Light guide system with dual light sources

Abstract

A light guide system with dual light sources includes a focusing lens, a light reflecting element, a light guiding element, a replaceable focusing element, a first light source, and a second light source. The focusing lens has a first light incident side and a first light emitting side. The light reflecting element is adjacent to the first light incident side. The light guiding element is disposed between the focusing lens and the light reflecting element, and has a light emitting end, a light incident end, and a total internal reflection portion, the light incident end is located between the first light incident side and the light reflecting element, the light incident end and the total internal reflection portion are located on the bottom side of the light reflecting element, and the total internal reflection portion connects the light incident end and the light emitting end. The replaceable focusing element has a second light incident side and a second light emitting side, the second light emitting side faces the light incident end, and a gap is formed between the second light emitting side and the light incident end. The first light source is disposed on the bottom side of the light reflecting element. The second light source is disposed on the second light incident side.

Description

Technical Field

[0001] The invention relates to a light guide system, in particular to a light guide system with double light sources. Background Art

[0002] Prior art vehicle lighting systems are typically designed with components that produce a light pattern with a cutoff line in order to comply with vehicle lighting regulations.

[0003] Figure 8 is a side plan view of a vehicle lighting system according to the prior art. Figure 8 The vehicle lighting system 200 of the prior art comprises a high beam light source 210, a low beam light source 220, a high beam light source reflection element 230, a low beam light source reflection element 240, a cut-off baffle 250 and a condenser lens 260. The high beam light generated by the high beam light source 210 and the low beam light source 220 are respectively reflected by the high beam light source reflection element 230 and the low beam light source reflection element 240 and then pass through the cut-off baffle 250, and then pass through the condenser lens 260 to generate a high beam light type and a low beam light type. However, the cut-off baffle 250 of the prior art is a plastic baffle plate that has been electroplated or a metal baffle plate that has been made by a computer numerical control (CNC) device, which has the problem of environmental pollution or high price. In particular, the high beam light source 210 and the low beam light source 220 of the prior art are arranged at positions that are quite close, and the space required for heat dissipation is insufficient, and a relatively large heat dissipation system must be used in conjunction with it to provide sufficient heat dissipation performance.

[0004] Fig. 9 This is a schematic diagram of another vehicle lighting system according to the prior art. Figure 8 and 9 ,and Figure 8 The vehicle lighting system 200 shown is different. Fig. 9 The illustrated vehicle lighting system 300 instead uses a solenoid valve shutter as the cutoff shutter 350 to produce the desired light pattern. Figure 8 The vehicle lighting system 200 shown is similar in that Fig. 9 The high beam light source 310 and the low beam light source 320 of the vehicle lighting system 300 are also arranged in a position close to each other, so that Fig. 9 The vehicle lighting system 300 shown also needs to be used in conjunction with a relatively large cooling system to provide sufficient cooling performance.

[0005] Therefore, the vehicle lighting system in the prior art has the technical defect of poor heat dissipation performance.

[0006] This "background technology" section is only used to help understand the content of the present invention. Therefore, the content disclosed in the "background technology" may contain some conventional technologies that are not known to those with ordinary knowledge in the relevant technical field. In addition, the content disclosed in the "background technology" does not represent the content or the problems to be solved by one or more embodiments of the present invention, nor does it mean that it has been known or recognized by those with ordinary knowledge in the relevant technical field before the application of the present invention. Summary of the invention

[0007] The invention provides a light guide system with double light sources and good heat dissipation performance.

[0008] The light guide system with dual light sources provided by the present invention includes a focusing lens, a light reflecting element, a light guiding element, a replaceable focusing element, a first light source and a second light source. The focusing lens has a first light incident side and a first light emitting side relative to the first light incident side. The light reflecting element is adjacent to the first light incident side. The light guiding element is arranged between the light reflecting element and the focusing lens and adjacent to the first light incident side. The light guiding element has a light emitting end, a light incident end and a total internal reflection portion. The light incident end is adjacent to the first light incident side and is located between the first light incident side and the light reflecting element. The light incident end and the total internal reflection portion are located on the bottom side of the light reflecting element. The total internal reflection portion is connected between the light incident end and the light emitting end. The replaceable focusing element is arranged on the bottom side of the light incident end, has a second light incident side and a second light emitting side relative to the second light incident side, the second light emitting side faces the light incident end, and a gap is formed between the second light emitting side and the light incident end. The first light source is arranged on the bottom side of the light reflecting element. The second light source is arranged on the second light incident side.

[0009] In the light guide system with dual light sources of the present invention, since the light output end is located between the first light input side and the light reflective element, the light input end is located at the bottom side of the light reflective element, and the total internal reflection portion is connected between the light input end and the light output end and is located at the bottom side of the light reflective element, the second light source and the first light source can be arranged at a considerable distance from each other, so that the heat energy generated by the first light source and the second light source when working has a considerable space to dissipate, so that only a small heat dissipation system is required to provide the heat dissipation efficiency required by the first light source and the second light source. In addition, the replaceable light focusing element and the light guide element are separated and made independently of each other, and the replaceable light focusing element can be designed as desired, which is beneficial to improving the lighting brightness, adjusting the light spot size, improving dispersion, shortening the production cycle, and reducing the difficulty of injection molding in the process.

[0010] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of the appearance of a light guide system with dual light sources according to an embodiment of the present invention, wherein the first light source and the second light source are omitted;

[0012] Figure 2 is a side plan view schematic diagram of a light guide system with dual light sources according to an embodiment of the present invention;

[0013] Figure 3 is a top plan view of a light guide system with dual light sources according to an embodiment of the present invention, wherein the first light source and the second light source are omitted;

[0014] Figure 4 is a bottom plan view of a light guide system with dual light sources according to an embodiment of the present invention, wherein the first light source and the second light source are omitted;

[0015] Figure 5 is a rear plan view schematic diagram of a light guide system with dual light sources according to an embodiment of the present invention, wherein the first light source and the second light source are omitted;

[0016] Figure 6 is a rear plan view schematic diagram of a light guide system with dual light sources according to an embodiment of the present invention, wherein the first light source is omitted;

[0017] Figure 7 is a rear plan view schematic diagram of a light guide system with dual light sources according to an embodiment of the present invention, wherein the first light source is omitted;

[0018] Figure 8 is a side plan view schematic diagram of a vehicle lighting system according to the prior art; and

[0019] Fig. 9 FIG. 1 is a schematic diagram of the appearance of another vehicle lighting system according to the prior art. DETAILED DESCRIPTION

[0020] The above and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, back, top, bottom, etc., are only the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention.

[0021] Figures 1 to 5 They are respectively the appearance, side view, top view, bottom view and rear view of a light guide system with dual light sources according to an embodiment of the present invention. Figures 1 to 5The light guide system 100 with dual light sources according to an embodiment of the present invention comprises a condenser lens 110, a light reflecting element 120, a light guide element 130, a replaceable condenser element 140, a first light source 150, and a second light source 160. The condenser lens 110 has a first light incident side 111 and a first light emitting side 112. The first light emitting side 112 is opposite to the first light incident side 111. The light reflecting element 120 is adjacent to the first light incident side 111. The light guiding element 130 is disposed between the light reflecting element 120 and the focusing lens 110, and is adjacent to the first light incident side 111. The light guiding element 130 has a light emitting end 131, a light incident end 132 and a total internal reflection portion 133. The light emitting end 131 is adjacent to the first light incident side 111 and is located between the first light incident side 111 and the light reflecting element 120. The light incident end 132 is located on the bottom side of the light reflecting element 120. The total internal reflection portion 133 is connected between the light incident end 132 and the light emitting end 131 and is located on the bottom side of the light reflecting element 120. The replaceable light-concentrating element 140 is disposed at the bottom side of the light-incident end 132, and the replaceable light-concentrating element 140 has a second light-incident side 141 and a second light-emitting side 142, the second light-emitting side 142 is opposite to the second light-incident side 141, the second light-emitting side 142 faces the light-incident end 132, and a gap 170 is formed between the second light-emitting side 142 and the light-incident end 132. The first light source 150 is disposed at the bottom side of the light-reflecting element 120. The second light source 160 is disposed at the second light-incident side 141. In addition, the focusing lens 110, the light-guiding element 130, and the replaceable light-concentrating element 140 are light-transmitting elements. In addition, in the present embodiment, the light-reflecting element 120 may be, for example, a reflective cup, but the present invention is not limited thereto.

[0022] In this embodiment, the condenser lens 110 is a plano-convex lens, but the invention is not limited thereto; in other embodiments, the condenser lens 110 may also be a biconvex lens. In addition, in this embodiment, the light guide element 130 is substantially L-shaped, but the invention is not limited thereto.

[0023] In the present embodiment, the first light source 150 and the second light source 160 may include a light emitting diode (LED) light source or an organic light emitting diode (OLED) light source. The number of the LED light sources may be one or more. The number of the OLED light sources may be one or more. The LED light source includes a LED or a LED module composed of several LEDs. The OLED light source includes a LED or a LED module composed of several LEDs. However, the present invention is not limited thereto. The present invention does not limit the types and quantities of the first light source 150 and the second light source 160.

[0024] In the light guide system 100 with dual light sources of the present embodiment, the first light source 150 is suitable for providing a first light L1, the light reflecting element 120, the light output end 131 and the focusing lens 110 are arranged on the transmission path of the first light L1, the light reflecting element 120 is suitable for reflecting the first light L1, and the first light L1 reflected by the light reflecting element 120 advances toward the light output end 131 and passes through the top side of the light output end 131. After passing through the top side of the light output end 131, the first light L1 reflected by the light reflecting element 120 can enter the focusing lens 110 from the first light input side 111 and leave the focusing lens 110 from the first light output side 112, forming a first light pattern. The second light source 160 is suitable for providing a second light L2, and the replaceable focusing element 140, the light input end 132, the total internal reflection portion 133, the light output end 131 and the focusing lens 110 are arranged on the transmission path of the second light L2. The replaceable focusing element 140 is suitable for collecting the second light L2. After the converged second light ray L2 enters the light-guiding element 130 from the light input end 132, it moves toward the light output end 131 due to the action of the total internal reflection portion 133 and leaves the light-guiding element 130 from the light output end 131. After leaving the light-guiding element 130, the converged second light ray L2 enters the focusing lens 110 from the first light input side 111 and leaves the focusing lens 110 from the first light output side 112, thereby forming a second light pattern.

[0025] Furthermore, the light guide system 100 with dual light sources of this embodiment is applicable to a vehicle lighting system, where the vehicle is, for example, a car. The first light source 150 is, for example, a low-beam light source of the vehicle lighting system, and the second light source 160 is, for example, a high-beam light source of the vehicle lighting system.

[0026] In this embodiment, the replaceable focusing element 140 can be a convex lens type optical element, and the second light-emitting side 142 includes several convex surfaces 143 protruding in a direction away from the second light-incident side 141. The second light L2 enters the replaceable focusing element 140 from the second light-incident side 141 and leaves the replaceable focusing element 140 from the convex surface 143 of the second light-emitting side 142. In addition, in this embodiment, the light emitting end 131 has an end surface 1311 and a top surface 1312, the end surface 1311 faces the focusing lens 110 and is an arc-shaped concave surface, the top surface 1312 connects the end surface 1311 and the total internal reflection portion 133, and the top surface 1312 has two opposite parts, and an inclined surface 1313 is formed between the two parts; after the first light L1 reflected by the light reflecting element 120 passes through the top side of the light emitting end 131, the first light type can have a cut-off line specified by vehicle lighting by setting the two opposite parts of the top surface 1312 of the light emitting end 131 and the inclined surface 1313.

[0027] In the light guide system 100 with dual light sources of the present embodiment, since the light output end 131 is located between the first light input side 111 and the light reflecting element 120, the light input end 132 is located at the bottom side of the light reflecting element 120, and the total internal reflection portion 133 is connected between the light input end 132 and the light output end 131 and is located at the bottom side of the light reflecting element 120, there is a considerable distance between the configuration positions of the second light source 160 and the first light source 150, and there is considerable space for the heat energy generated by the first light source 150 and the second light source 160 when working to dissipate. In this way, the first light source 150 and the second light source 160 can respectively use a smaller heat dissipation system to achieve the required heat dissipation performance.

[0028] In addition, a gap 170 is formed between the replaceable light-concentrating element 140 and the light-guiding element 130, and the replaceable light-concentrating element 140 and the light-guiding element 130 are independently manufactured. The size of the replaceable light-concentrating element 140 is not limited by the size of the light-guiding element 130. For example, the size of the replaceable light-concentrating element 140 can be larger than the size of the light-entering end 132 of the light-guiding element 130. Under the condition that the size of the light-entering end 132 is fixed, the replaceable light-concentrating element 140 with a larger size can be applied to more light sources, which is beneficial to improving the lighting brightness and adjusting the size of the light spot. In addition, the replaceable light-concentrating element 140, the light-guiding element 130 and the focusing lens 110 can be made of the same, partially the same or different materials according to requirements, for example, the desired material is selected from polycarbonate, polymethylmethacrylate and siloxane polymer to change the light path of visible light (with a wavelength between 400 nanometers and 700 nanometers), so as to achieve the effect of improving the dispersion. Furthermore, since the replaceable light-focusing element 140 and the light-guiding element 130 are independently manufactured elements, compared to those manufactured by integrated molding, the production cycle of the replaceable light-focusing element 140 and the light-guiding element 130 that are independently manufactured can be effectively shortened (smaller size), can have better surface deformation, and can avoid injection molding difficulties caused by uneven product thickness.

[0029] Figure 6 FIG. 1 is a rear plan view of a light guide system with dual light sources according to an embodiment of the present invention. Figure 6As shown, in the present embodiment, the replaceable focusing element 140a of the light guide system 100 with dual light sources can be a cup lamp type optical element, the second light emitting side 142a includes a central light emitting portion 143a and a plurality of side light emitting portions 144a, the side light emitting portions 144a are sequentially arranged on both sides of the central light emitting portion 143a, each side light emitting portion 144a has an inner end, an outer end and a surface, the distance between the inner end and the central light emitting portion 143a is smaller than the distance between the outer end and the central light emitting portion 143a, the surface is obliquely connected between the inner end and the outer end, and the thickness of the inner end is greater than the thickness of the outer end, the second light incident side 141a includes a plurality of light incident columns 145a, each light incident column 145a has a top end, a bottom end and a light incident concave portion 146a, the top end of the light incident column is respectively connected to the central light emitting portion 143a and the side light emitting portions 144a, the bottom end is opposite to the top end, the light incident concave portion 146a is arranged at the bottom end and extends toward the top end. Specifically, the average thickness of each side light emitting portion 144a is greater than the average thickness of the central light emitting portion 143a. In this embodiment, the number of the second light sources 160 can be multiple, and the second light sources 160 are respectively arranged opposite to the light incident concave portions 146a of the light incident column 145a. After the second light L2 enters the replaceable light focusing element 140a from the light incident concave portion 146a of the light incident column 145a on the second light incident side 141a, it leaves the replaceable light focusing element 140a from the side light emitting portion 144a of the second light emitting side 142a and the central light emitting portion 143a.

[0030] Figure 7 FIG. 1 is a rear plan view of a replaceable light-concentrating element according to an embodiment of the present invention. Figure 7 As shown, in the present embodiment, the replaceable focusing element 140b of the light guide system 100 with dual light sources can be a reflective cup type optical element, and the replaceable focusing element 140b can also include a plurality of hollow cylinders 147b, and the hollow cylinders 147b are arranged between the second light incident side 141b and the second light emitting side 142b, and each hollow cylinder 147b has a top end, a bottom end and a reflective inner surface 148b, the top end is connected to the second light emitting side 142b, the bottom end is connected to the second light incident side 141b, and the reflective inner surface 148b is connected between the top end and the bottom end. In this embodiment, the number of second light sources 160 can be several, and the second light sources 160 are respectively arranged at the bottom end of the hollow cylinder 147b. After the second light L2 enters the replaceable focusing element 140b from the bottom end of the hollow cylinder 147b on the second light incident side 141b, it is reflected by the reflective inner surface 148b and leaves the replaceable focusing element 140b from the top end of the hollow cylinder 147b and the second light output side 142b.

[0031] In summary, in the light guide system with dual light sources of the embodiment of the present invention, since the light output end is located between the first light input side and the light reflective element, the light input end is located at the bottom side of the light reflective element, and the total internal reflection portion is connected between the light input end and the light output end and is located at the bottom side of the light reflective element, the second light source and the first light source can be arranged at a considerable distance from each other, so that the heat energy generated by the first light source and the second light source when working has a considerable space to dissipate, so that only a small heat dissipation system is required to provide the heat dissipation performance required by the first light source and the second light source. In addition, the replaceable focusing element and the light guide element are separated and made independently of each other, which is beneficial to improve the lighting brightness, adjust the size of the light spot, improve the dispersion, shorten the production cycle, and reduce the difficulty of injection molding in the process.

[0032] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the above disclosed methods and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belongs to the scope of the technical solution of the present invention. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name the name of the element or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of elements.

Claims

1. A light guide system with dual light sources, characterized in that: include: A condenser lens having a first light incident side and a first light emitting side opposite to the first light incident side; a light reflecting element, adjacent to the first light incident side; a light guide element, disposed between the light reflecting element and the condenser lens and adjacent to the first light incident side, the light guide element having a light emitting end, a light incident end, and a total internal reflection portion, the light emitting end being adjacent to the first light incident side and located between the first light incident side and the light reflecting element, the light incident end and the total internal reflection portion being located at a bottom side of the light reflecting element, and the total internal reflection portion being connected between the light incident end and the light emitting end; a replaceable light-concentrating element, disposed on a bottom side of the light-incident end, having a second light-incident side and a second light-emitting side opposite to the second light-incident side, the second light-emitting side facing the light-incident end, and a gap formed between the second light-emitting side and the light-incident end; a first light source disposed on a bottom side of the light reflecting element; and a second light source, disposed at the second light incident side; The replaceable focusing element is the cup lamp type optical element, the second light emitting side includes a central light emitting portion and several side light emitting portions, the side light emitting portions are arranged in sequence on both sides of the central light emitting portion, each of the side light emitting portions has an inner end, an outer end and a surface, the distance between the inner end and the central light emitting portion is smaller than the distance between the outer end and the central light emitting portion, the surface is obliquely connected between the inner end and the outer end, and the thickness of the inner end is greater than the thickness of the outer end, the second light incident side includes several light incident columns, each of the light incident columns has a top end, a bottom end and a light incident concave portion, the top ends of the light incident columns are respectively connected to the central light emitting portion and the side light emitting portions, the bottom end is opposite to the top end, each of the light incident columns has a light incident concave portion, and the light incident concave portion is arranged at the bottom end and extends toward the top end.

2. The light guide system with dual light sources according to claim 1, characterized in that: The average thickness of each of the side light emitting portions is greater than the average thickness of the central light emitting portion.

3. The light guide system with dual light sources according to claim 1, characterized in that: The replaceable light-focusing element and the light-guiding element are made of different materials.

4. The light guide system with dual light sources according to claim 1, characterized in that: The replaceable focusing element is a polycarbonate focusing element, a polymethyl methacrylate focusing element or a siloxane polymer focusing element, and the light guide element is a polycarbonate light guide element, a polymethyl methacrylate light guide element or a siloxane polymer light guide element.

5. The light guide system with dual light sources as claimed in claim 1, characterized in that: The first light source is suitable for providing a first light ray, the light reflecting element, the light emitting end and the focusing lens are arranged on the transmission path of the first light ray, the light reflecting element is suitable for reflecting the first light ray, the first light ray reflected by the light reflecting element advances toward the light emitting end, passes through the light emitting end, enters the focusing lens from the first light incident side and leaves the focusing lens from the first light exiting side, thereby forming a first light pattern; the second light source is suitable for providing a second light ray, the replaceable focusing element, the light incident end, the total internal reflection portion, the light emitting end and the focusing lens are arranged on the transmission path of the second light ray, the replaceable focusing element is suitable for converging the second light ray, the converged second light ray passes through the light incident end, the total internal reflection portion and the light emitting end, enters the focusing lens from the first light incident side and leaves the focusing lens from the first light exiting side, thereby forming a second light pattern.

6. The light guide system with dual light sources as claimed in claim 1, characterized in that: The light emitting end has an end surface and a top surface, the end surface faces the focusing lens and is an arc-shaped concave surface, the top surface connects the end surface and the total internal reflection part, and the top surface has two opposite parts, and an inclined surface is formed between the two parts.

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