Key mechanism and electronic device thereof

Abstract

The invention relates to a key mechanism and an electronic device thereof, in particular to a key mechanism applied to an electronic device to provide a dynamic pattern effect, which comprises a shell, a total reflection assembly, a half reflection element, an actuating module and an operating piece. The total reflection assembly is movably arranged in the shell. The semi-reflection element is located in the shell and arranged relative to the total reflection assembly. The actuating module is connected to the total reflection assembly. The operating piece is arranged on one surface, opposite to the total reflection assembly, of the semi-reflection element. The operating part is suitable for driving the actuating module, so that the total reflection assembly acts relative to the semi-reflection element. According to the embodiment of the invention, the total reflection assembly is further actuated or reciprocated relative to the displacement of the semi-reflection element by utilizing the driving piece of the actuating module, so that the key mechanism can provide infinite virtual image patterns with dynamic sense, and the lighting effect and attractiveness of the electronic device can be greatly improved.

Description

Technical Field

[0001] The present invention provides a key mechanism and an electronic device, particularly a key mechanism capable of providing a dynamic pattern effect and its electronic device. Background Art

[0002] With the progress of technology, computer devices can customize the light effects on the appearance of the casing, making the overall device look more aesthetically pleasing. Common light effects on the casing appearance are using light strips to decorate the periphery of the casing or installing light-emitting switches on the casing. Traditional light-emitting switches are made of a light-transmitting material for the outer cover of the electronic switch or installing a lighting source around the non-light-transmitting electronic switch. The light emitted by the lighting source penetrates the switch outer cover to form a light-emitting switch. However, the static lighting effect of traditional light-emitting switches is relatively monotonous. Therefore, how to design a light-emitting switch with a dynamic pattern effect is one of the development goals of the related computer device industry. Summary of the Invention

[0003] The present invention provides a key mechanism and an electronic device capable of providing a dynamic pattern effect to solve the above problems.

[0004] The present invention discloses a key mechanism, which includes a housing, a total reflection component, a semi-reflection element, an actuation module, and an operating member. The total reflection component is movably disposed within the housing. The semi-reflection element is located within the housing and is disposed relative to the total reflection component. The actuation module is connected to the total reflection component. The operating member is disposed on a surface of the semi-reflection element opposite to the total reflection component. The operating member is adapted to drive the actuation module to actuate the total reflection component relative to the semi-reflection element.

[0005] The present invention further discloses that the total reflection component includes a total reflection mirror and a light-emitting element, and the light-emitting element is disposed on a side of the total reflection mirror away from the semi-reflection element.

[0006] The present invention further discloses that the total reflection component includes a total reflection mirror and a light-emitting element, and the light-emitting element is disposed on a side edge of the total reflection mirror.

[0007] The present invention further discloses that the total reflection mirror is provided with a groove, and a light source of the light-emitting element is adapted to pass through the groove to form a pattern. The groove is disposed on a side of the total reflection mirror facing the semi-reflection element, or away from the semi-reflection element, or within the total reflection mirror.

[0008] The present invention further discloses that the actuation module includes a bridging member and a driving member. The driving member is connected to the total reflection component. The bridging member is movably disposed on a side surface of the housing. The bridging member is adapted to be pushed by the operating member to drive the driving member to cause the total reflection component to perform the actuation.

[0009] The present invention further discloses that the bridging member is spaced apart from the operating member or integrally formed with the operating member.

[0010] The present invention further discloses that the bridging member is provided with a rack structure, the driving member includes a gear, a cam and a connecting shaft, the gear and the cam are respectively arranged at two opposite ends of the connecting shaft, the cam abuts against the total reflection component, and the gear is adapted to mesh with the rack structure.

[0011] The present invention further discloses that the driving member further includes a torsion spring arranged on the connecting shaft and adapted to provide an elastic restoring force to drive the cam to pull the total reflection component to generate the actuation.

[0012] The present invention further discloses that the bridging member is a plate body, the driving member is a compression spring arranged on a surface of the total reflection component away from the semi-reflection element, and the plate body is adapted to push the total reflection component so that the compression spring accumulates an elastic restoring force.

[0013] The present invention further discloses that the key mechanism further includes a reset element arranged between the operating member and the housing member.

[0014] The present invention further discloses an electronic device, which includes a housing and a key mechanism. The key mechanism is arranged in the housing. The key mechanism includes a housing member, a total reflection component, a semi-reflection element, an actuation module and an operating member. The total reflection component is movably arranged in the housing member. The semi-reflection element is located in the housing member and is arranged relative to the total reflection component. The actuation module is connected to the total reflection component. The operating member is arranged between the housing and the housing member of the key mechanism and on a surface of the semi-reflection element opposite to the total reflection component. The operating member is adapted to drive the actuation module to make the total reflection component act relative to the semi-reflection element.

[0015] The present invention further discloses that the housing member is provided with an electronic switch, and the bridging member is adapted to be driven by the operating member to trigger the electronic switch, so that a light source is emitted by a light-emitting element of the total reflection component.

[0016] The key mechanism and the electronic device of the present invention provide a linkage mechanism between the operating member and the total reflection component through the actuation module. When the operating member of the key mechanism is pressed, it not only triggers the electronic switch to meet the basic requirement of starting the electronic device, but also can drive the total reflection component to displace relative to the semi-reflection element by using the bridging member of the actuation module, and further actuate or form a reciprocating motion of the total reflection component relative to the semi-reflection element by using the driving member of the actuation module, so that the key mechanism can provide an infinite virtual image pattern with a sense of rhythm, which can greatly improve the light effect aesthetics of the electronic device. Description of the Drawings

[0017] Figure 1The figure shows a schematic external view of the electronic device according to an embodiment of the present invention;

[0018] Figure 2 The figure shows an exploded view of the components of the button mechanism according to some embodiments of the present invention;

[0019] Figures 3 to 6 The figure shows a schematic view of the button mechanism at different operation stages according to some embodiments of the present invention;

[0020] Figures 7 to 10 The figure shows a schematic view of the button mechanism at different operation stages according to other embodiments of the present invention.

[0021]

Explanation of the reference numerals

[0022] 10, Electronic device;

[0023] 12, Housing;

[0024] 14, 14A, Button mechanism;

[0025] 16, Electronic switch;

[0026] 18, Housing member;

[0027] 20, Total reflection component;

[0028] 22, Semi-reflective element;

[0029] 24, Actuating module;

[0030] 26, Operating member;

[0031] 28, Reset element;

[0032] 30, Opening;

[0033] 32, Receiving portion;

[0034] 34, Total reflection mirror;

[0035] 36, Light-emitting element;

[0036] 38, Groove;

[0037] 40, 40A, Bridging member;

[0038] 42, 42A, Driving member;

[0039] 44, Rack structure;

[0040] 46, Gear;

[0041] 48, Cam;

[0042] 50, Connecting shaft;

[0043] 52, Torsion spring;

[0044] D1, the first direction;

[0045] D2, the second direction;

[0046] R1, the first rotation direction;

[0047] R2, the second rotation direction. Detailed implementation

[0048] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic external view of the electronic device 10 according to an embodiment of the present invention, Figure 2 and is an exploded view of the components of the key mechanism 14 in some embodiments of the present invention. The electronic device 10 can be various types of computer devices, which includes a housing 12 and a key mechanism 14. Many electronic components can be arranged inside the housing 12, such as an electronic switch 16; other electronic components such as a circuit board, a hard disk, a memory, a cooling fan, etc. are not drawn in the drawings. The key mechanism 14 is arranged on the housing 12 to actuate the electronic switch 16. The key mechanism 14 of the present invention can provide a special lighting effect; when the key mechanism 14 is not operated, the key mechanism 14 provides a static infinite virtual image pattern; when the user presses the key mechanism 14, the key mechanism 14 can present an infinite virtual image pattern with a sense of rhythm.

[0049] Such as Figure 2As shown, the key mechanism 14 may include a housing 18, a total reflection component 20, a semi-reflection element 22, an actuation module 24, an operating member 26, and a reset element 28. The housing 18 may be fitted into the assembly hole of the chassis 12 and has a compatible placement portion 32 surrounded by a plurality of side surfaces and a bottom surface (not labeled), and an opening 30 surrounded by one side of the plurality of side surfaces. The opening 30 communicates with the placement portion 32. An electronic switch 16 is provided inside the housing 18. The total reflection component 20 is movably disposed within the placement portion 32. The semi-reflection element 22 is disposed within the placement portion 32 and is closer to the opening 30 than the total reflection component 20, that is, the total reflection component 20 is closer to the bottom surface of the housing 18 than the semi-reflection element 22. The actuation module 24 is connected to the total reflection component 20, and its varying states will be described later. The operating member 26 is movably disposed adjacent to the opening 30. The operating member 26 is located on the side of the semi-reflection element 22 opposite to the total reflection component 20, and a part of the operating member 26 is exposed to the assembly hole of the chassis 12. The operating member 26 is adapted to cause the total reflection component 20 to emit a light source through the actuation module 24. The reset element 28 is disposed within the accommodation space and is linked to the operating member 26. It should be noted that the connection methods mentioned here include direct connection or indirect connection. In some embodiments, the total reflection component 20 is provided with a light source that irradiates the semi-reflection element 22, so that a part of the light source penetrates through the semi-reflection element 22 and is emitted to the external space through the operating member 26, and another part of the light source is reflected back and forth between the semi-reflection element 22 and the total reflection component 20.

[0050] In some embodiments, the total reflection component 20 may include a total reflection mirror 34 and a light emitting element 36. The light emitting element 36 may be disposed on the side of the total reflection mirror 34 or on the side of the total reflection mirror 34 away from the semi-reflection element 22. The total reflection mirror 34 is provided with a groove 38, and the groove 38 may be disposed on the side of the total reflection mirror 34 facing or away from the semi-reflection element 22, or disposed within the total reflection mirror 34. Therefore, the light source emitted by the light emitting element 36 passes through the groove 38 and forms a pattern according to the arrangement position of the groove 38. Figure 2 For example, the annular groove 38 will form an annular illumination pattern. When the light source emitted by the light emitting element 36 passes through the groove 38 of the total reflection mirror 34 and irradiates the semi-reflection element 22, the semi-reflection element 22 will reflect the annular illumination pattern back to the total reflection mirror 34, and the total reflection mirror 34 will reflect the annular illumination pattern back to the semi-reflection element 22 again; the light source is reflected back and forth between the total reflection mirror 34 and the semi-reflection element 22, and a multi-annular illumination pattern in the form of concentric circles can be formed. When the key mechanism 14 is not operated, the multi-annular illumination pattern emitted by the key mechanism 14 belongs to a static infinite virtual image pattern.

[0051] In some embodiments, the semi-reflective element 22 is located on the side of the operating member 26 facing the total reflection assembly 20 and is spaced from the operating member 26; alternatively, the semi-reflective element 22 can also be directly attached to the operating member 26, and its variation depends on the design requirements. In some embodiments, the operating member 26 is made of a transparent or semi-transparent material, so that the light source emitted by the light-emitting element 36 can partially pass through the operating member 26 and be emitted into the external space. The infinite virtual image pattern formed by the light source reflecting back and forth between the total reflection mirror 34 and the semi-reflective element 22 can pass through the operating member 26 and be directly visually observed by the user, which means that the key mechanism 14 can provide a special lighting effect. It should be particularly mentioned that the semi-reflective element 22 is an optical element with semi-penetrating and semi-reflecting properties, and there is no specific numerical limit on the ratio of light penetration and reflection, which depends on the design requirements.

[0052] The actuation module 24 may include a bridging member 40 and a driving member 42. In some embodiments, the bridging member 40 can be designed as a plate body, disposed between the operating member 26 and the total reflection assembly 20, and is movably disposed on the side of the housing 18. Its placement position can be spaced from the operating member 26 or directly connected to the operating member 26. The bridging member 40 is adapted to be linked to the operating member 26 and actuate the total reflection assembly 20. The driving member 42 is a compression spring disposed at the bottom of the total reflection assembly 20. In some embodiments, the bridging member 40 is disposed spaced from the operating member 26. When the user presses the operating member 26, the operating member 26 moves a certain stroke in the first direction D1 before contacting the bridging member 40, and this stroke is the spacing distance between the bridging member 40 and the operating member 26. The bridging member 40 is pushed by the operating member 26 and continuously pushes the total reflection assembly 20 in the first direction D1, causing the driving member 42 (compression spring) to undergo elastic deformation. After the external force pressing on the operating member 26 is removed and the elastic restoring force stored in the driving member 42 is released, the total reflection assembly 20 can be pulled to generate a reciprocating motion. In some embodiments, the bridging member 40 and the operating member 26 are integrally formed. When the user presses the operating member 26, the operating member 26 and the bridging member 40 move simultaneously in the first direction D1, and the bridging member 40 is adapted to contact the total reflection assembly 20 to cause the driving member 42 to undergo elastic deformation.

[0053] In addition, the reset element 28 is located in the accommodating portion 32 and can be connected between the operating member 26, and is adapted to drive the operating member 26 to return to the initial position. Therefore, the reset element 28 is also a compression spring. When the operating member 26 is pressed, it stores elastic restoring force due to elastic compression and releases its elastic restoring force when the pressing external force is removed, causing the operating member 26 to reset. In some embodiments, the reset elements 28 are respectively disposed at the four corners of the housing 18, but the actual application is not limited thereto, which depends on the design requirements.

[0054] Please refer to Figures 3 to 6 , Figures 3 to 6This is a schematic diagram of the key mechanism 14 in some embodiments of the present invention at different operation stages. As Figure 3 shown, the operating member 26 is located at the initial position and is spaced apart from the bridging member 40 of the actuating module 24; at this time, both the driving member 42 (compression spring) and the reset element 28 (compression spring) are in an uncompressed and deformed state. As Figure 4 shown, when the operating member 26 is pressed downward by an external force and touches the bridging member 40, in addition to triggering the electronic switch 16 (that is, the bridging member 40 is driven by the operating member 26 to trigger) to cause the light-emitting element 36 of the total reflection assembly 20 to emit light, the bridging member 40 can be further pressed to drive the total reflection assembly 20 to move away from the opening 30 along the first direction D1; at this time, both the driving member 42 (compression spring) and the reset element 28 (compression spring) are in a compressed and deformed state.

[0055] As Figure 5 shown, when the user removes the pressing external force applied to the operating member 26, the reset element 28 (compression spring) will release its elastic restoring force and drive the operating member 26 back to Figure 3 the initial position shown; the driving member 42 (compression spring) will also release its elastic restoring force to drive the total reflection assembly 20 to move toward the opening 30 along the second direction D2. Since the driving member 42 has an elastic restoring force and the total reflection assembly 20 is in a free state in the first direction D1 and the second direction D2, as Figure 6 shown, when the driving member 42 releases its elastic restoring force, it can drive the total reflection assembly 20 to reciprocate under the drive of the driving member 42. More specifically, the total reflection assembly 20 can move away from the opening 30 along the first direction D1 and then move back toward the opening 30 along the second direction D2 to form a reciprocating motion until the elastic restoring force of the driving member 42 (compression spring) is released and gradually weakens to a stop state. In other words, the actuating module 24 will pull the total reflection assembly 20 to reciprocate relative to the semi-reflective element 22, so that the static infinite virtual image pattern will provide a visual effect of a dynamic pattern with the reciprocating motion of the total reflection assembly 20 by the operating member, that is, an infinite virtual image pattern with a sense of rhythm.

[0056] Please refer to Figures 7 to 10 , Figures 7 to 10 This is a schematic diagram of the key mechanism 14A in other embodiments of the present invention at different operation stages. In this embodiment, the elements with the same numbers as the previous embodiments have the same structure and function, and will not be repeated here. The actuating module 24 of the key mechanism 14A includes a bridging member 40A and a driving member 42A, and the driving member 42A is a driving combination formed by combining multiple components. As Figure 7As shown, the bridging member 40A can be a plate body with a rack structure 44, and the driving member 42A includes a gear 46, a cam 48, a connecting shaft 50, and a torsion spring 52. The gear 46 and the cam 48 are respectively arranged at opposite ends of the connecting shaft 50. The cam 48 abuts against the total reflection assembly 20, and the gear 46 can selectively mesh with the rack structure 44 of the bridging member 40A in a separable manner. The torsion spring 52 is sleeved on the connecting shaft 50. Opposite ends of the torsion spring 52 can be respectively connected to the housing member 18 and the cam 48 to drive the cam 48 to drive the connecting shaft 50 to rotate within the housing member 18 by using the elastic restoring force of the torsion spring 52; alternatively, opposite ends of the torsion spring 52 can also be respectively connected to the housing member 18 and the gear 46, and the elastic restoring force of the torsion spring 52 can be used to drive the gear 46 to drive the connecting shaft 50 to rotate within the housing member 18.

[0057] As Figure 7 shown, the operating member 26 is in the initial position and is spaced from the bridging member 40A of the actuating module 24; at this time, the torsion spring 52 of the driving member 42 and the restoring element 28 (compression spring) are both in an uncompressed and deformed state. As Figure 8 shown, when the operating member 26 is pressed downward by an external force and touches the bridging member 40A, in addition to triggering the electronic switch 16, the rack structure 44 of the bridging member 40A will also drive the gear 46 to rotate along the first rotation direction R1. The rotation of the gear 46 drives the cam 48 to generate a synchronous rotation in the first rotation direction R1 through the connecting shaft 50, and the total reflection assembly 20 moves away from the opening 30 along the first direction D1 by gravity; at this time, the torsion spring 52 of the driving member 42 and the restoring element 28 (compression spring) are both in a compressed and deformed state.

[0058] As Figure 9 shown, when the user removes the pressing external force applied to the operating member 26, the restoring element 28 (compression spring) will release its elastic restoring force and drive the operating member 26 back to Figure 7 the initial position shown; the torsion spring 52 of the driving member 42 will also release its elastic restoring force to drive the gear 46, the cam 48, and the connecting shaft 50 to rotate synchronously along the second rotation direction R2. The gear 46 rotating along the second rotation direction R2 can drive the bridging member 40A back to Figure 7In the initial position shown, when the cam 48 is driven by the connecting shaft 50 to rotate along the second rotation direction R2, the cam 48 abuts against the total reflection component 20 with its periphery. Since the distances from the periphery of the cam 48 to the axis of the connecting shaft 50 are not equal, the cam 48 can drive the total reflection component 20 to reciprocate in the first direction D1 and the second direction D2 until the elastic force of the torsion spring 52 gradually weakens to a stop state. In other words, the actuation module 24 can pull the total reflection component 20 to act relative to the semi-reflection element 22, so that the static infinite virtual image illumination pattern provides a visual effect of a dynamic pattern with the reciprocating movement of the total reflection component 20, that is, an infinite virtual image pattern with a sense of rhythm.

[0059] In particular, the peripheral design of the cam 48 is not limited to Figures 7 to 10 the implementation aspect shown, but depends on the design requirements. For example, in other embodiments, the cam 48 is designed with an egg-shaped cross-section. In the Figure 7 initial state shown, the long axis end of the egg-shaped cross-section of the cam 48 abuts against the total reflection component 20, which can cause the total reflection component 20 to move first downward and then upward; if the cam 48 abuts against the total reflection component 20 with the short axis end of the egg-shaped cross-section in the initial state, the total reflection component 20 can be made to move first upward and then downward. There are various actual application variations, which will not be described separately here.

[0060] In summary, the key mechanism and the electronic device of the present invention provide a linkage mechanism between the operating member and the total reflection component through the actuation module. When the operating member of the key mechanism is pressed, it not only triggers the electronic switch to meet the basic requirement of starting the electronic device, but also can drive the total reflection component to displace relative to the semi-reflection element by the bridging member of the actuation module, and further actuate or form a reciprocating movement of the displacement of the total reflection component relative to the semi-reflection element by the driving member of the actuation module. Thus, the key mechanism can provide an infinite virtual image pattern with a sense of rhythm, which can greatly improve the optical beauty of the electronic device.

[0061] The above are only the preferred embodiments of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims

1. A key mechanism, characterized in that, Comprising: A housing member; A total reflection component, movably disposed within the housing member; A semi-reflection element, located within the housing member and disposed relative to the total reflection component; An actuating module, connected to the total reflection component; And An operating member, disposed on a surface of the semi-reflection element opposite to the total reflection component; Wherein, the operating member is adapted to drive the actuating module to actuate the total reflection component relative to the semi-reflection element.

2. The key mechanism according to claim 1, wherein, The total reflection component includes a total reflection mirror and a light-emitting element, and the light-emitting element is disposed on a side of the total reflection mirror away from the semi-reflection element.

3. The key mechanism according to claim 1, wherein The total reflection component includes a total reflection mirror and a light-emitting element, and the light-emitting element is disposed on a side edge of the total reflection mirror.

4. The key mechanism according to claim 3, characterized in that, The total reflection mirror is provided with a groove, and a light source of the light-emitting element is adapted to pass through the groove to form a pattern, and the groove is disposed on a side of the total reflection mirror facing the semi-reflection element, or away from the semi-reflection element, or within the total reflection mirror.

5. The key mechanism according to claim 1, characterized in that, The actuating module includes a bridging member and a driving member, the driving member is connected to the total reflection component, the bridging member is movably disposed on a side surface of the housing member, and the bridging member is adapted to be pushed by the operating member to drive the driving member to actuate the total reflection component.

6. The key mechanism according to claim 5, wherein The bridging member is spaced from the operating member, or integrally formed with the operating member.

7. The key mechanism according to claim 5, characterized in that, The bridging member is provided with a rack structure, the driving member includes a gear, a cam and a connecting shaft, the gear and the cam are respectively disposed at two opposite ends of the connecting shaft, the cam abuts against the total reflection component, and the gear is adapted to mesh with the rack structure.

8. The key mechanism according to claim 7, wherein The driving member further includes a torsion spring, disposed on the connecting shaft, adapted to provide an elastic restoring force to drive the cam to pull the total reflection component to produce the actuation.

9. The key mechanism according to claim 5, wherein, The bridging member is a plate body, the driving member is a compression spring, disposed on a side of the total reflection component away from the semi-reflection element, and the plate body is adapted to push the total reflection component to accumulate an elastic restoring force in the compression spring.

10. The key mechanism according to claim 1, wherein The key mechanism further includes a reset element, disposed between the operating member and the housing member.

11. An electronic device, characterized in that, Comprising: A chassis; and A key mechanism, disposed within the chassis, the key mechanism comprising: A housing member; A total reflection component, movably disposed within the housing member; A semi-reflection element, located within the housing member and disposed relative to the total reflection component; An actuating module, connected to the total reflection component; And An operating member, disposed between the chassis and the housing member of the key mechanism, and disposed on a surface of the semi-reflection element opposite to the total reflection component; Wherein, the operating member is adapted to drive the actuating module to actuate the total reflection component relative to the semi-reflection element.

12. The electronic device according to claim 11, wherein The total reflection component includes a total reflection mirror and a light-emitting element, and the light-emitting element is disposed on a side of the total reflection mirror away from the semi-reflection element.

13. The electronic device according to claim 11, wherein, The total reflection component includes a total reflection mirror and a light-emitting element, and the light-emitting element is disposed on a side edge of the total reflection mirror.

14. The electronic device according to claim 13, characterized in that, The total reflection mirror is provided with a groove, and a light source of the light-emitting element is adapted to pass through the groove to form a pattern, and the groove is disposed on a side of the total reflection mirror facing the semi-reflection element, or away from the semi-reflection element, or within the total reflection mirror.

15. The electronic device according to claim 11, wherein The actuating module includes a bridging member and a driving member. The driving member is connected to the total reflection component. The bridging member is movably disposed on one side surface of the housing member. The bridging member is adapted to be pushed by the operating member to drive the driving member to cause the total reflection component to perform the actuation.

16. The electronic device according to claim 15, wherein The bridging member is spaced from the operating member or integrally formed with the bridging member.

17. The electronic device according to claim 15, wherein The bridging member is provided with a rack structure. The driving member includes a gear, a cam, and a connecting shaft. The gear and the cam are respectively disposed at two opposite ends of the connecting shaft. The cam abuts against the total reflection component, and the gear is adapted to mesh with the rack structure.

18. The electronic device according to claim 17, wherein The driving member further includes a torsion spring disposed on the connecting shaft and adapted to provide an elastic restoring force to drive the cam to pull the total reflection component to perform the actuation.

19. The electronic device according to claim 15, wherein, The bridging member is a plate body, and the driving member is a compression spring disposed on a surface of the total reflection component away from the semi-reflection element. The plate body is adapted to push the total reflection component to cause the compression spring to accumulate an elastic restoring force.

20. The electronic device according to claim 11, wherein The key mechanism further includes a reset element disposed between the operating member and the housing member.

21. The electronic device according to claim 15, wherein, The housing member is provided with an electronic switch. The bridging member is adapted to be driven by the operating member to trigger the electronic switch, so that a light-emitting element of the total reflection component emits a light source.

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