Light guide device, docking station and vehicle

Abstract

The utility model relates to the technical field of vehicles, and discloses a light guide device, a docking station and a vehicle. The light guide device comprises a light emitting part, a first light guide part and a second light guide part. The light emitting part is an annular component and comprises an annular light emitting face, a first light receiving face and a second light receiving face, the first light receiving face and the annular light emitting face are arranged oppositely, and the second light receiving face is connected with the first light receiving face and the annular light emitting face. The first light guide part is connected with the first light receiving surface, and the first light guide part is used for guiding light received from the light source to the first light receiving surface; the second light guide part is connected with the second light receiving surface; the second light guide part is used for guiding the light received from the light source to the second light receiving surface; the light emitting part receives the light through the first light receiving surface and the second light receiving surface, and the incident angle of the light of the first light receiving surface is different from the incident angle of the light of the second light receiving surface, so that the annular light emitting surface of the light emitting part can realize uniform light emitting brightness, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a light guide device, an expansion dock and a vehicle. Background Art

[0002] With the continuous development of smart vehicles, the role of the intelligent experience of the vehicle cabin in the competitiveness of the whole vehicle is becoming increasingly prominent. For example, in order to provide passengers with a more convenient and efficient charging experience, the center console, armrest box and other locations in the cabin are generally equipped with expansion docks, which can provide passengers with multiple and various types of interfaces to meet the charging needs of passengers' electronic devices. Since the interface size of the expansion dock is usually small, it is easy for passengers to misplace the connection when using it, especially when the light in the cabin is relatively dim, this situation is more likely to occur, resulting in a decrease in the user experience. Utility Model Content

[0003] The utility model provides a light guide device, an expansion dock and a vehicle, so that the light guide device can achieve uniform light output brightness.

[0004] In a first aspect, the utility model provides a light-guiding device, which includes a light-emitting portion, a first light-guiding portion, and a second light-guiding portion. The light-emitting portion is an annular component, and the light-emitting portion includes an annular light-emitting surface and a first light-receiving surface and a second light-receiving surface. The first light-receiving surface is disposed opposite to the annular light-emitting surface, and the second light-receiving surface is disposed between the first light-receiving surface and the annular light-emitting surface, and the second light-receiving surface connects the first light-receiving surface and the annular light-emitting surface. The first light-guiding portion is connected to the first light-receiving surface, and the first light-guiding portion is used to receive light from a light source and guide the received light to the first light-receiving surface. The second light-guiding portion is connected to the second light-receiving surface, and the second light-guiding portion is used to receive light from a light source and guide the received light to the second light-receiving surface.

[0005] In the utility model, the light emitting portion receives light through the first light receiving surface and the second light receiving surface. Since the first light receiving surface and the second light receiving surface are arranged adjacent to each other, the incident angle of the light on the first light receiving surface and the incident angle of the light on the second light receiving surface are different, so that the light emitting portion can be evenly covered by the light, thereby making the annular light emitting surface of the light emitting portion achieve uniform light emitting brightness.

[0006] In some embodiments, the light emitting portion includes a first frame, a second frame, a third frame, and a fourth frame connected end to end in sequence, the first frame is arranged opposite to the third frame, and the second frame is arranged opposite to the fourth frame. The first light guide portion can be connected to the first frame, the second frame, and the third frame, and the second light guide portion can be connected to the fourth frame. In this way, the first light receiving surface receives light through the first frame, the second frame, and the third frame, and the second light receiving surface receives light through the fourth frame, so each frame of the light emitting portion has light incident thereon, which helps to make the annular light emitting surface form a uniform brightness display.

[0007] In some embodiments, the first light guide portion includes a first side wall, a second side wall and a third side wall, the first side wall is arranged opposite to the second side wall, and the third side wall connects the first side wall and the second side wall. A first light-incoming surface is provided on the side of the first side wall facing away from the third side wall, a first reflecting surface is provided on the side of the first side wall facing away from the first light-collecting surface, a first light-emitting surface is provided on the side of the first side wall facing away from the first light-collecting surface, the first reflecting surface is provided on the side of the first side wall facing away from the first light-incoming surface and the first light-emitting surface, and the first reflecting surface is used to reflect the light incident from the first light-incoming surface into the first light guide portion toward the first light-emitting surface. A second light-incoming surface is provided on the side of the second side wall facing away from the third side wall, a second reflecting surface is provided on the side of the second side wall facing away from the first light-collecting surface, a second light-emitting surface is provided on the side of the second side wall facing the first light-collecting surface, the second reflecting surface is provided on the side of the second side wall facing the first light-collecting surface, the second reflecting surface is provided on the side of the second side wall facing the first light-collecting surface, the second reflecting surface is provided on the side of the second side wall facing the second light-emitting surface, and the second reflecting surface is provided on the side of the third side wall facing the light-emitting portion, and the second light-emitting surface is provided. Through this design, the first light guiding part receives light through the first light input surface and the second light input surface on both sides, and transmits light to the first light receiving surface of the light output part through the first light output surface, the second light output surface and the third light output surface, so that the first light receiving surface forms a light receiving area that is approximately U-shaped.

[0008] In some embodiments, the angle θ1 between the first light incident surface and the first reflecting surface satisfies: 50°≤θ1≤70°, so that the first reflecting surface can efficiently reflect the light entering the first light guide portion from the first light incident surface toward the first light emitting surface, thereby improving the utilization rate of the light from the light source.

[0009] Similarly, the angle θ2 between the second light incident surface and the second reflecting surface can also satisfy: 50°≤θ2≤70°, so that the second reflecting surface can efficiently reflect the light entering the first light guide portion from the second light incident surface to the second light emitting surface, thereby improving the utilization rate of the light from the light source.

[0010] In some embodiments, the light guiding device may include a first light shading layer, which may cover the surfaces of the first light guiding portion except the first light entering surface, the second light entering surface, the first light emitting surface, the second light emitting surface, and the third light emitting surface, so as to reduce the risk of light in the first light guiding portion spreading to the outside of the first light guiding portion through other surfaces other than the light emitting surface, thereby improving the utilization rate of the light.

[0011] In some embodiments, the thickness t1 of the first light-shielding layer satisfies: 0.7 mm≤t1≤1.1 mm to ensure its light-shielding effect.

[0012] Exemplarily, the material of the first light-shielding layer may be silicone, and the color of the first light-shielding layer may be a dark color such as black, dark gray, or gray.

[0013] In some embodiments, the second light-guiding portion includes a first connecting wall and a second connecting wall, one side of the first connecting wall is connected to the second light-collecting surface, the side of the first connecting wall facing away from the second light-collecting surface is connected to the second connecting wall via a chamfered angle, the chamfered angle includes an inclined surface arranged obliquely relative to the second light-collecting surface, and the second connecting wall extends in a direction away from the annular light-emitting surface. A third light-incoming surface is arranged on the side of the second connecting wall facing the first connecting wall, a third reflecting surface is arranged on the side of the second connecting wall facing away from the annular light-emitting surface, a fourth light-emitting surface is arranged on the side of the first connecting wall facing the second light-collecting surface, the third reflecting surface is arranged obliquely relative to the third light-incoming surface and the inclined surface, respectively, the third reflecting surface can be used to reflect light incident from the third light-incoming surface into the second light-guiding portion to the inclined surface, and the inclined surface is used to reflect light received from the third reflecting surface to the fourth light-emitting surface, and finally the fourth light-emitting surface is incident into the second light-collecting surface of the light-emitting portion.

[0014] In some embodiments, the angle θ3 between the third light-incoming surface and the third reflecting surface satisfies: 50°≤θ3≤70°, so that the third reflecting surface can efficiently reflect the light entering the second light-guiding portion from the third light-incoming surface toward the inclined surface, thereby improving the utilization rate of the light from the light source.

[0015] In some embodiments, the light guiding device may include a second light shading layer, which may cover the surfaces of the second light guiding portion except the third light input surface and the fourth light output surface, so as to reduce the risk of light in the second light guiding portion spreading to the outside of the second light guiding portion through other surfaces other than the light output surface, thereby improving the utilization rate of the light.

[0016] In some embodiments, the thickness t2 of the second light-shielding layer satisfies: 0.7 mm ≤ t2 ≤ 1.1 mm to ensure its light-shielding effect.

[0017] Exemplarily, the material of the second light-shielding layer may be silica gel, and the color of the second light-shielding layer may be a dark color such as black, dark gray, or gray.

[0018] In some embodiments, the first light-incoming surface and the second light-incoming surface are used to jointly receive light from M light sources, the loss coefficient of the first light-guiding portion is α1, and the maximum distance between the first reflecting surface and the first light-emitting surface is L1; the third light-incoming surface is used to receive light from P light sources, the loss coefficient of the second light-guiding portion is α2, and the sum of the maximum distance between the third reflecting surface and the inclined surface and the maximum distance between the inclined surface and the fourth light-emitting surface is L2. M, α1, L1, P, α2, and L2 satisfy the following: Such a design can improve the uniformity of the light emitting brightness of each light emitting surface of the first light guide part and the fourth light emitting surface of the second light guide part.

[0019] In some embodiments, the first light guide portion may be doped with a light homogenizer, and the doping concentration N1 of the light homogenizer in the first light guide portion satisfies: 0.1%≤N1≤0.3%, so that the first light guide portion can achieve uniform light guiding of each light propagation path inside it and improve the uniformity of light output brightness of each light output surface.

[0020] Similarly, the second light guide portion may also be doped with a light homogenizer, and the doping concentration N2 of the light homogenizer in the second light guide portion satisfies: 0.1%≤N2≤0.3%, so that the second light guide portion can achieve uniform light guiding of each light propagation path inside it, thereby improving the uniformity of the light output brightness of the fourth light output surface.

[0021] In some embodiments, the haze H of the light emitting portion satisfies: 70%≤H≤90%, so as to improve the light emitting uniformity of the annular light emitting surface.

[0022] In a second aspect, the utility model further provides an expansion dock, the expansion dock comprising a circuit board and a light guide device in any embodiment of the first aspect, the light guide device being fixed to the circuit board. The circuit board is provided with a first light source and a second light source, wherein the first light source is used to emit light to the first light guide portion, and the second light source is used to emit light to the second light guide portion. By applying the above-mentioned light guide device, the expansion dock can achieve uniform light output brightness, which helps to improve the user experience.

[0023] In some embodiments, the first light guide portion and the second light guide portion may be disposed on both sides of the circuit board. The first light source is disposed on the same side as the first light guide portion, and the distance D1 between the first light source and the light-entering surface of the first light guide portion satisfies: 0.3mm≤D1≤0.7mm, so that the light-entering surface of the first light guide portion can achieve higher light collection efficiency. The second light source is disposed on the same side as the second light guide portion, and the distance D2 between the second light source and the light-entering surface of the second light guide portion satisfies: 0.3mm≤D2≤0.7mm, so that the light-entering surface of the second light guide portion can achieve higher light collection efficiency.

[0024] In some embodiments, the circuit board is provided with a connector, at least part of the connector is provided on the inner side of the ring of the light emitting portion, and the connector is exposed to the ring-shaped light emitting surface of the light emitting portion, so that the ring-shaped light emitting surface is used to illuminate the interface area of ​​the connector. Exemplarily, the connector can be, but is not limited to, Type-A, Type-B, Type-C, etc.

[0025] In some embodiments, the docking station includes a shell, and the shell is provided with an opening. The annular light-emitting surface of the light-emitting portion is provided with an annular boss, and the annular boss is located in the opening of the shell, and the interface of the connector is provided on the inner side of the annular boss. In this way, on the outer light surface of the docking station, the annular boss can form an annular lighting area arranged around the interface of the connector, thereby further improving the lighting effect of the interface area of ​​the connector.

[0026] In a third aspect, the utility model further provides a vehicle, the vehicle comprising a vehicle body and a docking station in any embodiment of the second aspect, the docking station being arranged in the vehicle body. The interface area of ​​the docking station can achieve uniform light output brightness, providing a good lighting effect for the plugging operation of the passenger, thereby helping to improve the passenger's use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a vehicle provided by an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of the structure of an expansion dock provided by an embodiment of the utility model;

[0029] Figure 3 for Figure 2 A partial structural diagram of the expansion dock shown in ;

[0030] Figure 4 for Figure 3 Schematic diagram of the local structure;

[0031] Figure 5 A schematic diagram of the structure of the light guide device provided by an embodiment of the utility model at a viewing angle;

[0032] Figure 6 A schematic diagram of the structure of the light guide device provided by an embodiment of the utility model at another viewing angle;

[0033] Figure 7 A schematic diagram of the light propagation path of the light guide device provided in an embodiment of the utility model;

[0034] Figure 8 This is a schematic diagram of simulation results of the light guide device provided by the utility model.

[0035] Reference numerals:

[0036] 1-vehicle; 100-body; 200-chassis; 300-dock; 310-housing; 311-opening; 320-connector; 330-circuit board;

[0037] 330a - first side of the circuit board; 330b - second side of the circuit board; 331 - first light source; 332 - second light source; 340 - light guide device;

[0038] 341-first light guide portion; 3411-first side wall; 3411a-first light incident surface; 3411b-first reflecting surface; 34111-first notch;

[0039] 3412 - second side wall; 3412a - second light-incoming surface; 3412b - second reflecting surface; 34121 - second notch; 3413 - third side wall;

[0040] 342-second light guide portion; 3421-first connecting wall; 3421a-inclined surface; 3422-second connecting wall; 3422a-third light-entering surface;

[0041] 3422b-third reflecting surface; 343-light emitting portion; 343a-annular light emitting surface; 343b-first light receiving surface; 343c-second light receiving surface;

[0042] 3431 - first frame; 3432 - second frame; 3433 - third frame; 3434 - fourth frame; 3435 - annular boss. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the utility model clearer, the embodiments of the utility model will be further described in detail in conjunction with the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments described herein. The same figure marks in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. The words expressing position and direction described in the embodiments of the utility model are all explained with the accompanying drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of the utility model. The drawings of the embodiments of the utility model are only used to illustrate the relative position relationship and do not represent the true proportion.

[0044] It should be noted that specific details are described in the following description to facilitate understanding of the present invention. However, the embodiments of the present invention can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the embodiments of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Figure 1 A schematic diagram of the structure of a vehicle 1 provided in an embodiment of the utility model. Figure 1 As shown, the vehicle 1 provided in the embodiment of the utility model includes but is not limited to a gasoline vehicle, a pure electric vehicle / battery electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV) or a new energy vehicle (NEV), etc.

[0046] The vehicle 1 includes a body 100, which can provide comfortable riding conditions for passengers and protect passengers from vibration, noise, exhaust gas and the influence of bad weather when the vehicle is running. In addition, the vehicle 1 also includes a powertrain and a chassis 200, which integrates a transmission system, a running system, a steering system, and a braking system, and can be used to receive power from the powertrain to drive the vehicle 1 to travel.

[0047] With the continuous development of intelligent vehicles, the role of the intelligent experience of the body 100 cockpit in the competitiveness of the whole vehicle is becoming increasingly prominent. For example, in order to provide passengers with a more convenient and efficient charging experience, the center console, armrest box and other locations in the cockpit are generally equipped with expansion docks, which can provide passengers with multiple and various types of interfaces to meet the charging needs of passengers' electronic devices. Since the interface size of the expansion dock is usually small, it is easy for passengers to misplace the plug when using it, especially when the light in the cockpit is relatively dim, this situation is more likely to occur, resulting in a decrease in the user experience.

[0048] In view of the above problems, the embodiments of the present utility model provide a light guide device and an expansion dock using the light guide device, which can make the interface area of ​​the expansion dock achieve uniform light output brightness, thereby providing a good lighting effect for the passenger's plugging operation and improving the passenger's user experience. The light guide device and the expansion dock are described below in conjunction with specific embodiments.

[0049] Figure 2 This is a schematic diagram of the structure of a docking station 300 provided in an embodiment of the utility model. Figure 2 As shown, in the embodiment of the utility model, the docking station 300 includes a housing 310 and one or more connectors 320, and the one or more connectors 320 are arranged in the housing 310. One side surface of the housing 310 is provided with openings 311 corresponding to the connectors 320, and the interface of the connector 320 is arranged in the corresponding opening 311. The connector 320 can be, but is not limited to, a type such as Type-A, Type-B, and Type-C.

[0050] In this embodiment, the expansion dock 300 can be arranged in the cabin of the vehicle, for example, in a center console or an armrest box, and a side of the shell 310 having an opening 311 is exposed to the exterior surface of the cabin for passengers to use.

[0051] In some other embodiments, the docking station 300 may also be applied to other devices, or may be used as an independent device. For example, the docking station 300 may be used as an expansion device for a notebook computer, so that the notebook computer can be connected to multiple accessories or external devices.

[0052] Figure 3 for Figure 2 The partial structural diagram of the expansion dock 300 is shown in FIG. Figure 2 and Figure 3 As shown, the docking station 300 also includes a circuit board 330, which is disposed in the housing 310, and the connector 320 can be disposed on the circuit board 330. The figure shows an example in which the circuit board 330 is provided with two connectors 320, and the two connectors can be Type-A and Type-C respectively. In a specific implementation, the connector 320 can be disposed at the edge of the circuit board 330 so that the interface of the connector 320 can extend into the opening 311 of the housing 310.

[0053] Figure 4 for Figure 3 Schematic diagram of the local structure. Figure 4 As shown, in the embodiment of the utility model, the docking station 300 further includes a light guide device 340, and the light guide device 340 may be one or more. The light guide device 340 is arranged in a one-to-one correspondence with the connector, and the light guide device 340 may be arranged on the surrounding side of the corresponding connector 320. The circuit board 330 is provided with a light source, and the light guide device 340 may receive light from the light source and form a ring-shaped luminous area surrounding the interface of the connector 320 to illuminate the interface area of ​​the connector 320.

[0054] Figure 5 and Figure 6 This is a schematic diagram of the structure of the light guide device 340 provided in the embodiment of the utility model at different viewing angles. Figures 4 to 6 As shown, in this embodiment, the light guide device 340 includes a first light guide portion 341, a second light guide portion 342 and a light emitting portion 343. The light emitting portion 343 is an annular component, and the light emitting portion 343 includes an annular light emitting surface 343a, a first light receiving surface 343b and a second light receiving surface 343c. The annular light emitting surface 343a is disposed toward the opening 311 of the housing 310 (refer to Figure 2 As shown in the figure, the first light receiving surface 343b is arranged opposite to the annular light emitting surface 343a, and the second light receiving surface 343c is connected between the first light receiving surface 343b and the annular light emitting surface 343a. The first light guiding portion 341 is connected to the first light receiving surface 343b, and the first light guiding portion 341 extends in a direction opposite to the annular light emitting surface 343a, and the first light guiding portion 341 can be used to guide the light received from the light source to the first light receiving surface 343b. The second light receiving portion is connected to the second light receiving surface 343c, and the second light guiding portion 342 extends in a direction opposite to the annular light emitting surface 343a, and the second light guiding portion 342 is used to guide the light received from the light source to the second light receiving surface 343c.

[0055] The light emitting portion 343 receives light through the first light receiving surface 343b and the second light receiving surface 343c. The incident angle of the light on the first light receiving surface 343b is different from the incident angle of the light on the second light receiving surface 343c, so that each area of ​​the light emitting portion 343 can be evenly covered by the light, thereby forming a uniform annular light-emitting area on the annular light emitting surface 343a of the light emitting portion 343.

[0056] In some embodiments, the light emitting portion 343 may be a substantially rectangular ring structure. The light emitting portion 343 includes a first frame 3431, a second frame 3432, a third frame 3433, and a fourth frame 3434, wherein the first frame 3431, the second frame 3432, the third frame 3433, and the fourth frame 3434 are sequentially connected end to end. The first frame 3431 and the third frame 3433 are arranged opposite to each other, and the second frame 3432 and the fourth frame 3434 are arranged opposite to each other. One side surface of the first frame 3431, the second frame 3432, the third frame 3433, and the fourth frame 3434 jointly form an annular light emitting surface 343a, and the other side surfaces of the first frame 3431, the second frame 3432, the third frame 3433, and the fourth frame 3434 jointly form a first light receiving surface 343b, and the side surface of the fourth frame 3434 facing away from the second frame 3432 forms a second light receiving surface 343c.

[0057] Based on the above structure of the light emitting portion 343, the first light guide portion 341 can be connected to the first frame 3431, the second frame 3432 and the third frame 3433 respectively, and the second light guide portion 342 can be connected to the fourth frame 3434, so that the first light receiving surface 343b receives light through the first frame 3431, the second frame 3432 and the third frame 3433, and the second light receiving surface 343c receives light through the fourth frame 3434. In other words, each frame of the light emitting portion 343 is incident with light, which helps to make the annular light emitting surface 343a form a uniform brightness display.

[0058] In some embodiments, the annular light-emitting surface 343a of the light-emitting portion 343 is provided with an annular boss 3435. When the light-emitting portion 343 is a rectangular ring, the annular boss 3435 is also a corresponding rectangular ring structure, and the edges of the annular boss 3435 are respectively provided on the first frame 3431, the second frame 3432, the third frame 3433, and the fourth frame 3434. It is easy to understand that when the annular light-emitting surface 343a can achieve uniform brightness display, the annular boss 3435 can also achieve uniform light emission. After the circuit board 330 provided with the light guide device 340 is assembled in the shell 310, the annular boss 3435 is located in the opening 311 of the shell 310 (refer to Figure 2 As shown in the figure), the interface of the connector 320 is located on the inner side of the ring-shaped boss 3435, thereby further improving the lighting effect of the interface area of ​​the connector 320.

[0059] In this embodiment, the material of the light emitting portion 343 may be polymethyl methacrylate (PMMA). PMMA may also be called acrylic. This material has a high light transmittance, which helps to reduce the propagation loss of light in the light emitting portion 343. In addition, the haze H of the light emitting portion 343 satisfies: 70%≤H≤90%. Haze refers to the percentage of the transmitted light intensity that deviates from the incident light by more than 2.5° to the total transmitted light intensity. The greater the haze, the lower the film gloss and transparency of the light emitting portion 343. By designing the haze of the light emitting portion 343 to be within the above range, the light emitting uniformity of the annular light emitting surface 343a can be improved.

[0060] Please continue to refer to Figures 4 to 6 In this embodiment, the first light guide portion 341 may be disposed on the first side 330a of the circuit board 330, and the first light source 331 is disposed on the first side 330a of the circuit board 330. The first light guide portion 341 may receive light emitted by the first light source 331. The type of the first light source 331 is not limited, and may be, for example, a light-emitting diode (LED). The first light guide portion 341 is generally a U-shaped structure, and the U-shaped opening side of the first light guide portion 341 is disposed toward the first side 330a of the circuit board 330. The first light guide portion 341 and the first side 330a of the circuit board 330 enclose a receiving space, and the receiving space is communicated with the annular inner space of the light exit portion 343. The connector 320 is disposed in the receiving space, and the interface of the connector 320 may extend to the annular inner space of the light exit portion 343.

[0061] The first light guide portion 341 includes a first side wall 3411, a second side wall 3412, and a third side wall 3413. The first side wall 3411 is arranged opposite to the second side wall 3412, and the third side wall 3413 connects the first side wall 3411 and the second side wall 3412. In a specific implementation, the first side wall 3411 is connected to the first frame 3431 of the light exit portion 343, the second side wall 3412 is connected to the third frame 3433 of the light exit portion 343, and the third side wall 3413 is connected to the second frame 3432 of the light exit portion 343.

[0062] A first light-incoming surface 3411a is disposed on a side of the first side wall 3411 facing away from the third side wall 3413, and the first light-incoming surface 3411a is disposed toward the circuit board 330. A first reflecting surface 3411b is disposed on a side of the first side wall 3411 facing away from the first light-collecting surface 343b, and a first light-emitting surface is disposed on a side of the first side wall 3411 facing the first light-collecting surface 343b, and the first light-emitting surface is disposed in contact with the first light-collecting surface 343b. The first reflecting surface 3411b is disposed obliquely relative to the first light-incoming surface 3411a, and the first reflecting surface 3411b is disposed obliquely relative to the first light-collecting surface 343b. Exemplarily, the angle between the first reflecting surface 3411b and the first light-incoming surface 3411a and the angle between the first reflecting surface 3411b and the first light-collecting surface 343b are both acute angles. The first light incident surface 3411a is used to receive light emitted by the first light source 331, and the first reflecting surface 3411b is used to reflect the light incident on the first light guide portion 341 from the first light incident surface 3411a toward the first light emitting surface, and finally the light is incident on the first light receiving surface 343b from the first light emitting surface.

[0063] A second light-incoming surface 3412a is provided on the side of the second side wall 3412 facing away from the third side wall 3413, and the second light-incoming surface 3412a is also provided toward the circuit board 330. A second reflecting surface 3412b is provided on the side of the second side wall 3412 facing away from the first light-collecting surface 343b, and a second light-emitting surface is provided on the side of the second side wall 3412 facing the first light-collecting surface 343b, and the second light-emitting surface is provided in contact with the first light-collecting surface 343b. The second reflecting surface 3412b is inclined relative to the second light-incoming surface 3412a, and the second reflecting surface 3412b is inclined relative to the second light-collecting surface 343c. Exemplarily, the angle between the second reflecting surface 3412b and the second light-incoming surface 3412a and the angle between the second reflecting surface 3412b and the second light-collecting surface 343c are both acute angles. The second light-incoming surface 3412a is used to receive light emitted by the first light source 331, and the second reflecting surface 3412b is used to reflect the light incident on the first light-guiding portion 341 from the first light-incoming surface 3411a toward the second light-emitting surface, and finally the light is incident on the first light-receiving surface 343b from the second light-emitting surface.

[0064] A third light emitting surface is disposed on one side of the third side wall 3413 facing the light emitting portion 343, and the third light emitting surface is in contact with the first light receiving surface 343b. It is easy to understand that, in addition to being reflected, part of the light entering the first light guide portion 341 from the first light inlet surface 3411a and the second light inlet surface 3412a may also be scattered or refracted through other propagation paths, and this part of the light may enter the third side wall 3413, propagate in the third side wall 3413 toward the third light emitting surface, and finally enter the second light receiving surface 343c from the third light emitting surface.

[0065] It can be seen from the above description that the first light guiding portion 341 receives light through the first light entering surface 3411a and the second light entering surface 3412a on both sides, and transmits light to the first light receiving surface 343b of the light emitting portion 343 through the first light emitting surface, the second light emitting surface and the third light emitting surface, so that the first light receiving surface 343b forms a light receiving area that is approximately U-shaped.

[0066] In some embodiments of the utility model, a first notch 34111 is provided on a side of the first side wall 3411 facing away from the third side wall 3413, and the first notch 34111 may be provided at an end of the first side wall 3411 facing away from the first light receiving surface 343b. The surface of the first notch 34111 facing the first side 330a of the circuit board 330 may be formed as a first light entering surface 3411a. A portion of the first light source 331 may be located in the first notch 34111, that is, the portion of the first light source 331 is provided in an area where the first side 330a of the circuit board 330 and the first light entering surface 3411a are provided opposite to each other, so that the light emitted by the first light source 331 may be efficiently incident on the first light entering surface 3411a, thereby improving the utilization rate of the light of the first light source 331.

[0067] In one implementation, the distance D1 between the first light source 331 in the first notch 34111 and the first light incident surface 3411a satisfies: 0.3 mm≤D1≤0.7 mm, so that the first light incident surface 3411a can collect light more efficiently.

[0068] Similarly, a second notch 34121 is provided on a side of the second side wall 3412 facing away from the third side wall 3413, and the second notch 34121 can be provided at an end of the second side wall 3412 facing away from the first light receiving surface 343b. The surface of the second notch 34121 facing the first side 330a of the circuit board 330 can be formed as a second light entering surface 3412a. In addition, part of the first light source 331 can be located in the second notch 34121, that is, the part of the first light source 331 is provided in the area where the first side 330a of the circuit board 330 and the second light entering surface 3412a are provided opposite to each other, so that the light emitted by the first light source 331 can be efficiently incident on the second light entering surface 3412a, thereby improving the utilization rate of the light of the first light source 331.

[0069] In one implementation, the distance D1′ between the first light source 331 in the second notch 34121 and the second light incident surface 3412a satisfies: 0.3 mm≤D1′≤0.7 mm, so that the second light incident surface 3412a can collect light more efficiently.

[0070] In this embodiment, the first notch 34111 and the second notch 34121 are arranged approximately axially symmetrically, and the number of the first light sources 331 in the first notch 34111 and the number of the first light sources 331 in the second notch 34121 can be the same, so that the first light guide portion 341 can achieve substantially the same amount of light entering through the two light-entering surfaces, thereby improving the uniformity of the light-emitting brightness of each light-emitting surface of the first light guide portion 341. Exemplarily, the number of the first light sources 331 can be M, where M is a positive integer greater than or equal to 2, and the number of the first light sources 331 in the first notch 34111 and the number of the first light sources 331 in the second notch 34121 are M / 2, respectively.

[0071] In this embodiment, the material of the first light guide portion 341 is PMMA. The second light guide portion 342 is doped with a light homogenizer, and the doping concentration N1 of the light homogenizer in the first light guide portion 341 satisfies: 0.1%≤N1≤0.3%, so that the first light guide portion 341 can achieve uniform light guidance of each light propagation path inside it, and improve the uniformity of the light output brightness of each light output surface. Here, the doping concentration can be understood as the number of atoms of the light homogenizer contained in the PMMA substrate per unit volume or unit mass.

[0072] In some embodiments, the first light guide portion 341 may further include a first light shading layer, which may cover all surfaces of the first light guide portion 341 except the first light incident surface 3411a, the second light incident surface 3412a, the first light emitting surface, the second light emitting surface and the third light emitting surface, so that the light entering the first light guide portion 341 can be repeatedly refracted in the first light guide portion 341 and then emitted toward the light emitting portion 343 through each light emitting surface, thereby reducing the risk of the light in the first light guide portion 341 spreading to the outside of the first light guide portion 341 through other surfaces other than the light emitting surfaces, thereby improving the utilization rate of the light.

[0073] Exemplarily, the material of the first light shielding layer may be silica gel, and the color of the first light shielding layer may be dark colors such as black, dark gray, gray, etc. The thickness t of the first light shielding layer satisfies: 0.7 mm ≤ t ≤ 1.1 mm to ensure its light shielding effect.

[0074] Please continue to refer to Figures 4 to 6In the embodiment of the utility model, the second light guiding portion 342 is roughly an L-shaped structure, and the second light guiding portion 342 includes a first connecting wall 3421 and a second connecting wall 3422, one side of the first connecting wall 3421 is connected to the second light receiving surface 343c of the light emitting portion 343, and the other side of the first connecting wall 3421 extends in a direction away from the second light receiving surface 343c, and the side of the first connecting wall 3421 facing away from the second light receiving surface 343c is connected to the side of the second connecting wall 3422 through a chamfer, and the chamfer has an inclined surface 3421a inclined relative to the second light receiving surface 343c; the other side of the second connecting wall 3422 extends in a direction away from the annular light emitting surface 343a.

[0075] According to the relative positional relationship between the first light receiving surface 343b and the second light receiving surface 343c, and the structures of the first light guide part 341 and the second light guide part 342, it can be seen that the second light guide part 342 is located at the U-shaped opening side of the first light guide part 341. The second connecting wall 3422 of the second light guide part 342 and the first side wall 3411 and the second side wall 3412 of the first light guide part 341 can have a certain interval. When the light guide device 340 is assembled to the circuit board 330, one end of the circuit board 330 can be inserted between the first light guide part 341 and the second light guide part 342, the first connecting wall 3421 of the second light guide part 342 is blocked at one end of the circuit board 330, and the second connecting wall 3422 of the second light guide part 342 is arranged on the second side 330b of the circuit board 330. The second side 330b of the circuit board 330 is provided with a second light source 332, and the second light guide part 342 can receive the light emitted by the second light source 332. Exemplarily, the second light source 332 may also be an LED.

[0076] Among them, the side of the second connecting wall 3422 facing the first connecting wall 3421 is provided with a third light-incoming surface 3422a, and the third light-incoming surface 3422a is provided toward the circuit board 330. The side of the second connecting wall 3422 facing away from the annular light-emitting surface 343a is provided with a third reflecting surface 3422b, and the side of the first connecting wall 3421 facing the second light-collecting surface 343c is provided with a fourth light-emitting surface, and the fourth light-emitting surface is provided in contact with the second light-collecting surface 343c. The third reflecting surface 3422b is inclined relative to the third light-incoming surface 3422a, and the third reflecting surface 3422b is inclined relative to the inclined surface 3421a. Exemplarily, the angle between the third reflecting surface 3422b and the third light-incoming surface 3422a is an acute angle, the angle between the third reflecting surface 3422b and the inclined surface 3421a can be an acute angle, or a right angle or an obtuse angle, and the angle between the inclined surface 3421a and the fourth light-emitting surface is an acute angle.

[0077] The third light-incoming surface 3422a is used to receive the light emitted by the second light source 332, and the third reflecting surface 3422b is used to reflect the light incident on the second light-guiding portion 342 from the third light-incoming surface 3422a toward the inclined surface 3421a. The inclined surface 3421a can be used to reflect the light received from the third reflecting surface 3422b to the fourth light-emitting surface, and finally the light is incident on the second light-receiving surface 343c of the light-emitting portion 343 from the fourth light-emitting surface, so that the fourth frame 3434 of the light-emitting portion 343 achieves a luminous effect.

[0078] In some embodiments of the present invention, the third light-incoming surface 3422a is spaced apart from the second side 330b of the circuit board 330, and the second light source 332 can be disposed in a region where the second side 330b of the circuit board 330 and the third light-incoming surface 3422a are disposed opposite each other, so that the light emitted by the second light source 332 can be efficiently incident on the third light-incoming surface 3422a, thereby improving the utilization rate of the light of the second light source 332. Exemplarily, the second light source 332 can be P, where P is a positive integer greater than or equal to 1.

[0079] In one implementation, the distance D2 between the second light source 332 and the third light incident surface 3422a satisfies: 0.3 mm≤D2≤0.7 mm, so that the third light incident surface 3422a can collect light with higher efficiency.

[0080] In this embodiment, the material of the second light guide portion 342 is PMMA. The second light guide portion 342 is doped with a light homogenizer, and the doping concentration N2 of the light homogenizer in the second light guide portion 342 satisfies: 0.1%≤N2≤0.3%, so that the second light guide portion 342 can achieve uniform light guidance of each light propagation path inside it, thereby improving the uniformity of the light output brightness of the fourth light output surface.

[0081] In some embodiments, the light guiding device 340 may include a second light shading layer, which may cover the surface of the second light guiding portion 342 except the third light inlet surface 3422a and the fourth light outlet surface, so that the light entering the second light guiding portion 342 can be repeatedly refracted or reflected in the second light guiding portion 342 and then emitted toward the light outlet portion 343 through the fourth light outlet surface, thereby reducing the risk of the light in the second light guiding portion 342 spreading to the outside of the second light guiding portion 342 through other surfaces other than the light outlet surface, thereby improving the utilization rate of the light.

[0082] Exemplarily, the material of the second light shielding layer may be silica gel, and the color of the second light shielding layer may be dark colors such as black, dark gray, gray, etc. The thickness t2 of the second light shielding layer satisfies: 0.7 mm ≤ t ≤ 1.1 mm to ensure its light shielding effect.

[0083] Figure 7 Schematic diagram of the light propagation path of the light guide device 340 provided in the embodiment of the utility model. Figure 7As shown, in this embodiment, the angle θ1 between the first light-incoming surface 3411a and the first reflecting surface 3411b satisfies: 50°≤θ1≤70°. Under this angle condition, the first reflecting surface 3411b can efficiently reflect the light entering the first light guide portion 341 from the first light-incoming surface 3411a to the first light-emitting surface, thereby helping to improve the utilization rate of the light of the first light source 331. Similarly, the angle θ2 (not shown in the figure) between the second light-incoming surface 3412a and the second reflecting surface 3412b and the angle θ3 between the third light-incoming surface 3422a and the third reflecting surface 3422b can respectively satisfy: 50°≤θ2≤70°, 50°≤θ3≤70°.

[0084] As mentioned above, the first light-incoming surface 3411a and the second light-incoming surface 3412a jointly receive the light from the M first light sources 331, and the third light-incoming surface 3422a is used to receive the light from the P second light sources 332. The loss coefficient of the first light-guiding portion 341 is defined as α1, the maximum distance between the first reflecting surface 3411b and the first light-emitting surface is defined as L1, the loss coefficient of the second light-guiding portion 342 is defined as α2, the maximum distance between the third reflecting surface 3422b and the inclined surface 3421a is defined as l1, and the maximum distance between the inclined surface 3421a and the fourth light-emitting surface is defined as l2. Then, the maximum length of the propagation path of the light reflected by the first reflecting surface 3411b is L1, and the maximum length of the propagation path of the light reflected by the third reflecting surface 3422b is L2, and L2=l1+l2. In order to ensure the uniformity of the light emitting brightness of each light emitting surface of the first light guide portion 341 and the fourth light emitting surface of the second light guide portion 342, M, α1, L1, P, α2, and L2 satisfy the following conditions: .

[0085] The light guide device provided in the embodiment of the utility model is simulated, and the simulation model is as follows:

[0086] The first light guide part, the second light guide part, and the light output part are all made of PMMA, and the surfaces of each component are ideally smooth and lossless transmission surfaces. The surfaces of the first light guide part other than the first light-incoming surface, the second light-incoming surface, the first light-outputting surface, the second light-outputting surface, and the third light-outputting surface are covered by a black first light-shielding layer. There are two first light sources, one of which emits a light beam to the first light-incoming surface of the first light guide part, and the other first light source emits a light beam to the second light-incoming surface of the first light guide part; there is one second light source, and the second light source emits a light beam to the third light-incoming surface of the second light guide part. Both the first and second light sources are LEDs, and the size of the LED is 1.2mm 0.8mm, the light beam emitted by the LED is a Gaussian beam or an approximate Gaussian beam, the divergence angle corresponding to the 1 / e2 central light intensity is 50deg, and the power of the LED is 0.022w; the illumination of each light-incoming surface of the light guide device is less than 0.01lux, and the light propagation efficiency in the light guide device is 1.1%.

[0087] Figure 8 This is a schematic diagram of the simulation results of the light guide device provided by the utility model, wherein the horizontal and vertical coordinates represent the size of the annular light emitting surface of the light guide device, and the color bar on the left represents the light intensity. Figure 8 It can be seen that the difference in radiant illumination of various areas of the annular light emitting surface is small, indicating that the light guiding device provided by the utility model can enable the annular light emitting surface to achieve relatively uniform light emitting brightness.

[0088] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A light guide device, characterized in that: It comprises a light emitting portion, a first light guiding portion and a second light guiding portion, wherein: The light emitting portion is an annular component, comprising an annular light emitting surface and a first light receiving surface and a second light receiving surface, wherein the first light receiving surface is arranged opposite to the annular light emitting surface, and the second light receiving surface connects the annular light emitting surface and the first light receiving surface; The first light guiding portion is connected to the first light collecting surface, and the first light guiding portion is used to guide the light received from the light source to the first light collecting surface; The second light guiding portion is connected to the second light collecting surface, and the second light guiding portion is used to guide the light received from the light source to the second light collecting surface.

2. The light guide device according to claim 1, characterized in that The light exit portion comprises a first frame, a second frame, a third frame and a fourth frame connected in sequence, the first frame is arranged opposite to the third frame, and the second frame is arranged opposite to the fourth frame; The first light guide portion is connected to the first frame, the second frame, and the third frame, and the second light guide portion is connected to the fourth frame.

3. The light guide device according to claim 1 or 2, characterized in that: The first light guide portion includes a first side wall, a second side wall and a third side wall, the first side wall is arranged opposite to the second side wall, and the third side wall connects the first side wall and the second side wall; A first light-incoming surface is disposed on a side of the first side wall facing away from the third side wall, a first reflecting surface is disposed on a side of the first side wall facing away from the first light-collecting surface, and a first light-emitting surface is disposed on a side of the first side wall facing the first light-collecting surface. The first reflecting surface is inclined relative to the first light-incoming surface and the first light-emitting surface, respectively, and the first reflecting surface is used to reflect light incident from the first light-incoming surface into the first light-guiding portion toward the first light-emitting surface; A second light-incoming surface is disposed on a side of the second side wall facing away from the third side wall, a second reflecting surface is disposed on a side of the second side wall facing away from the first light-collecting surface, a second light-emitting surface is disposed on a side of the second side wall facing the first light-collecting surface, the second reflecting surface is inclined relative to the second light-incoming surface and the second light-emitting surface, respectively, and the second reflecting surface is used to reflect light incident from the second light-incoming surface into the first light-guiding portion toward the second light-emitting surface; A third light emitting surface is disposed on a side of the third side wall facing the light emitting portion.

4. The light guide device according to claim 3, characterized in that The included angle θ1 between the first light incident surface and the first reflecting surface satisfies: 50°≤θ1≤70°; An included angle θ2 between the second light incident surface and the second reflecting surface satisfies: 50°≤θ2≤70°.

5. The light guide device according to claim 3, characterized in that: The light guiding device comprises a first light shielding layer, which covers the surface of the first light guiding part except the first light incident surface, the second light incident surface, the first light emitting surface, the second light emitting surface, and the third light emitting surface.

6. The light guide device according to claim 5, characterized in that The thickness t1 of the first light shielding layer satisfies: 0.7 mm≤t1≤1.1 mm.

7. The light guide device according to claim 3, characterized in that: The second light guide portion includes a first connecting wall and a second connecting wall, one side of the first connecting wall is connected to the second light receiving surface, the side of the first connecting wall facing away from the second light receiving surface is connected to the second connecting wall via a chamfer, the chamfer includes an inclined surface inclined relative to the second light receiving surface, and the second connecting wall extends in a direction away from the annular light emitting surface; A third light-incoming surface is provided on the side of the second connecting wall facing the first connecting wall, a third reflecting surface is provided on the side of the second connecting wall facing away from the annular light-emitting surface, and a fourth light-emitting surface is provided on the side of the first connecting wall facing the second light-collecting surface. The third reflecting surfaces are inclined relative to the third light-incoming surface and the inclined surface, respectively. The third reflecting surface is used for reflecting the light incident from the third light-incoming surface into the second light-guiding portion to the inclined surface, and the inclined surface is used for reflecting the light received from the third reflecting surface to the fourth light-emitting surface.

8. The light guide device according to claim 7, characterized in that An included angle θ3 between the third light incident surface and the third reflecting surface satisfies: 50°≤θ3≤70°.

9. The light guide device according to claim 7, characterized in that: The first light-incoming surface and the second light-incoming surface are used to jointly receive light from M light sources, the loss coefficient of the first light-guiding portion is α1, and the maximum distance between the first reflecting surface and the first light-emitting surface is L1; The third light-incoming surface is used to receive light from P light sources, the loss coefficient of the second light-guiding portion is α2, and the sum of the maximum distance between the third reflecting surface and the inclined surface and the maximum distance between the inclined surface and the fourth light-emitting surface is L2; M, α1, L1, P, α2, L2 satisfy the following conditions: .

10. The light guide device according to claim 1, wherein: The haze H of the light emitting portion satisfies: 70%≤H≤90%.

11. A docking station, characterized in that: It comprises a circuit board and a light guide device as described in any one of claims 1 to 10, wherein the light guide device is fixed to the circuit board, and the circuit board is provided with a first light source and a second light source, wherein the first light source is used to emit light to the first light guide portion, and the second light source is used to emit light to the second light guide portion.

12. The docking station according to claim 11, wherein: The first light guiding portion and the second light guiding portion are arranged on two sides of the circuit board; The first light source and the first light guide are arranged on the same side, and a distance D1 between the first light source and a light incident surface of the first light guide satisfies: 0.3 mm ≤ D1 ≤ 0.7 mm; The second light source is arranged on the same side as the second light guide portion, and a distance D2 between the second light source and a light incident surface of the second light guide portion satisfies: 0.3 mm≤D2≤0.7 mm.

13. The expansion dock according to claim 11 or 12, characterized in that: The circuit board is provided with a connector, at least a portion of the connector is arranged on the annular inner side of the light emitting portion, and the connector is exposed to the annular light emitting surface of the light emitting portion.

14. A vehicle, characterized in that: It comprises a vehicle body and a docking station as described in any one of claims 11 to 13, wherein the docking station is arranged in the vehicle body.

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