TWI554869B - Signal input device - Google Patents

Description

Signal input device

The present invention relates to a signal input device, and more particularly to a signal input device formed with a chamber.

As electronic devices gradually move toward the design concept of "light, thin, short, and small", the size of electronic components inside them tends to be miniaturized. However, as the volume of electronic components tends to be miniaturized, the density per unit area increases, so the amount of heat generated by the related electronic components also increases. Excessive temperature will seriously affect the stability and efficiency of the operation of electronic devices, and shorten the life of electronic components. Therefore, how to effectively dissipate heat has become a major focus in the design of electronic devices.

In the prior art, since the input device is also miniaturized with the electronic device, the amount of heat generated inside it also increases. However, conventional input devices often do not have a good heat dissipation design. When the user uses the input device, the heat inside the input device is directly transmitted to the keyboard, resulting in an increase in keyboard temperature. After a long period of use, the surface of the keyboard is overheated, which in turn affects the comfort of the user.

As mentioned above, the importance of how to improve the heat dissipation efficiency of the input device and at the same time avoiding the conduction of heat to the surface and causing the surface of the input device to overheat and affect the comfort of use can be seen.

In view of this, the present invention provides a signal input device for simultaneously dissipating heat. Heat can be prevented from being conducted to the surface of the signal input device.

A signal input device disclosed in the present invention comprises a casing, an input body and a support member. The outer casing has at least one vent hole and is formed with an accommodating space. The heat source is located in the accommodating space. The support supports the input body. Wherein, the support member is formed with a chamber having a first opening and a second opening. The first opening and the second opening are in communication with the outside air.

Since the signal input device disclosed in the present invention includes a support member, and the support member is formed with a chamber to allow heat to be discharged from the vent hole. In addition, the signal input device disclosed in the present invention may further include a fan and an air outlet, and the fan may drive an air flow from the vent hole into the chamber and be discharged from the air outlet. Based on this, heat can be prevented from being conducted to the input body.

The above description of the present invention and the following description of the embodiments are intended to illustrate and explain the principles of the invention, and to provide a further explanation of the scope of the invention.

1, 2‧‧‧ signal input device

10, 20‧‧‧ shell

101, 201‧‧‧ vents

102, 202‧‧‧ accommodating space

103, 203‧‧‧ bottom plate

104, 204‧‧‧ side panels

105, 205‧‧‧ extension board

11, 21‧‧‧ heat source

12, 22‧‧‧ carrying board

121, 221‧‧‧ grooves

13, 23‧‧‧ Input ontology

14, 24, 34‧‧‧ Supports

141, 241‧‧‧ first surface

1411, 2411, 3411‧‧‧ first convex

1412, 2412, 3412‧‧‧ first recess

142, 242, 342‧‧‧ second surface

1421, 2421, 3421‧‧‧ second convex

1422, 2422, 3422‧‧‧ second recess

143‧‧ ‧ chamber

1431, 2441‧‧‧ first opening

206‧‧‧air outlet

243, 343‧‧‧ second opening

244, 344‧‧ ‧ chamber

25‧‧‧Fan

H1‧‧‧First hot air flow

H2‧‧‧second hot air flow

C‧‧‧Cold airflow

W‧‧‧ mixed airflow

L‧‧‧ length

I‧‧‧Width

1 is a perspective view of a signal input device according to a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view along the cut line AA' according to Fig. 1.

Figure 3 is a schematic diagram of heat dissipation of a signal input device according to a first embodiment of the present invention.

Figure 4 is a cross-sectional view showing a signal input device according to a second embodiment of the present invention.

Figure 5 is a schematic diagram of heat dissipation of a signal input device according to a second embodiment of the present invention.

Figure 6 is a top plan view of a support member in accordance with a third embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view taken along line BB' of Fig. 6.

It should be noted that the descriptive terminology of the orientation in this specification (eg, "upper", "Bottom", "outside", "inside", etc.) are merely examples of terms or relatencies. They should be conceptually adjusted depending on the user or based on the difference in usage. It is not enumerated or absolute. Sexual terms, first explained.

Please refer to Figure 1 and Figure 2. 1 is a perspective view of a signal input device according to a first embodiment of the present invention. Fig. 2 is a schematic cross-sectional view showing the face line AA' according to Fig. 1. As shown in the figure, in the present embodiment, the signal input device 1 of the present invention is disposed in an external space and includes a casing 10, a heat source 11, a carrier plate 12, an input body 13, and a support member 14.

The outer casing 10 has at least one vent hole 101, and an accommodating space 102 is formed inside the outer casing 10. The at least one vent hole 101 and the accommodating space 102 are in communication with each other. In the embodiment, the outer casing 10 includes a bottom plate 103, a side plate 104 and an extension plate 105. Further, the number of at least one vent hole 101 is two. However, the present invention does not limit the number of vent holes 101.

In detail, the bottom plate 103 of the outer casing 10 and the side plate 104 are connected to each other, and the bottom plate 103 and the side plate 104 together surround the accommodating space 102. The extension plate 105 of the outer casing 10 is connected to the side plate 104 and covers a portion of the accommodation space 102. Furthermore, the material of the outer casing 10 is plastic. In addition, the two vent holes 101 are penetrated through the extension plate 105 of the outer casing 10 to allow the external space and the accommodating space 102 to communicate with each other.

The heat source 11 is located in the accommodating space 102 and generates heat when the signal input device 1 operates. In this embodiment, the heat source 11 is a circuit board provided with a central processing unit (CPU). In practical applications, those who generate heat when the signal input device 1 operates are in the scope of the heat source 11 of the present invention, and those skilled in the art should be able to understand. Therefore, the present invention relates to the type of heat source 11 and the principle of heat generation, and will not be described again.

The carrier plate 12 is mounted on the outer casing 10 and covers the accommodation space 102. In this embodiment, The carrier plate 12 has a recess 121 and is mounted on the extension plate 105 of the outer casing 10. In addition, in the embodiment, the material of the carrier plate 12 is the same as that of the extension plate 105, and both of them are plastic. However, the material of the carrier 12 is not limited to plastic. For example, the material of the carrier 12 may be metal (eg, iron) to enhance the bearing strength of the carrier 12 .

The input body 13 is stacked on the carrier board 12. In this embodiment, the input body 13 is disposed on the recess 121 of the carrying board 12 and protrudes upward from the carrying board 12 for the user to input at least one electronic signal. In addition, the vent holes 101 mentioned above are respectively located on opposite sides of the input body 13. However, the two vent holes 101 are not limited to the opposite sides of the input body 13. For example, the two vent holes 101 may also be located on the same side of the input body 13. Therefore, the present invention is not limited thereto as to the relative position between each of the vent holes 101 and the input body 13.

The support member 14 is located between the carrier plate 12 and the bottom plate 103. That is to say, the carrier 12 is mounted between the support member 14 and the input body 13. The support member 14 has a first surface 141 and a second surface 142 opposite to each other and is formed with a chamber 143. The first surface 141 faces the bottom plate 103 of the housing 10 and includes a first protrusion 1411 and a first recess 1412. The second surface 142 faces away from the first surface 141 and includes a second protrusion 1421 and a second recess 1422. The first recess 1412 is parallel to the second protrusion 1422. In addition, the formation of the first convex portion 1411, the first concave portion 1412, the second convex portion 1421 and a second concave portion 1422 can strengthen the structural strength of the support member 34. The chamber 143 has two first openings 1431, and the two first openings 1431 communicate with the two vents 101 and communicate with the outside air. Further, in the present embodiment, the material of the support member 14 is metal.

Up to this point, the above content is an introduction to each component in the signal input device 1 of the present invention. For the heat dissipation method of the signal input device 1, refer to the following, and see Figure 3. FIG. 3 is a schematic diagram of heat dissipation of the signal input device according to the first embodiment of the present invention.

As shown in FIG. 3, when the user uses the signal input device 1, the heat source 11 generates heat and generates at least one first hot gas flow H1. At least one first hot gas stream H1 rises and is in thermal contact with the first surface 141 of the support member 14.

When the at least one first hot air flow H1 is in thermal contact with the first surface 141 of the support member 14, since the material of the support member 14 in the embodiment is metal, the support member 14 will heat the at least one first hot air flow H1. The first surface 141 is conducted to the chamber 143, and then at least a second hot gas stream H2 is generated in the chamber 143.

Since the chamber 143 is filled with air, the air is a good thermal insulator. In addition, the chamber 143 communicates with the external space through the two first openings 1431 and the two vent holes 101, and at least one second hot gas flow H2 will convect toward the first openings 1431 and the vent holes 101.

Finally, at least one second hot gas stream H2 passes through each of the vent holes 101 and convects to the external space to eliminate the heat in the signal input device 1 (the heat generated by the heat source 11), thereby achieving the effect of isolating the heat source 11 and the input body 13. And produce the effect of heat dissipation.

See Figure 4. Figure 4 is a cross-sectional view showing a signal input device according to a second embodiment of the present invention. As shown in the figure, in the present embodiment, the signal input device 2 of the present invention is disposed in an external space, and includes a casing 20, a heat source 21, a carrier plate 22, an input body 23, a support member 24, and a Fan 25.

The outer casing 20 has at least one vent hole 201 and an air outlet 206, and an accommodating space 202 is formed inside the outer casing 20. In the embodiment, the outer casing 20 includes a bottom plate 203, a side plate 204, and an extension plate 205. In addition, in the embodiment, the number of the at least one vent hole 201 is two.

The bottom plate 203 of the outer casing 20 and the side plate 204 are connected to each other, and the bottom plate 203 and the side plate 204 together surround the accommodating space 202. The extension plate 205 of the outer casing 20 is connected to the side plate 204 and covered Part of the accommodation space 202. The material of the extension plate 205 is plastic. In addition, the two vents 201 are located in the extension plate 205 of the outer casing 20 and extend through the extension plate 205. The air outlet 206 is located at the side plate 204 of the outer casing 20 and penetrates the side plate 204. Therefore, both the vent hole 201 and the air outlet 206 allow the external space and the accommodating space 202 to communicate with each other.

The heat source 21 is located in the accommodating space 202 and generates heat when the signal input device 2 operates. In this embodiment, the heat source 21 is also a central processing unit.

The carrier plate 22 is mounted on the outer casing 20 and covers the accommodation space 202. In this embodiment, the carrier plate 22 has a recess 221 and is mounted on the extension plate 205 of the outer casing 20. In addition, in the embodiment, the material of the carrier plate 22 is the same as that of the outer casing 20, and both of them are plastic.

The input body 23 is stacked on the carrier plate 22. In this embodiment, the input body 23 is disposed on the recess 221 of the carrying board 22 and protrudes upward from the carrying board 22 for the user to input at least one electronic signal. In addition, the vent holes 201 mentioned above are respectively located on opposite sides of the input body 23.

The support member 24 has a first surface 241, a second surface 242, and a second opening 243. The first surface 241 faces the bottom plate 203 of the housing 20 and the second surface 242 faces away from the first surface 241. The second opening 243 extends through the support member 24.

The support member 24 is located between the carrier plate 22 and the bottom plate 203. That is to say, the carrier 22 is mounted between the support member 24 and the input body 23. The support member 24 has a first surface 241 and a second surface 242 opposite to each other and is formed with a chamber 244. In this embodiment, the first surface 241 faces the bottom plate 203 of the housing 20 and includes a first protrusion 2411 and a first recess 2412. The second surface 242 faces away from the first surface 241 and includes a second protrusion 2421 and a second recess 2422. The first recess 2412 is parallel to the second protrusion 2422. The chamber 244 has two first openings 2431 and a second opening 243. The two first openings 2431 are in communication with the second vents 201 and are in communication with the outside air. In addition, The material of the support member 24 is also metal.

The fan 25 is disposed in the accommodating space 202 and located between the bottom plate 203 of the outer casing 20 and the support member 24. In this embodiment, the support member 24 is attached to the fan 25, and the second opening 243 is connected to the air inlet of the fan 25. In addition, the position of the fan 25 also corresponds to the air outlet 206 of the outer casing 20. In the present embodiment, the fan 25 is an air suction fan to drive the airflow from the vent hole 201 into the chamber 244 and from the air outlet 206 (see FIG. 5 for details).

Up to this point, the above content is an introduction to each component in the signal input device 2 of the present invention. For the heat dissipation method of the signal input device 2, please refer to the following, and see Figure 5. 5 is a schematic diagram of heat dissipation of a signal input device according to a second embodiment of the present invention.

As shown in FIG. 5, when the user uses the signal input device 2, the heat source 21 generates heat and generates at least a first hot gas flow H1. At least one first hot gas stream H1 rises and is in thermal contact with the first surface 241 of the support member 24.

When the at least one first hot air flow H1 is in thermal contact with the first surface 241, since the material of the support member 24 is metal in the embodiment, the support member 24 will heat the at least one first hot air flow H1 from the first surface 241. Conducted to chamber 244, and then at least a second stream of hot gas H2 is produced in chamber 244.

At the same time, the fan 25 can drive at least one cold airflow C in the outer space, enter the chamber 244 from the second vent 201, and flow toward the second opening 243. Since the temperature of the external space is lower than the temperature in the accommodating space 202, when at least one cold airflow C enters the chamber 244, the temperature of the signal input device 2 can be simultaneously lowered. In addition, the fan 25 can also drive at least one second hot gas stream H2 in the chamber 244 to flow toward the second opening 243.

Finally, at least one mixed gas stream W (including at least one second hot gas stream H2 and One less cold airflow C) passes through the second opening 243 and is discharged from the air outlet 206 to achieve the effect of heat dissipation.

See Figure 6 and Figure 7. Figure 6 is a top plan view of a support member in accordance with a third embodiment of the present invention. Fig. 7 is a schematic cross-sectional view taken along line BB' of Fig. 6.

Different from the second embodiment, the first convex portion 3411, the first concave portion 3412, the second convex portion 3421 and the second concave portion 3422 of the support member 34 of the embodiment are arranged radially. In this way, in addition to strengthening the structural strength of the support member 34, the effect of the air flow guide groove can also be achieved. In this embodiment, the cross-section of the first convex portion 3411 and the second convex portion 3421 is a rectangle, the length L is between 2 mm and 5 mm, and the width I is between 0.3 mm and 0.5 mm. However, regarding the arrangement and shape of the first convex portion 3411, the first concave portion 3412, the second convex portion 3421, and the second concave portion 3422, the user can make various adjustments and improvements according to the needs thereof, and the present invention is not limited thereto.

When the fan (not shown) operates, at least one airflow F in the chamber 344 can flow along the first convex portion 3411, the first concave portion 3412, the second convex portion 3421, and the second concave portion 3422 to the second opening. Hole 343 is used to facilitate the subsequent generation of heat generated by a heat source (not shown).

In this embodiment, except for the arrangement of the first convex portion 3411, the first concave portion 3412, the second convex portion 3421, and the second concave portion 3422, other unmentioned portions are similar to the second embodiment (see also Figures 4 to 5 and the previous section), so I will not repeat them here.

In summary, in the prior art, since the input device is also miniaturized with the electronic device, the heat generated inside thereof is also increased. However, conventional input devices often do not have a good heat dissipation design. When the user uses the input device, the heat inside the input device is directly transmitted to the keyboard, resulting in an increase in keyboard temperature. After a long period of use, the surface of the keyboard is overheated, which in turn affects the comfort of the user. In contrast, the signal input device disclosed in the present invention includes a support member, and the support member is formed with a chamber to allow heat to be discharged from the vent hole. In addition, the signal transmission disclosed in the present invention The inlet device may further comprise a fan and an air outlet, the fan driving an air flow from the vent hole into the chamber and discharging from the air outlet. Based on this, heat can also be prevented from being conducted to the input body.

Although the embodiments of the present invention are disclosed above, it is not intended to limit the present invention, and those skilled in the art, regardless of the spirit and scope of the present invention, the shapes, configurations, and features described in the scope of the present application. And the number of modifications may be made, and the scope of patent protection of the present invention shall be determined by the scope of the patent application attached to the specification.

2‧‧‧Signal input device

20‧‧‧ Shell

201‧‧‧Ventinel

202‧‧‧ accommodating space

203‧‧‧floor

204‧‧‧ side panels

205‧‧‧ Extension board

206‧‧‧air outlet

21‧‧‧heat source

22‧‧‧Loading board

221‧‧‧ Groove

23‧‧‧ Input ontology

24‧‧‧Support

241‧‧‧ first surface

2411‧‧‧First convex

2412‧‧‧First recess

242‧‧‧ second surface

2421‧‧‧second convex

2422‧‧‧Second recess

243‧‧‧Second opening

244‧‧‧ chamber

25‧‧‧Fan

Claims (8)

A signal input device comprises: a casing having at least one venting hole, the casing comprising a bottom plate, a side plate and an extension plate, the bottom plate and the side plate are connected to each other, and together with the side plate, surround an accommodating space, the extension The board is connected to the side panel; an input body; a support member for supporting the input body; and a carrier plate disposed between the support member and the input body, wherein the carrier board is mounted on the extension board; The support member is formed with a chamber having a first opening and a second opening, the first opening being in gas communication with the outside. The signal input device of claim 1, wherein the first opening communicates with the at least one vent. The signal input device of claim 1 further includes a fan disposed in the accommodating space. The signal input device of claim 3, the support member is attached to the fan, and the second opening communicates with the air inlet of the fan. The signal input device of claim 1, wherein the at least one vent hole extends through the extension plate and is located on one side of the input body. The signal input device of claim 1, wherein the outer casing further has an air outlet at the side plate, and the air outlet communicates with the accommodating space. The signal input device of claim 5, wherein the support member has a first surface and a second surface, the first surface includes a first protrusion and a first recess, and the second surface includes a second a convex portion and a second concave portion, the first convex portion being parallel to the second concave portion, the first concave portion being parallel to the second convex portion. The signal input device of claim 1, wherein the number of the at least one vent holes is two and located on opposite sides of the input body.