Panoramic on-site material evidence investigation lamp and annular lens processing method

Abstract

The invention provides a panoramic on-site material evidence investigation lamp and a lens processing method, the panoramic on-site material evidence investigation lamp comprises a plurality of LED strip light sources and a lens, the lens is in a hollow ellipsoid shape, a center line is arranged in the height direction of the lens, a mounting hole is formed in the center of the lens, and the mounting hole extends in the length direction of the center line; a cylindrical connecting piece is connected in the mounting hole, and the LED strip light sources are arranged on the outer side of the cylindrical connecting piece in an annular array mode to form a cylindrical light source. According to the panoramic physical evidence investigation lamp, 360-degree panoramic illumination can be achieved, the brightness is effectively improved, the irradiation range and brightness of light beams can be adjusted through the remote control module, limitation of the illumination range during investigation of investigation personnel is reduced, damage and omission of on-site physical evidences caused by the fact that the field of view of the investigation personnel is limited are avoided, and the investigation efficiency is improved. And the footprint scene investigation efficiency and quality are improved. The size and the weight of the exploration lamp can be reduced, use and carrying are convenient, meanwhile, the manufacturing cost is effectively reduced, and first-line application and popularization are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of on-site investigation lighting equipment, and in particular to a panoramic on-site physical evidence investigation lamp and a ring lens processing method. Background Art

[0002] The search and investigation of physical evidence such as traces on the ground and biological evidence at the scene plays an important role in today's criminal crime scene investigation. The detection of criminal cases sometimes relies on physical evidence such as footprints at the crime scene to find clues, which serve as an important piece of evidence and ultimately solve the case.

[0003] The high-quality flat light produced by the physical evidence investigation lamp is crucial for the search, discovery and extraction of physical evidence (footprints, bloodstains, handprints, biological traces and tire marks at traffic accident scenes, etc.) during the investigation of the case scene.

[0004] Existing evidence investigation lights usually use a strip light source group with a cylindrical lens to form a flat light beam in a certain direction, or a fan-shaped light beam with a certain irradiation angle range, and perform grazing incidence illumination in front of the equipment to search and extract traces at the scene.

[0005] However, the existing investigation lamps have a small irradiation range or a single direction, and the adjustment of the lighting direction or angle is more troublesome. They use a single row of high-power lamp beads, which generate obvious heat and require a heat dissipation device. In addition, the overall brightness of the light beam is low, the structure is complex, the size is large and heavy, it is not easy to carry, and the price is expensive. All of these are insufficient to meet the demand for high-quality physical evidence investigation lamps in case scene investigations. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a panoramic on-site evidence investigation lamp and a ring lens processing method, which can increase the lighting range of the evidence investigation lamp to 360° panoramic lighting.

[0007] The present invention is achieved in that:

[0008] In a first aspect, the present invention provides a panoramic on-site evidence investigation lamp, comprising a plurality of LED strip light sources and a lens for shaping the output light beams of the LED strip light sources, wherein the lens is ellipsoidal and has a center line in the height direction of the lens, and a mounting hole is provided in the center of the lens so that the lens forms a hollow annular structure, and the mounting hole extends in the length direction of the center line;

[0009] A columnar connector is connected in the mounting hole, and a plurality of LED strip light sources are arranged in an annular array outside the columnar connector to form a columnar light source. The length direction of the LED strip light source coincides with the length direction of the center line.

[0010] Furthermore, it also includes a power supply and a control device for controlling the switch of the LED strip light source, wherein the control device is provided with a positive input wiring point and a negative input wiring point, the positive output of the power supply is connected to the positive input wiring point via a first wire, the negative output of the power supply is connected to the negative input wiring point via a second wire, and the control device is electrically connected to the LED strip light source.

[0011] Furthermore, the control device includes a remote control module and a controller module, the remote control module includes a key unit, a first MCU unit and a radio frequency transmitting unit, and the first MCU unit is connected to the key unit and the radio frequency transmitting unit;

[0012] The controller module includes a radio frequency receiving unit, a second MCU unit and a control switch, the radio frequency receiving unit is communicatively connected to the radio frequency transmitting unit, the second MCU unit is connected to the radio frequency receiving unit and the control switch, one end of the control switch is electrically connected to the positive input wiring point, and the other end is connected to the LED strip light source through a third wire, and the end of the LED strip light source away from the control switch is commonly connected to the negative input wiring point.

[0013] Furthermore, the illumination range of the exploration light is divided into a plurality of illumination sectors, each illumination sector corresponds to an LED strip light source, the number of the control switches is consistent with the number of the LED strip light sources, and each of the LED strip light sources is controlled by a control switch.

[0014] Furthermore, the control switch is a relay.

[0015] Furthermore, each of the third wires is also provided with an adjustment knob module for adjusting the brightness of the LED strip light source.

[0016] Furthermore, the bottom of the lens is connected to a supporting base, the top of the lens is provided with a connecting plate, the adjusting knob module is installed on the top of the connecting plate, and the connecting plate is also connected to a handle.

[0017] Furthermore, the support base and the connecting plate are both made of transparent material. The support base and the connecting plate made of transparent material avoid the blocking of the light beam and realize unblocked and full-bright lighting.

[0018] Furthermore, the lens is made of acrylic or glass.

[0019] Furthermore, at least four LED strip light sources are provided.

[0020] In a second aspect, the present invention provides a lens processing method, based on the lens in the panoramic on-site evidence investigation lamp in the first aspect, the lens processing method comprises the following steps:

[0021] S1, clamping the blank on a CNC machine tool, and drilling a mounting hole along the center line using a milling process;

[0022] S2, clamping the lens processed in step 1 on a grinder, and grinding and polishing the inner wall of the mounting hole to a mirror surface;

[0023] S3, grinding the shape of the lens to make it ellipsoidal, and grinding and polishing the outer wall of the lens to a mirror surface;

[0024] In the steps S2 and S3, during grinding and polishing:

[0025] First use a grinding machine or hand-held grinder for rough grinding and polishing: use sandpaper of different specifications to grind from coarse to fine until the surface is smooth;

[0026] Afterwards, waxing is performed using a brush or polishing machine to improve the glossiness of the outer surface of the lens;

[0027] Finally, polish with a cloth wheel machine.

[0028] The advantages of the present invention are:

[0029] 1. Through the ellipsoidal lens and installing the LED strip light source at the center of the lens, 360° panoramic lighting of the investigation site can be achieved, increasing the irradiation range of the investigation light; through a number of control switches to control the switches of the corresponding LED strip light sources, the irradiation range of the physical evidence investigation light source with a viewing angle of 0 to 360° can be freely controlled and output, and the lens can also converge and shape the longitudinal light beams of multiple LED lamp bead light sources on the LED strip into a flat light source with higher brightness, providing a complex investigation site with an irradiation range and irradiation brightness that conforms to the actual site strip, and providing on-site investigators with a panoramic search for physical evidence, especially at night and other investigation sites with poor lighting conditions.

[0030] Traditional exploration lights can only illuminate in a certain direction or within a certain range, which will cause the illuminated area to be brighter on the central axis of the light source and darker as it moves away from the axis, making the brightness of the illuminated space uneven, affecting the quality of evidence search and evidence photography. However, the present invention adopts a rotationally symmetrical light strip layout, so that the illumination intensity of the light beam in all directions after shaping is absolutely uniform (uniform illumination intensity is also a key parameter of high-quality exploration lights).

[0031] The panoramic evidence investigation light of the present invention can break through the limitation of the lighting range of existing evidence investigation lights, realize panoramic illumination, reduce the limitations of lighting range and brightness for investigators during investigation, avoid the destruction and omission of on-site evidence due to limited field of vision of investigators, and improve the efficiency and quality of footprint on-site investigation.

[0032] 2. The present invention uses LED strip light sources as the light source of the exploration lamp. Under the condition of providing the same brightness, compared with the exploration lamp in the prior art, the present invention reduces the volume and weight of the exploration lamp, and the overall brightness of the light beam is significantly improved. Due to the LED strip design using multiple dispersed, low-power lamp beads, the beam energy of multiple lamp beads in the longitudinal direction is converged through an annular lens to form a flat, high-brightness grazing incident light beam in a sector. Compared with the traditional exploration lamp method of achieving high brightness through a row of single high-power lamp beads, no heat dissipation device is required, and the requirements for batteries and circuits are lower. It is easy to use and carry, and can meet the lighting needs of different types of sites without carrying other types of exploration light sources. It better reduces the load of the investigators and improves the efficiency and quality of case handling. At the same time, it effectively reduces the production cost, which is conducive to promotion and application in the front line. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0034] Figure 1 It is a schematic diagram of the structure of the panoramic evidence investigation lamp of the present invention.

[0035] Figure 2 for Figure 1 Middle AA section view.

[0036] Figure 3 for Figure 1 Schematic diagram of the explosion of the exploration lamp shown Figure 1 .

[0037] Figure 4 for Figure 1 Schematic diagram of the explosion of the exploration lamp shown Figure 2 .

[0038] Figure 5 It is a schematic diagram of the structure of the control device of the present invention.

[0039] Description of the numbers in the figure:

[0040] 1. LED strip light source; 2. lens; 21. mounting hole; 3. center line; 4. power supply; 5. control device; 51. positive input wiring point; 52. negative input wiring point; 53. remote control module; 531. key unit; 532. first MCU unit; 533. radio frequency transmitting unit; 54. controller module; 541. radio frequency receiving unit; 542. second MCU unit; 543. control switch; 544. adjustment knob module; 6. first wire; 7. second wire; 8. third wire; 9. support base; 10. connecting plate; 11. handle; 12. columnar connector; 13. main switch; 14. charging interface module. DETAILED DESCRIPTION

[0041] For example, see Figures 1 to 5 The present invention provides a panoramic on-site evidence investigation lamp, comprising a plurality of LED strip light sources 1 and a lens 2 for shaping the output light beam of the LED strip light source 1. The lens 2 has a converging effect. The LED strip light source 1 is in a strip structure, and has a plurality of LED lamp beads in the length direction of the LED strip light source 1. The lens 2 can shape the longitudinal light beam emitted by the LED strip light source 1 into a flat light source with higher brightness. The lens 2 is in a hollow ellipsoid shape, and has a center line 3 in the height direction of the lens 2, such as Figure 2 As shown, in the present invention, the shape of the lens 2 is an arc line that rotates around the center line 3. A mounting hole 21 is opened in the center of the lens 2, so that the lens forms a hollow ring structure. The mounting hole 21 extends in the length direction of the center line 3.

[0042] A cylindrical connector 12 is connected in the mounting hole, and the cylindrical connector 12 is a cylindrical structure. A plurality of LED strip light sources are arranged in an annular array outside the cylindrical connector 12 to form a cylindrical light source. The length direction of the LED strip light source 1 coincides with the length direction of the center line 3. The cylindrical light beam emitted by the LED strip light source 1 is shaped into a flat grazing incident fan-shaped light beam by the converging effect of the lens 2.

[0043] The physical evidence investigation lamp of the present invention can perform 360° panoramic lighting and light beam shaping, so that investigators can reduce damage to the scene during operation, notice more details and traces, and improve the quality of case handling.

[0044] Specifically, it also includes a power supply 4 and a control device 5 for controlling the switch of the LED strip light source 1. The power supply 4 is a rechargeable battery. The control device 5 is provided with a positive input wiring point 51 and a negative input wiring point 52. The positive output of the power supply 4 is connected to the positive input wiring point 51 through a first wire 6, and the negative pole of the power supply 4 is connected to the negative input wiring point 52 through a second wire 7. The control device 5 is electrically connected to the LED strip light source 1. In addition, the first wire 6 is also provided with a main switch 13 for controlling the power on and off of the exploration light. The power supply is also connected to a charging interface module 14. The main switch 13 and the charging interface module 14 are both arranged on the top of the connecting plate 10.

[0045] Specifically, the control device 5 includes a remote control module 53 and a controller module 54, the remote control module 53 includes a button unit 531, a first MCU unit 532 and a radio frequency transmitting unit 533, the first MCU unit 532 is connected to the button unit 531 and the radio frequency transmitting unit 533; the number of the button units 531 is consistent with the number of lighting sectors.

[0046] The controller module 54 includes a radio frequency receiving unit 541, a second MCU unit 542 and a control switch 543. The radio frequency receiving unit 541 is communicatively connected to the radio frequency transmitting unit 533. The second MCU unit 542 is connected to the radio frequency receiving unit 541 and the control switch 543. One end of the control switch 543 is electrically connected to the positive input wiring point 51, and the other end is connected to the LED strip light source 1 through a third wire 8. The end of the LED strip light source 1 away from the control switch 543 is commonly connected to the negative input wiring point 52.

[0047] When the survey light is completely dark, after pressing one or more button units 531, the first MCU unit 532 identifies the lighting sector corresponding to the button unit 531, and transmits a signal to the radio frequency receiving unit 541 through the radio frequency transmitting unit 533. The second MCU unit 542 analyzes the signal received by the radio frequency receiving unit 541, and according to the result of the analysis, closes the corresponding control switch 543, and the LED strip light source 1 is powered on, so as to light up the lighting sector.

[0048] Specifically, the illumination range of the exploration light is divided into a plurality of illumination sectors, each of which corresponds to an LED strip light source 1, and the number of the control switches 543 is consistent with the number of the LED strip light sources 1. Each LED strip light source 1 is controlled by a control switch 543. In the present invention, the 360° illumination range is divided into at least four individually controllable illumination sectors. The number of illumination sectors matches the number of LED strip light sources 1. Taking four illumination sectors as an example, by controlling the on and off of the control switch 543, it is possible to control whether the corresponding LED strip light source 1 is illuminated or not, thereby providing 90°, 180°, 270° and 360° illumination area options. Of course, in the present invention, the 360° illumination range can also be divided into six or more individually controllable illumination sectors.

[0049] Specifically, the control switch 543 is a relay.

[0050] Specifically, each of the third wires 8 is also provided with an adjusting knob module 544 for adjusting the brightness of the LED strip light source 1. By rotating the adjusting knob module 544, the brightness of the corresponding LED strip light source 1 can be achieved.

[0051] Specifically, the bottom of the lens 2 is connected to a support base 9, the top of the lens 2 is provided with a connecting plate 10, the adjusting knob module 544 is installed on the top of the connecting plate 10, and the connecting plate 10 is also connected to a handle 11. The handle 11 facilitates the surveyor to move the survey light.

[0052] Specifically, the support base and the connecting plate are both made of transparent material.

[0053] Specifically, the lens 2 is made of acrylic or glass.

[0054] Specifically, at least four LED strip light sources 1 are provided.

[0055] In the second embodiment, the present invention provides a lens processing method, which is based on the lens in the panoramic on-site evidence investigation lamp described in the first embodiment. In this embodiment, the lens is made of acrylic plate.

[0056] The lens processing method comprises the following steps:

[0057] S1, clamping the blank on a CNC machine tool, and drilling a mounting hole along the center line using a milling process;

[0058] S2, clamping the lens processed in step 1 on a grinder, and grinding and polishing the inner wall of the mounting hole to a mirror surface;

[0059] S3, grinding the shape of the lens to make it ellipsoidal, and grinding and polishing the outer wall of the lens to a mirror surface;

[0060] In the steps S2 and S3, during grinding and polishing:

[0061] First use a grinding machine or hand-held grinder for rough grinding and polishing: use sandpaper of different specifications to grind from coarse to fine until the surface is smooth; during this process, clean up the debris and particles on the tools and the surface of the acrylic board in time.

[0062] Afterwards, waxing is performed using a brush or polishing machine to improve the glossiness of the outer surface of the lens;

[0063] Finally, use a cloth wheel machine for polishing. When polishing: apply an appropriate amount of polishing agent on the surface of the lens, polish the surface at a uniform speed and force, and finally clean and dry it.

[0064] In the prior art, the light source of the exploration lamp adopts a single row of LED lamp beads. If the brightness of the exploration lamp is to be increased, the power of the LED lamp beads needs to be increased. However, the above operation will increase the volume of the exploration lamp, and the control circuit, heat dissipation and battery requirements of the exploration lamp are higher, which increases the weight and the cost of the exploration lamp. By adopting the LED strip light source 1 as the light source, the longitudinal light emitted by a single LED strip light source 1 can be shaped into a flat light source with higher brightness. Therefore, by adopting the LED strip light source 1, while providing the same brightness, the volume of the exploration lamp is smaller than that of the exploration lamp in the prior art, the weight is lighter, the cost is lower, it is easier to carry, and the requirements for batteries and circuits are lower, and there is no need to add an additional heat dissipation device.

[0065] By using an ellipsoidal lens 2 and installing the LED strip light source 1 at the center of the lens 2, 360° panoramic lighting of the investigation site can be achieved, increasing the irradiation range of the investigation light; by controlling the switches of the corresponding LED strip light sources 1 respectively through a plurality of control switches 543, the irradiation range of the footprint investigation light source with a viewing angle of 0 to 360° can be freely controlled and output, and the lens 2 can also shape the longitudinal light beam of the LED strip light source 1 into a flat light source with higher brightness, providing an irradiation range and irradiation brightness that conforms to the actual site strip for complex investigation sites, allowing on-site investigators to conduct a panoramic search for on-site physical evidence, especially at investigation sites with poor lighting conditions such as at night.

[0066] The panoramic evidence investigation lamp of the present invention can illuminate the whole scene, reduce the limitation of the lighting range for investigators during investigation, avoid the destruction and omission of on-site evidence due to the limited field of vision of investigators, and improve the efficiency and quality of footprint on-site investigation.

[0067] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A panoramic on-site evidence investigation light, characterized by: It comprises a plurality of LED strip light sources and a lens for shaping the output light beam of the LED strip light sources, wherein the lens is ellipsoidal and has a center line in the height direction of the lens, and a mounting hole is provided in the center of the lens so that the lens forms a hollow annular structure, and the mounting hole extends in the length direction of the center line; A columnar connector is connected in the mounting hole, and a plurality of LED strip light sources are arranged in an annular array outside the columnar connector to form a columnar light source. The length direction of the LED strip light source coincides with the length direction of the center line.

2. A panoramic on-site evidence investigation lamp as claimed in claim 1, characterized in that: It also includes a power supply and a control device for controlling the switch of the LED strip light source, wherein the control device is provided with a positive input wiring point and a negative input wiring point, the positive output of the power supply is connected to the positive input wiring point via a first wire, the negative output of the power supply is connected to the negative input wiring point via a second wire, and the control device is electrically connected to the LED strip light source.

3. A panoramic on-site evidence investigation lamp as claimed in claim 2, characterized in that: The control device includes a remote control module and a controller module, the remote control module includes a key unit, a first MCU unit and a radio frequency transmitting unit, and the first MCU unit is connected to the key unit and the radio frequency transmitting unit; The controller module includes a radio frequency receiving unit, a second MCU unit and a control switch, the radio frequency receiving unit is communicatively connected to the radio frequency transmitting unit, the second MCU unit is connected to the radio frequency receiving unit and the control switch, one end of the control switch is electrically connected to the positive input wiring point, and the other end is connected to the LED strip light source through a third wire, and the end of the LED strip light source away from the control switch is commonly connected to the negative input wiring point.

4. A panoramic on-site evidence investigation lamp as claimed in claim 3, characterized in that: The illumination range of the exploration light is divided into a plurality of illumination sectors, each illumination sector corresponds to an LED strip light source, the number of the control switches is consistent with the number of the LED strip light sources, and each LED strip light source is controlled by a control switch.

5. The panoramic on-site evidence investigation lamp according to claim 3, characterized in that: The control switch is a relay.

6. The panoramic on-site evidence investigation lamp according to claim 3, characterized in that: Each of the third wires is also provided with an adjustment knob module for adjusting the brightness of the LED strip light source.

7. A panoramic on-site evidence investigation lamp as claimed in claim 6, characterized in that: The bottom of the lens is connected to a support base, the top of the lens is provided with a connecting plate, the adjusting knob module is installed on the top of the connecting plate, and the connecting plate is also connected to a handle, and the support base and the connecting plate are both made of transparent material.

8. The panoramic on-site evidence investigation lamp according to claim 1, characterized in that: The lens is made of acrylic or glass.

9. The panoramic on-site evidence investigation lamp according to claim 1, characterized in that: At least four LED strip light sources are provided.

10. A method for processing an annular lens, characterized in that: Based on the lens in the panoramic on-site evidence investigation lamp according to any one of claims 1 to 9, the lens processing method comprises the following steps: S1, clamping the blank on a CNC machine tool, and drilling a mounting hole along the center line using a milling process; S2, clamping the lens processed in step 1 on a grinder, and grinding and polishing the inner wall of the mounting hole to a mirror surface; S3, grinding the shape of the lens to make it ellipsoidal, and grinding and polishing the outer wall of the lens to a mirror surface; In the steps S2 and S3, during grinding and polishing: First use a grinding machine or hand-held grinder for rough grinding and polishing: use sandpaper of different specifications to grind from coarse to fine until the surface is smooth; Afterwards, waxing is performed using a brush or polishing machine to improve the glossiness of the outer surface of the lens; Finally, polish with a cloth wheel machine.

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