Panoramic on-site material evidence investigation lamp

Abstract

The utility model provides a panoramic on-site material evidence investigation lamp which 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, an installation hole is formed in the center of the lens, and the installation 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, the limitation of the illumination range during investigation of investigation personnel is reduced, damage and omission of on-site physical evidences caused by the limitation of the visual field of the investigation personnel 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 utility model relates to the technical field of on-site investigation lighting equipment, in particular to a panoramic on-site evidence investigation lamp. 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 work. 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, fingerprints, biological traces and tire marks at traffic accident scenes, etc.) during the investigation of the crime scene.

[0004] Existing evidence investigation lights usually use a strip light source group with a cylindrical lens to form a flat beam in a certain direction, or a fan-shaped beam with a certain irradiation angle range, which is used for 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 illumination range or a single direction, and the adjustment of the lighting direction or angle is relatively 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 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. Utility Model Content

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

[0007] The utility model is achieved in this way:

[0008] In a first aspect, the present invention provides a panoramic on-site evidence investigation light, comprising a plurality of LED strip light sources and a lens with a converging function, wherein the lens has a centerline in the height direction, 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 centerline;

[0009] A cylindrical connector is connected in the mounting hole, and a plurality of LED strip light sources are arranged in an annular array outside the cylindrical connector to form a cylindrical 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 through a first wire, and the negative output of the power supply is connected to the negative input wiring point through 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 transmission unit, and the first MCU unit is connected to the key unit and the radio frequency transmission 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. 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 lighting range of the exploration light is divided into a plurality of lighting sectors, each lighting 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 support base, the top of the lens is provided with a connecting plate, the adjustment 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 obstruction of the light beam and realize unobstructed and fully bright lighting.

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

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

[0020] The utility model discloses a kind of lens processing methods based on the lens in the panoramic on-site evidence investigation lamp in the first aspect, the lens processing method includes the following steps:

[0021] S1, blank is clamped on numerical control machine tool, adopts milling process, and installation hole is drilled along the center line;

[0022] S2, the lens treated in step 1 is clamped on grinding machine, and the inner wall of installation hole is polished to mirror surface;

[0023] S3, the appearance of lens is polished, and the appearance of lens is ellipsoidal, and the outer wall of lens is polished to mirror surface;

[0024] In the step S2 and S3, when polishing:

[0025] Firstly, rough polishing is carried out using grinding machine or hand-held polisher: different specifications of sandpaper are used for polishing, from coarse to fine, until the surface is smooth;

[0026] Subsequently, wax is applied using brush or polisher to improve the gloss of the outer surface of the lens;

[0027] Finally, polishing is carried out using cloth wheel machine.

[0028] The utility model has the advantages that:

[0029] 1、Through the ellipsoidal lens, and installing LED strip light source at the center of the lens, 360° panoramic illumination of the investigation site can be realized, and the illumination range of the investigation lamp is increased;By controlling the on-off of the corresponding LED strip light source through the control switch, the illumination range of the evidence investigation light source with a viewing angle of 0-360° can be freely controlled and outputted, and the lens can also converge and shape the longitudinal light beams of the multiple LED lamp beads on the LED strip into a flat light source with higher brightness, which provides the complex investigation site with the illumination range and illumination brightness that meet the actual site, and the panoramic evidence searching of the on-site investigation personnel, especially in the investigation site with poor lighting conditions such as at night.

[0030] The conventional investigation lamp can only illuminate in a certain direction or within a certain range, which causes the illuminated area to be brighter on the central axis of the light source and darker away from the axis, resulting in uneven spatial brightness of the illuminated area, which affects the searching of evidence and the quality of evidence photography;Since the lamp strip layout of the utility model is rotationally symmetrical, the illumination intensity of the light beams in each direction after shaping is absolutely uniform, and the uniform illumination intensity is also a key parameter of high-quality investigation lamp.

[0031] The panoramic physical evidence investigation lamp can break through the limitation of the illumination range of the existing physical evidence investigation lamp, realizes panoramic illumination, reduces the limitation of the illumination range and brightness of the investigation personnel during investigation, avoids the damage and omission of the on-site physical evidence caused by the limited vision of the investigation personnel, and improves the footprint on-site investigation efficiency and quality.

[0032] 2, the utility model discloses a LED strip light source is used as the light source of investigation lamp, under the condition of providing equivalent brightness, compared with the investigation lamp in the prior art, the utility model lightens the size and weight of investigation lamp, and the total brightness of light beam is obviously improved, since the design of the LED strip of multiple dispersed and low-power lamp beads, the light beam energy of multiple lamp beads in the vertical direction is converged to form a sector of flat and high-brightness grazing incidence light beam through the annular lens, compared with the method of realizing high brightness through a row of single high-power lamp beads in the traditional investigation lamp, the utility model does not need a heat dissipation device, and the requirement of battery and circuit is lower, convenient to use and carry, can satisfy the illumination demand of different types of scenes, does not need to carry other types of investigation light source, better reduces the load of the investigation personnel, improves the case handling efficiency and quality, and effectively reduces the manufacturing cost, is favorable for the popularization and application in the front line. BRIEF DESCRIPTION OF DRAWINGS

[0033] The utility model will be further described in connection with the embodiments with reference to the drawings.

[0034] Figure 1 It is panoramic physical evidence investigation lamp structure schematic drawing of the utility model.

[0035] Figure 2 It is Figure 1 A-A section view in the middle.

[0036] Figure 3 It is Figure 1 Exploded schematic diagram of the investigation lamp shown in the figure Figure 1 .

[0037] Figure 4 It is Figure 1 Exploded schematic diagram of the investigation lamp shown in the figure Figure 2 .

[0038] Figure 5 It is control device structure schematic drawing of the utility model.

[0039] Mark explanation in the drawing:

[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 1, please refer to Figures 1 to 5 The utility model provides a panoramic on-site evidence investigation light, comprising a plurality of LED strip light sources 1 and a lens 2 for shaping the light beam output by the LED strip light sources 1. The lens 2 has a converging effect. The LED strip light source 1 is a strip-shaped structure, and has a plurality of LED lamp beads along 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 a hollow ellipsoid, 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 rotated 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 annular structure. The mounting hole 21 extends in the length direction of the center line 3.

[0042] A cylindrical connector 12 is connected to the mounting hole. The cylindrical connector 12 has 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 converged by the lens 2 and shaped into a flat, grazing-incidence fan-shaped beam.

[0043] The utility model of the physical evidence investigation light can perform 360° panoramic lighting and light beam shaping, allowing investigators to 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 connection point 51 and a negative input connection point 52. The positive output of the power supply 4 is connected to the positive input connection point 51 through a first wire 6, and the negative pole of the power supply 4 is connected to the negative input connection 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 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 via the radio frequency transmitting unit 533. The second MCU unit 542 analyzes the signal received by the radio frequency receiving unit 541 and, based on the analysis result, closes the corresponding control switch 543, energizing the LED strip light source 1, thereby illuminating the lighting sector.

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

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

[0050] Specifically, each of the third conductive wires 8 is further 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 adjustment knob module 544 is mounted 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 a 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. Clamp the blank on a CNC machine tool and drill a mounting hole along the center line using a milling process;

[0058] S2. Clamp the lens processed in step 1 on a grinding machine and grind and polish the inner wall of the mounting hole to a mirror surface;

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

[0060] In 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 the debris and particles on the tools and the surface of the acrylic board in time.

[0062] Then, wax with a brush or polishing machine to improve the glossiness of the outer surface of the lens;

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

[0064] In the prior art, the light source of the exploration lamp uses 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 place higher requirements on the control circuit, heat dissipation and battery of the exploration lamp, which increases the weight and the cost of the exploration lamp. By using 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 using the LED strip light source 1, while providing the same brightness, the volume of this 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 on batteries and circuits are lower, and no additional heat dissipation device is required.

[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, thereby increasing the illumination range of the investigation light; by controlling the switches of the corresponding LED strip light sources 1 through a plurality of control switches 543, the illumination 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 complex investigation sites with an illumination range and illumination brightness that conforms to the actual site strip, and enabling 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 light of the utility model can illuminate the whole scene, reduce the limitation of the lighting range of the investigators during the investigation, avoid the destruction and omission of on-site evidence due to the limited field of vision of the investigators, and improve the efficiency and quality of footprint on-site investigation.

[0067] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely 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 within the scope of protection of the claims of the present invention.

Claims

1. A panoramic on-site evidence investigation light, characterized by: The invention comprises a plurality of LED strip light sources and a lens with a converging function, wherein a center line is provided in the height direction of the lens, 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 cylindrical connector is connected in the mounting hole, and a plurality of LED strip light sources are arranged in an annular array outside the cylindrical connector to form a cylindrical light source. The length direction of the LED strip light source coincides with the length direction of the center line.

2. The panoramic on-site evidence investigation light according to 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. 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 through a first wire, and the negative output of the power supply is connected to the negative input wiring point through a second wire. The control device is electrically connected to the LED strip light source.

3. The panoramic on-site evidence investigation light according to 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 transmission unit, and the first MCU unit is connected to the key unit and the radio frequency transmission 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. The end of the LED strip light source away from the control switch is commonly connected to the negative input wiring point.

4. The panoramic scene evidence investigation light according to claim 3, characterized in that: The lighting range of the exploration light is divided into a plurality of lighting sectors, each lighting 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 scene evidence investigation light according to claim 3, characterized in that: The control switch is a relay.

6. The panoramic scene evidence investigation light 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. The panoramic scene evidence investigation light according to 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 adjustment 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 scene evidence investigation light according to claim 1, characterized in that: The lens is made of acrylic or glass.

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

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