A light emitting module and a lighting device

Abstract

The utility model discloses a kind of light-emitting module and lighting device, including support, at least one light-emitting chip and polarizing lens installed in support;Polarizing lens is connected to support and covers light-emitting chip, including the first polarizing part and the second polarizing part connected, first polarizing part and the second polarizing part are located in the opposite sides of the same surface of support, the outer surface of second polarizing part is set out relative to first polarizing part, second polarizing part has total reflection surface towards first polarizing part, first polarizing part is used to refract part light emitted by light-emitting chip and shoot to the side of the preset of support, total reflection surface is used to total reflection for light that shoots to total reflection surface.Light-emitting chip emits light and is scattered to the mode of outside, the first polarizing part and the second polarizing part of the polarizing lens of the present application can adjust part light and shoot to the side of the preset of support, it is favorable to make full use of light, reduce the risk of waste light emitted by light-emitting chip.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a light-emitting module and a lighting device. Background Technology

[0002] Light-emitting modules are common electronic devices used to assist users in illuminating their surroundings or creating ambiance, such as LED strips on the back of monitors, effect lights, and wall washer lights. However, common light-emitting modules typically emit light directly outwards, with some light hitting the work surface while others illuminate other areas, resulting in wasted light. Utility Model Content

[0003] The technical problem solved by this utility model embodiment is addressed by the following technical solution: On one hand, this application provides a light-emitting module, including a bracket, at least one light-emitting chip, and a polarizing lens, having a first surface and a second surface arranged adjacent to each other, the first surface being provided with connection pins; at least one light-emitting chip is mounted on the bracket and located on one side of the second surface, and the light-emitting end of the light-emitting chip is arranged in a direction away from the second surface; the polarizing lens is connected to the second surface and covers the light-emitting chip, the polarizing lens including a first polarizing part and a second polarizing part connected to each other, the first polarizing part and the second polarizing part being located on opposite sides of the same surface of the bracket, the second polarizing part being convex relative to the outer surface of the first polarizing part, wherein the second polarizing part has a total reflection surface facing the first polarizing part, the first polarizing part being used to refract part of the light emitted by the light-emitting chip and direct it toward a predetermined side of the bracket, and the total reflection surface being used to perform total reflection of the light directed toward the total reflection surface.

[0004] In some embodiments, the outer surface of the first polarizing part is an arc surface, and the second polarizing part has a curved surface away from the support. The curved surface includes a first arc segment, a connecting segment, and a second arc segment connected to each other. The two ends of the connecting segment are respectively connected to the first arc segment and the second arc segment. The second arc segment is connected to the arc surface. The radius of curvature of the first arc segment is defined as R1, the radius of curvature of the arc surface is defined as R2, and the radius of curvature of the connecting segment is defined as R3, satisfying R1≤R3<R2.

[0005] In some embodiments, there are at least two light-emitting chips, and the at least two light-emitting chips are spaced apart on the same side of the support surface, and the edges of the at least two light-emitting chips are flush along the arrangement direction of the at least two light-emitting chips.

[0006] In some embodiments, the bracket includes a first surface and a second surface arranged adjacent to each other. The first surface is provided with a connection pin. A first polarizing portion and a second polarizing portion are distributed along a direction perpendicular to the first surface. The second polarizing portion is arranged closer to the connection pin relative to the first polarizing portion, so that the light irradiated onto the total reflection surface is emitted in a direction away from the connection pin.

[0007] In some embodiments, along a direction perpendicular to the first surface, the distance between the central axis of the light-emitting chip and the first surface is d1, and the distance between the central axis of the support and the first surface is d2, satisfying d1 < d2.

[0008] In some embodiments, the light-emitting module further includes a light-transmitting colloid disposed between the bracket and the polarizing lens, the light-transmitting colloid connecting the polarizing lens and the bracket respectively, and covering the light-emitting chip. In some embodiments, the bracket has a groove, at least one light-emitting chip is disposed at the bottom of the groove, and the light-transmitting colloid fills the groove; wherein, the sidewall of the groove is inclined relative to the bottom surface of the groove, and the area of ​​the opening of the groove is larger than the area of ​​the bottom of the groove.

[0009] In some embodiments, the second polarizing portion has an outer wall surface facing away from the first polarizing portion, and the outer wall surface is provided with a plurality of spaced protrusions.

[0010] In some embodiments, a plurality of protrusions are spaced apart on the outer wall surface along a direction parallel to the second surface.

[0011] On the other hand, this application also provides a lighting device, including at least one of the above-mentioned light-emitting modules and a circuit board, wherein the light-emitting module is electrically connected to the circuit board.

[0012] The beneficial effects of this utility model embodiment are as follows: The light-emitting module provided in this application embodiment includes a bracket, at least one light-emitting chip, and a polarizing lens. The bracket has a first surface and a second surface arranged adjacent to each other, and the first surface is provided with connection pins. At least one light-emitting chip is installed on one side of the second surface of the bracket, and the light-emitting end of the light-emitting chip is arranged in a direction away from the second surface. The polarizing lens is connected to the bracket and covers the light-emitting chip. The polarizing lens is disposed on the second surface of the bracket and includes a first polarizing part and a second polarizing part connected to each other. The first polarizing part and the second polarizing part are located on opposite sides of the same surface of the bracket. The second polarizing part is convex relative to the outer surface of the first polarizing part. The second polarizing part has a total reflection surface facing the first polarizing part. The first polarizing part is used to refract part of the light emitted by the light-emitting chip and direct it toward a predetermined side of the bracket. The total reflection surface is used to perform total reflection of the light directed toward the total reflection surface. In this application, the connection pins of the light-emitting module, the light-emitting chip, and the polarizing lens are respectively disposed on the first and second surfaces adjacent to the bracket. Thus, the light-emitting surface of the light-emitting module and the connection pins are disposed adjacent to each other, enabling the light-emitting module to emit light from the side. The light-emitting module is provided with a polarizing lens, the first polarizing part of which can refract part of the light emitted by the light-emitting chip and direct it to a predetermined side of the bracket. Moreover, the total reflection surface of the second polarizing part can perform total reflection on part of the light emitted by the light-emitting chip and then refract it to the predetermined side of the bracket. This is beneficial for making full use of the light emitted by the light-emitting chip and reducing the risk of wasting the light emitted by the light-emitting chip. Attached Figure Description

[0013] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0014] Figure 1 This is a schematic diagram of the structure of a light-emitting module according to one embodiment of this application; Figure 2 yes Figure 1 Exploded view of the structure; Figure 3 yes Figure 1 A cross-sectional view of the light-emitting module; Figure 4 This is a side view of the top lens of the mold; Figure 5 This is a schematic diagram of the structure of the light-emitting module in another embodiment of this application; In the diagram: 1. Light-emitting module; 2. Support; 3. Light-emitting chip; 4. Polarizing lens; 5. Transmitting colloid; 2a. First surface; 2b. Second surface; 21. Connecting pin; 22. Groove; 221. Side wall; 222. Bottom surface; 41. First polarizing part; 42. Second polarizing part; 41a. Outer surface; 42a. Curved surface; 42b. Total reflection surface; 42c. Outer wall surface; 401. Protrusion; 421. First arc segment; 422. Connecting segment; 423. Second arc segment; 51. First filling surface; 52. Second filling surface; 53. Enclosing wall surface. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0017] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] like Figure 1-3As shown, one embodiment of this application provides a light-emitting module 1, including a bracket 2, at least one light-emitting chip 3, and a polarizing lens 4. The bracket 2 has a first surface 2a and a second surface 2b disposed adjacent to each other, and the first surface 2a is provided with connection pins 21. At least one light-emitting chip 3 is disposed between the bracket 2 and the polarizing lens 4, and is mounted on the side of the second surface 2b of the bracket 2, with the light-emitting end of each chip 3 facing away from the bracket 2. The polarizing lens 4 is connected to the bracket 2 and covers the light-emitting chip 3. The polarizing lens 4 is used to adjust the light emitted by the at least one light-emitting chip 3 before it is emitted along a preset path, so that more of the light emitted by the light-emitting chip 3 is directed towards a preset side of the bracket 2.

[0019] The polarizing lens 4 includes a first polarizing part 41 and a second polarizing part 42 connected to each other. The first polarizing part 41 and the second polarizing part 42 are located on opposite sides of the same surface of the bracket 2. The second polarizing part 42 protrudes from the outer surface 41a of the first polarizing part 41. The second polarizing part 42 has a total reflection surface 42b facing the first polarizing part 41. The first polarizing part 41 is used to refract part of the light emitted by the light-emitting chip 3 and direct it to a predetermined side of the bracket 2. The total reflection surface 42b is used to perform total reflection of the light directed to the total reflection surface 42b.

[0020] Thus, compared to the way the light emitted by the light-emitting chip 3 is naturally scattered to the outside, the light-emitting module 1 of this application is provided with a polarizing lens 4. Its first polarizing part 41 can refract part of the light emitted by the light-emitting chip 3 and direct it to a predetermined side of the bracket 2. Moreover, the total reflection surface 42b of the second polarizing part 42 can perform total reflection on part of the light emitted by the light-emitting chip 3 directed to the other side of the bracket 2 and then refract it to the predetermined side of the bracket 2. This is beneficial to make full use of the light emitted by the light-emitting chip 3 and reduce the risk of wasting the light emitted by the light-emitting chip 3.

[0021] Understandably, the polarizing lens 4 of the above-described structure can adjust some of the light emitted by the light-emitting chip 3 and direct more of it toward a predetermined side of the bracket 2, which is beneficial to enhancing the lighting effect on the predetermined side of the bracket 2. To facilitate understanding of the significance of the polarizing lens 4 of the light-emitting module 1 adjusting the light emitted by the light-emitting chip 3 in this embodiment, the following explanation will be based on the example of a light strip on the back of a display. However, this does not mean that the light-emitting module 1 is only applicable to light strips on the back of a display; it can also be applied to other electronic products.

[0022] Generally, the light strip on the back of a monitor is used to create ambiance. It has multiple existing light-emitting modules (such as LED beads) that emit light in the front, meaning that the light-emitting surface of the existing light-emitting modules is opposite to the pins of the light-emitting modules. When the existing light-emitting modules are soldered to the circuit board through the pins, the existing light-emitting modules emit light in the front relative to the circuit board. At this time, in addition to the light that shines towards the edge of the monitor, some light also shines on the light-receiving surface on the back of the monitor (such as a video wall). Some of the light is reflected on the light-receiving surface and then shines out along the edge of the monitor, but some of the light is reflected back to the back of the monitor. Therefore, this part of the reflected light is blocked, which causes light waste and reduces the brightness of the light-receiving surface, resulting in a poor lighting ambiance.

[0023] In this embodiment of the application, taking the light-emitting module 1 used in the back of the display as an example, since the connecting pin 21, the light-emitting chip 3, and the polarizing lens 4 are respectively disposed on the first surface 2a and the second surface 2b adjacent to the bracket 2, when the connecting pin 21 is soldered on the circuit board, the light-emitting chip 3 emits light from the side relative to the circuit board. At this time, before passing through the polarizing lens 4, the light-emitting surface of the light-emitting chip 3 and the light-receiving surface are perpendicular to each other. As a result, the light emitted by the light-emitting chip 3 is deflected under the guidance of the polarizing lens 4, so that most of the deflected light can be reflected on the light-receiving surface and emitted along the edge of the display without being blocked by the display, thereby reducing light loss, making full use of the light emitted by the light-emitting chip 3, improving the brightness of the lighting, and helping to create a lighting atmosphere.

[0024] It should be understood that when the light emitted by the light-emitting chip 3 strikes the total internal reflection surface 42b of the second polarizing section 42, according to the phenomenon of total internal reflection, when light enters a medium with a lower refractive index from a medium with a higher refractive index, if the angle of incidence is greater than the critical angle, the refracted light will disappear, and all the incident light will be reflected and will not enter the medium with a lower refractive index. That is, some of the light rays that strike the total internal reflection surface 42b of the second polarizing section 42, if the condition that the angle of incidence is greater than the critical angle is not met, will be refracted to the outside. However, if the condition that the angle of incidence is greater than the critical angle is met, the light rays will be reflected to the side where the first polarizing section 41 is located, so that these light rays are emitted to one side, which is beneficial to make full use of the light emitted by the light-emitting chip 3.

[0025] The light-emitting module 1 with the above structure has a larger incident angle for the portion of light that illuminates the second polarizing part 42 protruding from the outer surface 41a of the first polarizing part 41, so that the incident angle is greater than the critical angle and the condition of total internal reflection is met, and the light is reflected toward the side where the first polarizing part 41 is located. It should be noted that a circuit board (not shown in the figure) is embedded inside the bracket 2, which is electrically connected to the light-emitting chip 3 and the connecting pin 21. The light-emitting chip 3 is indirectly electrically connected to the connecting pin 21 through the circuit board. In use, the connecting pin 21 is soldered to the circuit board of the electrical device, so that the light-emitting chip 3 can be indirectly connected to the circuit. Thus, the operation of the light-emitting chip 3 can be controlled by the circuit inside the circuit board.

[0026] The first polarizing part 41, which is away from the outer surface 41a of the bracket 2 (that is, the surface from which the light is emitted), can be an arc surface, a sawtooth surface, or any other shape, as long as it can adjust part of the light emitted by the light-emitting chip 3 to be emitted toward a preset side of the bracket 2.

[0027] In some embodiments, the outer surface 41 of the first polarizing section 41 facing away from the bracket 2 is a sawtooth surface, that is, it is composed of multiple inclined sections. The inclined sections can deflect the emitted light to a predetermined side of the bracket 2. In the polarization design, the angle between the emitted light from the inclined section and the optical axis of the first polarizing section 41 is smaller than the angle between the emitted light from the sawtooth surface and the optical axis of the first polarizing section 41. This allows more light emitted from the sawtooth surface to be directed toward a predetermined side of the bracket 2, thereby further improving the utilization rate of the light emitted by the light-emitting chip 3.

[0028] In some embodiments, such as Figure 3 and Figure 4 As shown, the first polarizing part 41 is an arc surface away from the outer surface 41a of the bracket 2, and the second polarizing part 42 has a curved surface 42a away from the bracket 2. The curved surface 42a includes a first arc segment 421, a connecting segment 422 and a second arc segment 423 connected to each other. The two ends of the connecting segment 422 are respectively connected to the first arc segment 421 and the second arc segment 423. The second arc segment 423 is connected to the arc surface.

[0029] Define the radius of curvature of the first arc segment 421 as R1, the radius of curvature of the arc surface as R2, and the radius of curvature of the second arc segment 423 as R3, satisfying R1≤R3<R2. That is, the curvature K1 of the first arc segment 421, the curvature K2 of the arc surface, and the curvature K3 of the second arc segment 423 satisfy K1≥K3>K2.

[0030] In this way, the arc surface can have a larger distribution area, so that more of the light emitted by the light-emitting chip 3 will be refracted towards the side of the bracket 2 after shining on the arc surface. At the same time, it can ensure that the area where the first arc segment 421 is located is small, so that the light shining on the second polarizing part 42 can meet the condition of total internal reflection more and be refracted towards the side closer to the first polarizing part 41, which is conducive to making full use of the light emitted by the light-emitting chip 3.

[0031] For ease of understanding, Figure 3 The dashed line in the diagram illustrates how the direction of light emitted by the light-emitting chip 3 changes after passing through the polarizing lens 4 in one scenario. However, this does not mean that the light emitted by the light-emitting chip 3 is emitted into the outside world in this manner, as it is affected by uncontrollable factors such as manufacturing precision and installation precision. Figure 3 This is merely a schematic diagram illustrating the approximate adjustment effect of the polarizing lens 4 on the light emitted by the light-emitting chip 3.

[0032] In some embodiments, the bracket 2 has a first surface 2a and a second surface 2b disposed adjacent to each other, and the first surface 2a is provided with a connection pin 21. The light-emitting chip 3 and the polarizing lens 4 are both mounted on the second surface 2b. The first polarizing part 41 and the second polarizing part 42 are distributed along a direction X perpendicular to the first surface 2a, and the second polarizing part 42 is disposed closer to the connection pin 21 than the first polarizing part 41, so that the light illuminating the total reflection surface 42b is emitted in a direction away from the connection pin 21.

[0033] In some embodiments, such as Figure 3 As shown, along the direction X perpendicular to the first surface 2a, the distance between the central axis L1 of the light-emitting chip 3 and the first surface 2a is d1, and the distance between the central axis L2 of the bracket 2 and the first surface 2a is d2, satisfying d1 < d2. That is, the light-emitting chip 3 is eccentrically positioned relative to the central axis of the bracket 2 and towards the side closer to the connection pin 21. This allows more light emitted from the light-emitting chip 3 to pass through the outer surface 41a of the first polarizing part 41 and be emitted towards the preset side of the bracket 2. At the same time, it can also increase the incident angle of the light emitted by the light-emitting chip 3 illuminating the second polarizing part 42, so that more light illuminating the second polarizing part 42 can meet the condition of total internal reflection and be reflected towards the preset side of the bracket 2, which is beneficial for the preset side of the bracket 2 to have a better light-emitting effect.

[0034] In some embodiments, there are at least two light-emitting chips 3, and these two chips 3 are spaced apart and disposed on the same side of the support 2, i.e., distributed on the second surface 2b. The edges of the two chips 3 are flush along the arrangement direction, meaning that the distances between the multiple chips 3 and the same reference surface are equal. In this embodiment, the minimum distance between each chip 3 and the first surface 2a is equal, and they are spaced apart along a straight line parallel to the first surface 2a. Therefore, compared to arbitrarily arranging the two chips 3, having the two chips 3 equidistant from the second polarizing section 42 in the direction X perpendicular to the first surface 2a allows some of the light emitted by the multiple chips 3 to be emitted towards the side where the first polarizing section 41 is located under the action of the second polarizing section 42, which is more conducive to improving the side-emitting effect.

[0035] Understandably, the connection between the polarizing lens 4 and the bracket 2 can be achieved through adhesive, double-sided tape, or other adhesive materials. Alternatively, it can be secured using a snap-fit ​​structure combining clips and slots, or other methods as needed, as long as the connection between the two is achieved. Similarly, the connection between the light-emitting chip 3 and the bracket 2 can be achieved through welding, using conductive adhesive, or other methods, depending on the specific requirements.

[0036] In some embodiments, please combine Figure 2 and Figure 3 As shown, the light-emitting module 1 also includes a light-transmitting colloid 5, which is disposed between the bracket 2 and the polarizing lens 4. The light-transmitting colloid 5 connects the polarizing lens 4 and the bracket 2 respectively, and covers the light-emitting chip 3. The light-transmitting colloid 5 ensures that the light emitted by the light-emitting chip 3 can pass through normally. In this way, the light-transmitting colloid 5 prevents the light-emitting chip 3 from directly contacting the polarizing lens 4, thus protecting the light-emitting chip 3 and also reinforcing the light-emitting chip 3 onto the bracket 2.

[0037] It should be noted that the material used for the light-transmitting colloid 5 can be epoxy resin, silicone, or other light-transmitting materials. Similarly, the material used for the polarizing lens 4 can be epoxy resin, silicone, or other light-transmitting materials. Furthermore, in order to enable the light emitted by the light-emitting chip 3 to better transmit through the light-transmitting colloid 5 or the polarizing lens 4, the light-transmitting material used for the light-transmitting colloid 5 can be doped with diffusion particles, so as to mix the light emitted by multiple light-emitting chips 3 before directing it towards the polarizing lens 4.

[0038] In some embodiments, such as Figure 2 As shown, the bracket 2 has a groove 22 recessed along the direction Y perpendicular to the second surface 2b. At least one light-emitting chip 3 is disposed at the bottom of the groove 22, and the light-transmitting colloid 5 is filled in the groove 22. In this way, the light-transmitting colloid 5 can be housed by the groove 22, reducing the space occupied by the light-transmitting colloid 5, thereby helping to reduce the overall thickness of the light-emitting module 1 in the direction Y perpendicular to the second surface 2b.

[0039] In some embodiments, such as Figure 2As shown, the sidewall 221 of the groove 22 is inclined relative to the bottom surface 222 of the groove 22, and along the direction Y perpendicular to the second surface 2b and away from the groove 22, the area of ​​the opening of the groove 22 is larger than the area of ​​the bottom of the groove 22. Thus, by utilizing the inclined sidewall 221 of the groove 22, light emitted from the side of the light-emitting chip 3 and directed towards the inner wall of the groove 22 can be reflected, allowing more light to pass through the polarizing lens 4 and be emitted, which is beneficial for further utilization of the light emitted by the light-emitting chip 3. Understandably, the shape of the groove 22 can be a circular trumpet shape or a non-circular trumpet shape (such as a square shape), which can be set according to the needs.

[0040] In some embodiments, such as Figure 2 As shown, the light-transmitting colloid 5 includes a first filling surface 51, a second filling surface 52, and an enclosing wall surface 53. The two ends of the enclosing wall surface 53 are respectively connected to the first filling surface 51 and the second filling surface 52. The first filling surface 51 and the second filling surface 52 are arranged opposite each other in a direction Y perpendicular to the second surface 2b, and the enclosing wall surface 53 is inclined relative to the first filling surface 51. The first filling surface 51 abuts against the bottom of the groove 22, and the enclosing wall surface 53 abuts against the side wall surface 221. The second filling surface 52 is connected to the polarizing lens 4. That is, the shape of the light-transmitting colloid 5 is similar to the shape of the groove 22, which facilitates the embedding of the light-transmitting colloid 5 into the groove 22. At the same time, the inclined arrangement of the enclosing wall surface 53 facilitates demolding during production.

[0041] In some embodiments, such as Figure 5 As shown, the second polarizing part 42 has an outer wall surface 42c facing away from the first polarizing part 41. The outer wall surface 42c is provided with a number of spaced protrusions 401. This is beneficial because when some of the light emitted by the light-emitting chip 3 is emitted from the second polarizing part 42 without meeting the condition of total internal reflection, some of the light can be reflected back toward the side where the first polarizing part 41 is located under the action of the protrusions 401 on the outer wall surface 42c. This is beneficial for further utilizing the light emitted by the light-emitting chip 3 and is more conducive to creating a lighting atmosphere.

[0042] Understandably, the arrangement of the spaced protrusions 401 on the outer wall surface 42c can be along a direction parallel to the second surface 2b (i.e., Figure 5 The direction Z) shown is set at intervals, or other methods can be used to arrange them at intervals, as long as it can achieve the reflection of part of the light emitted from the second polarizing part 42.

[0043] The protrusion 401 can be a serrated protrusion, an arc-shaped protrusion, or any other shape, as long as it can reflect the light shone from the light-emitting chip 3 onto the outer surface 41a to a predetermined side of the bracket 2.

[0044] The light-emitting module 1 provided in this embodiment includes a bracket 2, at least one light-emitting chip 3, and a polarizing lens 4. The bracket 2 has a first surface 2a and a second surface 2b arranged adjacent to each other. The first surface 2a is provided with connection pins 21. At least one light-emitting chip 3 is mounted on one side of the second surface 2b of the bracket 2, and the light-emitting end of the light-emitting chip 3 is arranged in a direction away from the second surface 2b. The polarizing lens 4 is connected to the bracket 2 and covers the light-emitting chip 3. The polarizing lens 4 includes a first polarizing part 41 and a second polarizing part 42 connected to each other. The first polarizing part 41 and the second polarizing part 42 are located on opposite sides of the same surface of the bracket 2. The second polarizing part 42 protrudes from the outer surface 41a of the first polarizing part 41. The second polarizing part 42 has a total reflection surface 42b facing the first polarizing part 41. The first polarizing part 41 is used to refract part of the light emitted by the light-emitting chip 3 and direct it toward a predetermined side of the bracket 2. The total reflection surface 42b is used to perform total internal reflection of the light directed toward the total reflection surface 42b. Compared to the way light emitted by the light-emitting chip 3 is naturally scattered to the outside, the light-emitting module 1 of this application is provided with a polarizing lens 4. Its first polarizing part 41 can refract part of the light emitted by the light-emitting chip 3 and direct it to a predetermined side of the bracket 2. Moreover, the total reflection surface 42b of the second polarizing part 42 can perform total reflection on part of the light emitted by the light-emitting chip 3 directed to the other side of the bracket 2 and then refract it to the predetermined side of the bracket 2. This is beneficial to make full use of the light emitted by the light-emitting chip 3 and reduce the risk of wasting the light emitted by the light-emitting chip 3.

[0045] Another embodiment of this application provides a lighting device including at least one light-emitting module 1 as described in the above embodiments and a circuit board, wherein the light-emitting module 1 is electrically connected to the circuit board.

[0046] When there are two or more light-emitting modules 1, the multiple light-emitting modules 1 are arranged at intervals along the length of the circuit board so that the multiple light-emitting modules 1 can emit light together to create a better lighting atmosphere.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A light-emitting module, characterized in that, include: The bracket has a first surface and a second surface arranged adjacent to each other, and the first surface is provided with connection pins; At least one light-emitting chip is mounted on the bracket and located on one side of the second surface, and the light-emitting end of the light-emitting chip is arranged in a direction away from the second surface; A polarizing lens is connected to the second surface and covers the light-emitting chip. The polarizing lens includes a first polarizing part and a second polarizing part connected to each other. The first polarizing part and the second polarizing part are located on opposite sides of the same surface of the bracket. The second polarizing part protrudes relative to the outer surface of the first polarizing part. The second polarizing part has a total reflection surface facing the first polarizing part. The first polarizing part is used to refract part of the light emitted by the light-emitting chip and direct it to a predetermined side of the bracket. The total reflection surface is used to perform total reflection of the light directed towards the total reflection surface.

2. The light-emitting module according to claim 1, characterized in that, The outer surface of the first polarizing part is an arc surface, and the second polarizing part has a curved surface away from the bracket. The curved surface includes a first arc segment, a connecting segment, and a second arc segment connected together. The two ends of the connecting segment are respectively connected to the first arc segment and the second arc segment. The second arc segment is connected to the arc surface. The radius of curvature of the first arc segment is defined as R1, the radius of curvature of the arc surface is defined as R2, and the radius of curvature of the connecting segment is defined as R3, satisfying R1≤R3<R2.

3. The light-emitting module according to claim 1, characterized in that, There are at least two light-emitting chips, and the at least two light-emitting chips are spaced apart on the same side of the support surface, and the edges of the at least two light-emitting chips are flush with each other along the arrangement direction of the at least two light-emitting chips.

4. The light-emitting module according to claim 1, characterized in that, The first polarizing portion and the second polarizing portion are distributed along a direction perpendicular to the first surface, and the second polarizing portion is disposed closer to the connection pin relative to the first polarizing portion, so that the light illuminating the total reflection surface is emitted in a direction away from the connection pin.

5. The light-emitting module according to claim 4, characterized in that, Along a direction perpendicular to the first surface, the distance between the central axis of the light-emitting chip and the first surface is d1, and the distance between the central axis of the bracket and the first surface is d2, satisfying d1 < d2.

6. The light-emitting module according to claim 1, characterized in that, The light-emitting module also includes a light-transmitting colloid, which is disposed between the bracket and the polarizing lens. The light-transmitting colloid connects the polarizing lens and the bracket respectively, and covers the light-emitting chip.

7. The light-emitting module according to claim 6, characterized in that, The bracket is provided with a groove, at least one of the light-emitting chips is disposed at the bottom of the groove, and the light-transmitting colloid fills the groove; The sidewall of the groove is inclined relative to the bottom surface of the groove, and the area of ​​the opening of the groove is larger than the area of ​​the bottom of the groove.

8. The light-emitting module according to any one of claims 1-7, characterized in that, The second polarizing part has an outer wall surface that is opposite to the first polarizing part, and the outer wall surface is provided with a plurality of spaced protrusions.

9. The light-emitting module according to claim 8, characterized in that, Several of the protrusions are spaced apart on the outer wall surface along a direction parallel to the second surface.

10. A lighting device, characterized in that, It includes at least one light-emitting module as described in any one of claims 1-9 and a circuit board, wherein the light-emitting module is electrically connected to the circuit board.

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