Light-transmitting plate and mouth lamp

Abstract

The utility model relates to lighting device technical field discloses a kind of light transmission plate and oral cavity lamp, including body, body is equipped with the first surface for being relatively installed with light source board, and the second surface is oppositely arranged with the first surface;Body forms at least two total reflection lenses in the first surface, the blind hole for accommodating point light source on light source board is opened in the side of total reflection lens away from the second surface;Body forms microarray area opposite with total reflection lens in the second surface, each microarray area is composed of multiple curved surfaces, and microarray area is used to shape the rectangular light spot of light spot projected by total reflection lens.The light transmission plate of the utility model is convenient for lamp assembly.

Description

Technical Field

[0001] This utility model relates to the field of lighting device technology, and in particular to a light-transmitting plate and an oral lamp. Background Technology

[0002] A dental lamp is a special lighting device used in dental clinics or dental hospitals to illuminate the inside of the oral cavity, making it easier for dentists to diagnose and treat patients.

[0003] In existing dental lamps, the light emitted by each LED chip typically passes through an independent lens. Each LED chip requires a corresponding lens, and to ensure the consistency of the emitted light spot, the installation direction of each lens needs to be precisely adjusted. The assembly process of dental lamps in existing technologies is generally quite cumbersome. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a light-transmitting plate that facilitates the assembly of lamps.

[0005] To solve the above-mentioned technical problems, this utility model provides a light-transmitting plate, including a body. The body has a first surface for mounting opposite to a light source plate, and a second surface disposed opposite to the first surface. The body forms at least two total internal reflection lenses on the first surface, and the total internal reflection lenses have blind holes on the side opposite to the second surface for accommodating point light sources on the light source plate. The body forms a micro-array area opposite to the total internal reflection lenses on the second surface. Each micro-array area is composed of multiple curved surfaces, and the micro-array area is used to shape the light spot projected by the total internal reflection lenses into a rectangular light spot.

[0006] As an improvement to the above solution, the outer wall of the total internal reflection lens is a total internal reflection surface, and the distance between the outer wall of the total internal reflection lens and the center gradually decreases towards the end away from the first surface; and / or

[0007] The cross-sectional area of ​​the blind hole gradually increases towards the end away from the first surface.

[0008] As an improvement to the above solution, the orthographic projection of the curved surface onto the first surface is a quadrilateral, and the orthographic projection of the total internal reflection lens onto the second surface is completely covered by the corresponding microarray area.

[0009] As an improvement to the above solution, the body includes multiple light-transmitting areas, each of which is provided with a total reflection lens and multiple first protrusions;

[0010] The first protrusion includes concentric circular teeth and arcuate teeth, both of which are concentrically arranged with the outer wall of the total reflection lens.

[0011] As an improvement to the above solution, the body further includes a light-shielding area, which has a second protrusion protruding toward the first surface. The total reflection lens is arranged around the outer periphery of the second protrusion, and the total reflection lens is arranged in a mirror-symmetrical manner on the first surface.

[0012] As an improvement to the above scheme, the second protrusion is flush with the end of the total reflection lens that is away from the first surface.

[0013] As an improvement to the above solution, the second protrusion is continuously arranged and surrounds to form a cavity.

[0014] As an improvement to the above solution, the light-shielding area has a groove in the center of the second surface, and a non-transparent element is provided in the groove. The non-transparent element at least partially overlaps with the orthographic projection of the cavity on the first surface.

[0015] In addition, this utility model also provides an oral lamp, which includes a housing, a light source plate, and the aforementioned light-transmitting plate. The light source plate is provided with a point light source that corresponds to a blind hole on the light-transmitting plate. The total internal reflection lens abuts against the light source plate, and the point light source extends into the blind hole.

[0016] As an improvement to the above solution, a panel is also included, which is opposite to the second surface and is made of a light-transmitting material.

[0017] Implementing this utility model has the following beneficial effects:

[0018] This utility model discloses a light-transmitting plate. A total internal reflection lens and a micro array area are formed on the body of the light-transmitting plate. The total internal reflection lens protrudes from the first surface of the body and a blind hole is opened on the side of the total internal reflection lens away from the second surface of the body. The micro array area is formed on the second surface and is opposite to the total internal reflection lens. When the first surface of the light-transmitting plate is installed opposite to the light source plate, the point light source, i.e. the lamp bead, on the light source plate is accommodated in the corresponding blind hole. The light emitted by the point light source is emitted through the blind hole, the total internal reflection lens, the body, and the micro array area. The total internal reflection lens forms a highly collimated and uniform beam of light, which is further adjusted by the micro array area composed of multiple curved surfaces to shape the beam into a rectangular beam required by the oral cavity lamp.

[0019] This utility model satisfies the collimation, uniformity, and light spot adjustment requirements of multiple point light sources by installing a single light-transmitting plate. It integrates the total reflection lens and the micro array area on the light-transmitting plate, eliminating the hassle of installing lenses one by one and adjusting the lens angles, and greatly facilitating the assembly of lamps. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a light-transmitting plate according to the present invention;

[0021] Figure 2 yes Figure 1 A cross-sectional view of the assembly of the light-transmitting plate and the light source plate;

[0022] Figure 3 yes Figure 1 The main view;

[0023] Figure 4 yes Figure 3 AA section view;

[0024] Figure 5 yes Figure 3 BB section view;

[0025] Figure 6 yes Figure 5 A magnified structural diagram of part E;

[0026] Figure 7 yes Figure 3 CC section view

[0027] Figure 8 This is a three-dimensional structural schematic diagram of an embodiment of an oral lamp according to the present invention;

[0028] Figure 9 yes Figure 8 The main view;

[0029] Figure 10 yes Figure 9 DD sectional view. Detailed Implementation

[0030] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0031] like Figures 1 to 7 As shown, this utility model discloses a first embodiment of a light-transmitting plate, including a body 1, a total internal reflection lens 2, and a micro array region 10. The body 1 has a first surface 11 for mounting opposite to a light source plate 7, and a second surface 12 disposed opposite to the first surface 11. The total internal reflection lens 2 is formed on the body 1, protruding from the first surface 11 and corresponding to a point light source 71 on the light source plate 7. A blind hole 21 for accommodating the point light source 71 is formed on the side of the total internal reflection lens away from the second surface 12. The micro array region 10 is formed on the second surface of the body, and is disposed opposite to the total internal reflection lens. Each micro array region 10 is composed of multiple curved surfaces, and the micro array region 10 is used to shape the light spot projected by the total internal reflection lens into a rectangular light spot.

[0032] In this embodiment, a total internal reflection lens 2 and a micro array region 10 are formed on the body 1 of the light-transmitting plate. The total internal reflection lens 2 protrudes from the first surface 11 of the body 1, and a blind hole 21 is formed on the side of the total internal reflection lens 2 away from the second surface 12 of the body 1. The micro array region 10 is formed on the second surface 12 and is opposite to the total internal reflection lens 2. When the first surface 11 of the light-transmitting plate is installed opposite to the light source plate 7, the point light source 71 on the light source plate 7, i.e. the lamp bead, is accommodated in the corresponding blind hole 21. The light emitted by the point light source 71 is emitted through the blind hole 21, the total internal reflection lens 2, the body 1, and the micro array region 10. The total internal reflection lens 2 forms a highly collimated and uniform beam of light, which is further adjusted by the micro array region 10 composed of multiple curved surfaces to shape the beam into a rectangular beam required by the oral cavity lamp.

[0033] In this embodiment, installing a single light-transmitting plate satisfies the requirements for collimation, uniformity, and consistent light spot emission angles of multiple point light sources 71. The total reflection lens 2 and the micro array area 10 are integrated on the light-transmitting plate, eliminating the hassle of installing lenses one by one and adjusting the lens angles, which greatly simplifies the assembly of the lamps.

[0034] The light-transmitting panel in this embodiment can be made of light-transmitting materials such as glass and acrylic.

[0035] The curved surfaces that make up the microarray region 10 have quadrilateral shapes, such as rhombuses, squares, rectangles, parallelograms, trapezoids, etc., projected onto the first surface. In addition, they can also be elongated structures. The microarray region 10, composed of multiple curved surfaces, resembles a scale-like surface, which serves to shape the light spot.

[0036] In this embodiment, the outer wall of the total internal reflection lens 2 is a total internal reflection surface. The total internal reflection lens 2 is preferably conical, and the distance between the sidewall and the center of the total internal reflection lens 2 gradually decreases towards the end away from the first surface 11. The cross-sectional area of ​​the blind aperture 21 gradually increases towards the end away from the first surface 11. In this embodiment, the surface on which the blind aperture 21 is formed in the total internal reflection lens 2 is a third surface, and the bottom of the blind aperture 21 is parallel to the third surface, so that the light emitted by the point light source 71 contained within the blind aperture 21 can achieve total internal reflection on the outer wall of the total internal reflection lens 2 and be refracted through the curved surface of the microarray region 10.

[0037] In this embodiment, the light-transmitting plate body 1 includes a light-transmitting area a and a light-blocking area b. Multiple light-transmitting areas a are provided, each of which is equipped with a total internal reflection lens 2 and multiple first protrusions 3. The first protrusions 3 are formed on the body 1, protruding towards the first surface 11, and surrounding the outer periphery of the total internal reflection lens 2. The first protrusions 3 are concentrically arranged with the outer wall of the total internal reflection lens 2, specifically including concentric circular protrusions 31 and arcuate protrusions 32. The concentric circular protrusions 31 are annular rings concentrically arranged with the blind hole 21, and the arcuate protrusions 32 are arcuate segments concentrically arranged with the blind hole 21. Both the concentric circular protrusions 31 and the arcuate protrusions 32 are concentrically arranged with the total internal reflection lens 2, and each light-transmitting area a has at least two concentric circular protrusions 31. In this embodiment, the first protrusion 3 is evenly distributed throughout the entire light-transmitting area a. Preferably, the arcuate protrusions 32 of two adjacent light-transmitting areas a are intersected and connected, and the spacing between two adjacent concentric circular protrusions 31, between two adjacent arcuate protrusions 32, and between adjacent concentric circular protrusions 31 and arcuate protrusions 32 is equal. Simultaneously, the radial cross-sectional shapes of the concentric circular protrusions 31 and arcuate protrusions 32 are consistent, forming a triangle or trapezoid with the first surface 11. The first protrusion 3 on the light-transmitting plate serves two purposes: firstly, it visually blurs the circuit structure on the light source board located on the back of the light-transmitting plate, thus hiding internal components; secondly, it has a decorative effect. During use, the patient faces the light-transmitting structure with the first protrusion 3, resulting in a better visual effect and enhancing the overall aesthetics of the lamp. Furthermore, the protruding tooth structure of the first protrusion 3 effectively increases the heat dissipation area of ​​the lamp, facilitating heat dissipation and indirectly improving the lifespan and light decay stability of the LED.

[0038] In this embodiment, the light-shielding area b is preferably located in the center of the body 1 and surrounded by multiple light-transmitting areas a. The light-shielding area b has a second protrusion 4 protruding towards the first surface 11. The second protrusion 4 is continuously arranged in a racetrack-like ring structure, and the second protrusion 4 encloses a cavity. The total reflection lens 2 is arranged around the outer periphery of the second protrusion 4, and the total reflection lens 2 is arranged in a mirror-symmetrical manner on the first surface 11. The blind hole is offset from the axis of the total reflection lens, so that the overall light output achieves the illumination effect of a shadowless lamp. The second protrusion 4 is flush with the end of the total reflection lens 2 away from the first surface 11, so that when the light-transmitting plate and the light source plate 7 are assembled, the total reflection lens 2 can abut against the light source plate 7, preventing the light emitted by the point light source 71 on the light source plate 7 from passing through the blind hole 21 and hitting other parts. At the same time, the second protrusion 4 can abut against the light source plate 7, providing support and light blocking.

[0039] To achieve the light-blocking effect of the light-blocking area b, in this embodiment, a groove 121 is also provided on the second surface 12 of the light-blocking area b, and a non-transparent element 5 is provided in the groove 121. The non-transparent element 5 is preferably made of a rubber material. The non-transparent element 5 and the projection of the cavity in the axial direction of the blind hole 21 at least partially coincide, so as to achieve light blocking in the central part and avoid glare caused by the cross-over of light rays between the light-transmitting areas a located on opposite sides of the light-blocking area b.

[0040] In addition, combined Figures 8 to 10 This utility model also provides an oral lamp, which includes a housing 6, a light source plate 7, and the aforementioned light-transmitting plate. The light source plate 7 is provided with point light sources 71 corresponding to the blind holes 21 on the light-transmitting plate. The total internal reflection lens 2 abuts against the light source plate 7, and the point light sources 71 extend into the blind holes 21. The point light sources 71 are LED beads, which are arranged around the non-transparent part 5. The light-transmitting plate structure avoids the need to install and adjust the lens angle one by one, making assembly simple.

[0041] In addition, to improve the durability of the oral lamp, the oral lamp may also be provided with a panel 8 connected to the housing 6. The panel 8 is made of a light-transmitting material, preferably acrylic, and the panel 8 is opposite to the second surface 12.

[0042] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A light-transmitting sheet, characterized by, The device includes a body having a first surface for mounting opposite to a light source board and a second surface disposed opposite to the first surface; the body forms at least two total internal reflection lenses on the first surface, and the total internal reflection lenses have blind holes on the side opposite to the second surface for accommodating point light sources on the light source board; the body forms a micro-array area opposite to the total internal reflection lenses on the second surface, each micro-array area being composed of multiple curved surfaces, and the micro-array area being used to shape the light spot projected by the total internal reflection lenses into a rectangular light spot.

2. The light-transmissive plate according to claim 1, wherein The outer wall of the total internal reflection lens is a total internal reflection surface, and the distance between the outer wall of the total internal reflection lens and the center gradually decreases towards the end away from the first surface; and / or The cross-sectional area of ​​the blind hole gradually increases towards the end away from the first surface.

3. The light-transmissive plate according to claim 1 or 2, wherein The orthographic projection of the curved surface onto the first surface is a quadrilateral, and the orthographic projection of the total internal reflection lens onto the second surface is completely covered by the corresponding microarray area.

4. The light-transmissive plate of claim 1, wherein The body includes multiple light-transmitting areas, each of which is provided with a total reflection lens and multiple first protrusions; The first protrusion is formed on the body and protrudes toward the first surface. The first protrusion surrounds the outer periphery of the total reflection lens. The first protrusion includes concentric circular teeth and arcuate teeth. Both the concentric circular teeth and the arcuate teeth are concentrically arranged with the outer sidewall of the total reflection lens.

5. The light-transmissive plate of claim 1, wherein The body includes a light-shielding area, the light-shielding area is provided with a second protrusion protruding towards the first surface, the total reflection lens is disposed around the outer periphery of the second protrusion, and the total reflection lens is arranged in a mirror symmetrical manner on the first surface.

6. The light-transmissive plate according to claim 5, wherein The second protrusion is flush with the end of the total reflection lens that is away from the first surface.

7. The light-transmissive plate according to claim 5 or 6, wherein The second protrusion is continuously arranged and surrounds to form a cavity.

8. The light-transmissive plate according to claim 7, wherein The light-shielding area has a groove in the center of the second surface, and a non-transparent element is provided in the groove. The non-transparent element at least partially overlaps with the orthographic projection of the cavity on the first surface.

9. An oral lamp characterized in that, The device includes a housing, a light source plate, and a light-transmitting plate as described in any one of claims 1 to 8. The light source plate is provided with a point light source corresponding to a blind hole on the light-transmitting plate. The total internal reflection lens abuts against the light source plate, and the point light source extends into the blind hole.

10. The oral lamp of claim 9, wherein, It also includes a panel opposite to the second surface, the panel being made of a light-transmitting material.

Images