Lighting device
By using multiple light sources and inclined reflective surfaces to reflect light, the problem of difficult to accurately control the light irradiation angle and low utilization rate is solved, and labor-saving and accurate light adjustment and efficient utilization are achieved.
Patent Information
- Application Number
- CN202422396544.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The known screen hanging light illumination angle is difficult to accurately control and laborious, and the light utilization rate is low.
A plurality of first light sources and second light sources are used to generate light beams separately, and the light is reflected by reflecting surfaces with different inclinations to the light outlet, so as to achieve accurate angle adjustment and efficient utilization of light.
It realizes labor-saving and precise control of light irradiation angle and improves light utilization, simplifies the optical path design, and adapts to lighting applications with different needs.
Smart Images
Figure CN223165479U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an optical device, and more particularly to a lighting device. Background Art
[0002] Lighting devices are widely used in various living places, and the appearance, light-emitting angle and other characteristics of each lighting device will also be changed according to different uses. For example, lighting devices for reading generally include table lamps, floor lamps and screen hanging lamps. Among them, screen hanging lamps are usually arranged on the upper edge of the screen to illuminate both the screen and the desktop at the same time. Compared with traditional table lamps and floor lamps, screen hanging lamps can avoid direct light on the screen and do not occupy additional desktop space. In addition, when the user uses the screen hanging lamp in a writing posture, the light irradiated by the screen hanging lamp is less likely to be blocked by the user's body. Therefore, screen hanging lamps are becoming more and more popular among consumers in the market.
[0003] However, the known screen hanging lamp can only change the angle of the light irradiating the desktop by manual rotation, making it difficult to accurately control the above angle and laborious. In addition, after adjusting the above angle, only a part of the light will irradiate the area on the desktop that needs to be illuminated, resulting in the ineffective utilization of the other part of the light, thus causing energy waste.
[0004] The "Background Art" paragraph is only used to help understand the content of the present utility model. Therefore, the content disclosed in the "Background Art" paragraph may include some known technologies that are not known to those skilled in the art. The content disclosed in the "Background Art" paragraph does not represent the problems to be solved by the content or one or more embodiments of the present utility model, which are known or recognized by those skilled in the art before the application of the present utility model. Summary of the Utility Model
[0005] The present utility model provides a lighting device, which can change the light irradiation angle labor-savingly and accurately, and can also improve the light utilization rate.
[0006] Other objects and advantages of the present utility model can be further understood from the technical features disclosed in the present utility model.
[0007] To achieve one or some or all of the above purposes or other purposes, an embodiment of the present utility model provides a lighting device, which includes a housing, a substrate, a plurality of first light sources, a plurality of second light sources, and a reflecting element. The housing has a light outlet. The substrate is located inside the housing and stands beside the light outlet. The first light sources are arranged on the substrate along a direction and are used to generate first light beams. The second light sources are arranged on the substrate along this direction, and the second light sources and the first light sources are arranged side by side on the substrate, and the second light sources are located between the first light sources and the light outlet. The second light sources are used to generate second light beams. The reflecting element is located inside the housing and has a first reflecting surface and a second reflecting surface. The first reflecting surface is located on the side of the substrate away from the light outlet. The second reflecting surface and the substrate are respectively located on opposite side edges of the first reflecting surface, and the first reflecting surface and the second reflecting surface face the light outlet. The second reflecting surface is inclined relative to the first reflecting surface. The first light sources and the second light sources are together located in the accommodating space formed by the substrate and the reflecting element. The first reflecting surface is used to reflect the main light rays of the first light beams to the light outlet, and the second reflecting surface is used to reflect the main light rays of the second light beams to the light outlet.
[0008] In the lighting device of the present utility model, the main light rays of the first light beams and the main light rays of the second light beams are respectively reflected to the light outlet by the first reflecting surface and the second reflecting surface with different inclinations, so that the main light rays of the first light beams and the main light rays of the second light beams can respectively exit from the light outlet at different angles, thereby respectively providing different illumination ranges. Therefore, the lighting device can provide different illumination ranges according to the first light sources and / or the second light sources being turned on, which can not only save effort and accurately change the illumination angle of the lighting device, but also ensure that most of the light rays emitted from the lighting device are incident on the area with lighting requirements, thereby improving the light utilization rate. In addition, since the first light sources and the second light sources are located in the same accommodating space, there are no other mechanical components in the accommodating space that will significantly change the transmission paths of the first light beams and the second light beams except for the first reflecting surface and the second reflecting surface, thereby effectively simplifying the optical path design of the lighting device. In this way, the emission angles of the first light beams and the second light beams can be more easily and accurately adjusted according to different requirements, so that the lighting device of the present utility model can be widely applied.
[0009] To make the above and other purposes, features and advantages of the present utility model more obvious and understandable, specific embodiments are hereinafter given, and detailed descriptions are made in conjunction with the accompanying drawings as follows. Description of the Drawings
[0010] Figure 1 is a cross-sectional schematic view of the lighting device according to an embodiment of the present utility model.
[0011] Figure 2 is Figure 1 a partial three-dimensional schematic view of the lighting device.
[0012] Figure 3 isFigure 1 Top view schematic diagram of a substrate, a first light source, and a second light source.
[0013] Figure 4 is Figure 1 Schematic diagram of a first light beam emitted by the lighting device of
[0014] Figure 5 is Figure 4 Schematic diagram of the illuminance distribution of the first light beam of
[0015] Figure 6 Figure 1 Schematic diagram of a second light beam emitted by the lighting device of
[0016] Figure 7 is Figure 6 Schematic diagram of the illuminance distribution of the second light beam of
[0017] Figure 8 is Figure 1 Partial enlarged schematic diagram of the lighting device of
[0018] Figure 9 is formed by Figure 1 Schematic diagram of the illuminance distribution formed by the first light beam and the second light beam of
[0019] Figure 10 Cross-sectional schematic diagram of the lighting device according to another embodiment of the present utility model.
[0020] Explanation of reference numerals:
[0021] 100, 100a: Lighting device
[0022] 110: Housing
[0023] 120: Substrate
[0024] 121: First side
[0025] 122: Second side
[0026] 130: First light source
[0027] 140: Second light source
[0028] 150: Reflective element
[0029] 160: Light-transmitting plate
[0030] A1: First included angle
[0031] A2: Second included angle
[0032] AS: Accommodating space
[0033] B1: First light beam
[0034] B2: Second beam
[0035] C1, C2, C3: center points
[0036] D: Direction
[0037] DIS: Display Device
[0038] E: Side edge
[0039] E1: First side
[0040] E2: Second side
[0041] E3: The Third Side
[0042] E4: The Fourth Side
[0043] L: length
[0044] L1, L2: shortest distance
[0045] N1, N2: normal direction
[0046] O: light outlet
[0047] P: Reference surface
[0048] R1, R2: main rays
[0049] RS1: First reflective surface
[0050] RS2: Second reflective surface
[0051] S: Surface
[0052] TS1, TS2: top surface
[0053] W: width
[0054] W1: first width
[0055] W2: Second width
[0056] Z1, Z2, Z3: irradiation areas. DETAILED DESCRIPTION
[0057] The aforementioned and other technical aspects, features, and functions of this invention will be more clearly understood in the following detailed description of a preferred embodiment with reference to the accompanying drawings. Directional terms such as up, down, left, right, front, and back, used in the following embodiments, are merely references to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes only and are not intended to limit this invention.
[0058] Figure 1 It is a cross-sectional schematic diagram of a lighting device according to an embodiment of the present invention. Figure 2 yes Figure 1Partial perspective view of the lighting device. Figure 3 is Figure 1 Top view of the substrate, the first light source, and the second light source of. Please refer to Figure 1 and Figure 2 , the lighting device 100 includes a housing 110, a substrate 120, a plurality of first light sources 130, a plurality of second light sources 140, and a reflecting element 150. The housing 110 has a light exit O. The substrate 120 is located inside the housing 110 and stands beside the light exit O. The first light sources 130 are arranged on the substrate 120 along the direction D (also shown in Figure 3 ) and are used to generate a first light beam B1 ( Figure 1 The outer diameter of the light beam of the first light beam B1 generated by the first light source 130 is represented by two dotted lines in). The second light sources 140 are arranged on the substrate 120 along the direction D, and the second light sources 140 and the first light sources 130 are arranged side by side on the substrate 120, and the second light sources 140 are located between the first light sources 130 and the light exit O. The second light sources 140 are used to generate a second light beam B2 ( Figure 1 The outer diameter of the light beam of the second light beam B2 generated by the second light source 140 is represented by two dotted lines in). The reflecting element 150 is located inside the housing 110 and has a first reflecting surface RS1 and a second reflecting surface RS2. The first reflecting surface RS1 is located on the side of the substrate 120 away from the light exit O. The second reflecting surface RS2 and the substrate 120 are respectively located on the opposite side edges of the first reflecting surface RS1, and the first reflecting surface RS1 and the second reflecting surface RS2 face the light exit O. The second reflecting surface RS2 is inclined relative to the first reflecting surface RS1. The first light sources 130 and the second light sources 140 are together located in the accommodation space AS formed by the substrate 120 and the reflecting element 150. The first reflecting surface RS1 is used to reflect the chief ray R1 of the first light beam B1 to the light exit O, and the second reflecting surface RS2 is used to reflect the chief ray R2 of the second light beam B2 to the light exit O.
[0059] It should be noted that the lighting device 100 in this embodiment is exemplified by a screen hanging lamp. However, in other embodiments, the lighting device 100 may include a table lamp or a floor lamp, etc., and the present utility model does not limit this much.
[0060] In this embodiment, the principal ray R1 of the first light source 130 may be the ray with the strongest light intensity in the first light beam B1 or the ray located on the central axis of the first light beam B1. In this embodiment, the ray on the central axis of the first light beam B1 is taken as an example of the principal ray R1. The definition of the principal ray R2 of the second light beam B2 is the same as that of the principal ray R1 of the first light beam B1, and in this embodiment, the ray on the central axis of the second light beam B2 is taken as an example of the principal ray R2. It is worth mentioning that no structural member with the function of reflecting or blocking light is provided between the first light source 130 and the second light source 140. Thus, before the first light beam B1 and the second light beam B2 are respectively incident on the first reflecting surface RS1 and the second reflecting surface RS2, the transmission paths of the first light beam B1 and the second light beam B2 will not be significantly changed due to the interference of the above-mentioned structural member, thereby simplifying the optical path design of the lighting device 100 and making the light output field pattern of the lighting device 100 easy to be changed according to different requirements. In addition, since no such structural member is provided between the first light source 130 and the second light source 140, part of the first light beam B1 can be directly incident on the second reflecting surface RS2, and part of the second light beam B2 can also be directly incident on the first reflecting surface RS1. Specifically, each of the first light sources 130 has a top surface TS1 facing away from the substrate 120, and each of the second light sources 140 has a top surface TS2 facing away from the substrate 120. Part of the first light beam B1 can directly pass between the top surface TS2 of the second light source 140 and the second reflecting surface RS2 after being emitted from the first light source 130, and then be incident on the second reflecting surface RS2. Similarly, in one embodiment, part of the second light beam B2 can directly pass between the top surface TS1 of the first light source 130 and the first reflecting surface RS1 after being emitted from the second light source 140, and then be incident on the first reflecting surface RS1. Thus, the diversity of the light output field pattern of the lighting device 100 can also be increased, enabling the lighting device 100 to provide a wider range of uses.
[0061] Please refer to Figure 2 and Figure 3 , the first light source 130 and the second light source 140 in this embodiment are, for example, light-emitting diodes (LEDs). Incidentally, the first light source 130 and the second light source 140 can be arranged in an interleaved manner with each other to increase the space around each of the first light sources 130 and the second light sources 140, so as to more flexibly select the sizes of the first light source 130 and the second light source 140. For example, the substrate 120 may have a first side 121 and a second side 122 (both are also marked in Figure 1)。The first side 121 is opposite to the second side 122. The surface S of the substrate 120 connects the first side 121 and the second side 122, and the second side 122 is fixed beside the light outlet O, so that the substrate 120 stands beside the light outlet O. Each first light source 130 and each second light source 140 can be completely staggered in the direction from the first side 121 to the second side 122, but not limited thereto. In another embodiment, each first light source 130 and each second light source 140 can be partially overlapped in the above direction. The number and spacing of the first light source 130 and the second light source 140 can be changed according to actual needs, so the present utility model does not limit this too much. In this embodiment, the first light source 130 and the second light source 140 can be respectively arranged substantially along the side edges of the first side 121 and the second side 122 of the substrate 120. Further, the first light source 130 and the second light source 140 are located between the first side 121 and the second side 122, and the included angle between the direction D and the side edge E of the second side 122 can be 0 to 10 degrees. For example, the included angle in this embodiment can be about 0 degrees, that is, multiple first light sources 130 and multiple second light sources 140 can be arranged along the direction D substantially parallel to the side edge E. Please refer to Figure 1 , the shortest distance L1 between the first light source 130 and the light outlet O can be greater than the shortest distance L2 between the second light source 140 and the light outlet O. In other words, the first light source 130 can be farther from the light outlet O than the second light source 140, so that most of the first light beams B1 can be incident on the first reflecting surface RS1, and most of the second light beams B2 can be incident on the second reflecting surface RS2.
[0062] The material of the reflection element 150 may include a metal and may be of an integral structure. For example, the reflection element 150 may include two connected plate bodies, the first reflection surface RS1 and the second reflection surface RS2 are located on one of the above plate bodies, and the substrate 120 may be fixed to the other plate body. In this embodiment, the first reflection surface RS1 may be at least located on the transmission path of the first light beam B1, and the second reflection surface RS2 may be at least located on the transmission path of the second light beam B2. For example, the second reflection surface RS2 may overlap each second light source 140 in the normal direction N1 of each top surface TS to ensure that the principal ray R2 of the second light beam B2 is incident on the second reflection surface RS2. In addition, the second reflection surface RS2 may also be located on a part of the transmission path of the first light beam B1. For example, the principal ray R1 of the first light beam B1 may be incident on the first reflection surface RS1, and part of the light rays other than the principal ray R1 of the first light beam B1 may be incident on the second reflection surface RS2. It can be understood that in one embodiment, the first reflection surface RS1 and the second reflection surface RS2 may be together located on the transmission paths of the first light beam B1 and the second light beam B2. Similarly, the first reflection surface RS1 may also be located on a part of the transmission path of the second light beam B2. In another embodiment, the first light beam B1 may be incident on the first reflection surface RS1 but not on the second reflection surface RS2, and in another embodiment, the second light beam B2 may be incident on the second reflection surface RS2 but not on the first reflection surface RS1.
[0063] Furthermore, the second reflection surface RS2 of this embodiment may have opposite first side E1 and second side E2, and the first reflection surface RS1 may have opposite third side E3 and fourth side E4. The first side E1 is connected to the fourth side E4, and the third side E3 is connected to the substrate 120, but it is not limited thereto, and the third side E3 in other embodiments may not be connected to the substrate 120. In this embodiment, the first reflection surface RS1 has a first width W1 between the third side E3 and the fourth side E4, and the second reflection surface RS2 has a second width W2 between the first side E1 and the second side E2. The first width W1 is, for example, smaller than the second width W2, so that the first reflection surface RS1 can be more accurately located on the transmission path of the principal ray R1 of the first light beam B1, and the second reflection surface RS2 can be more accurately located on the transmission path of the principal ray R2 of the second light beam B2.
[0064] Incidentally, the first side E1 of the second reflecting surface RS2 overlaps, for example, with the fourth side E4 of the first reflecting surface RS1. In this embodiment, the first side E1 connects the side of the first reflecting surface RS1 away from the substrate 120, and the second side E2 connects to the housing 110 and is located on opposite sides of the light exit O from the substrate 120. In this way, it is possible to prevent the first light beam B1 and the second light beam B2 from exiting between the housing 110 and the reflecting element 150, thereby improving the light utilization rate. Similarly, the first reflecting surface RS1 can shield the first light source 130 and the second light source 140 from the first side 121 of the substrate 120 to prevent the first light beam B1 and the second light beam B2 from exiting between the first reflecting surface RS1 and the first side 121, so as to further improve the light utilization rate. In this embodiment, the reflecting element 150 can be adjacent to the substrate 120 and the housing 110, and since the reflecting element 150 is of an integral structure, the second reflecting surface RS2 can be adjacent to the first reflecting surface RS1 to ensure that the reflecting element 150 can reflect all the first light beam B1 and the second light beam B2 to the light exit O. Incidentally, the first reflecting surface RS1 and the second reflecting surface RS2 can respectively include planes, which can simplify the manufacturing process of the reflecting element 150 and further reduce the manufacturing cost of the reflecting element 150. In one embodiment, the first reflecting surface RS1 and the second reflecting surface RS2 can respectively include curved surfaces or parabolic surfaces.
[0065] The substrate 120 of this embodiment can include a circuit board for electrically connecting the first light source 130 and the second light source 140. The first light source 130 and the second light source 140 are disposed on the surface S of the substrate 120, and the surface S can include a reflecting surface to further improve the light utilization rate.
[0066] The housing 110 can be generally columnar. However, the shape of the housing 110 can be changed according to the use of the lighting device 100, so the present utility model does not limit this in detail.
[0067] Compared with the known technology, in the lighting device 100 of the present embodiment, the principal rays R1 of the first light beam B1 and the principal rays R2 of the second light beam B2 are respectively reflected by the first reflecting surface RS1 and the second reflecting surface RS2 with different inclinations to the light exit O, so that the principal rays R1 of the first light beam B1 and the principal rays R2 of the second light beam B2 can exit from the light exit O at different angles respectively, thereby providing different illumination ranges respectively. Therefore, the lighting device 100 can provide different illumination ranges according to the activation of the first light source 130 and / or the second light source 140, which can not only save effort and accurately change the illumination angle of the lighting device 100, but also ensure that most of the light rays emitted from the lighting device 100 are incident on the area with lighting requirements, thereby improving the light utilization rate. In addition, since the first light source 130 and the second light source 140 are located in the same accommodation space AS, therefore, in addition to the first reflecting surface RS1 and the second reflecting surface RS2, there are no other structural components in the accommodation space AS that will significantly change the transmission paths of the first light beam B1 and the second light beam B2, thereby effectively simplifying the optical path design of the lighting device 100. In this way, the exit angles of the first light beam B1 and the second light beam B2 can be more easily and accurately adjusted according to different requirements, so that the lighting device 100 of the present embodiment can be widely applied.
[0068] Figure 4 is Figure 1 a schematic diagram of the first light beam emitted by the lighting device. Figure 5 is Figure 4 a schematic diagram of the illuminance distribution of the first light beam. Figure 6 Figure 1 a schematic diagram of the second light beam emitted by the lighting device. Figure 7 is Figure 6 a schematic diagram of the illuminance distribution of the second light beam. Figure 4 and Figure 6 roughly illustrate the first light beam B1 and the second light beam B2 emitted by the lighting device 100, but the actual light output situation of the lighting device 100 is not limited to Figure 4 and Figure 6 . Please first refer to Figure 4 and Figure 6 , in the present embodiment, the first light beam B1 and the second light beam B2 are used to irradiate the reference surface P after exiting from the light exit O, and the distance between the center point C1 of the irradiation area Z1 of the first light beam B1 on the reference surface P and the light exit O can be greater than the distance between the center point C2 of the irradiation area Z2 of the second light beam B2 on the reference surface P and the light exit O. Specifically, the irradiation areas Z1 and Z2 can be all the areas on the reference surface P irradiated by the first light beam B1 and the second light beam B2 respectively, and the center points C1 and C2 can be the positions with the highest illuminance of the first light beam B1 and the second light beam B2 on the reference surface P respectively.
[0069] The lighting device 100 of this embodiment can be disposed on the upper edge of the display device DIS, and the reference plane P can be the desktop to be irradiated by the lighting device 100. Specifically, please refer to Figure 1 and Figure 4 . When the first light source 130 is activated and the second light source 140 is turned off, most of the first light beam B1 is reflected by the first reflecting surface RS1 and exits from the light exit O at a larger angle, thereby irradiating an area on the reference plane P that is farther from the display device DIS (or the light exit O). Therefore, as shown in Figure 4 and Figure 5 , the center point C1 of the irradiation area Z1 of the first light beam B1 on the reference plane P will be farther from the display device DIS. On the other hand, please refer to Figure 1 and Figure 6 . When the second light source 140 is activated and the first light source 130 is turned off, most of the second light beam B2 is reflected by the second reflecting surface RS2 and exits from the light exit O at a smaller angle, thereby irradiating an area on the reference plane P that is closer to the display device DIS (or the light exit O). Therefore, as shown in Figure 6 and Figure 7 , the center point C2 of the irradiation area Z2 of the second light beam B2 on the reference plane P will be closer to the display device DIS. Among them, although the display device DIS in Figure 5 and Figure 7 is adjacent to the irradiation areas Z1 and Z2, this is only for understanding the correspondence relationship of the illuminance distribution with respect to the display device DIS, and is not used to limit the distance between the two.
[0070] Figure 8 is Figure 1 a partial enlarged schematic view of the lighting device. Further, please refer to Figure 8 . A first included angle A1 is formed between the first reflecting surface RS1 and the normal direction N2 of the surface S of the substrate 120, and a second included angle A2 is formed between the second reflecting surface RS2 and the normal direction N2 of the surface S. The first included angle A1 is, for example, smaller than the second included angle A2. In this way, most of the first light beam B1 (such as the principal ray R1) can exit from the light exit O at a larger angle after being reflected by the first reflecting surface RS1, thereby irradiating an area on the reference plane P (drawn in Figure 4 ) that is farther from the light exit O. Similarly, most of the second light beam B2 (such as the principal ray R2) can exit from the light exit O at a smaller angle after being reflected by the second reflecting surface RS2, thereby irradiating an area on the reference plane P (drawn in Figure 6) The area closer to the light exit O. In one embodiment, the first angle A1 is, for example, between 0° and 50°, and in another embodiment, the first angle A1 can be approximately 12°. Similarly, the second angle A2 can be between 0° and 65°, and is, for example, approximately 27°. It can be understood that the specific values of the first angle A1 and the second angle A2 can be changed according to actual needs, and the present utility model does not limit this further.
[0071] Figure 9 is formed by Figure 1 The schematic diagram of the illuminance distribution formed by the first light beam and the second light beam. Please refer to Figure 5 、 Figure 7 and Figure 9 , in this embodiment, when the first light source 130 and the second light source 140 are started simultaneously, the central point C3 of the irradiation area Z3 of the first light beam B1 and the second light beam B2 on the reference plane P (drawn in Figure 4 and Figure 6 ) and the light exit O (drawn in Figure 4 and Figure 6 ) can be between the central points C1 and C2. In other words, the lighting device 100 can at least provide Figure 5 、 Figure 7 and Figure 9 Three different illuminance distributions. In this embodiment, the first light source 130 with a total luminous flux of approximately 400 lm and the second light source 140 with a total luminous flux of approximately 200 lm can be used to respectively form Figure 5 、 Figure 7 and Figure 9 The schematic diagram of the illuminance distribution shown, but the present utility model does not limit this further. Incidentally, in one embodiment, Figure 5 、 Figure 7 and Figure 9 In the schematic diagram of the illuminance distribution, the respective lengths L of the irradiation areas Z1, Z2, and Z3 can be approximately 850 mm, and the respective widths W are, for example, approximately 500 mm, but the present utility model also does not limit this further.
[0072] Figure 10 is the cross-sectional schematic diagram of the lighting device according to another embodiment of the present utility model. The structure and advantages of the lighting device 100a in this embodiment are similar to those of the Figure 1 embodiment, and only the differences will be described below. Please refer to Figure 10 , the lighting device 100a further includes, for example, a light-transmitting plate 160, and the light-transmitting plate 160 is disposed at the light exit O of the housing 110. The light-transmitting plate 160 in this embodiment includes, for example, a transparent plate. In one embodiment, the light-transmitting plate 160 can have a rough surface or diffusion particles added inside, etc., so that it has the function of diffusing light and makes the light emitted by the lighting device 100a more uniform.
[0073] In summary, the lighting device according to the embodiment of the present utility model has at least one of the following advantages. In the lighting device of the present utility model, the main rays of the first light beam and the main rays of the second light beam are reflected to the light exit by the first reflecting surface and the second reflecting surface with different inclinations respectively, so that the main rays of the first light beam and the main rays of the second light beam can exit from the light exit at different angles respectively, thereby providing different illumination ranges respectively. Therefore, the lighting device can provide different illumination ranges according to the activation of the first light source and / or the second light source, not only can save effort and accurately change the illumination angle of the lighting device, but also can ensure that most of the light emitted from the lighting device is incident on the area with lighting requirements, thereby improving the light utilization rate. In addition, since the first light source and the second light source are located in the same accommodation space, therefore, except for the first reflecting surface and the second reflecting surface, there are no other mechanical components in the accommodation space that will significantly change the transmission paths of the first light beam and the second light beam, thereby effectively simplifying the optical path design of the lighting device. Thus, the exit angles of the first light beam and the second light beam can be more easily and accurately adjusted according to different requirements, so that the lighting device of the present utility model can be widely applied.
[0074] However, the above are only the preferred embodiments of the present utility model, and the scope of implementation of the present utility model cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the claims of the present utility model and the content of the utility model still fall within the scope covered by the patent of the present utility model. In addition, any embodiment or claim of the present utility model does not have to achieve all the purposes, advantages or features disclosed in the present utility model. In addition, the abstract and the title (name of the utility model) are only used to assist in the retrieval of patent documents and do not limit the scope of rights of the present utility model. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name the elements or distinguish different embodiments or scopes, rather than to limit the upper or lower limits of the number of elements.
Claims
1. A lighting device, characterized in that, The lighting device includes a housing, a substrate, a plurality of first light sources, a plurality of second light sources, and a reflecting element, wherein: The housing has a light outlet. The substrate is located inside the housing and stands beside the light outlet. The plurality of first light sources are arranged on the substrate in a direction and are used to generate a first light beam. The plurality of second light sources are arranged on the substrate along the direction, and the plurality of second light sources and the plurality of first light sources are arranged side by side on the substrate, and the plurality of second light sources are located between the plurality of first light sources and the light outlet, and the plurality of second light sources are used to generate a second light beam; and The reflecting element is located inside the housing and has a first reflecting surface and a second reflecting surface. The first reflecting surface is located on a side of the substrate away from the light outlet. The second reflecting surface and the substrate are respectively located on opposite side edges of the first reflecting surface, and the first reflecting surface and the second reflecting surface face the light outlet. The second reflecting surface is inclined relative to the first reflecting surface. The plurality of first light sources and the plurality of second light sources are together located in an accommodating space formed by the substrate and the reflecting element. The first reflecting surface is used to reflect the main light ray of the first light beam to the light outlet, and the second reflecting surface is used to reflect the main light ray of the second light beam to the light outlet.
2. The lighting device according to claim 1, characterized in that, The substrate has a first side and a second side, the first side is opposite to the second side, and the second side is fixed beside the light outlet. The plurality of first light sources and the plurality of second light sources are located between the first side and the second side, and the angle between the direction and the side edge of the second side is 0 to 10 degrees.
3. The lighting device according to claim 1, wherein, The second reflecting surface has a first side and a second side, the first side and the second side are opposite, the first side connects a side of the first reflecting surface away from the substrate, and the second side connects the housing and is located on opposite sides of the substrate at the light outlet.
4. The lighting device according to claim 1, characterized in that, The second reflecting surface has opposite first and second sides, the first reflecting surface has opposite third and fourth sides, the first side connects the fourth side, and the third side connects the substrate. The first reflecting surface has a first width between the third side and the fourth side, and the second reflecting surface has a second width between the first side and the second side. The first width is less than the second width.
5. The lighting device according to claim 1, characterized in that, Each of the plurality of second light sources has a top surface facing away from the substrate, and the second reflecting surface overlaps each of the plurality of second light sources in the normal direction of each top surface.
6. The lighting device according to claim 1, characterized in that, The plurality of first light sources and the plurality of second light sources are arranged on the surface of the substrate. A first angle is formed between the first reflecting surface and a normal direction of the surface, and a second angle is formed between the second reflecting surface and the normal direction of the surface. The first angle is less than the second angle.
7. The lighting device according to claim 6, characterized in that, The first angle is between 0° and 50°.
8. The lighting device according to claim 6, characterized in that, The second angle is between 0° and 65°.
9. The lighting device according to claim 1, characterized in that, The first reflecting surface and the second reflecting surface respectively include a plane.
10. The lighting device according to claim 1, characterized in that, The plurality of first light sources and the plurality of second light sources are arranged on a surface of the substrate, and the surface includes a reflecting surface.
11. The lighting device according to claim 1, wherein, The lighting device further includes a light-transmitting plate, and the light-transmitting plate is disposed at the light-emitting port of the housing.
12. The lighting device according to claim 1, wherein The shortest distance between the plurality of first light sources and the light-emitting port is greater than the shortest distance between the plurality of second light sources and the light-emitting port.
13. The lighting device according to claim 1, characterized in that, The first light beam and the second light beam are used to irradiate a reference surface after being emitted from the light-emitting port, and the distance between the center point of the irradiation area of the first light beam on the reference surface and the light-emitting port is greater than the distance between the center point of the irradiation area of the second light beam on the reference surface and the light-emitting port.