A replaceable starry sky ceiling light device

Abstract

This utility model discloses a replaceable starry sky top lighting device, including a light source, an optical film, and a fixed base. The fixed base is made of a non-transparent substrate. The optical film is horizontally set in the fixed base and has a number of dots. A set of light sources is set on the light-incident surfaces on both sides of the optical film. A transparent substrate is set between the light sources and the optical film. A light-emitting port is opened on the fixed base corresponding to the lower light-emitting surface of the optical film. This utility model uses an optical film with a dot design, which can realize that the light source enters from the side and then emits light from the plane. The combination design of the dots can form a starry sky top effect. Different starry sky scenes can be flexibly switched by simply changing the optical film. Compared with traditional solutions, this device not only realizes the replaceability of the scene, but also has the advantage of simplified structure.

Description

Technical Field

[0001] This utility model relates to a replaceable starry sky ceiling light-emitting device, specifically a light-emitting device that can replace optical film materials to achieve a dynamic starry sky ceiling effect, belonging to the field of optical film material decoration and lighting technology. Background Technology

[0002] Optical fiber is a filamentary material capable of transmitting light signals. Existing starry sky ceilings utilize a light source to activate the optical fiber, and then create a decorative lighting effect resembling a starry sky by arranging and positioning the fibers. When light is emitted from the top of the optical fiber, it passes through lenses or other optical components, forming a starry sky-like effect of light spots. The size, brightness, and color of these light spots can be adjusted to achieve different lighting effects. Currently, to achieve the starry sky effect, fiber optic starry sky ceilings require drilling holes in the substrate or using ink printing to edit the pattern before activating the optical fiber to emit light. This process is relatively complex and costly. Furthermore, once the fiber optic starry sky ceiling is installed, the pattern is fixed and cannot be changed, which can easily lead to aesthetic fatigue after prolonged use.

[0003] In the prior art, Chinese patent CN114001325B discloses a starry sky roof structure. The principle behind its starry sky roof formation is the combination of a light source and a light-shielding sleeve, allowing light to pass only through the light-transmitting holes in the light-shielding sleeve. This allows the optics to be emitted in a specific direction, with the light passing through the light-transmitting component and striking the light filter, maintaining a specific transmission angle to achieve the starry sky roof effect. In addition, Chinese patent CN221340401U discloses a starry sky roof and vehicle, consisting of a light guide assembly, a light source, and a fixing assembly. The two ends of the fixing assembly are connected to the vehicle roof and the light guide assembly, respectively. One end of the fixing assembly corresponding to the light guide assembly has a receiving cavity for housing the light source. The light guide assembly includes a pattern plate, a light guide plate, and a reflector. Light enters through the side of the light guide plate, and the combination of the pattern plate and the reflector creates the starry sky roof effect.

[0004] Therefore, current starry sky ceiling designs still rely on perforated substrates for light transmission or fixed pattern panels. This simplistic design inevitably leads to user fatigue. To improve user experience and enable flexible replacement of starry sky ceiling patterns, there is an urgent need to develop a new type of light-emitting device that allows for the replacement of starry sky ceiling patterns. Utility Model Content

[0005] The purpose of this invention is to provide a replaceable starry sky ceiling light-emitting device. It adopts an optical film material with a dot design, which can realize that the light source enters from the side and then emits light from the plane. On the one hand, the combination design of the dots can form a starry sky ceiling effect. On the other hand, different starry sky scenes can be flexibly switched by simply changing the optical film material. Compared with traditional solutions, this device not only realizes the replaceability of the scene, but also has the advantage of simplified structure.

[0006] This utility model is achieved through the following technical solution: a replaceable starry sky top light-emitting device, including a light source, an optical film and a fixed base. The fixed base is made of a non-transparent substrate. The optical film is horizontally set in the fixed base and has a number of dots. A set of light sources is set on the light-incident surfaces on both sides of the optical film. A transparent substrate is set between the light source and the optical film. A light-emitting port is opened on the fixed base corresponding to the lower light-emitting surface of the optical film.

[0007] The optical film material is in the form of two or more layers, and the two or more optical film materials are stacked in the fixed base. Each optical film material has a light source and a transparent substrate on its light-incident surface. A partition made of a non-transparent substrate is provided between adjacent light sources. The transparent substrate, the partition and the fixed base form multiple cavities to accommodate the light sources.

[0008] The two horizontal ends of the optical film are stacked in the fixed base after being separated by partitions.

[0009] The fixed base is provided with an opening for the optical film to be taken out or inserted in the horizontal direction.

[0010] The end of the partition or the edge of the fixed base corresponding to the light outlet is provided with a fixed pulley that cooperates with the horizontal movement of the optical film material.

[0011] The light source is an LED lamp, a xenon lamp, a halogen lamp, or an OLED lamp.

[0012] The diameter of the dots is 25um to 30um.

[0013] The dots are crater-shaped, prismatic, conical, hemispherical, or semi-ellipsoidal.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) The optical control method of this utility model is different from that of the traditional starry sky top structure. The traditional starry sky top structure uses external structures such as perforated substrates to transmit light or patterned panels to present the starry sky effect. This utility model directly changes the light-emitting surface of the optical film material and uses the light source to enter the optical film material from the side and then emit light from the plane of the optical film material, making the overall structure more compact and simple.

[0015] (2) The present invention is reasonably designed and has the following technical advantages: First, high design efficiency. By precisely designing the dot structure on the optical film, planar light output and starry sky effects can be achieved. Second, production feasibility. It supports the design of various dot shapes such as crater type and is suitable for large-scale mass production processes. Third, diverse effects. Multiple optical film materials can be freely combined. Through differentiated dot arrangement, a variety of starry sky scenes can be presented.

[0016] (3) The optical film material of this utility model is a replaceable structure with a standardized size design. It can be quickly installed and removed by a pull-out structure and a fixed base. The light source remains unchanged. Users can replace the film material with different optical properties at any time according to the needs of the scene to achieve a variety of starry sky effects. Attached Figure Description

[0017] Figure 1 This is a longitudinal sectional view of the present invention when it is a single-layer optical film material.

[0018] Figure 2 This is a longitudinal sectional view of the present invention when it is a multilayer optical film material.

[0019] Figure 3 This is a cross-sectional view (partial view) of the present invention.

[0020] Figure 4 This is an electron microscope image of the crater-shaped dots of this utility model.

[0021] Among them, 1—light source, 2—optical film material, 3—fixed base, 4—transparent substrate, 5—partition, and 6—fixed pulley. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0023] Example 1: This embodiment is a replaceable starry sky light-emitting device, which adopts a replaceable one-layer or multi-layer optical film material 2 design. The optical film material 2 achieves planar light emission and starry sky top optical effect through dot matrix. The replaceable optical film material 2 is modularly designed, which can realize the free switching of various starry sky light effects. The overall structure design is reasonable and has the characteristics of practicality and aesthetics.

[0024] See Figures 1 to 3 As shown, the specific design of this embodiment is as follows: It mainly consists of an optical film 2, a transparent substrate 4, a light source 1, and a fixing base 3. The fixing base 3 is made of a non-transparent substrate 4, which can be made of a light-shielding material. The light source 1 uses LED beads (or xenon lamps, halogen lamps, or OLED lamps, etc.). The optical film 2 is made of polymethyl methacrylate (PMMA) or polycarbonate (PC) using an extrusion process, and crater-shaped dots are hot-pressed onto the surface of the optical film 2 using a hot-pressing process (see...). Figure 4 Alternatively, the dots can be of other shapes, such as prisms, cones, hemispheres, or semi-ellipsoids, as long as they can ensure that the optical film 2 emits light from a plane. The dot diameter is approximately 25µm to 30µm. The arrangement of the dots is designed according to the lighting pattern. The hot-pressed optical film 2 is horizontally installed in the fixed base 3 according to its number. A set of light sources 1 is provided on the light-incident surfaces on both sides of the optical film 2. A transparent substrate 4 is provided between the light source 1 and the optical film 2. A light-emitting port is opened on the fixed base 3 on the lower light-emitting surface of the optical film 2. In use, by lighting the light source 1, the light from the light source 1 passes through the transparent substrate 4 and enters from the light-incident surfaces on both sides of the optical film 2. After being guided by the dots, the light is emitted from the light-emitting surface where the plane of the optical film 2 is located. The combination of several dots creates a starry sky effect.

[0025] To achieve a modular design where the optical film 2 is replaceable, in this embodiment, the fixing base 3, on the side corresponding to the optical film 2, has an opening for the optical film 2 to be removed or inserted in the horizontal direction. This is for cases where only one layer of the optical film 2 is provided (see...). Figure 1 The opening allows only one layer of optical film 2 to pass through. Meanwhile, a fixed pulley 6 is provided on the edge of the fixed base 3 corresponding to the light outlet to facilitate the horizontal movement of the optical film 2, making it more convenient and faster to remove or insert the optical film 2.

[0026] When the optical film 2 is configured as a multilayer (see...) Figure 2 Each optical film 2 has a light source 1 and a transparent substrate 4 on its light-incident surface. A partition 5, made of a non-transparent substrate 4, is provided between adjacent light sources 1 and can be integrally formed with the fixing base 3. The transparent substrate 4, partition 5, and fixing base 3 form multiple cavities to accommodate the light sources 1. The partition 5 and fixing base prevent light leakage from unnecessary areas. The transparent substrate 4 is made of transparent PMMA or transparent PC material, facilitating the transmission of light from the light sources 1 to the optical film 2. An opening is also provided on the fixing base 3, corresponding to one side of the optical film 2, allowing multiple layers of optical film 2 to pass through. To facilitate the installation and replacement of multiple layers of optical film 2, the partition 5 can be extended to the horizontal end of the optical film 2, allowing adjacent optical film 2 to be stacked by spacing them apart. To facilitate the replacement of multiple layers of optical film 2, fixed pulleys 6 can be provided at the ends of the partition 5 and at the edges of the fixing base 3 corresponding to the light outlets, for horizontal extraction or insertion of the optical film 2.

[0027] In a specific implementation, multiple optical films 2 can be stacked simultaneously in the light-emitting device. The circuit controller controls the light source 1 according to the order and timing of brightness, thereby achieving alternating light emission from the multiple optical films 2 and realizing a dynamic starry sky effect. Since the circuit controller controlling the order and timing of brightness of the light source 1 is a conventional existing technology, it will not be described in detail in this embodiment.

[0028] In other alternative implementations, to avoid light leakage from unnecessary parts of the light-emitting device, all other parts on the fixing base 3 except for the light-emitting port are made of non-transparent substrate 4. For the openings on the fixing base 3, movable light-shielding covers can be used to close them when there is no need to replace the optical film 2.

[0029] In addition, the fixed pulley involved in this embodiment is used to guide and move the optical film. It is a conventional guiding component in the art. Those skilled in the art can determine the relevant design parameter values ​​of the fixed pulley based on the characteristics of the optical film material (thickness, elastic modulus, etc.) through conventional calculations. This embodiment will not elaborate on this further.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A replaceable star ceiling light device, characterized by: It includes a light source (1), an optical film (2) and a fixed base (3). The fixed base (3) is made of a non-transparent substrate (4). The optical film (2) is horizontally set in the fixed base (3) and has several dots. A set of light sources (1) is provided on the light-incident surfaces on both sides of the optical film (2). A transparent substrate (4) is provided between the light source (1) and the optical film (2). A light-emitting port is opened on the fixed base (3) on the lower light-emitting surface of the optical film (2).

2. The replaceable star ceiling lighting device of claim 1, wherein: The number of optical film materials (2) is two or more. The two or more optical film materials (2) are stacked in the fixed base (3). Each optical film material (2) has a light source (1) and a transparent substrate (4) on its light-incident surface. A partition (5) made of a non-transparent substrate (4) is provided between adjacent light sources (1). The transparent substrate (4), the partition (5) and the fixed base (3) form multiple cavities to accommodate the light sources (1).

3. The replaceable star ceiling lighting device of claim 2, wherein: The two horizontal ends of the optical film (2) are stacked in the fixed base (3) after being separated by partitions (5).

4. The replaceable star ceiling lighting device of claim 3, wherein: The fixed base (3) is provided with an opening for the optical film (2) to be taken out or inserted in the horizontal direction.

5. The replaceable star ceiling lighting device of claim 4, wherein: The end of the partition (5) and the edge of the fixed base (3) corresponding to the light outlet are provided with fixed pulleys (6) that cooperate with the horizontal movement of the optical film (2).

6. The replaceable star ceiling lighting device of claim 1, wherein: The light source (1) is an LED lamp, a xenon lamp, a halogen lamp, or an OLED lamp.

7. The replaceable star ceiling lighting device of claim 1, wherein: The diameter of the dots is 25um to 30um.

8. The replaceable star ceiling lighting device of claim 1, wherein: The dots are crater-shaped, prismatic, conical, hemispherical, or semi-ellipsoidal.

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