channel 311 and the transparent display panel 1, thereby preventing substances such as water vapor or oil from entering the cavity, thereby extending the service life of the transparent display switch.

[0058] In some embodiments, the first portion 10 can pass through the second light channel 311 to the second portion 11, where it is fixed to the housing. 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 second light channel 311 also constitutes the second portion 11.

[0059] In some embodiments, the switch includes a clamping member 33. A limiting structure is provided on the transparent display panel 1. After the transparent display panel 1 passes through the installation opening, the clamping member 33 connects with the limiting structure to secure the transparent display panel 1 to the front housing 31. This arrangement can further secure the transparent display panel 1, making the transparent display switch more stable.

[0060] 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.

[0061] Specifically, the first clamping member, the second clamping member and the third clamping member are fixedly connected to the control circuit board 2 respectively.

[0062] In some embodiments, the rear housing 32 is recessed to form a receiving groove, and the control circuit board 2 is placed in the receiving groove.

[0063] 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.

[0064] 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 .

[0065] In some embodiments, the transparent display switch further includes a back plate 34 , which is fixedly connected to the rear housing 32 .

[0066] Specifically, the back plate 34 is made of metal.

[0067] In some embodiments, the transparent display switch further includes a seal 35, which is sleeved on the rear housing 32. The seal 35 is provided on the transparent display switch to protect the transparent display switch from oil contamination, thereby improving the safety performance of the transparent display switch and extending the service life of the transparent display switch.

[0068] In some embodiments, a packaging member 36 is further included. The packaging member 36 is provided with an opening. The portion of the second light channel 311 protruding from the front housing 31 passes through the opening and protrudes from the packaging member 36 .

[0069] In some embodiments, the transparent display panel 1 extends through an opening in the encapsulation member 36. The control circuit board 2 is located within the inner cavity of the housing 3, generating heat. This 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 impacting the user experience. Therefore, disposing the encapsulation 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 encapsulation member 36, thereby reducing the amount of heat transferred to the transparent display panel 1. Furthermore, the second light channel 311 extends through the opening in the encapsulation member 36, allowing the opening in the encapsulation member 36 to serve as another component surrounding the second light channel 311, thereby enhancing the strength of the second light channel 311.

[0070] In some embodiments, a chamfered structure is provided on one end of the side wall of the second light channel 311 facing the control circuit board 2 .

[0071] In some embodiments, at least two chamfered structures are provided on the sidewall of the second light channel 311 at one end facing the control circuit board 2 , and the at least two chamfered structures include a first chamfered structure 302 and a second chamfered structure 303 .

[0072] Specifically, the end of the side wall of the second light channel 311 facing the control circuit board 2 is chamfered to obtain the second light channel 311 having the first chamfer structure 302 and the second chamfer structure 303 .

[0073] Specifically, the chamfering process may be a frosted chamfering process or a polished chamfering process.

[0074] 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 L4 of the transverse portion 109 and the length L5 of the vertical portion satisfy the following relationship: 1 / 90 ≤ L4 / L5 ≤ 1 / 36. Because the width of the transverse portion 109 is relatively small, it 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.

[0075] 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 .

[0076] In some embodiments, at least one edge of the first portion 10 is provided with an arc portion. The arc portion can fit 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 collision.

[0077] In some embodiments, a first arc-shaped portion 101 and a second arc-shaped portion 102 are respectively provided on two edges of the first portion 10 .

[0078] 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 .

[0079] 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.

[0080] 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 .

[0081] In some embodiments, the transparent display panel 1 is provided with a touch area having an icon 103, which 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 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 display panels generally have the icon area backlit, with the entire icon area being exposed to the strong light from the lamp beads). This can significantly extend the service life of the conductive coating.

[0082] 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.

[0083] In some embodiments, the light emitting element 4 is embedded in the light shielding element 5, and the light shielding element 5 can limit 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.

[0084] Specifically, a plurality of light-transmitting holes are opened on the light-shielding member 5 to form a first light channel 51 for accommodating the light-emitting member 4 .

[0085] Specifically, the range of the gap d2 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.

[0086] In some embodiments, multiple icons 103 are spaced apart on the transparent display panel 1, and multiple first light channels 51 are provided on the light shielding member 5. The multiple icons 103 correspond one-to-one with the multiple first light channels 51. This arrangement increases the number of function buttons on the transparent display switch, and its application in range hoods improves the functionality of the range hoods, thereby enhancing the user experience.

[0087] Specifically, the transparent display switch includes a plurality of light-emitting elements 4 , and the plurality of first light channels 51 correspond to the plurality of light-emitting elements 4 in a one-to-one manner.

[0088] Specifically, the plurality of first light channels 51 correspond to the touch area of ​​the transparent display panel 1. Specifically, the first light channels 51 are arranged above / below the touch area of ​​the transparent display panel 1. With this arrangement, the light from the light emitting element 4 can be irradiated onto the touch area of ​​the transparent display panel 1.

[0089] Specifically, the transparent display switch includes seven light-emitting elements 4 .

[0090] 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.

[0091] Specifically, the light shielding member 5 includes a plurality of light shielding portions, each of which is arranged around each first light channel to form a plurality of light shielding areas.

[0092] In some embodiments, the shading member 5 includes a first shading layer and a second shading layer, the first shading layer is provided with four first light channels and four shading portions, and the second shading layer is provided with three first light channels and three shading portions.

[0093] In some embodiments, the light shielding element 5 is made of foam or plastic.

[0094] Specifically, the material of the shading element 5 is foam.

[0095] In some embodiments, the shading member 5 is fixedly connected to the control circuit board 2 .

[0096] In some embodiments, the light emitting element 4 is a ball-shaped lamp bead. Setting the light emitting element 4 as a ball-shaped 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.

[0097] 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 .

[0098] In some embodiments, the height of the light shield 5 and the height of the light emitting element 4 satisfy the following formula: h1 ≥ z × h2, where z ranges from 1.0 to 1.3, h1 is the height of the light shield 5, and h2 is the height of the light emitting element 4. This height refers to the height in the vertical direction perpendicular to the horizontal plane. A higher light shield reduces the emission angle and increases the concentration of light. The height here refers to the height in the direction perpendicular to the control circuit board 2.

[0099] Specifically, z is 1.2.

[0100] 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 touch panel 1 are all light-transmissive, making the entire transparent touch panel 1 appear transparent. When applied to a range hood, the resulting transparent display switch not only enhances the range hood's aesthetics but also improves the user experience.

[0101] In some embodiments, the touch layer 106 can sense the user's finger pressing a key 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 key mark on the transparent display panel 1 based on the received electrical signal.

[0102] 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 .

[0103] 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-transmissive material, thereby improving the aesthetics of the transparent display switch.

[0104] Specifically, the polymer coating is a PEDOT coating.

[0105] In some embodiments, the touch layer 106 is ITO glass.

[0106] 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 sensitivity of the transparent display switch is guaranteed while also ensuring the strength of the touch layer 106 and increasing its service life.

[0107] 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.

[0108] 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 .

[0109] 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 .

[0110] In some embodiments, the icon 103 is disposed on a side surface of the first transparent layer 104 .

[0111] 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.

[0112] In some embodiments, the icons of the transparent display panel 1 are disposed on a side surface of the touch layer 106 .

[0113] Specifically, the icon 103 may be provided on one side surface of the touch layer 106 by silk screen printing.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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 and its high temperature resistance, thereby extending the service life of the transparent display switch.

[0118] 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.

[0119] 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.

[0120] 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 .

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[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] 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.

[0128] 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.

[0129] Specifically, the machine used in the degassing treatment is a degassing machine.

[0130] 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.

[0131] 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.

[0132] In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other.

[0133] 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 transparent display switch, characterized in that: include: A transparent display panel (1), a control circuit board (2), a front housing (31) and a light-emitting element (4); The light-emitting element (4) is mounted on the control circuit board (2); a first light channel (51) is provided between the control circuit board (2) and the front housing (31) and at a position corresponding to the light-emitting element; the first light channel (51) and an orthographic projection of the transparent display panel (1) in a thickness direction of the transparent display panel (1) at least partially overlap; The transparent display panel (1) has at least one icon (103), and the light beam emitted by the light-emitting element (4) can illuminate the icon (103) after passing through the first light channel (51); The arrangement of the first light channel (51), the icon (103) and the light-emitting element (4) satisfies the following relationship: D≤2L1×tanα / 2≤yD, wherein α is the full angle of the light beam emitted by the light-emitting element (4), L1 is the first spacing distance between the side of the first light channel (51) close to the icon (103) and the icon (103), D is the width of the icon (103) in the first direction, the first direction is the intersection with the optical axis direction of the light beam emitted by the first light channel (51), and y is 1.5 to 3.

2. The transparent display switch according to claim 1, characterized in that: A light shielding member (5) is also provided at a position corresponding to the light emitting member (4), and the first light channel (51) is provided on the light shielding member (5) and corresponds to the light emitting member (4).

3. The transparent display switch according to claim 2, characterized in that: A second light channel (311) is provided on the front shell (31), and the second light channel (311) is located between the first light channel (51) and the icon (103), and the first light channel (51), the second light channel (311), and the orthographic projection of the transparent display panel (1) in the thickness direction of the transparent display panel (1) at least partially overlap.

4. The transparent display switch according to claim 3, characterized in that: At least a portion of the second light channel (311) extends in a direction away from the first light channel (51) and protrudes from the front housing (31).

5. The transparent display switch according to claim 4, characterized in that: It also includes a packaging member (36), the packaging member (36) is provided with an opening, and the portion of the second light channel (311) protruding from the front shell (31) passes through the opening and protrudes from the packaging member (36).

6. The transparent display switch according to claim 1, characterized in that: The arrangement of the first light channel (51), the icon (103) and the light-emitting element (4) satisfies the following relationship: D≤2L1×tanα / 2≤3D.

7. The transparent display switch according to claim 1, characterized in that: The light-emitting element (4), the first light channel (51) and the icon (103) are arranged in alignment, and the optical axis of the light beam emitted by the light-emitting element (4) can be coaxial with the central axis of the icon (103).

8. The transparent display switch according to claim 2, characterized in that: A plurality of icons (103) are arranged at intervals on the transparent display panel (1), a plurality of first light channels (51) are provided on the light shielding member (5), and the plurality of icons (103) correspond one-to-one to the plurality of first light channels (51).

9. The transparent display switch according to any one of claims 3 to 5, characterized in that: The second light channel (311) is provided with a mounting opening, and the transparent display panel (1) is embedded in the mounting opening.

10. The transparent display switch according to claim 9, characterized in that: The switch comprises a clamping member (33), and a limiting structure is provided on the transparent display panel (1). After the transparent display panel (1) passes through the installation opening, the clamping member (33) is connected to the limiting structure to fix the transparent display panel (1) on the front shell (31).

11. The transparent display switch according to claim 2, characterized in that: The light-emitting element (4) is embedded in the light-shielding element (5), and the light-shielding element (5) can limit the emission angle of the light-emitting element (4).

12. The transparent display switch according to claim 11, characterized in that: The height of the shading member (5) and the height of the luminous member (4) satisfy the following formula: h1≥z×h2, wherein the range of z is 1.0 to 1.3, h1 is the height of the shading member (5), and h2 is the height of the luminous member (4).

13. The transparent display switch according to any one of claims 3 to 5, characterized in that: The width of the second light channel (311) in the thickness direction of the transparent display panel (1) is greater than the width of the first light channel (51) in the thickness direction of the transparent display panel (1).

14. The transparent display switch according to claim 4, characterized in that: The arrangement of the second light channel (311) and the icon (103) satisfies the following relationship: L2≤β×L3, wherein L2 is a second spacing distance between a side of the second light channel (311) close to the icon (103) and the icon (103), L3 is a protruding height of the second light channel (311) on the front shell (31), and β is 1.5 to 5.

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