Lamp cap and explosion-proof lamp

Abstract

The application belongs to the technical field of lighting, and particularly relates to a lamp cap and an explosion-proof lamp. The lamp cap comprises a shell, a light source plate and a lens. The lens is connected with the shell and surrounds to form a light source cavity. The light source plate is located in the light source cavity. The light source plate comprises a substrate and a plurality of light emitting pieces. The substrate is installed on the shell. The light emitting pieces are arranged on the surface of the substrate facing the lens. The light emitting pieces are arranged at intervals along the circumference of the substrate. The surface of the lens facing the light emitting pieces is provided with a microstructure for dispersing light rays. The light rays emitted by the light source plate of the lamp cap are relatively dispersed. Meanwhile, the light rays emitted by the light emitting pieces are refracted by the microstructure, and the light rays are complexly crossed, so that the light rays emitted by the lens are uniformly distributed, the effect of uniform light spot without dazzling is achieved, the phenomenon of inconsistent light color can be reduced, and the lamp cap can be used for double-color-temperature light sources in subsequent use.

Description

Technical Field

[0001] This application belongs to the field of lighting technology, and in particular relates to a lamp holder and an explosion-proof lamp. Background Technology

[0002] Explosion-proof lights are used in hazardous locations where flammable gases and dust are present. They prevent the electric arcs, sparks, and high temperatures generated inside the lamp from igniting the flammable gases and dust in the surrounding environment, thus meeting explosion-proof requirements. Explosion-proof lights are widely used in industries such as petroleum, petrochemicals, and nuclear power. They provide sufficient lighting for equipment operation and maintenance, but they also have problems such as uneven light spots and glare. Summary of the Invention

[0003] The purpose of this application is to provide a lamp holder and an explosion-proof lamp, which aims to solve the technical problems of uneven light spot and glare in the existing explosion-proof lamps.

[0004] To achieve the above objectives, the technical solution adopted in this application is: a lamp holder, characterized in that: it includes a housing, a light source plate, and a lens, the lens being connected to the housing and forming a light source cavity, the light source plate being located within the light source cavity; the light source plate includes a substrate and a plurality of light-emitting elements, the substrate being mounted on the housing, the light-emitting elements being disposed on the surface of the substrate facing the lens, the light-emitting elements being spaced apart circumferentially along the substrate, and the surface of the lens facing the light-emitting elements being provided with microstructures for emitting light.

[0005] Optionally, the microstructure is an irregular microstructure.

[0006] Optionally, the light-emitting element includes a plurality of LED beads, which are evenly distributed on the substrate.

[0007] Optionally, the LED beads are divided into multiple groups, and the multiple groups of LED beads are distributed at intervals along the circumference of the substrate, and the LED beads in each group are arranged at intervals along the radial direction of the substrate.

[0008] Optionally, the lens includes a base plate and an annular wall surrounding the base plate, with one end of the annular wall facing away from the base plate connected to the housing, the substrate located inside the annular wall, and the microstructure disposed on the base plate.

[0009] Optionally, the base plate is recessed inwards from the position opposite to each of the light-emitting elements to form a receiving cavity, the light-emitting elements are located in the receiving cavity, and the microstructure is disposed on the bottom surface of the receiving cavity opposite to the light-emitting elements.

[0010] Optionally, the base plate includes a central region abutting against the substrate and a plurality of light-emitting regions distributed circumferentially along the central region, with each light-emitting element corresponding to each light-emitting region;

[0011] The light-emitting area includes a light-emitting part, a connecting ring part, and an abutting part. One end of the connecting ring part is connected to the light-emitting part. The connecting ring part surrounds the light-emitting part, and the connecting ring part and the light-emitting part together form the accommodating cavity.

[0012] The abutting portion is connected to the other end of the connecting ring portion, surrounds the connecting ring portion, and abuts against the substrate;

[0013] The light-emitting element is located inside the connecting ring portion, and the light-emitting portion has the microstructure disposed on the surface facing the light-emitting element.

[0014] Optionally, the lens is a PC lens.

[0015] Optionally, the lamp head further includes an explosion-proof face shield, which is mounted on the lens and connected to the housing.

[0016] The lamp holder provided in this application has at least one of the following technical effects: When in use, the light emitted by the light-emitting element is emitted through the lens to achieve illumination. Since the light-emitting elements are arranged circumferentially along the substrate and the lens has microstructures for diverging light on the surface facing the light-emitting elements, the light emitted by the light source board is relatively dispersed. At the same time, the light emitted by the light-emitting elements is refracted by the microstructures, and the light rays are intertwined, which makes the light emitted by the lens have good uniformity of distribution, achieving the effect of uniform light spot and non-glaring light. At the same time, it can also reduce the phenomenon of inconsistent light color. In addition, in subsequent use, the lamp holder can also be used as a dual-color temperature light source.

[0017] Another technical solution adopted in this application is: an explosion-proof lamp, including a driving device and the above-mentioned lamp head, wherein the driving device is connected to the lamp head and is used to drive the light-emitting element to emit light.

[0018] The explosion-proof lamp of this application, by adopting the above-mentioned lamp head, has light-emitting elements spaced circumferentially along the substrate, and the lens has microstructures for scattering light on the surface facing the light-emitting elements. This makes the light emitted by the light source board more dispersed. At the same time, the light emitted by the light-emitting elements is refracted by the microstructures, and the light rays intersect in an intricate manner, thereby making the light emitted by the lens have good uniformity and achieving the effect of uniform light spot and non-glaring light. At the same time, it can also reduce the phenomenon of inconsistent light color. In addition, in subsequent use, this explosion-proof lamp can also be used as a dual-color temperature light source. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art 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.

[0020] Figure 1 This is a schematic diagram of the structure of the lamp holder provided in an embodiment of this application.

[0021] Figure 2 For along Figure 1 Sectional view along line AA in the middle.

[0022] Figure 3 for Figure 2 A magnified view of a section at point B in the middle.

[0023] Figure 4 for Figure 1 The exploded view of the lamp holder is shown.

[0024] Figure 5 for Figure 4 The diagram shows the structure of the light source board.

[0025] Figure 6 for Figure 4 The diagram shows the structure of the lens.

[0026] Figure 7 This is a structural schematic diagram of an explosion-proof lamp provided in another embodiment of this application.

[0027] Figure 8 This is a light spot diagram of a lens without microstructures inside a conventional lamp holder.

[0028] Figure 9 The lamp head provided in this embodiment has a lens with a microstructured light spot pattern.

[0029] The following are the labeling elements in the figure:

[0030] 10—Lamp holder 11—Housing 12—Light source board

[0031] 13—Lens 14—Explosion-proof face shield 15—Protective cover

[0032] 20—Driver; 30—Antenna; 40—Fasteners

[0033] 50—Bracket; 60—Sealing ring; 110—Light source cavity

[0034] 111—Groove; 112—Heat sink; 121—Baseboard

[0035] 122—Light-emitting component; 1221—LED chip; 131—Base plate

[0036] 132—Annular wall; 133—Flange; 1310—Receiving cavity

[0037] 1311—Intermediate Zone; 1312—Light-Emitting Zone; 13121—Light-Emitting Section

[0038] 13122—Connecting ring part; 13123—Abutting part. Detailed Implementation

[0039] The embodiments of this application are described in detail below, with examples of the embodiments provided in the appendix. Figures 1-7 As shown, the same or similar reference numerals throughout denote the same or similar elements or elements having the same or similar functions. 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] like Figures 1-6As shown, in one embodiment of this application, a lamp holder 10 is provided. The lamp holder 10 is used to emit light to achieve illumination. The lamp holder 10 can be applied to lighting fixtures such as chandeliers, table lamps, wall lamps, floor lamps, and explosion-proof lamps. In this embodiment, an explosion-proof lamp is used as an example for illustration, as follows:

[0044] Combination Figure 1 , Figure 2 and Figure 4 As shown, the lamp head 10 includes a housing 11, a light source plate 12, and a lens 13. The lens 13 is connected to the housing 11 and forms a light source cavity 110. The light source plate 12 is located inside the light source cavity 110. The light source plate 12 includes a substrate 121 and a plurality of light-emitting elements 122. The substrate 121 is mounted on the housing 11. The light-emitting elements 122 are disposed on the surface of the substrate 121 facing the lens 13. The light-emitting elements 122 are spaced apart along the circumference of the substrate 121. The surface of the lens 13 facing the light-emitting elements 122 is provided with microstructures (not shown) for emitting light. It should be noted that the microstructures refer to tiny surface shapes with specific functions, such as grooves, microlens arrays, or even diffusing microparticles.

[0045] In this embodiment of the lamp head 10, when in use, the light emitted by the light-emitting element 122 is emitted through the lens 13 to achieve illumination. Since the light-emitting elements 122 are arranged circumferentially along the substrate 121, and the lens 13 has microstructures for diverging light on the surface facing the light-emitting element 122, the light emitted by the light source plate 12 is relatively dispersed. At the same time, the light emitted by the light-emitting element 122 is refracted by the microstructure, and the light rays are interlaced, which makes the light emitted by the lens 13 have good uniformity of distribution, achieving the effect of uniform light spot and non-glaring light. At the same time, it can also reduce the phenomenon of inconsistent light color. In addition, in subsequent use, the lamp head 10 can also be used as a dual-color temperature light source.

[0046] In this embodiment of the application, combined with Figure 2 and Figure 3 As shown, the substrate 121 is a circuit board, which is fixed to the housing 11 by fasteners 40, thereby fixing the light source board 12. The lamp head 10 performs microstructure processing on the lens 13, which greatly reduces glare, increases the uniformity of the lamp head 10, and also reduces the weight of the lens 13.

[0047] In this embodiment, the number of light-emitting elements 122 can be 2, 3, 4 or more. The specific number can be selected according to actual needs and is not limited here. The more light-emitting elements 122 there are, the more uniform the light emitted by the light source board 12 will be and the better the light spot uniformity will be.

[0048] For example, combined Figure 4 and Figure 5As shown, the substrate 121 is circular, and there are eight light-emitting elements 122. These eight elements are arranged in a ring around the center of the circular substrate 121, and are evenly distributed around the perimeter of the substrate 121. This disperses the light emitted from the light source 12, resulting in good light spot uniformity and reduced glare. Figure 8 and Figure 9 As shown, the light emitted by the light source plate 12 is more intricate and intersecting after being refracted by the microstructure, and the light emitted by the lens 13 has better uniformity, which can achieve a better effect of uniform light spot and no glare.

[0049] In another embodiment of this application, the microstructure of the lamp head 10 is an irregular microstructure. This results in more intricate and intersecting light rays after refraction through the irregular microstructure, leading to better uniformity of the light emitted from the lens 13 and achieving a more uniform and less glaring light spot. Of course, in other embodiments, the microstructure can also be a regular microstructure.

[0050] In another embodiment of this application, combined with Figure 5 As shown, the light-emitting element 122 of the provided lamp head 10 includes a plurality of lamp beads 1221, which are evenly distributed on the substrate 121. The lamp beads 1221 in each light-emitting element 122 are evenly arranged, and the heat generated by the lamp beads 1221 is not concentrated, resulting in more uniform heat dissipation, which can reduce the heat loss of the lamp beads 1221, increase the luminous efficiency, and extend the service life of the lamp beads 1221. In addition, the light emitted by the light source board 12 is also more uniform, reducing the glare effect.

[0051] In a specific embodiment, combined with Figure 5 As shown, the lamp holder 10 provided has multiple groups of LED beads 1221, which are distributed circumferentially along the substrate 121. Within each group, the LED beads 1221 are arranged radially along the substrate 121. The LED beads on the entire substrate 121 are evenly distributed radially and circumferentially, resulting in more uniform light emission from the light source board 12, reducing glare. Furthermore, the heat generated by the LED beads is not concentrated, leading to more uniform heat dissipation, reduced heat loss, higher luminous efficacy, and longer lifespan. More specifically, the LED beads 1221 are high-efficiency LED beads, resulting in lower energy consumption and greater environmental friendliness compared to other types of light sources under the same illuminance requirements.

[0052] For example, combined Figure 5As shown, the LED beads 1221 are divided into three groups. The LED bead groups on both sides each include three LED beads 1221, which are spaced apart along the radial direction of the substrate 121. The LED bead group in the middle includes one LED bead 1221, which is located in the middle position. When the fastener 40 for fixing the substrate 121 to the housing 11 is provided at the position of the middle LED bead group, the light-emitting element 122 is provided with only two groups of LED beads 1221, that is, the two groups of LED beads 1221 are respectively provided on both sides of the fastener 40.

[0053] In another embodiment of this application, combined with Figure 3 , Figure 4 and Figure 6 As shown, the lens 13 of the provided lamp head 10 includes a base plate 131 and an annular wall 132 surrounding the base plate 131. One end of the annular wall 132 facing away from the base plate 131 is connected to the housing 11. The substrate 121 is located inside the annular wall 132, and the microstructure is disposed on the base plate 131. Specifically, the housing 11, the base plate 131, and the annular wall 132 form a light source cavity 110, and the light-emitting element 122 is covered inside the lens 13. In this way, the light emitted by the light-emitting element 122 is refracted and dispersed by the microstructure on the base plate 131 and then emitted, thereby reducing the glare effect of the light source plate 12.

[0054] In the embodiments of this application, combined with Figure 3 , Figure 4 and Figure 6 As shown, the housing 11 has a groove 111 surrounding the substrate 121. The end of the annular wall 132 facing away from the base plate 131 is provided with a flange 133. The flange 133 is inserted into the groove 111 and then fixed with fasteners 40. Then, casting material is poured into the groove 111. After the casting material cures, the connection between the housing 11 and the lens 13 is sealed, that is, the light source cavity 110 is sealed. The method of casting material sealing gives the lamp head 10 a good sealing effect and explosion-proof effect. That is, the lens 13 and the housing 11 surround to form a casting cavity (the casting cavity is the light source cavity 110), and the light source plate 12 is located in the casting cavity.

[0055] In this embodiment, the casting material can be silicone, epoxy resin, or two-component silicone. Of course, in other embodiments, the casting material can also be other materials, which will not be listed here.

[0056] In the embodiments of this application, combined with Figure 1 As shown, a heat sink 112 is provided on the outside of the housing 11. The heat sink 112 can dissipate the heat generated by the light source board 12 in a timely manner, so that the lamp head 10 has a good cooling effect. In addition, the housing 11 can be made of materials such as aluminum, copper and their alloys to improve the cooling effect of the lamp head 10.

[0057] In another embodiment of this application, combined with Figure 3 , Figure 4 and Figure 6 As shown, the base plate 131 of the provided lamp head 10 is recessed inwards from the positions of each light-emitting element 122, forming a receiving cavity 1310. The light-emitting elements 122 are located within the receiving cavity 1310, and microstructures are disposed on the bottom surface of the receiving cavity 1310 opposite to the light-emitting elements 122. The receiving cavity 1310 and the light-emitting element 122 are arranged in a one-to-one correspondence, that is, the light-emitting element 122 is located in a separate receiving cavity 1310, which can avoid mutual interference between the light emitted by two adjacent light-emitting elements 122. In addition, the light-emitting elements 122 on the light source plate 12 are distributed in multiple receiving cavities 1310, so the volume of each receiving cavity 1310 can be set to be smaller, thereby reducing the volume of the entire light source cavity 110 and improving the explosion-proof performance.

[0058] In a specific embodiment, combined with Figure 3 , Figure 4 and Figure 6 As shown, the base plate 131 includes a central region 1311 that abuts against the substrate 121 and a plurality of light-emitting regions 1312 distributed circumferentially along the central region 1311. Each light-emitting element 122 is correspondingly arranged with each light-emitting region 1312. The plurality of light-emitting regions 1312 are arranged sequentially around the central region 1311, so that light is emitted from the periphery of the entire lens 13, while there is no light or only a small amount of light emitted from the center. This disperses the light and reduces the glare. In addition, the central region 1311 of the base plate 131 abuts against the substrate 121, so that the base plate 131 can be supported by the housing 11. This improves the structural strength of the lens 13 and the housing 11 after they are connected together. At the same time, it can also reduce the volume of the light source cavity 110 and improve the explosion-proof effect.

[0059] Furthermore, combined Figure 3 , Figure 4 and Figure 6As shown, the light-emitting area 1312 includes a light-emitting portion 13121, a connecting ring portion 13122, and an abutting portion 13123. One end of the connecting ring portion 13122 is connected to the light-emitting portion 13121, and the connecting ring portion 13122 surrounds the light-emitting portion 13121. The connecting ring portion 13122 and the light-emitting portion 13121 form an accommodating cavity 1310. The abutting portion 13123 is connected to the other end of the connecting ring portion 13122, surrounds the connecting ring portion 13122, and abuts against the substrate 121. The light-emitting element 122 is located inside the connecting ring portion 13122, and the surface of the light-emitting portion 13121 facing the light-emitting element 122 is provided with microstructures. The light emitted by the light-emitting element 122 is emitted through the light-emitting part 13121. The light-emitting elements 122 are located one-to-one in each connecting ring part 13122. Two adjacent light-emitting elements 122 are separated by the connecting ring part 13122 to avoid mutual interference. At the same time, two adjacent accommodating cavities 1310 are separated by abutting part 13123 against the substrate 121, which can close the accommodating cavity 1310. This can minimize the volume of the light source cavity 110 formed by the lens 13 and the housing 11. In addition, it can also improve the structural strength after the lens 13 and the housing 11 are connected together, and improve the explosion-proof effect.

[0060] In another embodiment of this application, the lens 13 of the lamp head 10 is a PC lens 13 (PC: Polycarbonate). Specifically, the lens 13 is made of PC material by injection molding. Injection molding has high production efficiency. In addition, PC material has slightly lower light transmittance, which can reduce the glare effect of the lamp head 10.

[0061] In another embodiment of this application, combined with Figure 1 and Figure 4 As shown, the provided lamp head 10 also includes an explosion-proof face shield 14, which is mounted on the lens 13 and connected to the housing 11. The explosion-proof face shield 14 is also fixed to the outside of the lens 13, further enhancing the explosion-proof performance of the lamp head 10. It should be noted that the explosion-proof face shield 14 is a transparent shield to ensure light emission.

[0062] In this embodiment, the explosion-proof mask 14 and the housing 11 are sealed together by a sealing ring 60 to improve the sealing performance and explosion-proof performance of the lamp head 10.

[0063] In another embodiment of this application, the lamp head 10 also includes a protective cover 15, which covers the explosion-proof face shield 14 and serves to protect the explosion-proof face shield 14 and extend the service life of the lamp head 10; the explosion-proof face shield 14 and the protective cover 15 are fixed to the housing 11 by fasteners 40.

[0064] The fastener 40 mentioned above can be a screw, bolt, or bolt.

[0065] In another embodiment of this application, combined with Figure 7 As shown, an explosion-proof lamp is provided, including a driving device 20 and the aforementioned lamp head 10. The driving device 20 is connected to the lamp head 10 and is used to drive the light-emitting element 122 to emit light. Specifically, the driving device 20 is mounted on the housing 11 and electrically connected to the circuit board of the light source board 12 to control the light emission of the LED beads 1221. The driving device 20 is also provided with an antenna 30, which is connected to an intelligent system to realize intelligent control of the explosion-proof lamp. The driving device 20 is connected to a bracket 50, and the explosion-proof lamp can be suspended and fixed by the bracket 50 for convenient use.

[0066] The explosion-proof lamp of this embodiment employs the aforementioned lamp head 10. Because the light-emitting elements 122 are spaced circumferentially along the substrate 121, and the lens 13 has microstructures for diverging light on its surface facing the light-emitting elements 122, the light emitted from the light source plate 12 is relatively dispersed. Simultaneously, the light emitted from the light-emitting elements 122 undergoes refraction through the microstructures, resulting in intricate and intersecting light rays. This leads to good uniformity of light distribution emitted from the lens 13, achieving a uniform and non-glaring light spot effect. It also reduces the phenomenon of inconsistent light color. Furthermore, in subsequent use, this explosion-proof lamp can also be used as a dual-color temperature light source. Other technical effects of the lamp head 10 provided in the above embodiments are not elaborated upon here.

[0067] 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 lamp holder, characterized in that: The device includes a housing, a light source plate, and a lens. The lens is connected to the housing and forms a light source cavity. The light source plate is located inside the light source cavity. The light source plate includes a substrate and a plurality of light-emitting elements. The substrate is mounted on the housing. The plurality of light-emitting elements are disposed on the surface of the substrate facing the lens. The plurality of light-emitting elements are spaced apart along the circumference of the substrate and arranged in a ring array. The surface of the lens facing the light-emitting elements is provided with microstructures for emitting light. Each light-emitting element includes multiple LEDs, which are spaced apart on the substrate. The lens includes a base plate and an annular wall surrounding the base plate. One end of the annular wall facing away from the base plate is connected to the housing. The substrate is located inside the annular wall. The microstructure is disposed on the base plate. The position of the base plate opposite to each light-emitting element is recessed to form a receiving cavity, and the light-emitting element is located inside the receiving cavity. The LED beads are divided into multiple groups, and the multiple groups of LED beads are distributed at intervals along the circumference of the substrate. The LED beads in each group are arranged at intervals along the radial direction of the substrate. The base plate includes a central region that abuts against the substrate and a plurality of light-emitting regions distributed circumferentially along the central region, with each light-emitting element corresponding to each light-emitting region. The light-emitting area includes a light-emitting part, a connecting ring part, and an abutting part. One end of the connecting ring part is connected to the light-emitting part. The connecting ring part surrounds the light-emitting part. The connecting ring part and the light-emitting part surround to form the accommodating cavity. The light-emitting part has a flat fan-shaped structure. The light-emitting parts of the multiple light-emitting areas are distributed circumferentially along the middle area. The abutting portion is connected to the other end of the connecting ring portion, surrounds the connecting ring portion, and abuts against the substrate; The light-emitting element is located inside the connecting ring portion, and the light-emitting portion has the microstructure disposed on the surface facing the light-emitting element.

2. The lamp holder according to claim 1, characterized in that: The microstructure is an irregular microstructure.

3. The lamp holder according to claim 1 or 2, characterized in that: The lens is a PC lens.

4. The lamp holder according to claim 1 or 2, characterized in that: The lamp head also includes an explosion-proof face shield, which is mounted on the lens and connected to the housing.

5. An explosion-proof lamp, characterized in that: It includes a driving device and a lamp holder as described in any one of claims 1 to 4, wherein the driving device is connected to the lamp holder and is used to drive the light-emitting element to emit light.

Images