Light guide column capable of uniformly guiding light, key structure and display screen

Abstract

The embodiment of the utility model relates to a light guide column with uniform light guide, a key structure and a display screen. According to the light guide column capable of guiding light uniformly, the light guide column is hollow, and the first containing cavity and the second containing cavity which are communicated with each other are formed in the light guide column; the inner diameter of the first containing cavity is larger than that of the second containing cavity, the light guide column forms a light receiving face at the joint of the first containing cavity and the second containing cavity, and a plurality of fillets are arranged on the light receiving face. And the plurality of fillets are radially arranged on the light receiving surface around the central axis of the second accommodating cavity. According to the light guide column capable of uniformly guiding the light, the plurality of fillets are designed on the light receiving surface, so that the area of the light receiving surface is increased, when the light guide column receives the light emitted by a light source, the light receiving at multiple angles is realized, the uniformity of the received light is improved, and the light display effect after the light guide column guides the light is uniform.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of buttons, and in particular to a light-guiding column with uniform light guidance, a button structure and a display screen. Background Art

[0002] In the related art of key structure, the LED light source is guided by the light guide column to illuminate the surrounding environment of the key for easy use. However, the design of the light guide column in the related art has the problem of uniform light guide part. When the light emitted by the LED light source passes through the light guide, due to the influence of the position, part of the introduced light is more concentrated, especially the part close to the LED light source is brighter than the part far from the LED light source, resulting in some areas of the light guide column being brighter and some areas being darker when outputting, resulting in uneven light display effect. Utility Model Content

[0003] Based on this, the purpose of the embodiments of the utility model is to provide a light guide column and a key structure with uniform light guidance, which receives light through a design of multiple ribs, so that when the light guide column and the key structure are finally displayed, the light uniformity of the luminous area is improved.

[0004] A light guide column with uniform light guidance, the light guide column is hollow, and is provided with a first accommodating cavity and a second accommodating cavity which are interconnected; the inner diameter of the first accommodating cavity is larger than the inner diameter of the second accommodating cavity, the light guide column forms a light receiving surface at the connection between the first accommodating cavity and the second accommodating cavity, the light receiving surface is provided with a plurality of ribs, and the plurality of ribs are radially arranged on the light receiving surface around the central axis of the second accommodating cavity.

[0005] The light-guiding column with uniform light guidance described in the embodiment of the utility model is designed with a plurality of ribs on the light receiving surface, so that the area of ​​the light receiving surface is increased. When the light-guiding column receives light emitted by the light source, the light irradiated on the light receiving surface is reflected and refracted by the ribs, making the light more uniform, increasing the utilization rate of light, realizing light reception at multiple angles, and improving the uniformity of the received light, thereby making the light display effect uniform after the light-guiding column guides light.

[0006] As a preferred solution of the embodiment of the utility model, the light guide column includes a first column and a second column connected to each other; the first column is hollow and has the first accommodating cavity; the second column is hollow and has the second accommodating cavity; the inner side of the connection between the first column and the second column forms the light receiving surface. The first column and the second column are connected, and since the inner diameter of the first accommodating cavity is larger than the inner diameter of the second accommodating cavity, the inner side of the connection between the first column and the second column forms the light receiving surface.

[0007] As a preferred solution of the embodiment of the utility model, the outer diameter of the first column is larger than the outer diameter of the second column; the light guide column is provided with a reinforcement structure on the outer side of the connection between the first column and the second column. The first column and the second column form a hollow "convex" shaped structure; by providing a reinforcement structure on the outer side of the connection between the first column and the second column, the structural mechanical properties of the light guide column are improved by the reinforcement structure.

[0008] As a preferred solution of the embodiment of the utility model, the first column is provided with a positioning connection portion. By designing the positioning connection portion on the first column, the light guide column is installed on a related component (such as a PCB board) through the positioning connection portion, so that the light guide column can stably set the light source cover in the first accommodating cavity and below the light receiving surface.

[0009] As a preferred solution of the embodiment of the utility model, the positioning connection part includes a positioning column, and / or a threaded connection part, and / or a buckle part arranged on the first column. The positioning column, the threaded connection part, the buckle part and other structures are designed to facilitate the installation of the light guide column on related components (such as a PCB board).

[0010] An embodiment of the utility model further provides a key structure, comprising any of the above-mentioned light-guiding uniform light-guiding light columns.

[0011] As a preferred solution of an embodiment of the utility model, the key structure also includes a PCB board, a light source, an encoder, an encoder connecting rod, and a knob; the light source, the encoder, and the light guide column are respectively arranged on the PCB board; wherein the light guide column surrounds the light source and the encoder; the lower part of the encoder is located in the first accommodating cavity, and the upper part of the encoder penetrates into the second accommodating cavity; the light source is located in the first accommodating cavity and below the light receiving surface; one end of the encoder connecting rod is rotatably arranged at the top end of the encoder; an elastic reset mechanism is arranged in the encoder to enable the encoder connecting rod to reset and rebound; the other end of the encoder connecting rod extends out of the second accommodating cavity; the knob is arranged at the other end of the encoder connecting rod.

[0012] The key structure described in the embodiment of the utility model adopts any of the above-mentioned light-guiding columns, and sets the light source on the PCB board and below the light-receiving surface, so that the light emitted by the light source is irradiated on the light-receiving surface and the reflection and refraction of the ribs on the light-receiving surface can realize the reception of light at multiple angles, improve the uniformity of the received light, so that the light-guiding column guides light uniformly, thereby improving the uniformity of the light emission of the key structure. By rotatably fixing the encoder connecting rod on the top of the encoder, the encoder connecting rod can be driven by turning the knob to realize the rotation function; by setting an elastic reset mechanism in the encoder so that the encoder connecting rod can reset and rebound, the pressing function can be realized by pressing the knob. Therefore, through the above-mentioned design, the key structure described in the embodiment of the utility model can realize both the pressing and knob functions.

[0013] As a preferred solution of the embodiment of the utility model, the bottom of the knob is provided with a downward protrusion, and the protrusion is provided with an upward recessed engaging groove; the other end of the encoder connecting rod is inserted into the engaging groove and fixedly connected with the knob.

[0014] As a preferred solution of the embodiment of the utility model, a limiting portion protruding inward is provided in the middle of the side wall of the second accommodating cavity; the other end of the encoder connecting rod is inserted through the limiting portion and extends out of the second accommodating cavity; the outer diameter of the protrusion of the knob is smaller than the inner diameter of the second accommodating cavity; after the other end of the encoder connecting rod is inserted into the snap-fit ​​groove and fixedly connected with the knob, the lower part of the protrusion is located between the inner wall of the second accommodating cavity and the outer wall of the encoder connecting rod, and is located above the limiting portion. By designing the limiting portion in the middle of the side wall of the second accommodating cavity, when the knob is pressed, the protrusion of the knob can be brought into contact with the limiting portion after synchronously descending, thereby limiting the pressing amplitude.

[0015] A display screen, characterized in that it comprises any of the key structures described above. A display screen using the key structure described above can have a better key display effect in a darker environment.

[0016] The embodiments of the present utility model have the following technical effects:

[0017] The light guide column of the embodiment of the utility model can improve the uniformity of the introduced light through structural design, wherein, by designing multiple ribs on the light receiving surface to increase the light receiving area, it is possible to receive light at multiple angles, thereby improving the uniformity of the introduced light. In the key structure of the embodiment of the utility model, when the light guide column receives light emitted by the light source, the light is received at multiple angles by the ribs, and when the light is finally displayed, the uniformity of the light in the luminous area is improved. The display screen using the above-mentioned key structure can have a better key display effect in a darker environment.

[0018] For better understanding and implementation, the embodiments of the utility model are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the key structure of the utility model;

[0020] Figure 2 A half-section diagram of the key structure of the utility model;

[0021] Figure 3 This is a front view of the light guide column of the utility model;

[0022] Figure 4 It is a side view of the light guide column of the utility model;

[0023] Figure 5 It is a top view of the light guide column of the utility model;

[0024] Figure 6 A bottom view of the light guide column of the utility model;

[0025] Figure 7 It is a half-section schematic diagram of the light guide column of the utility model;

[0026] Figure 8 This is a schematic diagram of the bottom structure of the light guide column of the utility model;

[0027] Fig. 9 for Figure 8 Half-section of

[0028] Fig.10 It is a partial structural cross-sectional view of the display screen of the present utility model. DETAILED DESCRIPTION

[0029] In the description of the embodiments of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0030] In addition, the terms first, second, third, etc. in the specification and claims are only used for the purpose of describing the same technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor necessarily describing the order or time sequence. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0031] Similarly, the term "connection" is also used in the specification and claims, which should not be interpreted as limited to direct connection. Therefore, the expression "device A is connected to device B" should not be limited to the device A being directly connected to device B in the device or system, which means that there is a path between device A and device B, which may be a path including other devices or tools.

[0032] The embodiment of the utility model takes into account that the traditional light guide column design may have uneven light introduction when guiding light. When the light emitted by the LED light source passes through the light guide, due to the influence of the position, part of the introduced light is more concentrated, especially the part close to the LED light source is brighter than the part far from the LED light source, resulting in some areas of the light guide column being brighter and some areas being darker when outputting, resulting in uneven lighting display effect.

[0033] Therefore, the present invention provides a light guide column 1 with uniform light guide. Figure 3-Figure 8 The light guide column 1 is hollow, and is provided with a first accommodating cavity 110 and a second accommodating cavity 120 which are interconnected; the inner diameter of the first accommodating cavity 110 is larger than the inner diameter of the second accommodating cavity 120, and the light guide column 1 is formed with a light receiving surface 13 at the connection between the first accommodating cavity 110 and the second accommodating cavity 120, and a plurality of ribs 14 are provided on the light receiving surface 13, and the plurality of ribs 14 are radially arranged around the central axis of the second accommodating cavity 120 on the light receiving surface 13.

[0034] The light-guiding column of the embodiment of the utility model has uniform light guidance, and a plurality of ribs 14 are designed on the light receiving surface 13, so that the area of ​​the light receiving surface is increased. When the light-guiding column 1 receives light emitted by the light source, the light irradiated on the light receiving surface 13 is reflected and refracted by the ribs 14, so that the light can be received at multiple angles, thereby improving the uniformity of the received light, thereby making the light-guiding column 1 uniform, and making the final lighting display effect uniform.

[0035] In the embodiment of the present utility model, please refer to Figure 3-Figure 8, the light guide column 1 includes a first column 11 and a second column 12 connected to each other; the first column 11 is hollow and has a first accommodating cavity 110; the second column 12 is hollow and has a second accommodating cavity 120; the inner side of the connection between the first column 11 and the second column 12 forms a light receiving surface 13. In the embodiment of the utility model, the outer diameter of the first column 110 is larger than the outer diameter of the second column; the first column 11 and the second column 12 form a hollow (through) "convex" shaped structure; the inner diameter of the first accommodating cavity 110 is larger than the inner diameter of the second accommodating cavity 120, and the second accommodating cavity 120 and the first accommodating cavity 110 have the same central axis; the first column 11 is a square column, the second cavity 12 is a cylindrical shape, the connection between the first column 11 and the second column 12 is a horizontal connection structure, the inner side of the horizontal connection structure is a horizontal plane, that is, the light receiving surface 13 is a horizontal plane, and a plurality of ribs 14 are arranged on the horizontal plane 13. In the embodiment of the utility model, a reinforcement structure 15 is provided on the outer side of the connection between the first column 11 and the second column 12; the structural mechanical properties of the light guide column 1 are improved by the reinforcement structure 15. In other embodiments of the utility model, the shapes of the first column 11 and the second cavity 12 can also be selected according to actual conditions.

[0036] In the embodiment of the present utility model, please refer to Figure 3-Figure 8 The ribs 14 are radially arranged around the central axis of the first accommodating cavity 110 on the light receiving surface 13. The angle between one side of the rib 14 at one end of the light receiving surface 13 close to the central axis and the side of the adjacent rib 14 is 54°, and the angle between the two side edges of the adjacent ribs 14 gradually increases from the inside to the outside on the light receiving surface 13 to improve the effects of light reception, refraction and reflection and enhance the uniformity of light introduction.

[0037] The utility model also provides a key structure. Figure 1-Figure 2 and Fig.10 , the key structure includes the above-mentioned light guide column 11. Since the key structure of the embodiment of the utility model includes the above-mentioned light guide column 11, it also has the advantage of uniform light-emitting display effect.

[0038] In the embodiment of the present utility model, please refer to Figure 1-Figure 2 and Fig.10The key structure also includes a PCB board 2, a light source 3, an encoder 4, an encoder connecting rod 5, and a knob 6; the light source 3, the encoder 4, and the light guide column 1 (part of the first column 11) are respectively arranged on the PCB board 2; wherein the light guide column 1 surrounds the light source 3 and the encoder 4; the lower part of the encoder 4 is located in the first accommodating cavity 110, and the upper part of the encoder 4 penetrates into the second accommodating cavity 120; the light source is located in the first accommodating cavity 110 and is located below the light receiving surface 13; one end of the encoder connecting rod 5 is rotatably arranged at the top end of the encoder 4; an elastic reset mechanism (not shown) is arranged in the encoder 4 to enable the encoder connecting rod 5 to reset and rebound; the other end of the encoder connecting rod extends out of the second accommodating cavity; the knob 6 is arranged at the other end of the encoder connecting rod 5. The key structure of the embodiment of the utility model adopts the above-mentioned light guide column 1, and sets the light source on the PCB board 2 and below the light receiving surface 13, so that the light emitted by the light source 3 is irradiated on the light receiving surface 13 and the effect of the ribs on the light receiving surface can realize the reception of light at multiple angles, improve the uniformity of the received light, so that the light guide column 1 guides the light uniformly, thereby improving the uniformity of the light emission of the key structure. By rotatably fixing the encoder connecting rod 4 on the top of the encoder 5, the encoder connecting rod 5 can be driven by turning the knob 6 to realize the rotation function; by setting an elastic reset mechanism in the encoder 4, the encoder connecting rod 5 can be reset and rebounded, and the pressing function can be realized by pressing the knob 5. Therefore, through the above-mentioned design, the key structure of the embodiment of the utility model can realize both the pressing and knob functions.

[0039] In the embodiment of the utility model, the light source 3 is an LED light source, which is generated by the light emission of LED lamp beads. The PCB board is provided with an LED lamp bead groove, and the LED lamp bead is fixedly arranged in the LED lamp bead groove and electrically connected to the PCB board to form an LED light source. The light source 3 is located beside the encoder 4, so that after the light guide column 1 covers or surrounds the light source 3 and the encoder 4, the light source 3 can be in the first accommodating cavity and located below the light receiving surface 13, so that the light generated by it is irradiated on the light receiving surface 13.

[0040] In the embodiment of the present utility model, please refer to Figure 3-Figure 8In order to facilitate the installation of the light guide column 1 on the PCB board, the first column 11 is provided with a positioning connection part, which includes a positioning column 111 fixedly arranged on the inner side of the side wall of the first column 11, the positioning column 111 protrudes from the bottom of the side wall of the first column 11, and a corresponding positioning groove or positioning hole (not shown) is arranged on the PCB board 2, so that the light guide column 1 can be positioned on the PCB board 2 through the positioning column 111. In the embodiment of the utility model, the positioning connection part also includes a threaded connection part 112 arranged on the first column 11, and a screw hole 113 is arranged on the threaded connection part, and a corresponding screw hole (not shown) is arranged on the PCB board 2, so that the first column 11 is installed on the PCB board 2 by passing a bolt through the screw hole 113. In the embodiment of the utility model, the positioning connection part also includes a buckle part 114 arranged on the outer side of the side wall of the first column 11, and the buckle part is a snap, and the first column 11 can be positioned on the side plate (not shown) of the PCB board through the snap. Therefore, the light guide column 1 of the embodiment of the utility model can be installed on the relevant components by selecting positioning connection parts of different structures according to actual conditions. For example, through the design of structures such as the positioning column 111, and / or the threaded connection part 112, and / or the snap-fit ​​part 114, it is convenient to install the light guide column 1 on the relevant components, so that the light guide column 1 can stably cover the light source 3 in the first accommodating cavity 110 and be located below the light receiving surface 13.

[0041] In the embodiment of the present utility model, please refer to Figure 2 , a downward protrusion 61 is provided at the bottom of the knob 6, and an upward recessed snap-fitting groove is provided at the bottom of the protrusion 61; the other end of the encoder connecting rod 5 is inserted into the snap-fitting groove 611 and fixedly connected with the knob 6. The second column 12 is provided with an inwardly protruding limiting portion 121 at the middle of the side wall of the second accommodating cavity 120, and the encoder connecting rod 5 can pass through the limiting portion 121 and there is a gap between the limiting portion 121. The outer diameter of the protrusion 61 of the knob 6 is smaller than the inner diameter of the second accommodating cavity 120; after the other end of the encoder connecting rod 5 is inserted into the snap-fitting groove and fixedly connected with the knob 6, the lower part of the protrusion 61 is located in the second accommodating cavity 120 (that is, between the outer side wall of the encoder connecting rod 5 and the inner side wall of the second accommodating cavity 120), and is located above the limiting portion 120. When the knob 6 is pressed, the protrusion 61 of the knob 6 can abut against the limiting portion to limit the pressing amplitude.

[0042] In the embodiment of the utility model, the knob 6 is made of a light-guiding material, and a knob cap 62 is provided on the top of the knob 6. The knob cap 62 is light-transmissive and provided with characters. After the light generated by the light source is transmitted and emitted through the light guide column 1, it can also emit light through the knob 6 and the knob cap 62, so that the characters on the knob cap 62 can be clearly seen. In the embodiment of the utility model, a decorative ring 63 is also installed on the top of the knob 6. The decorative ring 63 is arranged on the periphery of the knob cap 62 and riveted to the top of the knob; the decorative ring does not guide light, and the decorative ring 63 increases the decorative sense of the knob 6 and can block light, thereby improving the display brightness of the knob cap 62 area.

[0043] The embodiment of the utility model also provides a display screen 200, which is equipped with the above-mentioned key structure. When the light generated by the light source 2 is transmitted through the ribs 14 on the light guide column 1, the light guide uniformity is improved, so that the light guide column 1 emits uniform light. In addition, the light emitted by the light guide column 1 can also be transmitted to the knob 6, so that the surface area of ​​the knob cap 62 can display light, so that the user can use the key structure to perform corresponding operations.

[0044] The above-mentioned embodiments only express several implementation methods of the utility model embodiments, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model embodiments, and the utility model embodiments are also intended to include these modifications and modifications.

Claims

1. A light guide column with uniform light guiding, characterized in that: The light guide column is hollow, and is provided with a first accommodating cavity and a second accommodating cavity which are interconnected; the inner diameter of the first accommodating cavity is larger than the inner diameter of the second accommodating cavity, and the light guide column forms a light receiving surface at the connection between the first accommodating cavity and the second accommodating cavity, and a plurality of ribs are provided on the light receiving surface, and the plurality of ribs are radially arranged around the central axis of the second accommodating cavity on the light receiving surface.

2. The light-guiding column with uniform light guiding according to claim 1, characterized in that: The light guide column includes a first column and a second column connected to each other; the first column is hollow and has the first accommodating cavity; the second column is hollow and has the second accommodating cavity; the inner side of the connection between the first column and the second column forms the light receiving surface.

3. The light-guiding column with uniform light guiding according to claim 2, characterized in that: The outer diameter of the first column is larger than the outer diameter of the second column; the light guide column is provided with a reinforcement structure on the outer side of the connection between the first column and the second column.

4. The light-guiding column with uniform light guiding according to claim 2, characterized in that: The first column is provided with a positioning connection portion.

5. The light-guiding column with uniform light guiding according to claim 4, characterized in that: The positioning connection portion includes a positioning column arranged on the first column, and / or a threaded connection portion, and / or a buckling portion.

6. A key structure, characterized in that: A light-guiding column with uniform light guiding comprising any one of claims 1-5.

7. The key structure according to claim 6, characterized in that: The key structure also includes a PCB board, a light source, an encoder, an encoder connecting rod, and a knob; the light source, the encoder, and the light guide column are respectively arranged on the PCB board; wherein the light guide column surrounds the light source and the encoder; the lower part of the encoder is located in the first accommodating cavity, and the upper part of the encoder penetrates into the second accommodating cavity; the light source is located in the first accommodating cavity and below the light receiving surface; one end of the encoder connecting rod is rotatably arranged at the top end of the encoder; an elastic reset mechanism is arranged in the encoder to enable the encoder connecting rod to reset and rebound; the other end of the encoder connecting rod extends out of the second accommodating cavity; the knob is arranged at the other end of the encoder connecting rod.

8. The key structure according to claim 7, characterized in that: A downward protrusion is provided at the bottom of the knob, and the protrusion is provided with an upwardly recessed engaging groove; the other end of the encoder connecting rod is inserted into the engaging groove and fixedly connected with the knob.

9. The key structure according to claim 8, characterized in that: A limiting portion protruding inward is provided in the middle of the side wall of the second accommodating cavity; the other end of the encoder connecting rod is inserted through the limiting portion and extends out of the second accommodating cavity; the outer diameter of the protrusion of the knob is smaller than the inner diameter of the second accommodating cavity; after the other end of the encoder connecting rod is inserted into the engaging groove and fixedly connected with the knob, the lower part of the protrusion is located between the inner wall of the second accommodating cavity and the outer wall of the encoder connecting rod, and is located above the limiting portion.

10. A display screen, characterized in that: It comprises the key structure described in any one of claims 6-9.

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