Luminous keyboard

Abstract

The invention provides a light-emitting keyboard, which comprises a metal bottom plate, a light-emitting module and an insulating hot-pressing sheet, the metal bottom plate is provided with an upper surface and a lower surface which are opposite. The light-emitting module comprises a circuit structure and a plurality of light-emitting elements, wherein the circuit structure is provided with an upper surface and a lower surface which are opposite to each other and comprises a base material and a circuit formed on the base material. The plurality of light-emitting elements are electrically connected to the circuit. The insulating hot-pressing sheet is arranged between the circuit structure and the metal bottom plate, and the circuit structure is attached to the upper surface or the lower surface of the metal bottom plate through the insulating hot-pressing sheet.

Description

Technical Field

[0001] The invention relates to a luminous keyboard, in particular to a thin luminous keyboard with good heat dissipation. Background Art

[0002] With the development of the information industry, the popularity of electronic products such as computers has increased rapidly, among which the keyboard is one of the most important and convenient input devices. The development of keyboards is mainly related to the convenience of use. In recent years, in order to use the keyboard smoothly in low light conditions or to improve the appearance of the keyboard, luminous keyboards have gradually been developed.

[0003] The basic structure of the illuminated keyboard is a stack of multiple layers of structures, including keycaps, keyboard base, backlight, and circuit boards. However, due to consumer demand for products, electronic products continue to develop in the direction of reducing size to meet consumer demand for thinness and portability. Therefore, the structure of the illuminated keyboard needs to be further improved to reduce the overall thickness of the keyboard. On the other hand, as the keyboard becomes thinner, the risk of overheating also increases. Therefore, how to improve heat dissipation performance is also one of the important considerations in keyboard design. Summary of the invention

[0004] Problem that the invention aims to solve

[0005] The prior art luminous keyboard has the problems of being too thick and having poor heat dissipation.

[0006] Technical means of solving problems

[0007] The main purpose of the present invention is to provide a luminous keyboard, which can effectively reduce the thickness of the keyboard and has better heat dissipation.

[0008] To achieve the above-mentioned purpose, according to a specific embodiment, the present invention provides a luminous keyboard, comprising: a metal base plate having an upper surface and a lower surface relative to each other; a light-emitting module, which comprises: a circuit structure having an upper surface and a lower surface relative to each other, and comprising a substrate and a circuit formed on the substrate; and a plurality of light-emitting elements electrically connected to the circuit; and an insulating heat-pressing sheet placed between the circuit structure and the metal base plate, and the circuit structure is adhered to the upper surface or the lower surface of the metal base plate through the insulating heat-pressing sheet.

[0009] According to another specific embodiment, the present invention provides a luminous keyboard as described above, wherein the luminous keyboard further includes an external circuit board electrically connected to the circuit, the circuit obtains power from the outside via the external circuit board and transmits it to the light-emitting element, wherein the total thickness of the circuit structure and the insulating heat pressing sheet is lower than the thickness of the external circuit board.

[0010] According to another specific embodiment, the present invention provides a luminous keyboard as described above, wherein the luminous keyboard further comprises a reflective layer on the substrate and covering the circuit, wherein the total thickness of the circuit structure, the insulating heat pressing sheet and the reflective layer is lower than the thickness of the external circuit board.

[0011] According to another specific embodiment, the present invention provides an luminous keyboard as described above, wherein the metal base plate is located above the light-emitting module, and the luminous keyboard further includes: a key module, disposed above the metal base plate; a backlight module, disposed below the circuit structure, the backlight module is configured to guide the light emitted by the light-emitting element to irradiate in the direction of the key module, wherein the multiple light-emitting elements are disposed on the lower surface of the circuit structure and embedded in the backlight module.

[0012] According to another specific embodiment, the present invention provides an luminous keyboard as described above, wherein the metal base plate is located below the circuit structure, and the luminous keyboard further includes: a key module, arranged above the light-emitting module; a backlight module, arranged below the metal base plate, the backlight module is used to guide the light emitted by the light-emitting element to irradiate in the direction of the key module, wherein the multiple light-emitting elements are arranged on the lower surface of the circuit structure and embedded in the backlight module.

[0013] According to another specific embodiment, the present invention provides a luminous keyboard as described above, wherein the metal base plate is below the light-emitting module, and the luminous keyboard further includes: a key module, disposed above the circuit structure; wherein the plurality of light-emitting elements are disposed on the upper surface of the circuit structure and configured to emit light in the direction of the key module.

[0014] According to another specific embodiment, the present invention provides an luminous keyboard as described above, wherein the key module includes a plurality of key units, and the positions of the plurality of light-emitting elements correspond to the positions of the plurality of key units respectively.

[0015] According to another specific embodiment, the present invention provides the luminous keyboard as described above, wherein the reflective layer is white ink.

[0016] According to another specific embodiment, the present invention provides the luminous keyboard as described above, wherein the metal base plate includes a plurality of holes, and the positions of the plurality of light-emitting elements correspond to the positions of the plurality of holes.

[0017] Comparison with the efficacy of previous technologies

[0018] The light-emitting module of the prior art is usually equipped with a general soft circuit board with upper and lower protective layers to control the light-emitting module. The light-emitting keyboard of the present invention uses an insulating heat-pressing sheet to directly bond the substrate with the circuit thereon to the metal bottom plate, eliminating the use of a general soft circuit board, which can effectively reduce the overall thickness of the keyboard and achieve a better heat dissipation effect.

[0019] In addition, the circuit on the substrate of the present invention is covered by a reflective layer, thereby increasing the amount of light reflected, thereby improving the luminous efficiency of the luminous keyboard. In addition, the luminous keyboard of the present invention can further improve the heat dissipation efficiency and / or improve the light effect by setting the luminous element at the hole of the metal bottom plate.

[0020] Further features and advantages of the invention will emerge from the following description of exemplary embodiments of the invention, and from the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The invention will be explained in more detail below with reference to exemplary embodiments shown in the accompanying drawings, in which:

[0022] Figure 1 is a partial cross-sectional schematic diagram of a luminous keyboard according to a first specific embodiment of the present invention;

[0023] Figure 2 is a partial exploded schematic diagram of a luminous keyboard according to a first specific embodiment of the present invention;

[0024] Figure 3 is a partial cross-sectional schematic diagram of a luminous keyboard according to a second specific embodiment of the present invention;

[0025] Figure 4 is a partial cross-sectional schematic diagram of an luminous keyboard according to a third specific embodiment of the present invention;

[0026] Figure 5 is a partial exploded schematic diagram of a luminous keyboard according to a third specific embodiment of the present invention;

[0027] Figure 6 is a partial cross-sectional schematic diagram of a luminous keyboard according to a fourth specific embodiment of the present invention; and

[0028] Figure 7 FIG. 4 is a partial exploded schematic diagram of a luminous keyboard according to a fourth specific embodiment of the present invention.

[0029]

Explanation of symbols

[0030] 1 Button module

[0031] 11 Button Unit

[0032] 12 Connection structure

[0033] 2 Thin Film Circuit Board

[0034] 3 Metal base

[0035] 4 Insulation hot pressing sheet

[0036] 5 Light emitting module

[0037] 50 Line structure

[0038] 51 Substrate

[0039] 52 lines

[0040] 53 Light-emitting element

[0041] 54 Reflection layer

[0042] 6 Backlight module

[0043] 7 External circuit board

[0044] 8. Hole

[0045] 100 Illuminated Keyboard

[0046] 100' Illuminated Keyboard

[0047] 200 Illuminated Keyboard

[0048] 300 Illuminated Keyboard

[0049] A1 Metal bottom plate bottom surface

[0050] A2 Upper surface of metal base

[0051] B1 Circuit structure bottom surface

[0052] B2 Circuit structure upper surface DETAILED DESCRIPTION

[0053] The following will describe in detail the preferred embodiments of the luminous keyboard of the present invention with reference to the relevant drawings, wherein the same components are described with the same component symbols. It should be understood that the following description provides many different embodiments or examples for implementing different aspects of the present disclosure. These different embodiments or examples are only used for illustrative purposes and are not intended to limit the present invention. Those skilled in the art may associate other advantages of the present invention based on the contents disclosed herein, so that the present invention may also be implemented or applied in different embodiments. Those skilled in the art may modify and / or change the specific embodiments based on different implementation methods and applications to implement the present invention without departing from its spirit and scope.

[0054] The invention provides an improved luminous keyboard, which can reduce the overall thickness of the keyboard and achieve a better heat dissipation effect. Figure 1 and Figure 2 The figures are respectively a partial cross-sectional schematic diagram and a partial three-dimensional exploded schematic diagram of the luminous keyboard 100 according to the first specific embodiment of the present invention. It should be understood that in order to simplify the drawings, some structures and elements of the prior art are not drawn to avoid blurring the present invention, and the drawings are only used to illustrate and explain the technical features of the present invention, and do not represent the actual size or number of the structures or elements.

[0055] First specific embodiment

[0056] Also refer to Figure 1 and Figure 2 The luminous keyboard 100 of the present invention includes a key module 1, a thin film circuit board 2, a metal base plate 3, an insulating heat-pressed sheet 4, a light-emitting module 5, a backlight module 6, and an external circuit board 7, wherein the key module 1 includes a plurality of key units 11 and a corresponding plurality of connection structures 12, and the light-emitting module 5 includes a circuit structure 50, at least one light-emitting element 53, and a reflective layer 54.

[0057] The key unit 11 is exposed on the surface of the luminous keyboard 100 for the user to press. The connecting structure 12 is disposed between the key unit 11 and the metal base plate 3, and is configured so that the key unit 11 can be reciprocated and lifted relative to the metal base plate 3. The key module 1 also includes a plurality of reset members (not shown), which correspond to the key units 11 respectively to provide a force for the key unit 11 to return to its original position after being pressed. The reset members can be rubber domes, metal springs, springs or magnetic elements. The thin film circuit board 2 is disposed below the key unit 11 and includes a plurality of key switches (not shown) for generating key signals corresponding to the pressing of the key unit 11. The operation and connection method between the key module 1 and the thin film circuit board 2 are substantially the same as those in the prior art and will not be described in detail herein.

[0058] The metal base plate 3 is disposed below the thin film circuit board 2 to support the key unit 11, the connection structure 12 and the thin film circuit board 2. The metal base plate 3 is made of, but not limited to, metal materials such as iron, copper, nickel, stainless steel, etc. The metal base plate 3 has a lower surface A1 and an upper surface A2 opposite to each other. Figure 1 and Figure 2 In the illustrated embodiment, the upper surface A2 faces the film circuit board 2 upward.

[0059] The light-emitting module 5 is disposed below the metal base plate 3. The circuit structure 50 of the light-emitting module 5 has a lower surface B1 and an upper surface B2 relative to each other, and includes a substrate 51 and a circuit 52. The substrate 51 can be a polymer resin film, such as polyimide (PI), polyethylene terephthalate (PET), or polyethylene naphthalate (PEN), but is not limited thereto. In a preferred embodiment, the substrate 51 is a polyimide (PI) film having a thickness ranging from about 1 micrometer (μm) to about 50 micrometers (μm). Figure 1 As shown, the circuit 52 can be formed on the lower surface of the substrate 51 by printing or etching, and its material can be copper, silver or other metals. The light emitting element 53 can be but not limited to a light emitting diode, which is disposed on the substrate 51 and electrically connected to the circuit 52.

[0060] The insulating heat-pressing sheet 4 is disposed between the upper surface B2 of the circuit structure 50 and the lower surface A1 of the metal base plate 3 to adhere the upper surface B2 of the circuit structure 50 to the lower surface A1 of the metal base plate 3. The insulating property of the insulating heat-pressing sheet 4 can prevent the circuit 52 from being electrically connected to the metal base plate 3.

[0061] In this embodiment, the reflective layer 54 can be printed, coated, evaporated, laminated or other appropriate methods are provided on part of the lower surface of the substrate 51, and the reflective layer 54 covers the circuit 52 to further reflect the light emitted by the light-emitting element 53, thereby increasing the light extraction efficiency. In this embodiment, the reflective layer 54 can be a light-colored ink layer with a reflective effect such as white, silver, light gray, etc., or a film or coating with reflective properties, but the present invention is not limited thereto. It is worth noting that since the reflective layer 54 covers the circuit 52, it can further prevent the light emitted by the light-emitting element 53 from changing the light color by passing through the circuit 52. For example, if the circuit 52 is a copper circuit, if the reflective layer 54 does not cover the circuit 52, the light emitted by the light-emitting element 53 may pass through the copper circuit and have a red copper color. The provision of the reflective layer 54 in this embodiment can solve the above problem. In addition, the reflective layer 54 is an optional component, and the present invention includes other examples where the reflective layer is not used.

[0062] The backlight module 6 is disposed below the light emitting module 5. The backlight module 6 includes, for example, a light shielding sheet, a light guide plate, a reflective sheet, and a housing space for housing the light emitting element 53. Its principle and structure are the same as those of the prior art and are not described in detail here. In the first specific embodiment, the light emitting element 53 is disposed on the lower surface B1 of the circuit structure 50 in an inverted manner (light is emitted toward the backlight module 6), one end of which is electrically connected to the circuit 52 and the other end is embedded in the backlight module 6. The backlight module 6 is configured to guide the light emitted by the light emitting element 53 to irradiate in the direction of the key unit 11, so that the keyboard 100 produces a luminous effect.

[0063] refer to Figure 2, the luminous keyboard 100 also includes an external circuit board 7 electrically connected to the circuit 52, which is configured to receive an external power supply or connect to an external electronic device (such as a computer host, etc.). The external circuit board 7 can be connected to the circuit 52 by hot-melt welding. The circuit 52 obtains power from the outside through the external circuit board 7, and then transmits the power to the light-emitting element 53 to make it emit light. In this embodiment, the external circuit board 7 is a flexible circuit board. In actual implementation, other materials such as printed circuit boards can be selected according to needs, but the present invention is not limited to this. It should be noted that the external circuit board 7 includes an upper protective layer, a circuit board body (which is composed of, for example, a polyimide substrate and a copper etching circuit), and a lower protective layer stacked on each other, and its thickness is about 0.2 mm. In contrast, the substrate 51 and the circuit 52 of the present invention are attached to the metal base plate 3 through an insulating hot pressing sheet 4. A substrate 51 and an insulating hot pressing sheet 4 are provided above the circuit 52, and a backlight module is provided below the circuit 52, so no additional upper and lower protective layers are required. In this embodiment, the total thickness of the substrate 51, the circuit 52, the reflective layer 54, and the insulating heat-pressing sheet 4 of the present invention is only about 0.07 mm to 0.08 mm. In the embodiment without the reflective layer 54, the thickness of the substrate 51, the circuit 52, and the insulating heat-pressing sheet 4 will be even lower. From the above, it can be seen that the total thickness of the substrate 51, the circuit 52, the insulating heat-pressing sheet 4, and the optional reflective layer 54 of the present invention is lower than the thickness of the external circuit board 7, which is used to effectively improve the thinness of the luminous keyboard 100.

[0064] Based on the above, it can be seen that compared with the prior art which uses a general flexible circuit board with upper and lower protective layers and has a thickness of about 0.2 mm, the present invention uses an insulating heat-pressing sheet 4 to bond the circuit structure 50 to the metal base plate 3, which can reduce the overall thickness of the keyboard and reduce the manufacturing cost. In addition, since the circuit structure 50 and the light-emitting element 53 are bonded to the metal base plate 3 only through the insulating heat-pressing sheet 4, the distance between the circuit 52 and the light-emitting element 53 and the metal base plate 3 can be effectively shortened, and the heat energy generated by the circuit 52 and the light-emitting element 53 can be more efficiently transferred to the metal base plate 3, thereby achieving a better heat dissipation effect.

[0065] Second specific embodiment

[0066] Figure 3It is a partial cross-sectional schematic diagram of the luminous keyboard 100' according to the second specific embodiment of the present invention, and its structure is substantially the same as that of the luminous keyboard 100 of the first specific embodiment, and the similarities are not repeated here. The difference between the first and second specific embodiments is that the light-emitting element 53 of the luminous keyboard 100' is arranged to align with the hole 8 of the metal bottom plate 3 to further improve the heat dissipation efficiency. Preferably, the hole 8 can be a structural hole or a dustproof hole under the key unit 11. The dustproof hole is arranged under the key switch corresponding to the thin film circuit board 2 to prevent the key switch from being abnormally triggered when dust or foreign matter accumulates under the key switch. It is worth mentioning that in the present embodiment, the luminous keyboard 100' further includes a plurality of reset parts, which are light-transmitting rubber domes (not shown in the figure). The rubber domes are arranged corresponding to the key switches and cover the holes 8. Generally speaking, the brightness around the light-emitting element 53 is higher, and the light emitted by the light-emitting element 53 can be diffused by the rubber domes, so that the light around the light-emitting element 53 is more uniform and soft. Therefore, the light-emitting element 53 is arranged at the dustproof hole, which can not only increase the heat dissipation efficiency, but also improve the light diffusion to further improve the light effect.

[0067] Third specific embodiment

[0068] Figure 4 and Figure 5 They are respectively a cross-sectional schematic diagram and a three-dimensional exploded schematic diagram of the luminous keyboard 200 according to the third specific embodiment of the present invention, which differs from the first specific embodiment in the relative positional relationship of the various layers of the metal base plate 3, the light-emitting module 5, etc. In the third specific embodiment, the circuit structure 50 of the light-emitting module 5 is located above the metal base plate 3. In detail, in the third specific embodiment, the components of the luminous keyboard 200 are installed in the order of key unit 11, film circuit board 2, substrate 51, circuit 52, reflective layer 54, insulating hot pressing sheet 4, metal base plate 3 and backlight module 6 from top to bottom. In this specific embodiment, the same components will continue to use the aforementioned component symbols, and the same technical features will not be repeated.

[0069] Also refer to Figure 4 and Figure 5 , the upper surface A2 of the metal bottom plate 3 faces the film circuit board 2 above. The circuit structure 50 is placed above the metal bottom plate 3, and the insulating heat pressing sheet 4 is arranged between the lower surface B1 of the circuit structure 50 and the upper surface A2 of the metal bottom plate 3. The circuit structure 50 is attached to the upper surface A2 of the metal bottom plate 3 by the insulating heat pressing sheet 4.

[0070] In this specific embodiment, the reflective layer 54 is formed on the lower surface B1 of the circuit structure 50 and covers the circuit 52. The reflective layer 54 is a selective element, and the present invention also includes an embodiment without the reflective layer 54. In addition, in another embodiment, the insulating heat-pressing sheet 4 is attached in a manner that avoids the reflective layer 54 (for example, the insulating heat-pressing sheet 4 is made into a dot or grid shape). The backlight module 6 is disposed below the lower surface A1 of the metal base plate 3. In this specific embodiment, the light-emitting element 53 is disposed on the lower surface B1 of the circuit structure 50 in an inverted manner (light is emitted toward the backlight module 6), which is electrically connected to the circuit 52 and embedded downward in the accommodation space of the backlight module 6. In this specific embodiment, the light-emitting element 53 passes through the metal base plate 3 and is embedded downward in the accommodation space of the backlight module 6. The backlight module 6 is configured to guide the light emitted by the light-emitting element 53 toward the direction of the key unit 11. In this specific embodiment, the light emitting element 53 is disposed at the hole 8 of the metal bottom plate 3 to enhance heat dissipation and / or improve light effect. However, the present invention is not limited thereto, and the light emitting element 53 may also be disposed at other positions of the metal bottom plate 3 .

[0071] In another embodiment, the circuit 52 of the third embodiment can be combined with the film circuit board 2 above, that is, the circuit 52 and the film circuit board 2 above are combined into a multi-layer circuit board structure, so that the substrate 51 can be omitted (because the film circuit board 2 is already supported). Then, the multi-layer circuit board structure is attached to the upper surface A2 of the metal base plate 3 using the insulating hot pressing sheet 4.

[0072] Fourth specific embodiment

[0073] Figure 6 and Figure 7 They are respectively a partial cross-sectional schematic diagram and a three-dimensional exploded schematic diagram of the luminous keyboard 300 according to the fourth embodiment of the present invention. In the fourth embodiment, the circuit structure 50 of the luminous module 5 is located above the metal base plate 3. In detail, in the fourth embodiment, the components of the luminous keyboard 200 are installed in the order of key unit 11, film circuit board 2, reflective layer 54, circuit 52, substrate 51, insulating hot pressing sheet 4, and metal base plate 3 from top to bottom. In this embodiment, the same components will use the aforementioned component symbols, and the same technical features will not be repeated.

[0074] Also refer to Figure 6 and Figure 7, the circuit structure 50 is placed above the metal base plate 3 and the lower surface B1 of the circuit structure 50 is attached to the upper surface A1 of the metal base plate 3 using the insulating hot pressing sheet 4. Different from the luminous keyboard 200, the light-emitting element 53 of the luminous keyboard 300 is not disposed on the circuit structure 50 in an inverted manner, but is disposed on the upper surface B2 of the circuit structure 50 and emits light upward toward the key unit 11. A corresponding light-emitting element 53 is disposed below each key unit 11, so the backlight module 6 can be omitted. In other specific embodiments, multiple key units 11 can correspond to one light-emitting element 53, or one key unit 11 can correspond to multiple light-emitting elements 53. The reflective layer 54 is a selective element, and the present invention also includes an embodiment without the reflective layer 54.

[0075] From the above detailed description of the specific embodiments of the present invention, it can be seen that the luminous keyboard of the present invention uses an insulating heat-pressing sheet to bond a substrate with a circuit structure formed on the surface to a metal base plate, thereby replacing the prior art use of a flexible circuit board which has the disadvantage of being thick due to the upper and lower protective layers, thereby achieving the purpose of reducing the thickness of the keyboard. In addition, since the distance between the circuit structure and the light-emitting element and the metal base plate is shortened, a better heat dissipation effect can be achieved. In addition, the luminous keyboard of the present invention covers the circuit structure by printing or coating a light-colored reflective layer on the substrate, thereby improving the light reflection efficiency and thereby improving the overall light output. On the other hand, the luminous keyboard of the present invention further improves the heat dissipation efficiency and / or improves the light effect by arranging the light-emitting element at the hole in the metal base plate.

[0076] Although preferred embodiments of the present invention have been disclosed herein, it should be understood that the embodiments and features described above are provided as examples only and are not intended to limit the present invention. Many changes and substitutions may be made by one of ordinary skill in the art without departing from the present invention. Therefore, the present invention should be broadly interpreted as covering all changes, modifications and alternative embodiments within the spirit and scope of the claims.

Claims

1. A luminous keyboard, characterized in that: Include: A metal bottom plate having an upper surface and a lower surface opposite to each other; A light emitting module, comprising: A circuit structure has an upper surface and a lower surface opposite to each other, and includes a substrate and a circuit formed on the substrate; and a plurality of light emitting elements electrically connected to the circuit; as well as An insulating heat-pressing sheet is placed between the circuit structure and the metal bottom plate, and the circuit structure is adhered to the upper surface or the lower surface of the metal bottom plate through the insulating heat-pressing sheet.

2. The luminous keyboard according to claim 1, characterized in that: The luminous keyboard also includes an external circuit board electrically connected to the circuit, and the circuit obtains power from the outside through the external circuit board and transmits it to the luminous element, wherein the total thickness of the circuit structure and the insulating heat pressing sheet is lower than the thickness of the external circuit board.

3. The luminous keyboard according to claim 2, characterized in that: The light-emitting module further comprises a reflective layer on the substrate and covering the circuit, wherein the total thickness of the circuit structure, the insulating heat-pressing sheet and the reflective layer is lower than the thickness of the external circuit board.

4. The luminous keyboard according to any one of claims 1 to 3, characterized in that: The metal base plate is located above the light-emitting module. The light-emitting keyboard further comprises: A key module is arranged above the metal bottom plate; A backlight module is arranged below the circuit structure, and is used for guiding the light emitted by the light emitting element to illuminate the key module, wherein the plurality of light emitting elements are arranged on the lower surface of the circuit structure and embedded in the backlight module.

5. The luminous keyboard according to any one of claims 1 to 3, characterized in that: The metal base plate is located below the circuit structure. The luminous keyboard also includes: A button module is arranged above the light emitting module; A backlight module is arranged below the metal base plate, and is used for guiding the light emitted by the light emitting element to illuminate the key module, wherein the plurality of light emitting elements are arranged on the lower surface of the circuit structure and embedded in the backlight module.

6. The luminous keyboard according to any one of claims 1 to 3, characterized in that: The metal base plate is below the light-emitting module. The light-emitting keyboard further comprises: A button module is arranged above the circuit structure; The plurality of light emitting elements are disposed on the upper surface of the circuit structure and are configured to emit light toward the key module.

7. The luminous keyboard according to claim 6, characterized in that: The key module includes a plurality of key units, and the positions of the plurality of light emitting elements correspond to the positions of the plurality of key units respectively.

8. The luminous keyboard according to claim 3, characterized in that: The reflective layer is white ink.

9. The luminous keyboard according to any one of claims 1 to 3, characterized in that: The metal bottom plate includes a plurality of holes, and the positions of the plurality of light emitting elements correspond to the positions of the plurality of holes.

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