Atmosphere projection lamp

Abstract

The utility model provides an atmosphere projection lamp which comprises a shell, a light path channel is formed in the shell, and a light-emitting bottom plate used for emitting dynamic pattern light beams and a lens set are arranged in the light path channel. The light-emitting bottom plate comprises a base plate and a plurality of lamp beads arranged on the base plate, and the lamp beads are arranged in an array mode. The lens group comprises at least one Fresnel lens and a plano-convex lens, and the Fresnel lens and the plano-convex lens are sequentially arranged on a light emitting path of the light emitting bottom plate; light emitted by the light-emitting bottom plate sequentially passes through the Fresnel lens and the plano-convex lens to form soft pattern projection. According to the utility model, the surface light source and the point light source emitted by the lamp panel are subjected to scattering blurring and focusing of the gathered light beams so as to improve the lighting effect, so that the transition edge of the generated pattern is better in soft feeling, and the original shape of the dynamic pattern is kept while the light atmosphere feeling is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of atmosphere projection equipment, in particular to an atmosphere projection lamp. Background Art

[0002] Ambient lights used to create atmosphere are mostly used in theaters, studios, bars, discos and other scenes with stage entertainment effects. With the growing demand for home entertainment or creating a specific projection atmosphere, small, portable, multi-functional and low-power small-scale ambient projection lamps are increasingly accepted by people and used in family entertainment life. Ambient projection lamps usually use a luminous base plate with various LED lamp beads as the light source. After refraction and reflection, various colored light beams form various projections such as brilliant stars and flowing water waves, adding a colorful life interest to people.

[0003] Existing projection lamps use a light-emitting base plate, and the lamp beads on the base plate usually emit light independently to produce light of different colors, thereby realizing irregular projection with an atmosphere. When it is necessary to project a pattern with a certain regularity and contour (such as animals, flames), a pattern plate printed with different patterns is usually used to project the pattern on the projected object. However, the atmosphere lamp of this structure not only projects a fixed pattern, but also requires the user to replace the pattern plate when changing the pattern, resulting in a poor user experience.

[0004] Although the existing LED screen light-emitting baseboard can control the lamp beads to make multiple lamp beads display different patterns with dynamic effects, the lamp beads of this type of light-emitting baseboard have severe divergence, and the pattern light beams it produces are in the form of line light sources or point light sources, and cannot form a complete pattern with an atmospheric feeling on the projected object.

[0005] Therefore, there is an urgent need for a projection device that has an atmosphere effect and can project dynamic patterns without excessive deformation. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model proposes an atmosphere projection lamp, which can improve the light effect by scattering, blurring and focusing the light beam, so that the transition edges of the generated pattern are softer, thereby improving the lighting atmosphere while retaining the original shape of the dynamic pattern.

[0007] The technical solution of the utility model is achieved in this way:

[0008] An atmosphere projection lamp comprises a shell, in which an optical path channel is formed, in which a light-emitting base plate and a lens group for emitting a dynamic pattern light beam are arranged; the light-emitting base plate comprises a substrate and a plurality of lamp beads arranged on the substrate, and the lamp beads are arranged in an array; the lens group comprises at least one Fresnel lens and a plano-convex lens, and the Fresnel lens and the plano-convex lens are sequentially arranged on the light beam path of the light-emitting base plate, and the light emitted by the light-emitting base plate passes through the Fresnel lens and the plano-convex lens in sequence to form a soft pattern projection.

[0009] A further technical solution of this embodiment is that a focusing surface of the Fresnel lens is arranged away from a light-emitting base plate.

[0010] A further technical solution of this embodiment is that a focusing surface of the plano-convex lens is arranged away from a side of the light-emitting base plate.

[0011] A further technical solution of this embodiment is that the distance between the Fresnel lens and the light-emitting base plate is 1 mm to 150 mm, and the focal length of the Fresnel lens is 20 mm to 300 mm.

[0012] A further technical solution of this embodiment is that the distance between the plano-convex lens and the Fresnel lens is 1 mm to 200 mm, and the focal length of the plano-convex lens is 20 mm to 300 mm.

[0013] A further technical solution of this embodiment is that a heat dissipation base plate is provided on the shell, the heat dissipation base plate is in contact with the light-emitting base plate, and the heat dissipation base plate is made of metal.

[0014] A further technical solution of this embodiment is that the main optical axis directions of the Fresnel lens and the plano-convex lens coincide with each other.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The atmosphere projection lamp provided by the utility model controls multiple lamp beads on the light-emitting bottom plate, so that the dynamic pattern light beam emitted by the light-emitting bottom plate can be collimated and focused by the Fresnel lens and the plano-convex lens on the path, so that the pattern light beam can project a pattern with an accurate outline on the projected object after passing a certain distance. At the same time, the two lenses fully collect scattered light to improve the light effect and avoid the image being too dim, effectively improving the atmosphere and layering of the projection. In addition, by setting the focal length and distance of the Fresnel lens and the plano-convex lens, it is ensured that the projection pattern on the projected object has a soft feeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a structural schematic diagram of an atmosphere projection lamp of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of an atmosphere projection lamp of the utility model;

[0020] Figure 3 It is the front view of the luminous bottom plate in the utility model.

[0021] Figure ID:

[0022] 1-housing; 11-heat dissipation base plate;

[0023] 2-light-emitting bottom plate; 21-substrate; 22-lamp beads;

[0024] 3-lens group; 32-Fresnel lens; 33-plano-convex lens. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figures 1 to 3 The utility model discloses an atmosphere projection lamp, including a shell 1, a light path channel is formed in the shell 1, and a light-emitting base plate 2 and a lens group 3 for emitting dynamic pattern light beams are provided in the light path channel; the light-emitting base plate 2 includes a substrate 21 and a plurality of lamp beads 22 arranged on the substrate 21, and the lamp beads 22 are arranged in an array; by arranging the LED lamp beads 22 in an array on the substrate 21, the light-emitting base plate 2 can be edited more conveniently through the lighting effect editing software to produce dynamic pattern changes, thereby projecting different dynamic patterns such as animals, weather, and text on the projected object, providing a basis for subsequent soft projection.

[0029] The LED lamp beads 22 on the substrate 21 are point light sources, and the light they generate is in a divergent state that spreads in all directions, so it is impossible to form an image on the projected object; in order to enable the divergent light generated by the light-emitting base plate 2 to project an accurate pattern after passing a certain distance, a lens group 3 is set in the optical path channel to collimate and focus the divergent pattern light.

[0030] The lens group 3 includes at least one Fresnel lens 32 and a plano-convex lens 33. The Fresnel lens 32 and the plano-convex lens 33 are sequentially arranged on the light beam path of the light-emitting base plate 2. The light emitted by the light-emitting base plate 2 passes through the Fresnel lens 32 and the plano-convex lens 33 in sequence to form a soft pattern projection. The light-emitting base plate 2 and the lens group 3 are arranged inside the cylindrical shell 1, which can limit the pattern light generated by the light-emitting base plate 2 to move in one direction, thereby improving the light efficiency; when the light beam first passes through the Fresnel lens 32, the light beam at the edge of the focused pattern is collected to make the projection light efficiency higher, and the pattern performance is more restored, and the plano-convex lens 33 further collects the scattered light to improve the light efficiency, and the light in a divergent state passes through the plano-convex lens 33 and is emitted in parallel, ensuring that the projection pattern has sufficient brightness and can be directly projected on a wall or ceiling at a certain distance without deformation, and its edge transition is softer, and it has a sense of atmosphere and clarity of the pattern.

[0031] In order to reduce the size and weight of the device, a Fresnel lens 32 is used in this embodiment for the first collimation and focusing. One side of the focusing surface of the Fresnel lens 32 is arranged away from the side of the light-emitting base plate 2. The Fresnel lens 32 is an optical element with a fine structure. Its surface is composed of a series of concentric rings. Each ring can be regarded as a small convex lens or concave lens. Based on the curvature and refraction principle of the surface lens, the light is refracted on the lens surface, and the curvature of the lens surface determines the refraction angle, which can achieve the focusing and diffusion of light. By using the Fresnel lens 32, a faster focusing effect can be achieved on a shorter path. Thereby improving the light effect and clarity of the pattern.

[0032] Furthermore, the light beam forms a soft pattern projection on the projected object through the convex surface of the plano-convex lens 33. The divergent light with the pattern passes through the plano-convex lens 33 and is collimated and focused, and the outgoing light is parallel to each other, ensuring that dynamic images of the same size can be presented on the projected object at different distances, ensuring that the projection remains clear at all distances and has a soft shape edge, thereby improving the projection atmosphere.

[0033] In order to achieve a softer and clearer atmosphere effect, the distance between the Fresnel lens and the light-emitting base plate is 1mm to 150mm, and the focal length of the Fresnel lens is 20mm to 300mm. The distance between the plano-convex lens and the Fresnel lens is 1mm to 200mm, and the focal length of the plano-convex lens is 20mm to 300mm. It is known to those skilled in the art that it is easy to achieve a soft and clear dynamic pattern projection effect by adjusting the focal length and distance of several lenses.

[0034] like Figure 2 As shown, the housing 1 provided in this embodiment is provided with a heat dissipation base plate 11, which is in contact with the light-emitting base plate 2 and is made of metal. The heat generated by the heat-generating components is transferred to the housing 1 by utilizing the thermal conductivity of the metal.

[0035] In order to make the projection and the pattern emitted by the light-emitting base plate 2 more regular and avoid deformation, further, the main optical axis directions of the Fresnel lens and the plano-convex lens coincide. Preferably, the central axis of the light-emitting base plate 2 and the central axis of the Fresnel lens and the plano-convex lens coincide with each other, and the centers of the components in the optical path channel are on the same circumference, ensuring that the same refraction and focusing effects are produced when the light beam enters the optical module, so that the final projection pattern will not be distorted.

[0036] The atmosphere projection lamp provided by the utility model controls multiple lamp beads on the light-emitting bottom plate, so that the dynamic pattern light beam emitted by the light-emitting bottom plate can be collimated and focused by the Fresnel lens and the plano-convex lens on the path, so that the pattern light beam can project a pattern with an accurate outline on the projected object after passing a certain distance. At the same time, the two lenses fully collect scattered light to improve the light effect and avoid the image being too dim, effectively improving the atmosphere and layering of the projection. In addition, by setting the focal length and distance of the Fresnel lens and the plano-convex lens, it is ensured that the projection pattern on the projected object has a soft feeling.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ambient projection lamp, comprising a housing (1), wherein a light path is formed in the housing (1), characterized in that: A light-emitting base plate (2) and a lens group (3) for emitting a dynamic pattern light beam are provided in the light path channel; the light-emitting base plate (2) comprises a substrate (21) and a plurality of lamp beads (22) arranged on the substrate (21), and the lamp beads (22) are arranged in an array; the lens group (3) comprises at least one Fresnel lens (32) and a plano-convex lens (33), and the Fresnel lens (32) and the plano-convex lens (33) are sequentially arranged on the light output path of the light-emitting base plate (2); The light emitted by the light-emitting base plate (2) passes through the Fresnel lens (32) and the plano-convex lens (33) in sequence to form a soft pattern projection.

2. The atmosphere projection lamp according to claim 1, characterized in that: One side of the focusing surface of the Fresnel lens is arranged away from one side of the light-emitting base plate (2).

3. The atmosphere projection lamp according to claim 1, characterized in that: One side of the focusing surface of the plano-convex lens (33) is arranged away from one side of the light-emitting base plate (2).

4. The atmosphere projection lamp according to claim 1, characterized in that: The distance between the Fresnel lens (32) and the light-emitting base plate (2) is 1 mm to 150 mm, and the focal length of the Fresnel lens (32) is 20 mm to 300 mm.

5. The atmosphere projection lamp according to claim 1, characterized in that: The distance between the plano-convex lens (33) and the Fresnel lens (32) is 1 mm to 200 mm, and the focal length of the plano-convex lens (33) is 20 mm to 300 mm.

6. The atmosphere projection lamp according to claim 1, characterized in that: The housing (1) is provided with a heat dissipation base plate (11), the heat dissipation base plate (11) is in contact with the light-emitting base plate (2), and the heat dissipation base plate (11) is made of metal.

7. The atmosphere projection lamp according to claim 1, characterized in that: The main optical axis directions of the Fresnel lens (32) and the plano-convex lens (33) coincide with each other.

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