Lamp

Abstract

The invention relates to the technical field of illumination, and discloses a lamp which comprises a light source module, a light-transmitting cover and a light guide module. The light source module is provided with a light emitting face, illumination light emitted by the light source module comprises a first sub-beam and a second sub-beam, and the first sub-beam and the second sub-beam are located on the two sides of the light emitting normal of the light emitting face respectively. The light-transmitting cover comprises a first light-transmitting part and a second light-transmitting part, and the distance between the first light-transmitting part and the light source module is larger than the distance between the second light-transmitting part and the light source module. The light guide module is arranged between the light source module and the light-transmitting cover and is used for guiding the illumination light to the light-transmitting cover; the emergent angle of the first sub-light beam emitted by the light guide module is smaller than the emergent angle of the second sub-light beam emitted by the light guide module. According to the light-transmitting cover, under the action of the light guide module, the illumination brightness of the different light-transmitting areas can be roughly equal, so that the overall illumination brightness of the light-transmitting cover can be more uniform, and it is guaranteed that the lamp has the good illumination effect.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and more specifically, to a lamp. Background Art

[0002] In existing lamps (e.g., wall lamps, wall washers), in order to make the overall structure of the lamp more compact, the light-transmitting cover (e.g., milky white semi-transparent cover) inside the lamp usually adopts an irregular surface design, which may cause the problem of inconsistent distances between the lamp beads inside the lamp and different areas on the light-transmitting cover.

[0003] Specifically, the area of ​​the light cover closer to the lamp beads has higher lighting brightness, while the area of ​​the light cover farther from the lamp beads has lower lighting brightness, which causes the light emitted from the light cover to have uneven lighting brightness, thereby affecting the lighting effect of the lamp. Summary of the invention

[0004] The embodiment of the present application provides a lamp, which includes a light source module, a light-transmitting cover and a light-guiding module. The light source module is used to emit illumination light, and the light source module has a light-emitting surface; the illumination light includes a first sub-beam and a second sub-beam, and the first sub-beam and the second sub-beam are respectively located on both sides of the light-emitting normal line of the light-emitting surface. The light-transmitting cover is arranged relative to the light-emitting surface; the light-transmitting cover includes a first light-transmitting portion and a second light-transmitting portion, and the first light-transmitting portion and the second light-transmitting portion are respectively located on opposite sides of the light-emitting normal line, and the distance between the first light-transmitting portion and the light source module is greater than the distance between the second light-transmitting portion and the light source module. The light-guiding module is arranged between the light source module and the light-transmitting cover, and is located on the light path where the illumination light is located, and is used to guide the illumination light to the light-transmitting cover; the first sub-beam is guided to the first light-transmitting portion via the light-guiding module, and the second sub-beam is guided to the second light-transmitting portion via the light-guiding module; the emission angle of the first sub-beam emitted via the light-guiding module is smaller than the emission angle of the second sub-beam emitted via the light-guiding module.

[0005] In the lamp provided in the embodiment of the present application, a light guiding module is provided on the optical path where the illumination light is located between the light source module and the light-transmitting cover. On the one hand, the light guiding module is used to guide the first sub-beam to the first light-transmitting portion and the second sub-beam to the second light-transmitting portion, thereby playing the role of redistributing the illumination light and improving the energy utilization efficiency of the illumination light.

[0006] On the other hand, the light guiding module can also adjust the emission angles of the first sub-beam and the second sub-beam. Specifically, the emission angle of the first sub-beam emitted through the light guiding module is smaller than the emission angle of the second sub-beam emitted through the light guiding module. Since the distance between the first light-transmitting portion and the light source module is greater than the distance between the second light-transmitting portion and the light source module, when the emission angle of the first sub-beam is relatively small, the energy of the first sub-beam incident to the first light-transmitting portion can be relatively concentrated to increase the illumination brightness of the first light-transmitting portion; and when the emission angle of the second sub-beam is relatively large, the energy of the second sub-beam incident to the second light-transmitting portion can be relatively dispersed to reduce the illumination brightness of the second light-transmitting portion.

[0007] Therefore, under the action of the light guiding module, the illumination brightness of different light-transmitting areas of the light-transmitting cover in the embodiment of the present application can be roughly equal, so that the overall illumination brightness of the light-transmitting cover can be more uniform, ensuring that the lamp has a better lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 It is a cross-sectional view of the lamp provided in an embodiment of the present application.

[0010] Figure 2 yes Figure 1 A partial schematic diagram of the lamp shown.

[0011] Figure 3 yes Figure 2 A schematic diagram of the optical path structure of the lamp shown.

[0012] Figure 4 yes Figure 2 A schematic diagram of the structure of a light-transmitting cover in the lamp shown.

[0013] Figure 5 yes Figure 2 Another schematic diagram of the structure of the light-transmitting cover in the lamp is shown.

[0014] Figure 6 yes Figure 3 Schematic diagram of the structure of the light guiding module in the optical path shown.

[0015] Figure 7 yes Figure 2 Schematic diagram of another light path structure of the lamp shown.

[0016] Figure 8 yes Figure 7 Schematic diagram of the structure of the light guiding module in the optical path shown. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0018] The embodiment of the present application provides a lamp 100 for providing lighting for the space it is in. Specifically, the lamp 100 may be a wall lamp, a wall washer, a table lamp, and the like.

[0019] See also Figures 1 to 3 , the lamp 100 may include a light source module 20, a light-transmitting cover 30 and a light guiding module 40. Among them, the light source module 20 is used to emit an illumination light L. The light source module 20 has a light-emitting surface 210, and the illumination light L is emitted through the light-emitting surface 210. Specifically, the illumination light L may include a first sub-beam L1 and a second sub-beam L2, and the first sub-beam L1 and the second sub-beam L2 are respectively located on both sides of a light-emitting normal line M of the light-emitting surface 210. The "light-emitting normal line M" here can be understood as a straight line where the main optical axis of the illumination light L is located, which is perpendicular to the light-emitting surface 210 and passes through the geometric center of the light-emitting surface 210. For example, the outer contour of the light-emitting surface 210 may be roughly rectangular, and the center point of the rectangle is the "geometric center of the light-emitting surface 210".

[0020] The light-transmitting cover 30 is arranged with a relative spacing from the light-emitting surface 210, and the light-transmitting cover 30 may include a first light-transmitting portion 320 and a second light-transmitting portion 340, the first light-transmitting portion 320 and the second light-transmitting portion 340 are respectively located on opposite sides of the light-emitting normal line M, and the distance between the first light-transmitting portion 320 and the light source module 20 is greater than the distance between the second light-transmitting portion 340 and the light source module 20. Here, "the distance between XX and the light source module 20" refers to the straight-line distance between XX and the light source module 20 in the direction of the light-emitting normal line M.

[0021] The light guiding module 40 is disposed between the light source module 20 and the light-transmitting cover 30 and is located on the light path of the illumination light L, and is used to guide the illumination light L to the light-transmitting cover 30. The first sub-beam L1 is guided to the first light-transmitting portion 320 via the light guiding module 40, and the second sub-beam L2 is guided to the second light-transmitting portion 340 via the light guiding module 40.

[0022] On the one hand, the light guiding module 40 is used to guide the first sub-beam L1 to the first light-transmitting portion 320 and guide the second sub-beam L2 to the second light-transmitting portion 340, so as to redistribute the illumination light L and improve the energy utilization efficiency of the illumination light L.

[0023] It should be noted here that the illumination light L in this embodiment can be regarded as spherical light, which includes some large-angle light beams (for example, light beams with an exit angle greater than 50 degrees at the light exit surface 210). If this part of the light beam is directly emitted, it will deviate from the area where the light-transmitting cover 30 is located, resulting in energy waste. Therefore, in this embodiment, the light guide module 40 is set to guide the above light beams (that is, the first sub-beam L1 and the second sub-beam L2) to change the propagation direction of the light beam, so that the large-angle light beam generated by the light source module 20 can also be incident on the area where the light-transmitting cover 30 is located, thereby improving the energy utilization efficiency of the illumination light L.

[0024] On the other hand, the light guiding module 40 can also adjust the emission angles of the first sub-beam L1 and the second sub-beam L2. Specifically, the emission angle of the first sub-beam L1 emitted through the light guiding module 40 ( Figure 3 J1 in the figure) is smaller than the emission angle ( Figure 3 Here, the exit angle refers to the angle formed by the two outermost light rays in the light beam.

[0025] Since the distance between the first light-transmitting portion 320 and the light source module 20 is greater than the distance between the second light-transmitting portion 340 and the light source module 20, when the emission angle of the first sub-beam L1 is relatively small, the energy of the first sub-beam L1 incident on the first light-transmitting portion 320 can be relatively concentrated to improve the illumination brightness of the first light-transmitting portion 320; and when the emission angle of the second sub-beam L2 is relatively large, the energy of the second sub-beam L2 incident on the second light-transmitting portion 340 can be relatively dispersed to reduce the illumination brightness of the second light-transmitting portion 340.

[0026] Therefore, under the action of the light guiding module 40, the illumination brightness of different light-transmitting areas of the light-transmitting cover 30 in the embodiment of the present application can be roughly equal, so that the overall illumination brightness of the light-transmitting cover 30 can be more uniform, ensuring that the lamp 100 has a better lighting effect.

[0027] The specific structure of the lamp 100 is introduced below.

[0028] In this embodiment, the lamp 100 may include a base 120 and a lampshade 140. The base 120 may fix and support the light source module 20, the light-transmitting cover 30, and the light-guiding module 40. Figure 1In the illustrated embodiment, the base 120 may be axially symmetrical about a designated axis K. Specifically, the number of the light source modules 20, the light-transmitting cover 30, and the light-guiding module 40 are all two, and they are respectively arranged on the base 120 axially symmetrically about the designated axis K. Therefore, the lamp 100 in this embodiment can achieve two-way light emission to improve the lighting range. In some other possible embodiments, the lampshade 140 and the light-transmitting cover 30 may be circular covers, the number of the light source modules 20 and the light-guiding module 40 is multiple and corresponds to each other one by one, and the multiple light source modules 20 may be arranged around the base 120 at intervals to improve the overall lighting brightness of the lamp 100.

[0029] The lampshade 140 is disposed on the outer periphery of the light-transmitting cover 30 and connected to the base 120, and can protect the light source module 20, the light-transmitting cover 30 and the light-guiding module 40. Specifically, the lampshade 140 and the base 120 can be connected by snapping, so that after the lampshade 140 is removed from the base 120, the light source module 20, the light-transmitting cover 30 and the light-guiding module 40 can be repaired or replaced.

[0030] In this embodiment, the light source module 20 is disposed on the base 120. For example, the light source module 20 may be attached to the base 120, or may be embedded and clamped on the base 120. Specifically, the light source module 20 may be an LED array, which may include a plurality of LED lamp beads (not shown in the figure) arranged in an M*N array, and the plurality of LED lamp beads jointly define a light emitting surface 210. In some possible embodiments, the light emitting surface 210 may be parallel to the designated axis K.

[0031] Specifically, the light-emitting surface 210 is used to emit the illumination light L. The illumination light L may include a first sub-beam L1 and a second sub-beam L2, and the first sub-beam L1 and the second sub-beam L2 are respectively located on both sides of the light-emitting normal line M of the light-emitting surface 210. Here, "the first sub-beam L1 and the second sub-beam L2" can be understood as partial beams in the illumination light L, and the first sub-beam L1 and the second sub-beam L2 do not overlap with each other.

[0032] In some possible embodiments, the illumination light L may include only the first sub-beam L1 and the second sub-beam L2, that is, the light beam on one side of the designated axis K in the illumination light L is regarded as the first sub-beam L1, and the light beam on the other side of the designated axis K in the illumination light L is regarded as the second sub-beam L2. The designated axis K is used as a dividing line between the first sub-beam L1 and the second sub-beam L2.

[0033] In some other possible embodiments, the illumination light L may further include other light beams in addition to the first sub-beam L1 and the second sub-beam L2. The first sub-beam L1 and the second sub-beam L2 may be regarded as beam components in the illumination light L having a larger emergent angle (for example, the emergent angle at the light emergent surface 210 is greater than 50 degrees).

[0034] exist Figure 3 In the illustrated embodiment, the illumination light L may further include a third sub-beam L3, which is located between the first sub-beam L1 and the second sub-beam L2 and on the specified axis K. As an example, the third sub-beam L3 may be regarded as a beam component in the illumination light L having a smaller exit angle (for example, the exit angle at the light exit surface 210 is less than or equal to 50 degrees).

[0035] Specifically, this embodiment does not specifically limit the division method of the first sub-beam L1, the second sub-beam L2 and the third sub-beam L3 in the illumination light L, and the three sub-beams may have a clear dividing line or may not have a clear dividing line.

[0036] In this embodiment, the light-transmitting cover 30 is connected to the base 120, and is used to transmit the illumination light L. Specifically, the light-transmitting cover 30 and the base 120 can be snap-connected, so that the light source module 20 and the light guide module 40 can be repaired or replaced after the light-transmitting cover 30 is removed from the base 120. As an embodiment, the light-transmitting cover 30 can be a milky white semi-transparent cover.

[0037] See also Figure 4 and Figure 5 , the light-transmitting cover 30 may include a light-transmitting surface 302, which is located on the side of the light-transmitting cover 30 facing the light source module 20 and is arranged relative to the light-emitting surface 210. Specifically, in the direction from the first light-transmitting portion 320 to the second light-transmitting portion 340, the distance between the light-transmitting surface 302 and the light-emitting surface 210 in the direction of the light-emitting normal line decreases. That is, the distances between different areas on the light-transmitting surface 302 and the light-emitting surface 210 in this embodiment are different. Therefore, the light-transmitting cover 30 is arranged asymmetrically with respect to the light-emitting normal line M.

[0038] exist Figure 4 In the illustrated embodiment, the light-transmitting surface 302 may be a curved surface that protrudes toward the light source module 20. Figure 5 In the illustrated embodiment, the light-transmitting surface 302 may be a plane, and the light-transmitting surface 302 is tilted relative to the light-emitting normal line M; that is, the angle between the light-transmitting surface 302 and the light-emitting normal line M is an acute angle.

[0039] In the present embodiment, the light-transmitting cover 30 may include a first light-transmitting portion 320 and a second light-transmitting portion 340, and the first light-transmitting portion 320 and the second light-transmitting portion 340 are respectively located on opposite sides of the light-transmitting cover 30. Among them, the first light-transmitting portion 320 may be an end region on the light-transmitting cover 30 where the distance between the light source module 20 is relatively large, and the second light-transmitting portion 340 may be an end region on the light-transmitting cover 30 where the distance between the light source module 20 is relatively small. Specifically, there may be a clear dividing line between the first light-transmitting portion 320 and the second light-transmitting portion 340, or there may not be a clear dividing line. In the present embodiment, the first light-transmitting portion 320 and the second light-transmitting portion 340 may be respectively located on opposite sides of the light-emitting normal line M, and the light-emitting normal line M serves as the dividing line between the two.

[0040] In some possible embodiments, the light-transmitting cover 30 may further include a third light-transmitting portion 360, which is connected between the first light-transmitting portion 320 and the second light-transmitting portion 340 and may be regarded as a transition region between the first light-transmitting portion 320 and the second light-transmitting portion 340. The distance between the third light-transmitting portion 360 and the light source module 20 is greater than the distance between the second light-transmitting portion 340 and the light source module 20, and is less than the distance between the first light-transmitting portion 320 and the light source module 20. Here, "the distance between XX and the light source module 20" refers to the straight-line distance between XX and the light source module 20 in the direction of the light-emitting normal M. Specifically, the third light-transmitting portion 360 may be located on the light-emitting normal M.

[0041] It should be noted that the names of the "first light-transmitting portion", "second light-transmitting portion" and "third light-transmitting portion" are all named for the convenience of description. In a specific example, there may or may not be a clear dividing line between the three structures. In some possible embodiments, the first light-transmitting portion 320, the third light-transmitting portion 360 and the second light-transmitting portion 340 may be an integrally formed structure. For example, the light-transmitting cover 30 may be made of plastic by injection molding or machining, and the first light-transmitting portion 320, the third light-transmitting portion 360 and the second light-transmitting portion 340 are three parts at different positions on the light-transmitting cover 30.

[0042] In this embodiment, the light guide module 40 is disposed between the light source module 20 and the light-transmitting cover 30 and is located on the light path where the illumination light L is located, and is used to guide the illumination light L to the light-transmitting cover 30. Figure 3 The light guiding module 40 may include a first reflecting surface 401 and a second reflecting surface 403. The first sub-beam L1 is incident on the first light-transmitting portion 320 after being reflected by the first reflecting surface 401, and the second sub-beam L2 is incident on the second light-transmitting portion 340 after being reflected by the light guiding module 40. In the embodiment of the present application, the first reflecting surface 401 and the second reflecting surface 403 may be formed by the reflecting surface of a total reflection lens, or may be formed by the reflecting surface of a reflector, a reflective cup, etc.

[0043] In some possible embodiments, after being reflected by the first reflective surface 401, the exit angle of the first sub-beam L1 is reduced relative to when it is emitted from the light exiting surface 210. Therefore, the first reflective surface 401 can play a role in converging and collimating the first sub-beam L1. On the one hand, after the first sub-beam L1 is converged by the first reflective surface 401, when it is incident on a relatively far area (that is, the first light-transmitting portion 320) on the light-transmitting cover 30, its corresponding illumination brightness can be greater, so as to improve the illumination brightness of the first light-transmitting portion 320. On the other hand, after the first sub-beam L1 is converged by the first reflective surface 401, it can have good collimation, so as to ensure that the first sub-beam L1 has almost no energy loss when propagating over a long distance, so as to ensure the illumination brightness of the first light-transmitting portion 320.

[0044] In some other possible embodiments, after being reflected by the second reflective surface 403, the emission angle of the second sub-beam L2 increases relative to when it is emitted from the light emitting surface 210. Therefore, the second reflective surface 403 can play a role in diverging the second sub-beam L2, so that when the second sub-beam L2 is incident on a relatively close area (that is, the second light-transmitting portion 340) on the light-transmitting cover 30 after being diverged by the second reflective surface 403, the corresponding illumination brightness can be smaller, thereby reducing the illumination brightness of the second light-transmitting portion 340.

[0045] In some other possible embodiments, after being reflected by the first reflective surface 401, the exit angle of the first sub-beam L1 is reduced relative to when it is emitted from the light exit surface 210. After being reflected by the second reflective surface 403, the exit angle of the second sub-beam L2 is increased relative to when it is emitted from the light exit surface 210. Specifically, the first reflective surface 401 and the second reflective surface 403 can be total reflection surfaces. Therefore, the light guiding module 40 in this embodiment can simultaneously increase the illumination brightness of the first light-transmitting portion 320 and reduce the illumination brightness of the second light-transmitting portion 340.

[0046] Therefore, under the action of the light guiding module 40, the illumination brightness of different light-transmitting areas of the light-transmitting cover 30 in this embodiment can be roughly equal, so that the overall illumination brightness of the light-transmitting cover 30 can be more uniform, ensuring that the lamp 100 has a better lighting effect.

[0047] Specifically, on the cross section formed by the plane passing through the light emitting normal line M, the average tangent slope of the cross-sectional profile of the first reflecting surface 401 relative to the light emitting surface 210 is greater than the average tangent slope of the cross-sectional profile of the second reflecting surface 403 relative to the light emitting surface 210. Here, "the average tangent slope of the cross-sectional profile of XX relative to the light emitting surface 210" can be understood as the average of the multiple tangent slopes of the tangents at multiple contour points on the cross-sectional profile of XX relative to the light emitting surface 210. The larger the tangent slope, the steeper the corresponding tangent is relative to the light emitting surface 210; the smaller the tangent slope, the flatter the corresponding tangent is relative to the light emitting surface 210.

[0048] It is not difficult to understand that the average tangent slope of the first reflective surface 401 is relatively large, so that the angle between the reflected light formed by the first sub-beam L1 acting on the first reflective surface 401 and the light-emitting normal line M is relatively small, and the light is relatively concentrated. The average tangent slope of the second reflective surface 403 is relatively small, so that the angle between the reflected light formed by the second sub-beam L2 acting on the second reflective surface 403 and the light-emitting normal line M is relatively large, and the light is relatively divergent.

[0049] Please refer again Figure 4 or Figure 5 In some possible embodiments, on a cross section formed by a plane passing through the light emitting normal line M, the cross-sectional profile of the first reflective surface 401 has a first endpoint and a second endpoint (neither of which is marked in the figure) opposite to each other, wherein the first endpoint may be an end of the cross-sectional profile of the first reflective surface 401 close to the light emitting surface 210, and the second endpoint may be an end of the cross-sectional profile of the first reflective surface 401 far from the light emitting surface 210. Specifically, a first straight line K1 is defined between the first endpoint and the second endpoint, and the angle between the first straight line K1 and the light emitting surface 210 is a first angle A.

[0050] The cross-sectional profile of the second reflective surface 403 has a third endpoint and a fourth endpoint (neither of which is marked in the figure) opposite to each other, wherein the third endpoint may be an end of the cross-sectional profile of the second reflective surface 403 close to the light emitting surface 210, and the fourth endpoint may be an end of the cross-sectional profile of the second reflective surface 403 far from the light emitting surface 210. Specifically, a second straight line K2 is defined between the third endpoint and the fourth endpoint, and an angle between the second straight line K2 and the light emitting surface 210 is a second angle B. In this embodiment, the second angle B is smaller than the first angle A, and therefore, compared with the second reflective surface 403, the first reflective surface 401 is more inclined relative to the light emitting surface 210, so that it can converge and collimate the first sub-beam L1.

[0051] In some possible embodiments, on a cross section formed by a plane passing through the light emitting normal line M, an end of the cross-sectional profile of the first light-transmitting portion 320 away from the light emitting normal line M and the center point of the light emitting surface 210 define a third straight line K3, and the angle between the third straight line K3 and the light emitting surface 210 is a third angle C. An end of the cross-sectional profile of the second light-transmitting portion 340 away from the light emitting normal line M and the center point of the light emitting surface 210 define a fourth straight line K4, and the angle between the fourth straight line K4 and the light emitting surface 210 is a fourth angle D. The fourth angle D in this embodiment is less than the third angle C. The center point of the light emitting surface 210 here refers to the geometric center of the light emitting surface 210. For example, the outer contour of the light emitting surface 210 may be approximately circular, and the center point of the light emitting surface 210 may be its center; for another example, the outer contour of the light emitting surface 210 may be approximately rectangular, and the center point of the light emitting surface 210 may be its center.

[0052] Specifically, there is a positive correlation between the first angle A and the third angle C, and there is a positive correlation between the second angle B and the fourth angle D, so that the first sub-beam L1 and the second sub-beam L2 emitted by the light source module 20 can be smoothly incident on the corresponding area on the light-transmitting cover 30, so as to improve the energy utilization efficiency of the illumination light L.

[0053] Please refer again Figure 2 and Figure 3 In some possible embodiments, the illumination light L may further include a third sub-beam L3, and the light-transmitting cover 30 may further include a third light-transmitting portion 360. In this case, the light-guiding module 40 is further used to guide the third sub-beam L3 to the third light-transmitting portion 360. Specifically, the third sub-beam L3 is refracted by the light-guiding module 40 and then incident on the third light-transmitting portion 360.

[0054] exist Figure 3 In the illustrated embodiment, the emission angle of the third sub-beam L3 emitted through the light guiding module 40 is greater than the emission angle of the first sub-beam L1 emitted through the light guiding module 40. That is, the emission angle of the third sub-beam L3 is relatively large, so that the energy of the third sub-beam L3 incident on the third light-transmitting portion 360 can be relatively dispersed. When the illumination brightness of the first light-transmitting portion 320 and the illumination brightness of the second light-transmitting portion 340 are approximately equal, the illumination brightness of the transition area on the light-transmitting cover 30 (that is, the area between the first light-transmitting portion 320 and the second light-transmitting portion 340) can also be approximately equal, so that the overall illumination brightness of the light-transmitting cover 30 can be more uniform, ensuring that the lamp 100 has a better lighting effect.

[0055] See also Figure 6The light guide module 40 may be provided with a light entrance cavity 405, and the light source module 20 is disposed in the light entrance cavity 405, so that the illumination light L can be fully incident into the light cavity 405, so as to ensure the light utilization efficiency of the light guide module 40. Specifically, the light entrance cavity 405 may include a first light entrance surface 406, a second light entrance surface 407, and a third light entrance surface 408, and the third light entrance surface 408 is connected between the first light entrance surface 406 and the second light entrance surface 407, so as to define the light entrance cavity 405 together with the first light entrance surface 406 and the second light entrance surface 407.

[0056] The first light incident surface 406 is located on the optical path of the first sub-beam L1, the second light incident surface 407 is located on the optical path of the second sub-beam L2, and the third light incident surface 408 is located on the optical path of the third sub-beam L3. Therefore, in this embodiment, the portion of the illumination light L incident on the first light incident surface 406 is called the "first sub-beam L1", the portion of the illumination light L incident on the second light incident surface 407 is called the "second sub-beam L2", and the portion of the illumination light L incident on the third light incident surface 408 is called the "third sub-beam L3". Specifically, the distance between the side of the third light incident surface 408 close to the first light incident surface 406 and the light source module 20 is greater than the distance between the side of the third light incident surface 408 close to the second light incident surface 407 and the light source module 20, so that the third sub-beam L3 emitted through the light guiding module 40 is deflected toward the side of the second light incident surface 407. Here, "the distance between XX and the light source module 20" can be understood as the straight-line distance between XX and the light source module 20 in the direction of the light emitting normal M.

[0057] It should be noted that, since the second light incident surface 407 will diverge the second sub-beam L2, the illumination uniformity at the second light-transmitting portion 340 is poor. Therefore, in this embodiment, the third light incident surface 408 is tilted toward one side of the second light incident surface 407, so that the third sub-beam L3 incident through the third light incident surface 408 will be deflected toward one side of the second light incident surface 407 as a whole, so that a part of the third sub-beam L3 can overlap with the second sub-beam L2, so that a part of the third sub-beam L3 can be incident on the boundary area between the second light-transmitting portion 340 and the third light-transmitting portion 360, ensuring that a more uniform overall illumination effect is finally presented on the light-transmitting cover 30.

[0058] In some possible embodiments, Figure 2 and Figure 6As shown, the light guiding module 40 may include a first lens 410, and the first lens 410 is asymmetrically arranged about the light emitting normal line M. The light incident cavity 405 is arranged in the first lens 410 and the first lens 410 also includes a third light emitting surface 409, and the light incident cavity 405 is arranged on the side of the first lens 410 away from the third light emitting surface 409. The first lens 410 may also include the above-mentioned first reflecting surface 401 and the second reflecting surface 403, the first reflecting surface 401 is arranged on the side of the first lens 410 away from the first light incident surface 406, the second reflecting surface 403 is arranged on the side of the first lens 410 away from the second light incident surface 407, and the third light emitting surface 409 is connected between the first reflecting surface 401 and the second reflecting surface 403, so as to define the outer contour of the first lens 410 together with the first reflecting surface 401 and the second reflecting surface 403.

[0059] Specifically, the first sub-beam L1 is transmitted through the first light incident surface 406, reflected by the first reflective surface 401, and then emitted through the third light emitting surface 409 to propagate to the first light-transmitting portion 320. The second sub-beam L2 is transmitted through the second light incident surface 407, reflected by the second reflective surface 403, and then emitted through the third light emitting surface 409 to propagate to the second light-transmitting portion 340. The third sub-beam L3 is transmitted through the third light incident surface 408, emitted through the third light emitting surface 409, and propagates to the third light-transmitting portion 360.

[0060] It should be noted here that, since the average tangent slope of the first reflective surface 401 is relatively large, the angle between the reflected light formed by the first sub-beam L1 acting on the first reflective surface 401 and the light-emitting normal M is relatively small, and the deflection angle is relatively small when refracted on the third light-emitting surface 409, so as to ensure that the light can be relatively concentrated. The average tangent slope of the second reflective surface 403 is relatively small, so that the angle between the reflected light formed by the second sub-beam L2 acting on the second reflective surface 403 and the light-emitting normal M is relatively large, and the deflection angle is relatively large when refracted on the third light-emitting surface 409, which can further improve the divergence of the light.

[0061] Specifically, a total reflection film may be attached or plated on the first reflection surface 401 and the second reflection surface 403 of the first lens 410 to achieve total reflection of the light. Therefore, the light guiding module 40 in this embodiment only needs a single lens to guide the illumination light L, which can reduce the difficulty of installing the light guiding module 40.

[0062] In some other possible embodiments, Figure 7 and Figure 8As shown, the light guiding module 40 may include a second lens 430 and a reflector 450, and the second lens 430 and the reflector 450 are both asymmetrically arranged about the light emitting normal M. Among them, the light incident cavity 405 is arranged in the second lens 430 and the second lens 430 also includes a fourth light emitting surface 436, and the light incident cavity 405 is arranged on the side of the second lens 430 away from the fourth light emitting surface 436. The second lens 430 may also include a first light emitting surface 432 and a second light emitting surface 434, the first light emitting surface 432 is arranged on the side of the second lens 430 away from the first light incident surface 406, the second light emitting surface 434 is arranged on the side of the second lens 430 away from the second light incident surface 407, and the fourth light emitting surface 436 is connected between the first light emitting surface 432 and the second light emitting surface 434 to define the outer contour of the second lens 430 together with the first light emitting surface 432 and the second light emitting surface 434.

[0063] The reflector 450 is sleeved on the periphery of the second lens 430, and the reflector 450 may include the first reflective surface 401 and the second reflective surface 403, the first reflective surface 401 and the first light emitting surface 432 are arranged relatively and spaced apart, and the second reflective surface 403 and the second light emitting surface 434 are arranged relatively and spaced apart. Specifically, the reflector 450 may be a reflective cup, and the first reflective surface 401 and the second reflective surface 403 are respectively the inner surfaces of the reflective cup. Exemplarily, a metal reflective layer (e.g., an aluminum film, a silver film) or the like may be plated on the inner surface of the reflective cup.

[0064] Specifically, the first sub-beam L1 sequentially transmits the first light incident surface 406 and the first light emitting surface 432, and then is reflected by the first reflecting surface 401, so as to propagate to the first light-transmitting portion 320. The second sub-beam L2 sequentially transmits the second light incident surface 407 and the second light emitting surface 434, and then is reflected by the second reflecting surface 403, so as to propagate to the second light-transmitting portion 340. The third sub-beam L3 transmits the third light incident surface 408, and then is emitted through the fourth light emitting surface 436, so as to propagate to the third light-transmitting portion 360.

[0065] Therefore, the light guide module 40 in this embodiment adopts a combination of a lens and a reflective cup, so that the light path can be adjusted more flexibly. Figure 2 By adopting a single lens implementation, the light guiding module 40 in this embodiment can reduce the difficulty and cost of lens processing, so as to reduce the overall hardware cost of the lamp 100.

[0066] It is not difficult to find here that Figure 3 and Figure 7 In the illustrated embodiment, the first reflective surface 401 and the second reflective surface 403 are asymmetrically arranged about the light emitting normal line M to adjust the emission angles of the first sub-beam L1 and the second sub-beam L2 so that the illumination brightness of different light-transmitting areas on the light-transmitting cover 30 can be substantially equal.

[0067] In some other possible embodiments, the first reflective surface 401 and the second reflective surface 403 may be symmetrically arranged about the light emitting normal line M. The light guiding module 40 may further include a light emitting surface (eg, Figure 6 The third light exiting surface 409 in the figure), wherein the light exiting surface may include a first light exiting area and a second light exiting area (neither of which is shown in the figure). The first sub-beam L1 is refracted by the first light exiting area and then incident on the first light transmitting portion 320, and the second sub-beam L2 is refracted by the second light exiting area and then incident on the second light transmitting portion 340.

[0068] As an example, the angle between the first light exit area and the light exit normal M is not equal to the angle between the second light exit area and the light exit normal M, so that the exit angle of the first sub-beam L1 emitted through the first light exit area can be smaller than the exit angle of the second sub-beam L2 emitted through the second light exit area.

[0069] As another example, the first light exit area and the second light exit area may be respectively provided with a plurality of refractive microstructures, and the arrangement of the plurality of refractive microstructures provided in the first light exit area is different from the arrangement of the plurality of refractive microstructures provided in the second light exit area, so that the exit angle of the first sub-beam L1 emitted through the first light exit area may be smaller than the exit angle of the second sub-beam L2 emitted through the second light exit area. Specifically, this embodiment does not limit the implementation method of the light exit surface.

[0070] The embodiment of the present application provides a lamp 100, which may include a light source module 20, a light-transmitting cover 30, and a light-guiding module 40. The light source module 20 is used to emit an illumination light L. The light source module 20 has a light-emitting surface 210, and the illumination light L is emitted through the light-emitting surface 210. Specifically, the illumination light L may include a first sub-beam L1 and a second sub-beam L2, and the first sub-beam L1 and the second sub-beam L2 are respectively located on both sides of a light-emitting normal line M of the light-emitting surface 210. The light-transmitting cover 30 is arranged relative to the light-emitting surface 210, and the light-transmitting cover 30 may include a first light-transmitting portion 320 and a second light-transmitting portion 340, and the first light-transmitting portion 320 and the second light-transmitting portion 340 are respectively located on opposite sides of the light-emitting normal line M, and the distance between the first light-transmitting portion 320 and the light source module 20 is greater than the distance between the second light-transmitting portion 340 and the light source module 20. The light guiding module 40 is disposed between the light source module 20 and the light-transmitting cover 30 and is located on the light path of the illumination light L, and is used to guide the illumination light L to the light-transmitting cover 30. The first sub-beam L1 is guided to the first light-transmitting portion 320 via the light guiding module 40, and the second sub-beam L2 is guided to the second light-transmitting portion 340 via the light guiding module 40.

[0071] On the one hand, the light guiding module 40 is used to guide the first sub-beam L1 to the first light-transmitting portion 320 and guide the second sub-beam L2 to the second light-transmitting portion 340, so as to redistribute the illumination light L and improve the energy utilization efficiency of the illumination light L.

[0072] On the other hand, the light guiding module 40 can also adjust the emission angles of the first sub-beam L1 and the second sub-beam L2. Specifically, the emission angle of the first sub-beam L1 emitted through the light guiding module 40 is smaller than the emission angle of the second sub-beam L2 emitted through the light guiding module 40. Since the distance between the first light-transmitting portion 320 and the light source module 20 is greater than the distance between the second light-transmitting portion 340 and the light source module 20, when the emission angle of the first sub-beam L1 is relatively small, the energy of the first sub-beam L1 incident on the first light-transmitting portion 320 can be relatively concentrated to improve the illumination brightness of the first light-transmitting portion 320; and when the emission angle of the second sub-beam L2 is relatively large, the energy of the second sub-beam L2 incident on the second light-transmitting portion 340 can be relatively dispersed to reduce the illumination brightness of the second light-transmitting portion 340.

[0073] Therefore, under the action of the light guiding module 40, the illumination brightness of different light-transmitting areas of the light-transmitting cover 30 in the embodiment of the present application can be roughly equal, so that the overall illumination brightness of the light-transmitting cover 30 can be more uniform, ensuring that the lamp 100 has a better lighting effect.

[0074] In the specification of this application, certain words are used to refer to specific components in the specification and claims. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as the criterion for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to"; "substantially" means that those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0075] In the description of the present application, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", and "inside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are merely simplified descriptions for the convenience of describing the present application. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0076] In this application, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be internal communication between two elements, or it can be only surface contact. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A lamp, characterized in that: include: A light source module, for emitting illumination light, the light source module having a light emitting surface; the illumination light comprises a first sub-beam and a second sub-beam, the first sub-beam and the second sub-beam are respectively located on both sides of a light emitting normal line of the light emitting surface; A light-transmitting cover is arranged relative to the light-emitting surface and spaced apart from each other; the light-transmitting cover comprises a first light-transmitting portion and a second light-transmitting portion, the first light-transmitting portion and the second light-transmitting portion are respectively located on opposite sides of the light-emitting normal line, and the distance between the first light-transmitting portion and the light source module is greater than the distance between the second light-transmitting portion and the light source module; and a light guiding module, which is arranged between the light source module and the light-transmitting cover and is located on the light path where the illumination light is located, and is used to guide the illumination light to the light-transmitting cover; wherein the first sub-beam is guided to the first light-transmitting portion via the light guiding module, and the second sub-beam is guided to the second light-transmitting portion via the light guiding module; and the emission angle of the first sub-beam emitted via the light guiding module is smaller than the emission angle of the second sub-beam emitted via the light guiding module.

2. The lamp according to claim 1, characterized in that: The light guiding module comprises a first reflecting surface and a second reflecting surface, the first sub-beam is incident on the first light-transmitting portion after being reflected by the first reflecting surface, and the second sub-beam is incident on the second light-transmitting portion after being reflected by the light guiding module; After being reflected by the first reflection surface, the emergence angle of the first sub-beam decreases; or / and after being reflected by the second reflection surface, the emergence angle of the second sub-beam increases.

3. The lamp according to claim 2, characterized in that: On a cross section formed by a plane passing through the light emitting normal line, an average tangent slope of a cross-sectional profile of the first reflecting surface relative to the light emitting surface is greater than an average tangent slope of a cross-sectional profile of the second reflecting surface relative to the light emitting surface.

4. The lamp according to claim 2, characterized in that: On a cross section formed by a plane passing through the light emitting normal line, a cross-sectional profile of the first reflecting surface has a first endpoint and a second endpoint opposite to each other, a first straight line is defined between the first endpoint and the second endpoint, and an angle between the first straight line and the light emitting surface is a first angle; The cross-sectional profile of the second reflecting surface has a third endpoint and a fourth endpoint opposite to each other, a second straight line is defined between the third endpoint and the fourth endpoint, and an angle between the second straight line and the light emitting surface is a second angle; the second angle is smaller than the first angle.

5. The lamp according to claim 2, characterized in that: On a cross section formed by a plane passing through the light emitting normal line, an end of the cross-sectional profile of the first light-transmitting portion away from the light emitting normal line and a center point of the light emitting surface define a third straight line, and an angle between the third straight line and the light emitting surface is a third angle; An end of the cross-sectional profile of the second light-transmitting portion away from the light-emitting normal line and the center point of the light-emitting surface define a fourth straight line, and an angle between the fourth straight line and the light-emitting surface is a fourth angle; the fourth angle is smaller than the third angle.

6. The lamp according to claim 1, characterized in that: The illumination light further includes a third sub-beam, and the third sub-beam is located between the first sub-beam and the second sub-beam; The light-transmitting cover further includes a third light-transmitting portion, and the third light-transmitting portion is connected between the first light-transmitting portion and the second light-transmitting portion; the third sub-beam is refracted by the light guiding module and then incident on the third light-transmitting portion.

7. The lamp according to claim 6, characterized in that: The distance between the third light-transmitting portion and the light source module is greater than the distance between the second light-transmitting portion and the light source module, and is smaller than the distance between the first light-transmitting portion and the light source module; An exit angle of the third sub-beam emitted through the light guiding module is greater than an exit angle of the first sub-beam emitted through the light guiding module.

8. The lamp according to claim 6, characterized in that: The light guide module is provided with a light entrance cavity, and the light source module is arranged in the light entrance cavity; The light incident cavity comprises a first light incident surface, a second light incident surface and a third light incident surface, wherein the third light incident surface is connected between the first light incident surface and the second light incident surface; wherein the first light incident surface is located on the optical path where the first sub-beam is located, the second light incident surface is located on the optical path where the second sub-beam is located, and the third light incident surface is located on the optical path where the third sub-beam is located; The distance between the side of the third light incident surface close to the first light incident surface and the light source module is greater than the distance between the side of the third light incident surface close to the second light incident surface and the light source module, so that the third sub-beam emitted through the light guiding module is deflected toward one side of the second light incident surface.

9. The lamp according to claim 8, characterized in that: The light guiding module comprises a first lens; the light incident cavity is arranged at the first lens, the first lens further comprises a first reflecting surface and a second reflecting surface, the first reflecting surface is arranged at a side of the first lens away from the first light incident surface, the first sub-beam is transmitted through the first light incident surface and then reflected by the first reflecting surface to propagate to the first light-transmitting portion; The second reflecting surface is disposed on a side of the first lens away from the second light incident surface. After the second sub-beam is transmitted through the second light incident surface, it is reflected by the second reflecting surface to propagate to the second light transmitting portion.

10. The lamp according to claim 8, characterized in that: The light guiding module comprises a second lens and a reflector; the light incident cavity is arranged at the second lens, the second lens further comprises a first light emitting surface and a second light emitting surface, the first light emitting surface is arranged at a side of the second lens away from the first light incident surface, and the second light emitting surface is arranged at a side of the second lens away from the second light incident surface; The reflector is sleeved on the outer periphery of the second lens; the reflector comprises a first reflective surface and a second reflective surface, the first reflective surface is arranged opposite to the first light emitting surface and spaced apart, the first sub-beam is sequentially transmitted through the first light incident surface and the first light emitting surface and then reflected through the first reflective surface to propagate to the first light transmitting portion; The second reflective surface is arranged relative to the second light emitting surface and is spaced apart from each other. The second sub-beam is sequentially transmitted through the second light incident surface and the second light emitting surface and then reflected by the second reflective surface to propagate to the second light transmitting portion.

11. The lamp according to any one of claims 1 to 10, characterized in that: The light-transmitting cover includes a light-transmitting surface, which is located on the side of the light-transmitting cover facing the light source module; in the direction from the first light-transmitting portion to the second light-transmitting portion, the distance between the light-transmitting surface and the light-emitting surface in the direction of the light-emitting normal decreases; wherein the light-transmitting surface is a curved surface protruding toward the light source module; or, the light-transmitting surface is a plane.

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