Light distribution module, lamp body structure and lamp

Abstract

The utility model provides a light distribution module, a lamp body structure and a lamp. The light distribution module comprises a light source assembly which comprises a light source plate and a light emitting part arranged on the light source plate; the scattering modulation part is arranged in the light emitting direction of the light emitting part and comprises a substrate and a microstructure array arranged on the substrate; one end of the reflection light guide part is connected with the light source plate, and the other end of the reflection light guide part is connected with the light emitting surface; light emitted by the light-emitting part is scattered by the micro-structure array and reflected by the reflection light guide part and then is guided out through the light-emitting surface. According to the utility model, the light emitted by the light-emitting part is dispersed to all directions through the microstructure array, so that the surface brightness of dazzling highlight points of the light-emitting surface is weakened, and meanwhile, the harm of blue light is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting technical field especially, relate to a light distribution module, lamp body structure and lamps and lanterns. BACKGROUND

[0002] As a common lighting appliance in people's life, desk lamps are widely used in areas such as desks and bedside tables, mainly serving scenes such as learning, reading and working. In terms of creating a high-quality and comfortable light environment, desk lamps must reach the RG0 blue light hazard level. This is because blue light hazards have many adverse effects on the human body. Taking students as an example, they use desk lamps for a long time when learning, and children's lenses are clear, making it difficult to effectively resist blue light. Harmful blue light has high energy and is irreversible, can penetrate the lens and reach the retina in a short time, and then cause children's macular degeneration and cataracts. At the same time, harmful blue light also causes visual fatigue, deepens myopia, and makes it difficult to concentrate, affecting learning and work efficiency. In addition, blue light hazards can inhibit the secretion of melatonin and interfere with people's circadian rhythm.

[0003] At present, most desk lamps on the market usually use the following three methods to reduce blue light hazards and achieve glare prevention: first, a diffusion plate is used on the light-emitting surface to make the light uniform and soft; second, a bead surface microstructure prism plate is used to mix light to achieve uniform light; third, a pyramid microstructure prism plate is used to control light, reduce the intensity of large-angle light, and achieve glare prevention. However, these methods have certain limitations and cannot completely meet people's demand for high-quality light environment.

[0004] Therefore, it is necessary to improve the existing lamps to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a light distribution module which can effectively filter out the glare highlight of the light-emitting surface, reduce harmful blue light, and improve the visual effect of the light-emitting surface.

[0006] To achieve the above-mentioned purpose, the utility model provides a light distribution module, which comprises:

[0007] A light source assembly comprises a light source plate and a light-emitting piece arranged on the light source plate;

[0008] A scattering modulation piece is arranged in the light-emitting direction of the light-emitting piece and comprises a substrate and a microstructure array arranged on the substrate;

[0009] A reflective light guide piece is arranged in the light-emitting direction of the light-emitting piece and connected to the light source plate at one end and the light-emitting surface at the other end;

[0010] The light emitted by the light-emitting piece is scattered by the microstructure array and reflected by the reflective light guide piece and then guided out of the light-emitting surface.

[0011] Optionally, the microstructure array comprises a plurality of trapezoidal prism units, each trapezoidal prism unit comprises mutually parallel first and second faces and a third face connecting the first and second faces, the first face is attached to the substrate, and the first face and the third face have a cross-sectional included angle, the cross-sectional included angle is an acute angle.

[0012] Optionally, the cross-sectional included angle ranges from 40° to 80°.

[0013] Optionally, the light source plate and the light emitting piece are both arranged in a rectangular shape, and in the length direction of the light source plate, the length of the first face is less than the length of the light emitting piece.

[0014] Optionally, the ratio of the length of the first face to the length of the light emitting piece is between 5 / 12 and 1 / 2.

[0015] Optionally, the scattering modulation piece is accommodated in an optical cavity formed by the light source plate, the light exit face and the reflective light guide piece, the trapezoidal cross section of the trapezoidal prism unit is parallel to the light exit face in the optical cavity, the first face faces the light emitting piece, and the second face faces away from the light emitting piece, part of the light emitted by the light emitting piece is scattered by the microstructure array and then shot towards the light exit face, and the rest of the light is reflected by the reflective light guide piece to the light exit face and then shot out.

[0016] Optionally, the scattering modulation piece is arranged close to the light exit face, the light emitted by the light emitting piece is reflected by the reflective light guide piece to the scattering modulation piece, and then scattered by the scattering modulation piece to the light exit face and then shot out.

[0017] Optionally, the included angle between the light source plate and the light exit face is greater than 90°.

[0018] Another purpose of the utility model lies in providing a lamp body structure comprising the light distribution module.

[0019] To achieve the above purpose, the utility model provides a lamp body structure, which comprises:

[0020] The light distribution module;

[0021] A lamp main body, wherein the light distribution module is assembled in the lamp main body.

[0022] Another purpose of the utility model lies in providing a lamp comprising the lamp body structure.

[0023] To achieve the above purpose, the utility model provides a lamp, which comprises:

[0024] The lamp body structure;

[0025] A lamp pole, which is hingedly connected to the lamp main body and can rotate relative to the lamp main body;

[0026] A base, which is connected to the lamp pole through a support.

[0027] The utility model has the advantages of:

[0028] The light distribution module utilizes the microstructure array on the scattering modulation piece to scatter the light emitted by the light emitting piece, so that the light energy is weakened and the direction is scattered, thereby avoiding the formation of energy convergence points on the light emitting surface, and further effectively filtering out the glare highlight points on the light emitting surface, improving the visual effect, reducing the harm of harmful blue light to the human body, and without causing the uniformity of the whole lamp to decrease, and ensuring the lighting quality of the lamp. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic diagram of a lamp in accordance with the preferred embodiment of the present application;

[0030] Figure 2 is Figure 1 is an internal structure schematic diagram of a lamp body of the lamp shown in the figure;

[0031] Figure 3 is Figure 2 is an assembly schematic diagram of the scattering modulation piece and the light emitting piece in the figure;

[0032] Figure 4 is Figure 3 is a top view of the trapezoidal prism unit in the figure;

[0033] Figure 5 is Figure 2 is a light path diagram of the inside of the lamp body shown in the figure;

[0034] Figure 6 is a light path diagram of the inside of the lamp body in accordance with the second embodiment of the present application.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 100 - lamp;

[0037] 110 - lamp body, 1101 - light emitting surface, 111 - base, 112 - support;

[0038] 120 - light source assembly, 1201 - light source plate, 1202 - light emitting piece;

[0039] 130 - scattering modulation piece, 1301 - substrate, 1302 - microstructure array, 1303 - trapezoidal prism unit, 1321 - first surface, 1322 - second surface, 1323 - third surface;

[0040] 140 - reflection light guide piece, 1401 - first reflection part, 1402 - second reflection part;

[0041] 150 - optical cavity. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in detail below in combination with the drawings and specific embodiments.

[0043] Here, it needs to be explained that, in order to avoid the utility model from being obscured by unnecessary details, only the structures and / or processing steps closely related to the scheme of the utility model are shown in the drawings, and other details not closely related to the utility model are omitted.

[0044] In addition, it also needs to be explained that the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0045] The utility model provides a lamp 100, it can effectively filter out the dazzling highlight of light surface 1101, weaken harmful blue light, promote the visual effect of light surface 1101, guarantee the illumination quality of whole lamp, provide comfortable light environment for user.

[0046] As Figures 1-2 Shown, lamp 100 includes lamp body structure, base 111, support 112 and lamp pole (not shown). Lamp body structure includes lamp main body 110 and light distribution module, and light distribution module is assembled in lamp main body 110. Lamp pole is hinged with lamp main body 110, so that lamp main body 110 can rotate relative to lamp pole to provide illumination in different directions. Base 111 is connected with lamp pole through support 112 and provides support for the whole lamp body structure. Light distribution module includes light source assembly 120, scattering modulation piece 130 and reflection light guide piece 140.

[0047] Lamp main body 110 is provided with light surface 1101. The light emitted by light source assembly 120 is emitted from light surface 1101 after scattering modulation piece 130 and reflection light guide piece 140.

[0048] The light source assembly 120 is assembled inside the lamp body 110, including a light source plate 1201 and a light-emitting element 1202 disposed on the light source plate 1201. Both the light source plate 1201 and the light-emitting element 1202 are rectangular. In this embodiment, the light source plate 1201 is tilted backward, that is, the angle α between the light source plate 1201 and the light-emitting surface 1101 is greater than 90°. With this arrangement, the light emitted by the light-emitting element 1202 can undergo multiple refractions and reflections inside the lamp 100 before reaching the light-emitting surface 1101, which further disperses the energy and reduces the possibility of glare or bright spots appearing on the light-emitting surface 1101. For example, when the user uses the lamp 100 normally, the eyes will not be directly stimulated by strong light, effectively improving the anti-glare effect and protecting the user's eyesight. At the same time, it allows light to be directed at a larger angle to the scattering modulator 130 and the reflecting light guide 140, creating more favorable conditions for the refraction and reflection of subsequent light, which helps the light to spread more evenly inside the lamp 100 and avoids the light being too concentrated in certain areas.

[0049] First embodiment:

[0050] The scattering modulator 130 is housed in an optical cavity 150 formed by the light source plate 1201, the light emitting surface 1101 and the reflective light guide 140, and is positioned in the light emitting direction of the light emitting element 1202.

[0051] The reflective light guide 140 is also positioned in the light-emitting direction of the light-emitting element 1202, with one end connected to the light source plate 1201 and the other end connected to the light-emitting surface 1101, used to reflect the light entering the reflective light guide 140. Within the optical cavity 150, the direction of the light emitted from the light-emitting element 1202 is adjusted, and through reflection, the light can be more effectively directed towards the light-emitting surface 1101. The light reflected by the reflective light guide 140 is further mixed and dispersed during the reflection process, improving the uniformity of the light when it exits from the light-emitting surface 1101, avoiding localized overly bright or dark areas, and providing a more comfortable lighting environment for the user.

[0052] In this embodiment, as Figure 5 As shown, the scattering modulator 130 is positioned perpendicular to the light-emitting surface 1101 within the optical cavity 150. At this time, some of the light emitted from the light-emitting element 1202 directly illuminates the scattering modulator 130. After being refracted and having its propagation direction changed by the scattering modulator 130, the light then enters the reflecting light guide 140 and is reflected back to the light-emitting surface 1101. This process causes the light to change direction multiple times within the luminaire 100, lengthening the light propagation path. Through multiple refractions and reflections, the energy of the light gradually disperses, preventing the formation of an energy convergence point on the light-emitting surface 1101, thus reducing glare. Of course, the light scattered from the scattering modulator 130 may also be directly scattered to the light-emitting surface 1101 and emitted.

[0053] Further, in the present embodiment, as shown in Figure 5 The light emitted by the light emitting member 1202 is emitted to the first side and the second side respectively with the optical axis as the center. The first side is the side of the light emitting member 1202 close to the first reflecting part 1401, and the second side is the side of the light emitting member 1202 away from the first reflecting part 1401. The light emitted by the light emitting member 1202 toward the first side is directly irradiated to the first reflecting part 1401, reflected by the first reflecting part 1401 to the scattering modulation member 130, scattered by the scattering modulation member 130 to the second reflecting part 1402, and finally reflected to the light exit surface 1101 from the second reflecting part 1402 to be emitted. Thus, the light is reflected and scattered by the first reflecting part 1401, the scattering modulation member 130 and the second reflecting part 1402 in turn, so that the light originally concentrated on the first side can be uniformly distributed to the light exit surface 1101 by multiple reflections and scattering among different components, the occurrence of local bright spots or dark areas is reduced, and the uniformity of light emission is improved. The light emitted by the light emitting member 1202 toward the second side is directly irradiated to the scattering modulation member 130, and forms scattered light after passing through the scattering modulation member 130. Then, part of the light is reflected to the light exit surface 1101 by the second reflecting part 1402 to be emitted, and the other part of the light is directly scattered to the light exit surface 1101 to be emitted. Thus, the light can be emitted from different angles, the light emission angle is optimized, the light emission range is expanded, the light can be uniformly distributed in a wider area, and the uniformity and coverage of illumination are improved.

[0054] Second embodiment:

[0055] As shown in Figure 6 The scattering modulation member 130 is arranged close to the light exit surface 1101 in the present embodiment. At this time, the light emitted by the light emitting member 1202 is first emitted to the reflecting light guide member 140, then reflected by the reflecting light guide member 140 to the scattering modulation member 130, and finally scattered by the scattering modulation member 130 to the light exit surface 1101 to be emitted. Thus, the light energy can be dispersed, and the purpose of reducing glare and bright spots is achieved. Compared with the first embodiment, the only difference is that the arrangement position of the scattering modulation member 130 is changed, and the structures of the scattering modulation member 130 and the reflecting light guide member 140 are the same. The structure of the scattering modulation member 130 and the reflecting light guide member 140 will be described in detail below with the first embodiment as an example.

[0056] As shown in Figures 2-3As shown, the scattering modulator 130 includes a substrate 1301 and a microstructure array 1302 disposed on the substrate 1301. The substrate 1301 is a transparent plate, which can effectively reduce the absorption of light, ensure that light can pass smoothly through the substrate 1301 and be fully scattered by the microstructure array 1302, thereby improving the luminous efficacy of the lamp 100.

[0057] The microstructure array 1302 scatters the light incident on the scattering modulator 130, dispersing the concentrated light into multiple directions. For example, light originally concentrated on a certain area is dispersed evenly after scattering, thus reducing the glare and high brightness of the light-emitting surface 1101, improving the visual effect of the light-emitting surface 1101 of the lamp 100, and reducing the strong light stimulation to the user's eyes. Furthermore, during the process of scattering light energy by the microstructure array 1302, the energy of harmful blue light is also dispersed. Without changing the established optical cavity 150 and existing optical components, the scattered light is reflected by the reflective light guide 140 and emitted from the light-emitting surface 1101, ensuring the uniformity of the entire lamp's illumination.

[0058] by Figure 3 For example, the microstructure array 1302 provided in this embodiment is formed by a number of trapezoidal prism units 1303 arranged in a sequential array along the length direction of the substrate 1301, and the trapezoidal cross section of each trapezoidal prism unit 1303 is parallel to the light-emitting surface 1101 in the optical cavity 150.

[0059] Specifically, Figure 4 A cross-sectional view of the trapezoidal prism unit 1303 from a top view is shown. Each trapezoidal prism unit 1303 includes a first face 1321 and a second face 1322 that are parallel to each other, and a third face 1323 that connects the first face 1321 and the second face 1322.

[0060] The first surface 1321 faces the light-emitting element 1202, and the second surface 1322 faces away from the light-emitting element 1202. In a direction perpendicular to the light-emitting surface 1101, the height of the first surface 1321 is greater than the height of the second surface 1322. When light shines from the light-emitting element 1202 onto the microstructure array 1302, it is guided to refract upwards and laterally. The propagation path of the light within the microstructure array 1302 changes, causing the originally concentrated downward light to disperse in more directions. For example, in a reading scenario, after such refraction, the light can illuminate the book more evenly, reducing reflections and shadows, and improving the visual reading experience.

[0061] In the length direction of the light source plate 1201, the length of the first surface 1321 is less than the length of the light emitting part 1202, ensuring that light can fully contact the microstructure array 1302 and be effectively scattered. If the first surface 1321 is too long, part of the light may directly bypass the microstructure array 1302 and cannot be fully scattered. The shorter first surface 1321 makes the light acting area on the microstructure array 1302 relatively small, which can more concentratedly refract and scatter the light, dispersing the light energy to multiple directions, effectively reducing the concentration of the light, reducing the glare highlight points of the light emitting surface 1101, and improving the visual effect.

[0062] When the ratio of the length of the first surface 1321 to the length of the light emitting part 1202 is between 5 / 12 and 1 / 2, a good balance between reducing blue light hazards and ensuring visual effect can be achieved. When the ratio of the length of the first surface 1321 to the maximum side length of the light emitting part 1202 is 5 / 12, the surface brightness of the glare points of the light emitting surface 1101 and the surface brightness under the maximum light intensity angle can be minimized, effectively reducing the blue light hazards. Within this range, the light emitting surface 1101 works best, and users can avoid eye irritation from strong light when using the lamp 100, while obtaining clear and comfortable lighting experience, improving the comfort of use.

[0063] The first surface 1321 is attached to the substrate 1301, so that light can smoothly enter the microstructure array 1302 for scattering processing. When the light irradiates the microstructure array 1302, the trapezoidal cross-sectional shape of the microstructure array 1302 guides the light to refract in different directions, achieving preliminary scattering of the light. When the light encounters the second surface 1322 and the third surface 1323, it will refract in different directions according to the principle of optical refraction. This multi-directional refraction enables the light to be more evenly dispersed to each angle after passing through the microstructure array 1302, effectively reducing the concentration of the light, reducing the glare highlight points of the light emitting surface 1101, and improving the visual effect of the light emitting surface 1101.

[0064] The first surface 1321 and the third surface 1323 have a cross-sectional included angle θ, and the cross-sectional included angle θ is an acute angle. Preferably, the cross-sectional included angle θ is in the range of 40°-80°. This angle range can effectively suppress the surface brightness of the light emitting surface 1101. When the cross-sectional included angle θ is in this range, the originally concentrated light energy is dispersed, the brightness of the light emitting surface 1101 is effectively controlled, and the local over-brightness is avoided, thereby improving the overall visual effect.

[0065] Different cross-section included angle θ has different influences on the anti-dazzling effect and visual experience. When the cross-section included angle θ is 40°, the effect of suppressing the light brightness is optimal. When the cross-section included angle θ is in the interval of 40°-60°, the visual effect of the light emitting surface 1101 is poor. In this embodiment, the cross-section included angle θ of 70° is selected by comprehensively considering the suppression of brightness and the visual effect. At this angle, the surface brightness of the dazzling highlight point of the light emitting surface 1101 can be effectively reduced, the good anti-dazzling effect can be realized, the light emitting surface 1101 has good visual effect, the user's eyes are not easy to feel fatigue when using the lamp 100, and clear and comfortable lighting experience can be obtained.

[0066] In this embodiment, the plurality of trapezoidal prism units 1303 work cooperatively, which significantly expands the scattering area of the light. When the light irradiates the microstructure array 1302 on the substrate 1301, each trapezoidal prism unit 1303 scatters the light, so that the light is refracted in different directions.

[0067] The first surface 1321 of each trapezoidal prism unit 1303 is attached to the substrate 1301, and the second surface 1322 of the adjacent two trapezoidal prism units 1303 has a gap. The light can propagate in the gap and be scattered again by other microstructure arrays 1302, further increasing the scattering path and angle of the light, so that the light is more uniformly dispersed, avoiding the local over-bright or over-dark situation.

[0068] In summary, the reflective light guide member 140 works with the scattering modulation member 130. After the light is scattered by the scattering modulation member 130, the light energy reflected by the reflective light guide member 140 has been reduced. After the light is processed twice, the possibility of forming a dazzling highlight point on the light emitting surface 1101 is further reduced, the intensity of harmful blue light is reduced to a certain extent, and the harm of blue light to human body is reduced.

[0069] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit. Although the utility model is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the utility model.

Claims

1. A light distribution module, characterized in that, include: The light source assembly (120) includes a light source plate (1201) and a light-emitting element (1202) disposed on the light source plate (1201); A scattering modulator (130) is disposed in the light emission direction of the light-emitting element (1202), and includes a substrate (1301) and a microstructure array (1302) disposed on the substrate (1301); A reflective light guide (140) is disposed in the light-emitting direction of the light-emitting element (1202), and one end is connected to the light source plate (1201) and the other end is connected to the light-emitting surface (1101); The light emitted by the light-emitting element (1202) is scattered by the microstructure array (1302) and reflected by the reflective light guide element (140) and then led out by the light-emitting surface (1101).

2. The light distribution module according to claim 1, characterized in that, The microstructure array (1302) includes multiple trapezoidal prism units (1303). Each trapezoidal prism unit (1303) includes a first face (1321), a second face (1322), and a third face (1323) that are parallel to each other. The first face (1321) is attached to the substrate (1301). There is a cross-sectional angle between the first face (1321) and the third face (1323). The cross-sectional angle is an acute angle.

3. The light distribution module according to claim 2, characterized in that, The included angle of the cross section is in the range of 40° to 80°.

4. The light distribution module according to claim 2, characterized in that, Both the light source plate (1201) and the light-emitting element (1202) are rectangular, and the length of the first surface (1321) of the light source plate (1201) is less than the length of the light-emitting element (1202) in the length direction.

5. The light distribution module according to claim 4, characterized in that, The ratio of the length of the first surface (1321) to the length of the light-emitting element (1202) is between 5 / 12 and 1 / 2.

6. The light distribution module according to claim 2, characterized in that, The scattering modulator (130) is housed in an optical cavity (150) formed by the light source plate (1201), the light emitting surface (1101), and the reflective light guide (140). The trapezoidal cross section of the trapezoidal prism unit (1303) is parallel to the light emitting surface (1101) in the optical cavity (150), and the first surface (1321) faces the light emitting element (1202), while the second surface (1322) faces away from the light emitting element (1202). The light emitted by the light emitting element (1202) is scattered by the microstructure array (1302), and part of it is directed toward the light emitting surface (1101), while the remaining light is reflected by the reflective light guide (140) and emitted from the light emitting surface (1101).

7. The light distribution module according to claim 1, characterized in that, The scattering modulator (130) is positioned close to the light-emitting surface (1101). The light emitted by the light-emitting element (1202) is reflected by the reflective light guide (140) to the scattering modulator (130), and then scattered by the scattering modulator (130) to the light-emitting surface (1101) for emission.

8. The light distribution module according to claim 1, characterized in that, The angle between the light source plate (1201) and the light-emitting surface (1101) is greater than 90°.

9. A lamp body structure, characterized in that, include: The light distribution module as described in any one of claims 1 to 8; The lamp body (110) is in which the light distribution module is assembled.

10. A lamp, characterized in that, include: The lamp body structure as described in claim 9; The lamp post is hinged to the lamp body (110), and the lamp body (110) can rotate relative to the lamp post; The base (111) is connected to the lamp post via a bracket (112).

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