Light source assembly and light alarm device

Abstract

The invention relates to the technical field of light source assemblies, and provides a light source assembly and a light alarm device.The light source assembly comprises a scattering lens and a light source structure, a first light source of the light source structure is arranged in a first light source cavity of the scattering lens, and a second light source of the light source structure is arranged in a second light source cavity of the scattering lens; the first light source is configured to project light rays towards the first incident plane in the first direction and emit the light rays outwards from the central light-emitting plane, and the second light source is configured to project light rays towards the second incident plane in the first direction and emit the light rays from the peripheral light-emitting plane after being reflected by the reflecting plane; according to the light source assembly provided by the embodiment of the invention, the light rays emitted by the first light source and the second light source can be emitted outwards from the first end of the scattering lens and the peripheral light-emitting surface of the scattering lens, so that the light-emitting range and the light ray projection angle of the first light source and the second light source can be effectively improved; the alarm range of the light alarm device can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of light source component technology, and in particular provides a light source component and a light alarm device. Background Technology

[0002] In the field of fire alarms, it is necessary to promptly alert people in the surrounding area when danger or a fire occurs, thus raising their awareness. To provide this alert, audible or visual alarms are typically used. For example, a visual siren emits a strong light, accompanied by specific colors and flashing frequencies, to warn people of the impending risk.

[0003] Currently, most common light alarms use LED lights to flash and issue warnings. However, LED flashing has certain drawbacks. For example, the effective light intensity of an LED light typically has a beam angle of less than 120 degrees (i.e., within a 60-degree radius around the LED's front). Outside this effective beam angle (i.e., within a 60-90 degree radius around the LED's front), the light intensity is very low, or even zero. Therefore, when the alarm sounds, some people may be within the LED's blind spot and will not receive the warning information in time, posing a serious safety hazard. Summary of the Invention

[0004] The purpose of this application is to provide a light source component and a light alarm device, which aims to solve the problem that the alarm range of existing light alarms is limited due to the limitation of the effective light intensity and emission angle of LED lights.

[0005] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows: In a first aspect, embodiments of this application provide a light source assembly, including a scattering lens and a light source structure. The scattering lens has a first end and a second end disposed opposite to each other, and a peripheral light-emitting surface connecting the first end and the second end. The first end forms a first light source cavity and a second light source cavity arranged around and spaced apart from the first light source cavity. The bottom surface of the first light source cavity forms a first incident surface, and the bottom surface of the second light source cavity forms a second incident surface. At least a portion of the second end has a concave structure, and the second end includes a central light-emitting surface located in the middle of the concave structure and a reflective surface arranged around the central light-emitting surface. The light source structure includes a circuit board, a first light source, and a second light source. The first end of the scattering lens is disposed on the circuit board, the first light source is disposed on the circuit board and located in the first light source cavity, and the second light source is disposed on the circuit board and located in the second light source cavity. The light emission directions of the first light source and the second light source are both along a first direction and toward the first end. The first light source is configured to project light toward the first incident surface along the first direction and emit light outward from the central light-emitting surface, and the second light source is configured to project light toward the second incident surface along the first direction and emit light from the peripheral light-emitting surface after reflection by the reflective surface.

[0006] The beneficial effects of the embodiments of this application are as follows: The light source assembly provided in this application uses a circuit board to control the first light source and the second light source to emit light. The first light source is placed in the first light source cavity, and the second light source is placed in the second light source cavity. In this way, the light emitted by the first light source can be projected along the first direction and toward the first incident surface, so that the light can be emitted outward from the central emitting surface. At the same time, the light emitted by the second light source can be projected along the first direction and toward the second incident surface, so that the light can propagate in the scattering lens and be reflected by the reflecting surface, so that the light projected by the second light source along the first direction can be emitted outward from the peripheral emitting surface of the scattering lens. In this way, the light can be emitted outward from the first end of the scattering lens and the peripheral emitting surface of the scattering lens, thereby effectively improving the emitting range and light projection angle of the first light source and the second light source. When the light source assembly is used in a light alarm device, it can effectively improve the alarm range of the light alarm device.

[0007] In some embodiments, the first incident surface is a concave arc surface, and the central emitting surface is a concave arc surface.

[0008] In some embodiments, the radius of the central emitting surface is smaller than the radius of the first incident surface.

[0009] In some embodiments, the second incident surface is a plane, and the reflecting surface is a plane; the height of the inner wall of the second light source cavity on the side closest to the peripheral light-emitting surface is less than the height of the inner wall of the second light source cavity on the other side away from the peripheral light-emitting surface.

[0010] In some embodiments, a first included angle α is formed between the second incident surface and the circuit board, 25°≤α≤35°; and / or, a second included angle β is formed between the reflective surface and the circuit board, 35°≤β≤45°.

[0011] In some embodiments, the peripheral light-emitting surface is a concave arc surface.

[0012] In some embodiments, the peripheral light-emitting surface has a planar structure.

[0013] In some embodiments, a third included angle γ is formed between the peripheral light-emitting surface and the circuit board, where 80°≤γ≤90°.

[0014] Secondly, this application also provides a light alarm device, which includes a housing and a light source assembly as described above. The housing includes a base, a front shell, and a light-transmitting cover. The circuit board of the light source assembly is mounted on the base, the front shell is disposed on the base, and at least a portion of the scattering lens of the light source assembly is exposed on the front shell. The light-transmitting cover is disposed on the scattering lens.

[0015] The beneficial effects of the embodiments of this application are as follows: The light alarm device provided in the embodiments of this application includes the above-mentioned light source component. When the above-mentioned light source component enables the angle and range of the light projected by the first light source and the second light source to be larger, the alarm range of the light alarm device is larger.

[0016] In some embodiments, the light alarm device further includes a buzzer, with a sound-emitting part provided on the front housing, the buzzer being disposed between the base and the front housing, and the buzzer facing the sound-emitting part. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the light source assembly provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the first end of the scattering lens provided in an embodiment of this application; Figure 3 A cross-sectional view of a light source assembly provided in an embodiment of this application; Figure 4 A cross-sectional view of another light source assembly provided in an embodiment of this application; Figure 5 A schematic diagram showing the distribution of light trajectories of the light source assembly provided in the embodiments of this application; Figure 6 This is a schematic diagram of the overall structure of the optical alarm device provided in the embodiments of this application; Figure 7 This is a schematic diagram of the internal structure of the optical alarm device provided in the embodiments of this application.

[0019] The following are the labeling elements in the figure: 1000. Light alarm device; 100. Light source assembly; 10. Scattering lens; 10a. First end; 10b. Second end; 10c. Peripheral light-emitting surface; 11. First light source cavity; 111. First incident surface; 12. Second light source cavity; 121. Second incident surface; 13. Central light-emitting surface; 14. Reflecting surface; 20. Light source structure; 21. First light source; 22. Second light source; 23. Circuit board; 200. Housing; 210. Base; 220. Front housing; 230. Light-transmitting cover; 300. Buzzer; X, the first direction. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0021] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In the field of fire alarms, it is necessary to promptly alert people in the vicinity when danger or fire occurs. To provide this alert, audible or visual alarms are commonly used. For example, a visual siren emits a strong light with specific colors and flashing frequencies to warn people of the potential danger. Currently, common visual siren systems primarily use LED lights to emit flashing signals. However, LED flashing has certain drawbacks. For instance, the effective light intensity of an LED light typically has a beam angle of less than 120 degrees (i.e., within a 60-degree radius around the LED's front axis). Outside this effective beam angle (i.e., within a 60-90 degree radius around the LED's front axis), the light intensity is very low, even zero. Thus, when the siren sounds, some people may be within the LED's blind spot and will not receive the alarm information in time, posing a serious safety hazard.

[0025] Based on the above considerations, in order to solve the problem that the alarm range of existing light alarms is limited by the effective light intensity and emission angle of LED lights, a light source assembly is designed. This assembly uses a circuit board to control the emission of light from a first light source and a second light source. The first light source is placed inside a first light source cavity, and the second light source is placed inside a second light source cavity. Thus, the light emitted by the first light source can be projected along a first direction towards a first incident surface, allowing the light to exit outward from the central emitting surface. Simultaneously, the light emitted by the second light source can be projected along the first direction towards a second incident surface, allowing the light to propagate in a scattering lens and be reflected by a reflecting surface, so that the light projected by the second light source along the first direction can exit from the peripheral emitting surface of the scattering lens. This allows light to exit outward from both the first end of the scattering lens and its peripheral emitting surface, effectively improving the emission range and projection angle of both the first and second light sources. When this light source assembly is used in a light alarm device, it can effectively increase the alarm range of the device.

[0026] The light source components provided in the embodiments of this application will now be described in detail.

[0027] Please refer to Figures 1 to 5In a first aspect, embodiments of this application provide a light source assembly 100, including a scattering lens 10 and a light source structure 20. The scattering lens 10 has a first end 10a and a second end 10b disposed opposite to each other, and a peripheral light-emitting surface 10c connecting the first end 10a and the second end 10b. The first end 10a forms a first light source cavity 11 and a second light source cavity 12 disposed around and spaced apart from the first light source cavity 11. The bottom surface inside the first light source cavity 11 forms a first incident surface 111, and the bottom surface inside the second light source cavity 12 forms a second incident surface 121. At least a portion of the second end 10b has a concave structure, and the second end 10b includes a central light-emitting surface 13 located in the middle of the concave structure and a peripheral light-emitting surface 13 disposed around the central light-emitting surface. The reflective surface 14 of 13; the light source structure 20 includes a circuit board 23, a first light source 21 and a second light source 22, the first end 10a of the scattering lens 10 is disposed on the circuit board 23, the first light source 21 is disposed on the circuit board 23 and located in the first light source cavity 11, the second light source 22 is disposed on the circuit board 23 and located in the second light source cavity 12, the light emission direction of the first light source 21 and the second light source 22 are both along the first direction X and toward the first end 10a; the first light source 21 is configured to project light toward the first incident surface 111 along the first direction X and emit light outward from the central light-emitting surface 13, the second light source 22 is configured to project light toward the second incident surface 121 along the first direction X and emit light from the peripheral light-emitting surface 10c after being reflected by the reflective surface 14.

[0028] Here, the scattering lens 10 refers to an optical lens structure used to change the direction and distribution of light propagation. Optionally, the scattering lens 10 can be made of materials with good optical properties, such as polymethyl methacrylate.

[0029] The first end 10a of the scattering lens 10 refers to the end facing the light source structure 20, that is, the light emitted from the light source structure 20 can enter the scattering lens 10 from the first end 10a.

[0030] Correspondingly, the second end 10b of the scattering lens 10 refers to the opposite end from the light source structure 20. After the light emitted from the light source structure 20 enters the scattering lens 10, part of it can be emitted outward from the second end 10b.

[0031] The first end 10a has a first light source cavity 11 and a second light source cavity 12 disposed around and spaced apart from the first light source cavity 11. Understandably, the first light source cavity 11 and the second light source cavity 12 refer to cavity structures formed by recesses from the first end 10a into the scattering lens 10. In some embodiments, the first light source cavity 11 may be located at the center of the first end 10a, and the second light source cavity 12 may be disposed around the first light source cavity 11. Optionally, the second light source cavity 12 may be disposed around the first light source cavity 11 in a ring shape; or, the second light source cavity 12 may have an arc-shaped segment structure.

[0032] At least a portion of the second end 10b has a concave structure, and the second end 10b includes a central light-emitting surface 13 located in the middle of the concave structure and a reflective surface 14 surrounding the central light-emitting surface 13.

[0033] Understandably, the central light-emitting surface 13 is used in conjunction with the first light source cavity 11. When the first light source 21 in the first light source cavity 11 projects light in the first direction X toward the first incident surface 111, the light projected by the first light source 21 can be emitted outward from the central light-emitting surface 13.

[0034] Meanwhile, the reflective surface 14 is used in conjunction with the second light source cavity 12. When the second light source 22 in the second light source cavity 12 projects light toward the second incident surface 121 along the second direction, the light projected by the second light source 22 can enter the scattering lens 10 and be set by the reflective surface 14, and then be emitted toward the peripheral light-emitting surface 10c and outward.

[0035] Thus, by partitioning the first light source cavity 11 and the second light source cavity 12, and by placing the first light source 21 and the second light source 22 in the first light source cavity 11 and the second light source cavity 12 respectively and projecting light into them, the scattering lens 10 can simultaneously project light outward from the second end 10b and the peripheral light-emitting surface 10c. Compared to the effective light-emitting range of the first light source 21 and the second light source 22, whose own light-emitting angle is within 120° (i.e., 60° around the axial direction directly in front of the first light source 21 and the second light source 22), the light-emitting angle and light-emitting range of the light projected by the first light source 21 and the second light source 22 through the scattering lens 10 can be effectively improved.

[0036] The light source structure 20 includes a circuit board 23, a first light source 21, and a second light source 22; wherein the first light source 21 and the second light source 22 may be, but are not limited to, structures capable of emitting light such as LEDs. By placing the first light source 21 and the second light source 22 on the circuit board 23 and electrically connecting them to the circuit board 23, the conductive light-emitting operation of the first light source 21 and the second light source 22 can be controlled by the circuit board 23.

[0037] The aforementioned first direction X refers to the orientation of the first light source 21 and the second light source 22, that is, the first light source 21 and the second light source 22 are positioned directly in front of the first direction X. In some embodiments, the first direction X may also be the direction of the central axis of the scattering lens 10.

[0038] The light source assembly 100 provided in this application embodiment uses a circuit board 23 to control the first light source 21 and the second light source 22 to emit light. The first light source 21 is placed in the first light source cavity 11, and the second light source 22 is placed in the second light source cavity 12. Thus, the light emitted by the first light source 21 can be projected along the first direction X toward the first incident surface 111, so that the light can be emitted outward from the central light-emitting surface 13. At the same time, the light emitted by the second light source 22 can be projected along the first direction X toward the second incident surface 121, so that the light can propagate in the scattering lens 10 and be reflected by the reflecting surface 14, so that the light projected by the second light source 22 along the first direction X can be emitted from the peripheral light-emitting surface 10c of the scattering lens 10. In this way, the light can be emitted outward from the first end 10a of the scattering lens 10 and the peripheral light-emitting surface 10c of the scattering lens 10, thereby effectively improving the light emission range and light projection angle of the first light source 21 and the second light source 22. When the light source assembly 100 is used in a light alarm device, it can effectively improve the alarm range of the light alarm device.

[0039] Please refer to Figures 1 to 5 In some embodiments, the first incident surface 111 is a concave arc surface, and the central emitting surface 13 is a concave arc surface.

[0040] In this embodiment, the first incident surface 111 is set as a concave arc surface. In this way, when the first light source 21 emits light in the first direction X, the first light source 21 projects light in a certain divergent manner along the first direction X. Therefore, the first incident surface 111 with a concave arc surface can effectively reduce the reflection effect on the divergently projected light.

[0041] It should be understood that, in some embodiments, the effective light ray projected by the first light source 21 and the first direction X generally form an angle range within 60°.

[0042] Meanwhile, in this embodiment, the central luminous surface 13 is also a concave arc surface; thus, when the light projected by the first light source 21 enters the scattering lens 10, the light can be projected outward through the concave arc surface 13 and form a certain refraction, thereby making the light more scattered and finally forming an extended beam of light, so as to improve the refraction angle and coverage of the effective light intensity of the first light source 21.

[0043] Optionally, in some embodiments, in any projection plane perpendicular to the first direction X, the orthographic projection of the central emitting surface 13 includes the orthographic projection of the first incident surface 111, so that all the light rays from the first light source 21 incident from the first incident surface 111 can be scattered outward through the central emitting surface 13.

[0044] Please refer to Figures 1 to 5 In some embodiments, the radius of the central emitting surface 13 is smaller than the radius of the first incident surface 111.

[0045] In this embodiment, the radius of the central light-emitting surface 13 can be set to be smaller than the radius of the first incident surface 111. In this way, the scattering range formed by the light emitted outward through the central light-emitting surface 13 is larger, thereby further improving the refraction angle and coverage of the effective light intensity of the first light source 21.

[0046] Please refer to Figures 1 to 5 In some embodiments, the second incident surface 121 is a plane, and the reflecting surface 14 is a plane; the height of the inner wall of the second light source cavity 12 on the side closer to the peripheral light-emitting surface 10c is less than the height of the inner wall of the second light source cavity 12 on the other side away from the peripheral light-emitting surface 10c.

[0047] In this embodiment, the second incident surface 121 can be a plane, and the height of the inner wall of the second light source cavity 12 on the side closer to the peripheral light-emitting surface 10c is less than the height of the inner wall of the second light source cavity 12 on the other side away from the peripheral light-emitting surface 10c; that is, the side of the second incident surface 121 closer to the center of the first end 10a is inclined toward the inside of the scattering lens 10.

[0048] Thus, when the second light source 22 emits light in the first direction X, the second light source 22 projects light in a certain divergent manner along the first direction X, and the divergent light can be projected into the scattering lens 10 in a divergent manner through the second incident surface 121.

[0049] Meanwhile, the reflective surface 14 is planar, and the reflective surface 14 is the portion of the second end 10b that is concave and surrounded by the central light-emitting surface 13. Therefore, the light from the second light source 22, passing through the second incident surface 121 and entering the scattering lens 10, will be projected obliquely onto the reflective surface 14, so that the light can be reflected off the center of the second end 10b, i.e., towards the peripheral light-emitting surface 10c, and then projected outward from the peripheral light-emitting surface 10c. Thus, the light emitted by the second light source 22 along the first direction X can be projected outward from the peripheral light-emitting surface 10c at a large angle deviating from the first direction X under the action of the scattering lens 10, for example, at large angles of 60°, 65°, 70°, 75°, 80°, 85°, 90°, etc., with respect to the first direction X, thereby enabling the second light source 22 to further enhance the effective light intensity coverage range of the light source assembly 100.

[0050] Optionally, in some embodiments, in any projection plane perpendicular to the first direction X, the orthographic projection of the reflecting surface 14 includes the orthographic projection of the second incident surface 121, so that as much light from the second light source 22 as is incident on the second incident surface 121 can be projected onto the reflecting surface 14 and reflected.

[0051] Please refer to Figures 1 to 5 In some embodiments, a first included angle α is formed between the second incident surface 121 and the circuit board 23, 25°≤α≤35°; and / or, a second included angle β is formed between the reflecting surface 14 and the circuit board 23, 35°≤β≤45°.

[0052] In this embodiment, the first included angle α formed between the second incident surface 121 and the circuit board 23 is as follows: Figure 3 As shown; optionally, the specific angle of the first included angle α can be, but is not limited to, various angle sizes such as 25°, 27°, 29°, 30°, 31°, 32°, 33°, 35°, etc.

[0053] Thus, within the range of the first included angle α, the reflection effect of the second incident surface 121 on the light emitted from the second light source 22 is low, and the light emitted from the second light source 22 can be projected onto the reflecting surface 14 more after passing through the second incident surface 121 to form reflection.

[0054] In this embodiment, the second included angle β formed between the reflective surface 14 and the circuit board 23 is as follows: Figure 3 As shown; optionally, the specific angle of the second included angle β can be, but is not limited to, various angle sizes such as 35°, 37°, 39°, 40°, 41°, 42°, 43°, 45°, etc.

[0055] Thus, within the range of the second included angle β, the reflecting surface 14 is able to reflect more of the light rays incident from the second incident surface 121.

[0056] For example, in some embodiments, the first included angle α can be 30° and the corresponding second included angle β can be 40°. In this case, after the second light source 22 projects light towards the second incident surface 121 along the first direction X, the light can be reflected more by the reflecting surface 14 and scattered outward by the peripheral light-emitting surface 10c, so as to further improve the refraction angle and coverage of the effective light intensity of the light source assembly 100.

[0057] Please refer to Figures 1 to 3 In some embodiments, the peripheral light-emitting surface 10c is a concave arc surface.

[0058] In this embodiment, the peripheral light-emitting surface 10c can be configured as a concave arc surface. In this way, when light passes through the peripheral light-emitting surface 10c, the light can be further scattered, thereby further improving the refraction angle and coverage of the effective light intensity of the light source assembly 100.

[0059] Please refer to Figure 1 , Figure 2 and Figure 4 In some embodiments, the peripheral light-emitting surface 10c has a planar structure.

[0060] In this embodiment, by setting the peripheral light-emitting surface 10c as a planar structure, light can be directly projected outward when passing through the peripheral light-emitting surface 10c, or projected outward at a certain refraction angle.

[0061] Please refer to Figure 4 In some embodiments, a third included angle γ is formed between the peripheral light-emitting surface 10c and the circuit board 23, where 80°≤γ≤90°.

[0062] Among them, the third included angle γ formed between the peripheral light-emitting surface 10c and the circuit board 23 is as follows: Figure 4 As shown; optionally, the specific angle of the third included angle γ can be, but is not limited to, various angle sizes such as 80°, 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 89°, 90°, etc.

[0063] Thus, within the range of the third included angle γ, the light reflected by the reflecting surface 14 to the peripheral light-emitting surface 10c can form an approximately perpendicular angle with the peripheral light-emitting surface 10c. This can effectively reduce the reflection effect of the peripheral light-emitting surface 10c on the light, thereby reducing the influence on the light intensity of the emitted light.

[0064] Please refer to Figures 1 to 7Secondly, this application also provides a light alarm device 1000, which includes a housing 200 and a light source assembly 100 as described above. The housing 200 includes a base 210, a front shell 220 and a light-transmitting cover 230. The circuit board 23 of the light source assembly 100 is mounted on the base 210. The front shell 220 covers the base 210, and at least a portion of the scattering lens 10 of the light source assembly 100 is exposed on the front shell 220. The light-transmitting cover 230 covers the scattering lens 10.

[0065] The light source assembly 100 can be installed inside the housing 200. Specifically, the circuit board 23 of the light source assembly is installed on the base 210, so that when the front housing 220 is placed on the base 210, the front housing 220 can also cover part of the scattering lens 10, so that the front housing 220 covers part of the scattering lens 10, and the part of the scattering lens 10 exposed outside the front housing 220 is used to project light to form a light alarm.

[0066] It should be understood that in some embodiments, the scattering lens 10 may also be fully exposed outside the front housing 220 and used to project light to form a light alarm.

[0067] A light-transmitting cover 230 is mounted on the scattering lens 10. Optionally, the light-transmitting cover 230 can be installed on the front housing 220 by means of bonding, hinge, fastener connection, etc., and thus cover the scattering lens 10. The light-transmitting cover 230 is used to protect the scattering lens 10, while allowing light to pass through.

[0068] With this configuration, the light alarm device 1000 provided in this application embodiment includes the aforementioned light source component 100. When the aforementioned light source component 100 enables the angle and range of the light projected by the first light source 21 and the second light source 22 to be larger, the alarm range of the light alarm device is larger.

[0069] Please refer to Figure 6 and Figure 7 In some embodiments, the light alarm device 1000 further includes a buzzer 300, with a sound output 221 provided on the front housing 220, and the buzzer 300 disposed between the base 210 and the front housing 220, with the buzzer 300 directly opposite the sound output 221.

[0070] In this embodiment, a buzzer 300 can be further provided between the base 210 and the front shell 220, and the buzzer 300 is positioned directly opposite the sound output part 221 of the front shell 220; in this way, the buzzer 300 can also provide an audible alarm at the same time, so as to further enhance the warning effect.

[0071] It should be understood that the aforementioned sound-emitting part 221 refers to the part for sound to penetrate and propagate. Optionally, in some embodiments, the sound-emitting part 221 may be, but is not limited to, a perforated structure, a grille structure, etc., provided on the front housing 220.

[0072] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A light source assembly, characterized by include: A scattering lens having a first end and a second end disposed opposite to each other, and a peripheral light-emitting surface connecting the first end and the second end; The first end has a first light source cavity and a second light source cavity arranged in a ring around the first light source cavity and spaced apart from the first light source cavity. The bottom surface of the first light source cavity forms a first incident surface, and the bottom surface of the second light source cavity forms a second incident surface. At least a portion of the second end has a concave structure, and the second end includes a central light-emitting surface located in the middle of the concave structure and a reflective surface arranged in a ring around the central light-emitting surface. as well as The light source structure includes a circuit board, a first light source, and a second light source. The first end of the scattering lens is disposed on the circuit board. The first light source is disposed on the circuit board and located within the first light source cavity. The second light source is disposed on the circuit board and located within the second light source cavity. The light emission directions of both the first and second light sources are along a first direction and towards the first end. The first light source is configured to project light along the first direction toward the first incident surface and emit light outward from the central light-emitting surface. The second light source is configured to project light along the first direction toward the second incident surface and emit light from the peripheral light-emitting surface after reflection by the reflecting surface.

2. The light source assembly of claim 1, wherein: The first incident surface is a concave arc surface, and the central emitting surface is also a concave arc surface.

3. The light source assembly according to claim 2, characterized in that: The radius of the central luminescent surface is smaller than the radius of the first incident surface.

4. The light source assembly according to any one of claims 1 to 3, characterized in that: The second incident surface is a plane, and the reflecting surface is a plane; the height of the inner wall of the second light source cavity on the side closest to the peripheral light-emitting surface is less than the height of the inner wall of the second light source cavity on the other side away from the peripheral light-emitting surface.

5. The light source assembly according to claim 4, characterized in that: The second incident surface forms a first included angle α with the circuit board, 25°≤α≤35°; and / or, the reflective surface forms a second included angle β with the circuit board, 35°≤β≤45°.

6. The light source assembly according to claim 1 or 5, characterized in that: The peripheral light-emitting surface is a concave arc surface.

7. The light source assembly according to claim 1 or 5, characterized in that: The peripheral light-emitting surface has a planar structure.

8. The light source assembly according to claim 7, characterized in that: The peripheral light-emitting surface forms a third included angle γ with the circuit board, where 80°≤γ≤90°.

9. A light alarm device, characterized in that: The light alarm device includes a housing and a light source assembly as described in any one of claims 1 to 8. The housing includes a base, a front shell, and a light-transmitting cover. The circuit board of the light source assembly is mounted on the base. The front shell covers the base, and at least a portion of the scattering lens of the light source assembly is exposed on the front shell. The light-transmitting cover covers the scattering lens.

10. The optical alarm device according to claim 9, characterized in that: The light alarm device also includes a buzzer. A sound-emitting part is provided on the front shell. The buzzer is located between the base and the front shell, and the buzzer is directly opposite the sound-emitting part.

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