CN220135296U - Light source assembly and footprint lamp - Google Patents
Light source assembly and footprint lamp Download PDFInfo
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- CN220135296U CN220135296U CN202321756432.6U CN202321756432U CN220135296U CN 220135296 U CN220135296 U CN 220135296U CN 202321756432 U CN202321756432 U CN 202321756432U CN 220135296 U CN220135296 U CN 220135296U
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- 238000010586 diagram Methods 0.000 description 7
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Abstract
The utility model discloses a light source assembly and a footprint lamp, wherein the footprint lamp comprises a shell, a light outlet arranged on the shell and a light source assembly arranged in the shell, the light source assembly comprises a mounting substrate, a luminous light source and a specular reflection assembly, and the luminous light source is positioned between the specular reflection assembly and the light outlet; the mirror reflection assembly comprises a first reflection assembly and a second reflection assembly which are arranged in an axisymmetric manner; the first reflecting component and the second reflecting component both comprise a parabolic reflector and a plane reflector; the two parabolic reflectors are adjacent and arranged without a space, the two plane reflectors are respectively arranged at the outer sides of the two parabolic reflectors, and the two plane reflectors respectively reflect the outgoing light rays of the light source overflowed from the two fixed arc edge positions to the front parts of the parabolic reflectors; the light source component and the footprint lamp have the advantages that the light width of the irradiation light output by the footprint lamp of the light source component during working is high, the brightness is high, the irradiation distance is long, the edge is clear, and the light source component and the footprint lamp are suitable for large-scale efficient mark detection.
Description
Technical Field
The utility model belongs to the technical field of footprint lamps for footprint exploration, and particularly relates to a light source assembly capable of emitting flat exploration sweeping light with larger width and a footprint lamp.
Background
The footprint lamp is mainly used for criminal investigation trace inspection and is used for collecting evidence of fingerprints, footprints, blood marks, fibers, blood, human tissue fluid, drug pesticide residues, explosive residues and the like at an accident site. In order to avoid the problems of missed detection and the like in trace detection, a common trace detector holds a footprint lamp to scan a crime in a square wave mode. In order to improve the criminal investigation trace inspection efficiency, the light spots for inspection in the output light of the footprint lamp are required to be rectangular, and the edge is clear, the brightness is high, and the light width is wide. In the prior art, the footprint lamp has the problems of uneven light-emitting of light spots, unclear edges of the light spots, unobvious irradiation marks, narrower light spot output, small irradiation range and the like. Like footprint lamp among the prior art generally only carries out even dispersion processing to the emergent light of LED lamp pearl through cylindrical lens, and the facula degree of penetrating is lower, and the facula edge is big than central luminance difference, and the luminance decay is obvious, and the boundary is fuzzy, and investigation searchlighting efficiency is low.
Disclosure of Invention
The utility model aims to provide a light source assembly and a footprint lamp, wherein the light width of illumination light output by the footprint lamp with the light source assembly during working is high in brightness, long in illumination distance, clear in edge and suitable for large-scale efficient trace detection.
The light source component comprises a mounting substrate, a luminous light source and a specular reflection component, wherein the specular reflection component is arranged on the mounting substrate and reflects light rays emitted by the luminous light source;
the mirror reflection assembly comprises a first reflection assembly and a second reflection assembly which are arranged in an axisymmetric manner; the first reflecting component and the second reflecting component comprise a parabolic reflector and a plane reflector;
the two parabolic reflectors are adjacent and are arranged without gaps; the parabolic reflector comprises a reflecting cambered surface, wherein the reflecting cambered surface is provided with two opposite straight sides and two opposite cambered sides;
the two arc sides on the parabolic reflectors are free arc sides and fixed arc sides respectively, two adjacent parabolic reflectors are connected through the two fixed arc sides, and the two free arc sides are positioned at the rear part of the reflecting surface at the joint of the two parabolic reflectors;
the two straight sides on the parabolic reflector are respectively a fixed straight side and a free straight side, and the fixed straight side is shorter than the free straight side; the fixed straight edge and the free straight edge on the parabolic reflector are connected with the fixed arc edge, the fixed straight edge is arranged on the installation base, and the free straight edge is positioned on the front side of the reflecting surface at the position of the fixed straight edge;
the two plane reflectors are respectively arranged at the outer sides of the two fixed arc edges, and respectively reflect the emergent rays of the light source overflowed from the positions of the two fixed arc edges to the front part of the parabolic reflector.
Preferably, the reflecting surfaces of the parabolic reflector and the plane reflector are plated with high-reflection films.
Preferably, the light-emitting light source comprises a first light-emitting body and a second light-emitting body which are axisymmetrically arranged, the first light-emitting body and the second light-emitting body are respectively arranged at the front parts of the two parabolic reflectors, and light source emergent rays of the first light-emitting body and the second light-emitting body are respectively irradiated to the first reflecting component and the second reflecting component.
Preferably, the first illuminant and the second illuminant are respectively positioned at the front lower parts of the two parabolic reflectors, so as to avoid the reflection light paths of the first reflection assembly and the second reflection assembly.
Preferably, the mounting substrate is provided with two accommodating grooves, the two accommodating grooves face the reflecting surfaces of the two parabolic reflectors respectively and are arranged in front of the two fixed straight sides respectively, the two accommodating grooves are provided with mounting inclined planes facing the reflecting surfaces of the parabolic reflectors, and the first luminous body and the second luminous body are mounted on the two mounting inclined planes respectively.
The footprint lamp comprises the light source assembly and a shell for mounting the light source assembly, wherein the shell comprises a fixed bottom plate and a cover body covered on the fixed bottom plate, a rectangular light outlet is formed in the cover body, the mounting substrate is mounted on the fixed bottom plate, reflecting surfaces of two parabolic reflectors face the light outlet, and the connection position of the two parabolic reflectors face the central line of the light outlet; the light-emitting source is arranged between the light outlet and the parabolic reflector.
Preferably, a light transmitting sheet is fixed on the light outlet, the light transmitting sheet is planar glass, and two sides of the light transmitting sheet are plated with an anti-reflection film.
Preferably, a protective cover plate is arranged at the front part of the light-transmitting sheet, and the protective cover plate is hinged with the shell.
Preferably, a power supply is further arranged in the shell, and the power supply is arranged at the rear part of the parabolic reflector and fixedly installed with the fixed bottom plate.
The technical scheme of the utility model has the beneficial effects that: the curved surface modeling structural design of the parabolic reflector is utilized to concentrate light emitted by the light source and uniformly reflect the light, and meanwhile, the plane reflector arranged on the outer side of the parabolic reflector has good light-concentrating and light-receiving effects, so that the light is ensured to have high brightness after being reflected by the parabolic reflector, the irradiation range is farther, and the exploration range is larger. Meanwhile, the first reflecting component and the second reflecting component are designed in an axisymmetric mode, so that flat scanning light with larger width is obtained.
The footprint lamp has the beneficial effects that: based on the structural design of the light source component, the flat scanning light with high brightness, large width, long irradiation range and small light loss difference value is obtained, and then the rectangular flat scanning light with clear boundary, uniform illumination in the full light domain and obvious trace presentation is obtained through the rectangular light outlet design on the shell of the footprint lamp.
Drawings
Fig. 1 is a schematic structural diagram of a light source assembly according to the technical scheme of the present utility model.
Fig. 2 is an isometric view of a light source assembly according to an embodiment of the present utility model.
Fig. 3 is a diagram showing a positional relationship between a light source and a specular reflection component in the present embodiment.
Fig. 4 is a bottom view of fig. 3.
Fig. 5 is a right side view of fig. 3.
Fig. 6 is a right side view of the drawing, in which the planar mirror is not shown.
Fig. 7 is a schematic structural diagram of a footprint lamp according to the technical scheme of the utility model.
Fig. 8 is a state diagram of the footprint lamp according to the technical scheme of the utility model in use.
Fig. 9 is a schematic diagram of an internal structure of a footprint lamp according to the technical scheme of the utility model.
Fig. 10 is a schematic diagram of an internal structure of a footprint lamp according to the present embodiment, in which the light-transmitting sheet is not shown.
Fig. 11 is a right side view of fig. 10.
Fig. 12 is a diagram showing the result of the footprint lighting experiment according to the technical scheme of the utility model.
Detailed Description
For the convenience of understanding the technical scheme of the present utility model, the technical scheme of the present utility model will be further described with reference to specific examples and drawings in the specification.
As shown in fig. 7 and 9, a footprint lamp 100 includes a light source assembly 200 and a housing 4 for mounting the light source assembly 200, the housing 4 includes a fixed base plate 40 and a cover 44 covering the fixed base plate 40, the cover 44 is provided with a rectangular light outlet 42, and the light source assembly 200 is mounted on the fixed base plate 40. The light source assembly 200 includes a mounting substrate 1, a luminescent light source 3 and a specular reflection assembly 2, the specular reflection assembly 2 is mounted on the mounting substrate 1, the mounting substrate 1 is mounted on a fixed bottom plate 40, and it is ensured that the specular reflection assembly 2 reflects the light source outgoing light 30 of the luminescent light source 3 and irradiates from a light outlet 42. The luminous source 3 is installed on the mounting substrate 1 and is located the front portion of the mirror reflection assembly 2 and is located the light outlet 42 rear portion, namely the luminous source 3 is located between the mirror reflection assembly 2 and the light outlet 42, and the luminous source 3 is close to the structural design of the light outlet 42, so that when the footprint lamp 100 works, under the condition that the distance between the footprint lamp and the detection area is unchanged, the distance between the luminous source 3 and the detection area is shortened, light loss irradiated to the detection area is reduced, light spot brightness irradiated to the detection area is high, and the edge is clear.
In the above technical solution, the design of the rectangular light outlet 42 structure of the footprint lamp 100 realizes the selection of the large-area reflected light reflected by the mirror reflection assembly 2, and obtains the flat scanned light with clear boundary and wide width. Namely, the light outlet 42 is of a rectangular structure, so that a few areas with low illumination brightness in the light reflected by the specular reflection assembly 2 can be eliminated, and only areas with high illumination brightness are selected, so that the light scanning exploration on the trace site is realized.
As shown in fig. 1 to 6, a schematic structural view of a light source assembly is disclosed, and the light source assembly 200 includes a mounting substrate 1, a light emitting source 3, and a specular reflection assembly 2. The specular reflection component 2 is mounted on the mounting substrate 1 and reflects the light source outgoing light 30 of the light emitting source 3. The specular reflection assembly 2 includes a first reflection assembly 21 and a second reflection assembly 22 disposed in an axisymmetric manner. The first reflecting element 21 and the second reflecting element 22 each comprise a parabolic mirror 211 and a planar mirror 222.
Based on the above technical solution, the parabolic reflector 211 gathers and reflects the light source outgoing light 30 emitted from the light source assembly 200, and irradiates through the light outlet 42 on the housing 4 of the footprint lamp 100. The parabolic mirror 211 condenses and uniformly reflects the light so that the reflected light is uniformly illuminated. The mirror reflection assembly 2 adopts the symmetrical arrangement of the first reflection assembly 21 and the second reflection assembly 22, on one hand, the reflection surface is enlarged to obtain a larger irradiation area, on the other hand, the adjacent and closely-attached symmetrical first reflection assembly 21 and the symmetrical second reflection assembly 22 have certain reflection light coincidence at the connection position, and the illumination brightness of the middle area of the mirror reflection assembly 2 is enhanced.
In this embodiment, as shown in fig. 2, two parabolic mirrors 211 are disposed adjacently without gaps. The parabolic reflector 211 comprises a reflective arc having two opposed straight sides 204 and two opposed arcuate sides 201. The two arc sides 201 on the parabolic reflector 211 are a free arc side 203 and a fixed arc side 202 respectively, and the two adjacent parabolic reflectors 211 are connected through the two fixed arc sides 202. Both free arc edges 203 are located at the rear of the reflecting surface at the junction of the two parabolic reflectors 211. The two straight sides 204 on the parabolic mirror 211 are a fixed straight side 206 and a free straight side 205, respectively, and the fixed straight side 206 is shorter than the free straight side 205. The fixed straight edge 206 and the free straight edge 205 on the parabolic mirror 211 are both connected with the fixed curved edge 202, and the fixed straight edge 206 is disposed on the front side of the reflecting surface 20 where the fixed straight edge 206 is located, and the free straight edge 205 is disposed substantially on the mounting.
Based on the above technical solution, after the two parabolic reflectors 211 are installed, the cross section of the two parabolic reflectors 211 is V-shaped, and the reflecting surface 20 is the outer surface of the V-shaped cross section, so that the whole effective reflecting surface of the reflecting surface 20 formed by the two parabolic reflectors 211 can be expanded outwards while the two parabolic reflectors 211 are ensured to collect and reflect the light rays 30 emitted from the light source, i.e. the illumination area of the light rays reflected by the specular reflection component 2 is expanded.
Based on the above technical solution, in the parabolic reflector 211, the free straight edge 205 is located at the front side of the reflecting surface 20 at the position of the fixed straight edge 206, so that the parabolic reflector 211 can achieve up-and-down light condensation (both the free straight edge 205 and the fixed straight edge 206 perform light condensation), and light is prevented from overflowing from the upper edge and the lower edge of the parabolic reflector 211, thereby causing light loss.
In this embodiment, two plane mirrors 222 are respectively disposed outside the two fixed arc edges 202, and the two plane mirrors 222 respectively reflect the light source outgoing light 30 overflowed from the positions of the two fixed arc edges 202 to the front portion of the parabolic mirror 211. The two plane reflectors 222 have good light condensing and receiving effects, so that light overflowing from the edges of the parabolic reflectors 211 is reflected and concentrated and reaches the front part of the parabolic reflectors 211, and is reflected again by the parabolic reflectors 211, so that the light reflected by the two parabolic reflectors 211 and the two plane reflectors 222 has high brightness, a longer irradiation range and a larger exploration range. The two plane reflectors 222 are arranged to realize left and right light receiving at the outer sides of the two parabolic reflectors 211, so that light is prevented from overflowing from the positions at the two outer sides of the parabolic reflectors 211, and light loss is avoided.
In this embodiment, the reflecting surfaces of the parabolic mirror 211 and the plane mirror 222 are coated with a high reflection film. The parabolic mirror 211 and the plane mirror 222 may be made of metal or glass material, and the reflection surface is coated with a high reflection film to avoid light refraction and reduce light loss.
In this embodiment, the light-emitting source 3 includes a first light-emitting body 31 and a second light-emitting body 32 that are axisymmetrically arranged, and the first light-emitting body 31 and the second light-emitting body 32 are respectively disposed in front of the two parabolic reflectors 211. The light source outgoing rays 30 of the first light emitter 31 and the second light emitter 32 are respectively irradiated to the first reflecting component 21 and the second reflecting component 22. Through the design of the first illuminant 31 and the second illuminant 32, the light source emergent light 300 is uniformly irradiated onto the two parabolic reflectors 211, then the light spots with clear and uniform light effect are formed through the reflection of the first reflection assembly 21 and the second reflection assembly 22, and the light spots with clear and uniform light effect are irradiated onto the exploration area through the light outlet 42, so that the rectangular light spots with clear and uniform light effect are obtained. By using the luminous source 3 composed of the first luminous body 31 and the second luminous body 32, the light reflected by the specular reflection component 200 has high intensity at the center of the specular reflection component, i.e. a rectangular light spot with clear boundary and uniform light effect is obtained.
In this embodiment, the first illuminant 31 and the second illuminant 32 are respectively located at the front lower parts of the two parabolic reflectors 211, so as to avoid the reflection light paths of the first reflection assembly 21 and the second reflection assembly 22. The first light emitter 31 and the second light emitter 32 are positioned in front of the first reflecting component 21 and the second reflecting component 22, so that all light rays are gathered and irradiated on the two parabolic reflectors 211 as much as possible, and light loss caused by light ray overflowing is reduced. Meanwhile, the positions of the first and second light emitters 31 and 32 cannot affect and interfere with the reflected light paths of the two parabolic reflectors 211.
In this embodiment, two accommodating grooves are disposed on the mounting substrate 1, the two accommodating grooves respectively face the reflecting surfaces 20 of the two parabolic reflectors 211 and are respectively disposed in front of the two fixed straight edges 206, the two accommodating grooves each have an installation inclined surface 33 facing the reflecting surfaces 20 of the parabolic reflectors 211, and the first illuminant 31 and the second illuminant 32 are respectively installed on the two installation inclined surfaces 33. The installation inclined plane 33 is used for installing and positioning the two first light emitters 31 and the two second light emitters 32, and fixing the light paths of the first light emitters 31 and the second light emitters 32 irradiated onto the two parabolic reflectors 211.
In this technical solution, the mounting substrate is mounted on the fixing base plate 40, and the reflecting surfaces of the two parabolic reflectors face the light outlet 42, and the connection position of the two parabolic reflectors faces the center line of the light outlet 42. The light emitting source is placed between the light outlet 42 and the parabolic mirror. The light effect of the light spot irradiated by the light outlet 42 is uniform, and the position with the strongest illumination is the center line position of the light outlet 42, so that a rectangular light spot with clear boundary and uniform light effect is obtained.
As shown in fig. 8 and 9, in the footprint lamp in this technical solution, a light-transmitting sheet 43 is fixed on the light outlet 42, the light-transmitting sheet 43 is planar glass and is coated with an anti-reflection film on both sides. The light transmitting sheet 43 uniformizes the light reflected by the specular reflection assembly 2, and protects the light emitting light source 3 and the specular reflection assembly 2 in the housing. The anti-reflection film is provided to prevent the light transmitting sheet 43 from reflecting light and from causing light loss.
A protective cover 41 is provided in front of the light-transmitting sheet 43, and the protective cover 41 is hinged with the housing 4. When the footprint lamp is used, the protective cover plate 41 is turned outwards, and the light outlet 42 and the light-transmitting sheet 43 are exposed, so that light can be smoothly and normally radiated. When the footprint lamp is not in use, the protective cover plate 41 is closed to protect the light-transmitting sheet 43, and meanwhile, external dust is prevented from entering the inside of the footprint lamp.
The footprint lamp in this technical scheme still is provided with power 45 in casing 4, and power 45 is portable power source, and arranges in parabolic reflector 211 rear portion and with fixed baseplate 40 fixed mounting, portable power source's setting for footprint lamp convenient to use.
In order to further facilitate understanding of the footprint lamp according to the technical scheme of the present utility model by a person skilled in the art and to verify flat scanning light emitted from the footprint lamp according to the present scheme, which has high brightness, large width, long irradiation range and small light loss difference, an experiment is performed on the footprint lamp obtained according to the present technical scheme.
The implementation conditions are as follows:
1. footprint lamp size is achieved: the width of the specular reflection component 2 in the footprint lamp is 650mm and the height is 200mm.
2. An opaque screen was used as the investigation region, and the footprint lamp was 1500mm from the screen.
Experimental results: the light emitted by the footprint lamp irradiates onto the opaque screen in a vertical mode, and a light spot is obtained on the opaque screen, as shown in fig. 12. In a spot with a height of about 138mm and a width of 1460mm, the difference between the brightness of the center of the spot and the brightness at the edge is less than 35%. It is known that the light attenuation difference value of the like products on the current market is above 60%, and therefore, the footprint lamp of the technical scheme of the utility model can emit rectangular light spots with clear boundaries and uniform light effect, and the light is uniform in the full light field, and the trace is obvious.
While the present utility model has been described above by way of example with reference to the embodiments and the accompanying drawings, it is apparent that the specific implementation of the present utility model is not limited by the foregoing, and it is within the scope of the present utility model to apply the inventive concept and technical solution to other situations without any substantial improvement or improvement.
Claims (9)
1. The light source assembly is characterized by comprising a mounting substrate, a luminous light source and a specular reflection assembly, wherein the specular reflection assembly is mounted on the mounting substrate and reflects light rays emitted by the luminous light source;
the mirror reflection assembly comprises a first reflection assembly and a second reflection assembly which are arranged in an axisymmetric manner; the first reflecting component and the second reflecting component comprise a parabolic reflector and a plane reflector;
the two parabolic reflectors are adjacent and are arranged without gaps; the parabolic reflector comprises a reflecting cambered surface, wherein the reflecting cambered surface is provided with two opposite straight sides and two opposite cambered sides;
the two arc sides on the parabolic reflectors are free arc sides and fixed arc sides respectively, two adjacent parabolic reflectors are connected through the two fixed arc sides, and the two free arc sides are positioned at the rear part of the reflecting surface at the joint of the two parabolic reflectors;
the two straight sides on the parabolic reflector are respectively a fixed straight side and a free straight side, and the fixed straight side is shorter than the free straight side; the fixed straight edge and the free straight edge on the parabolic reflector are connected with the fixed arc edge, the fixed straight edge is arranged on the mounting substrate, and the free straight edge is positioned at the front side of the reflecting surface at the position of the fixed straight edge;
the two plane reflectors are respectively arranged at the outer sides of the two fixed arc edges, and respectively reflect the emergent rays of the light source overflowed from the positions of the two fixed arc edges to the front part of the parabolic reflector.
2. The light source assembly of claim 1, wherein the reflective surfaces of the parabolic reflector and the planar reflector are each coated with a highly reflective film.
3. The light source assembly of claim 1, wherein the light source comprises a first light emitter and a second light emitter which are arranged in an axisymmetric manner, the first light emitter and the second light emitter are respectively arranged at the front parts of the two parabolic reflectors, and light source emergent rays of the first light emitter and the second light emitter are respectively irradiated to the first reflecting assembly and the second reflecting assembly.
4. A light source assembly as recited in claim 3, wherein said first light emitter and said second light emitter are respectively positioned at front lower portions of said two parabolic reflectors to avoid reflected light paths of said first reflective assembly and said second reflective assembly.
5. The light source module as recited in claim 4, wherein two receiving grooves are provided on the mounting substrate, the two receiving grooves face the reflecting surfaces of the two parabolic reflectors and are respectively disposed at the front sides of the two fixed straight sides, the two receiving grooves each have a mounting inclined surface facing the reflecting surface of the parabolic reflector, and the first illuminant and the second illuminant are respectively mounted on the two mounting inclined surfaces.
6. A footprint lamp, comprising the light source assembly according to any one of claims 1 to 5 and a housing for mounting the light source assembly, wherein the housing comprises a fixed bottom plate and a cover body covered on the fixed bottom plate, a rectangular light outlet is arranged on the cover body, the mounting substrate is mounted on the fixed bottom plate, the reflecting surfaces of the two parabolic reflectors face the light outlet, and the connection position of the two parabolic reflectors faces the central line of the light outlet; the light-emitting source is arranged between the light outlet and the parabolic reflector.
7. The footprint lamp of claim 6, wherein a light transmitting sheet is fixed on the light outlet, the light transmitting sheet is planar glass and is coated with an anti-reflection film on both sides.
8. The footprint lamp of claim 7 in which said light transmissive sheet is provided at a front portion thereof with a protective cover plate hinged to said housing.
9. The footprint lamp of claim 6 in which a power source is also provided in said housing, said power source being disposed behind said parabolic reflector and fixedly mounted with said fixed base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321756432.6U CN220135296U (en) | 2023-07-06 | 2023-07-06 | Light source assembly and footprint lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321756432.6U CN220135296U (en) | 2023-07-06 | 2023-07-06 | Light source assembly and footprint lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220135296U true CN220135296U (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321756432.6U Active CN220135296U (en) | 2023-07-06 | 2023-07-06 | Light source assembly and footprint lamp |
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| Country | Link |
|---|---|
| CN (1) | CN220135296U (en) |
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2023
- 2023-07-06 CN CN202321756432.6U patent/CN220135296U/en active Active
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