UV flashlight

Abstract

The invention discloses an ultraviolet flashlight, comprising: a barrel, an ultraviolet lamp fixed inside the barrel, a telescopic barrel arranged at the front end of the barrel, and a convex lens fixed inside the telescopic barrel. The light of the ultraviolet lamp is irradiated to the outside of the ultraviolet flashlight through the convex lens. One end in the irradiation direction of the ultraviolet lamp is the front end of the barrel. The telescopic barrel is telescoped along the axial direction of the barrel to drive the convex lens to move along the axial direction of the barrel. The convex lens at the front end of the ultraviolet flashlight can be telescoped along the irradiation direction of the ultraviolet lamp, so as to adjust the area and brightness of the light radiation to meet the requirements of different inspection environments and inspection objects.

Description

Technical Field

[0001] The invention belongs to the technical field of non-illumination special light sources, and in particular relates to an ultraviolet flashlight. Background Art

[0002] As a non-illumination special light source, ultraviolet light source is often used for fluorescence detection, such as banknote anti-counterfeiting, forensic criminal investigation, skin disease examination, photosensitizer fluorescence visualization, etc. Therefore, ultraviolet light source should be used for various aspects of fluorescence detection. Different detection environments have different requirements for ultraviolet light sources. Different detection objects require different illumination areas and light intensities. Traditional skin fluorescence inspection light sources, such as Wood's lamps, mostly use black light tubes, with weak light intensity and uneven brightness of the light spot. The flashlight-type banknote inspection light source has a single output mode, and can only change the radiation intensity and radiation area by changing the distance from the detection object. At this time, the radiation area and radiation intensity will change at the same time, which is difficult to meet the needs of in vivo fluorescence detection of living biological tissues, such as fluorescence detection of photosensitizers on the skin and mucous membranes.

[0003] The spot area and brightness of the ultraviolet light source in the prior art are not adjustable, and thus are not suitable for fluorescence observation of these parts, and cannot realize naked eye observation and fluorescence photography in a clinical examination environment.

[0004] With the development of clinical applications of photosensitizer-based photodynamic diagnosis and photodynamic therapy, the qualitative and quantitative examinations of the characteristic red fluorescence of skin and mucosal photosensitizers will inevitably increase, and a portable high-power multifunctional ultraviolet light source for fluorescence examination of skin and cavity mucosal photosensitizers is urgently needed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an ultraviolet flashlight in order to overcome the defects of the ultraviolet light source in the prior art that the radiation area and the brightness cannot be adjusted.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A UV flashlight comprises: a barrel, an UV lamp fixed inside the barrel, a telescopic barrel arranged at the front end of the barrel, and a convex lens fixed inside the telescopic barrel. The light of the UV lamp is irradiated to the outside of the UV flashlight through the convex lens. One end in the irradiation direction of the UV lamp is the front end of the barrel. The telescopic barrel is telescoped along the axial direction of the barrel to drive the convex lens to move along the axial direction of the barrel.

[0008] Preferably, a light-emitting mode control circuit board is provided inside the cylinder, the other end of the cylinder opposite to the front end is the tail end, and an elastic switch is provided at the tail end of the cylinder. The light-emitting mode control circuit board is electrically connected to the ultraviolet lamp and the elastic switch respectively, and the elastic switch is used to send a mode selection signal to the light-emitting mode control circuit board. The light-emitting mode control circuit board is used to output a mode control signal to the ultraviolet lamp after receiving the mode selection signal. The ultraviolet lamp is also used to operate in a preset light-emitting mode after receiving the mode control signal.

[0009] Preferably, one end of the telescopic cylinder is sleeved inside the cylinder body;

[0010] or

[0011] The telescopic cylinder is threadedly connected to the cylinder body.

[0012] Preferably, the preset lighting modes include a first brightness mode, a second brightness mode, and a strobe mode.

[0013] Preferably, the outer surface of the cylinder is provided with heat dissipation grooves.

[0014] Preferably, a clamp is provided on the outer surface of the cylinder, a fixed end of the clamp is connected to the cylinder, and a clamping end of the clamp clamps the cylinder.

[0015] Preferably, the elastic switch includes a button, which is cylindrical and sleeved on the tail end of the cylinder. A sealing ring is arranged between the button and the cylinder, and the sealing ring fills the gap between the button and the cylinder.

[0016] Preferably, a hexagonal base is further provided inside the cylinder, the ultraviolet lamp is arranged on the hexagonal base, the hexagonal base is fixed inside the cylinder, and the supporting surface of the hexagonal base is perpendicular to the axial direction of the cylinder.

[0017] Preferably, the hexagonal base is made of metal material, which is conducive to heat dissipation of the ultraviolet lamp. In addition, the use of metal material is convenient for welding with adjacent components, thereby improving the stability of the ultraviolet lamp.

[0018] Preferably, a rechargeable battery is also provided inside the cylinder, and the rechargeable battery is electrically connected to the ultraviolet lamp, the elastic switch, and the light-emitting mode control circuit board respectively.

[0019] Preferably, the material of the cylinder is anodized 6061-T6 aluminum alloy material.

[0020] The positive and progressive effect of the present invention is that the convex lens at the front end of the ultraviolet flashlight can be extended and retracted along the direction of ultraviolet lamp irradiation, thereby adjusting the area of ​​light radiation and the irradiation brightness to meet the needs of clinical examination. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1The figure is an exploded view of a UV flashlight according to a preferred embodiment of the present invention.

[0022] Figure 2 The diagram is a schematic diagram of a first positional relationship between an ultraviolet lamp and a convex lens of an ultraviolet flashlight according to a preferred embodiment of the present invention.

[0023] Figure 3 The diagram is a schematic diagram of a second positional relationship between the ultraviolet lamp and the convex lens of an ultraviolet flashlight according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described below by a preferred embodiment, but the present invention is not limited to the scope of the embodiment.

[0025] The ultraviolet flashlight of this embodiment, such as Figure 1 As shown, it includes: a barrel 9, an ultraviolet lamp 2 fixed inside the barrel 9, a telescopic barrel 10 arranged at the front end of the barrel 9, and a convex lens 1 fixed inside the telescopic barrel 10. The light of the ultraviolet lamp 2 is irradiated to the outside of the ultraviolet flashlight through the convex lens 1. One end of the ultraviolet lamp 2 in the irradiation direction is the front end 901 of the barrel 9. The telescopic barrel 10 is telescopic along the axial direction of the barrel 9 to drive the convex lens 1 to move along the axial direction of the barrel 9. For the convenience of explanation, Figure 1 The disassembled structure of the ultraviolet flashlight is shown, and the connecting wires therein are omitted. The ultraviolet lamp 2 can adopt an ultraviolet LED (light emitting diode) with a rated power of 3 watts, and the peak wavelength range of the ultraviolet light emitted by it is 390-410 nanometers.

[0026] In specific implementation, the telescopic tube 10 and the cylinder 9 are both cylindrical, and the telescopic tube 10 is sleeved with the cylinder 9. Specifically, one end of the telescopic tube 10 is sleeved inside the cylinder 9, and the outer wall of the telescopic tube 10 fits with the inner wall of the cylinder 9. By pushing and pulling the telescopic tube 10 along the axial direction of the cylinder 9, the distance between the convex lens 1 and the ultraviolet lamp 2 can be adjusted. Figure 2 As shown, when the ultraviolet lamp 2 is at position A, the distance between it and the convex lens 1 is D1. After the light of the ultraviolet lamp 2 passes through the convex lens 1, the radius of the irradiated area (light spot) on the plane at a distance L from the convex lens 1 is W1. Figure 3 As shown, when the ultraviolet lamp 2 is at position B, the distance between it and the convex lens 1 is D2. After the light of the ultraviolet lamp 2 passes through the convex lens 1, the radius of the irradiated area (light spot) on the plane at a distance L from the convex lens 1 is W2. Where D2 is greater than D1, according to the optical principle, it can be calculated that W1 is greater than W2. Therefore, by pushing and pulling the telescopic cylinder 10 along the axial direction of the cylinder body 9 to adjust the distance between the convex lens 1 and the ultraviolet lamp 2, the area of ​​the irradiated light spot can be achieved, so that the user can adjust it according to needs. At the same time, Figure 2 and Figure 3In two cases, when the power of UV lamp 2 is unchanged, Figure 3 In the case shown, the irradiated light spot is smaller, that is, its light is more concentrated, so the ultraviolet lamp 2 is Figure 3 The brightness of the projected light spot in the situation shown is higher.

[0027] In another optional embodiment of the ultraviolet flashlight of the present invention, the telescopic tube is threadedly connected to the barrel, the outer wall of the telescopic tube is provided with threads, and the inner wall of the barrel is correspondingly provided with matching threads. When in use, the telescopic tube and the barrel are relatively rotated to achieve the telescopic tube to be extended and retracted along the axial direction of the barrel.

[0028] Reference Figure 1 A hexagonal base 3 is also provided inside the cylinder 9, and the ultraviolet lamp 2 is arranged at the center of the hexagonal base 3. The hexagonal base 3 is fixed inside the cylinder 9, and the supporting surface of the hexagonal base 3 is perpendicular to the axial direction of the cylinder 9.

[0029] The hexagonal base 3 is made of metal material, which provides good heat dissipation for the ultraviolet lamp. In addition, the metal hexagonal base is easy to weld with adjacent components, thereby improving the stability of the ultraviolet lamp. The metal material is commercially available.

[0030] In order to achieve the control of different lighting modes, such as Figure 1 As shown, a light-emitting mode control circuit board 4 is provided inside the cylinder 9, and an elastic switch 8 is provided at the tail end 902 of the cylinder 9. The light-emitting mode control circuit board 4 is electrically connected to the ultraviolet lamp 2 and the elastic switch respectively. The elastic switch is used to send a mode selection signal to the light-emitting mode control circuit board 4. The light-emitting mode control circuit board 4 is used to output a mode control signal to the ultraviolet lamp 2 after receiving the mode selection signal. The ultraviolet lamp 2 is also used to operate in a preset light-emitting mode after receiving the mode control signal. The preset light-emitting mode includes a first brightness mode, a second brightness mode, and a strobe mode. The first brightness mode is a strong light mode, in which the ultraviolet lamp 2 operates at rated power. The second brightness mode is a weak light mode, in which the ultraviolet lamp 2 operates at 25% of the rated power. In strobe mode, the ultraviolet lamp 2 flashes at a preset frequency. As shown in FIG. Figure 1 As shown, the elastic switch includes a button 801, which is cylindrical and is sleeved on the tail end of the cylinder 9. A sealing ring 7 is arranged between the button and the inner wall of the cylinder 9. The sealing ring 7 fills the gap between the button and the cylinder 9, thereby achieving a good waterproof effect. The button 801 is disassembled. The light-emitting mode control circuit board 4 uses YX8233 (a light-emitting diode drive chip) as a drive chip.

[0031] When in use, after pressing the button 801 for the first time, the light-emitting mode control circuit board 4 will turn on the first brightness mode; at this time, pressing the button 801 again, the light-emitting mode control circuit board 4 will turn on the second brightness mode; at this time, pressing the button 801 again, the light-emitting mode control circuit board 4 will turn on the stroboscopic mode. The strong light mode can be used for fluorescent photography. The weak light mode and the stroboscopic mode can prevent PpIX (Protoporphyrin IX) from photobleaching, and are used to observe the distribution of PpIX and find potential lesions.

[0032] like Figure 1 As shown, the outer surface of the cylinder 9 is provided with a heat dissipation groove 5, which is preferably a fish gill type heat dissipation groove. The outer surface of the cylinder 9 is also provided with a clamp 6, the fixed end of the clamp 6 is connected to the cylinder 9, and the clamping end of the clamp 6 clamps the cylinder 9. A rechargeable battery (not shown in the figure) is also provided inside the cylinder 9, and the rechargeable battery is respectively electrically connected to the ultraviolet lamp 2, the elastic switch, and the light-emitting mode control circuit board 4 for providing electrical energy. The rechargeable battery is preferably a lithium-ion rechargeable battery with a rated output voltage of 3.7 volts and a full charge of 2030 mAh (milliampere-hours). The rechargeable battery is cylindrical in shape, matching the size of the inside of the cylinder 9.

[0033] In order to protect the convex lens 1, refer to Figure 1 The telescopic tube 10 includes a protruding edge 101 , which extends along the irradiation direction of the ultraviolet lamp 2 and protrudes from the outside of the convex lens 1 to prevent the convex lens 1 from being rubbed or bumped, thereby protecting the convex lens 1 .

[0034] The outer surface of the barrel 9 has a thread structure to improve the anti-slip property. The barrel 9 is made of an anodized 6061-T6 aluminum alloy material, which is easy to clean and disinfect. The anodized 6061-T6 aluminum alloy material is commercially available.

[0035] By telescoping the telescopic tube 10, the distance between the convex lens 1 at the front end of the ultraviolet flashlight of the present invention and the ultraviolet lamp 2 of the light source can be adjusted, thereby changing the size of the light spot in the irradiation area. According to the location and size of the lesion, the user can adjust the size of the light spot so that it better covers the entire lesion and its edge. When the telescopic tube 10 is stretched to the maximum point, the distance between the convex lens 1 and the ultraviolet lamp 2 is the largest, and a high-brightness focused light can be formed at this time, which can be used to observe the PpIX distribution of the inner wall of the organ cavity and the cervical opening.

[0036] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An ultraviolet flashlight, characterized in that: include: A barrel, an ultraviolet lamp fixed inside the barrel, a telescopic barrel arranged at the front end of the barrel, and a convex lens fixed inside the telescopic barrel, wherein the light of the ultraviolet lamp is irradiated to the outside of the ultraviolet flashlight through the convex lens, one end in the irradiation direction of the ultraviolet lamp is the front end of the barrel, and the telescopic barrel is used to telescope along the axial direction of the barrel to drive the convex lens to move along the axial direction of the barrel; The peak wavelength range of the ultraviolet light emitted by the ultraviolet lamp is 390-410 nanometers, and the ultraviolet light is used to prevent PpIX from bleaching.

2. The ultraviolet flashlight according to claim 1, characterized in that: The other end of the cylinder opposite to the front end is the tail end; a light-emitting mode control circuit board is arranged inside the cylinder, and an elastic switch is arranged at the tail end of the cylinder, the light-emitting mode control circuit board is electrically connected to the ultraviolet lamp and the elastic switch respectively, the elastic switch is used to send a mode selection signal to the light-emitting mode control circuit board, the light-emitting mode control circuit board is used to output a mode control signal to the ultraviolet lamp after receiving the mode selection signal, and the ultraviolet lamp is used to operate in a preset light-emitting mode after receiving the mode control signal.

3. The ultraviolet flashlight according to claim 1, characterized in that: One end of the telescopic cylinder is sleeved inside the cylinder body; or The telescopic cylinder is threadedly connected to the cylinder body.

4. The ultraviolet flashlight as claimed in claim 2, characterized in that: The preset lighting modes include a first brightness mode, a second brightness mode, and a stroboscopic mode.

5. The ultraviolet flashlight according to claim 1, characterized in that: The outer surface of the cylinder is provided with heat dissipation grooves.

6. The ultraviolet flashlight according to claim 1, characterized in that: The outer surface of the cylinder is provided with a clamp, the fixed end of the clamp is connected to the cylinder, and the clamping end of the clamp clamps the cylinder.

7. The ultraviolet flashlight as claimed in claim 2, characterized in that: The elastic switch comprises a button, which is cylindrical and sleeved on the rear end of the cylinder. A sealing ring is arranged at the gap between the button and the cylinder.

8. The ultraviolet flashlight according to claim 1, characterized in that: A hexagonal base is also provided inside the cylinder, the ultraviolet lamp is arranged on the hexagonal base, the hexagonal base is fixed inside the cylinder, and the supporting surface of the hexagonal base is perpendicular to the axial direction of the cylinder.

9. The ultraviolet flashlight according to claim 2, characterized in that: A rechargeable battery is also arranged inside the cylinder, and the rechargeable battery is electrically connected to the ultraviolet lamp, the elastic switch, and the light-emitting mode control circuit board respectively.

10. The ultraviolet flashlight according to claim 1, characterized in that: The material of the cylinder is anodized 6061-T6 aluminum alloy material.

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