CN109752837B - Cold light source for endoscope and endoscope using same - Google Patents
Cold light source for endoscope and endoscope using same Download PDFInfo
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- CN109752837B CN109752837B CN201910121118.2A CN201910121118A CN109752837B CN 109752837 B CN109752837 B CN 109752837B CN 201910121118 A CN201910121118 A CN 201910121118A CN 109752837 B CN109752837 B CN 109752837B
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- endoscope
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- cold light
- radiator
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 17
- 238000005286 illumination Methods 0.000 claims abstract description 17
- 239000013307 optical fiber Substances 0.000 claims abstract description 13
- 230000005855 radiation Effects 0.000 claims description 23
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000208818 Helianthus Species 0.000 description 1
- 235000003222 Helianthus annuus Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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- Endoscopes (AREA)
Abstract
A cold light source for an endoscope, which has good heat dissipation effect, low cost and no need of external optical fiber, can be directly arranged on a body of the endoscope, and the endoscope adopting the cold light source. The shell of the cold light source or the light outlet interface of the lens bracket is adaptively arranged on the body of the endoscope, or the light outlet interface can be adaptively connected with the illumination optical fiber interface of the body of the endoscope; a radiator and a radiating structure are arranged in the shell. The cold light source adopts the combination of a low-power LED light source and a heat dissipation structure arranged in the shell, so that the cold light source can be directly arranged on the endoscope for working. The endoscope formed by the cold light source has the advantages of low energy consumption, low manufacturing cost and small volume, and the light emitted by the cold light source can meet the lighting requirement of a common endoscope.
Description
Technical Field
The invention relates to an endoscope for medical and industrial detection, in particular to an LED cold light source which can be directly arranged on a body of the endoscope.
Background
The endoscope 1 is widely used in the medical and industrial fields.
1. The medical endoscope 1 is used for observing and checking the pathological changes of the cavity in the human body.
2. The industrial endoscope 1 is used for observing and inspecting the space such as the slit of the equipment and the interior of the pipeline.
The endoscope 1 on the market generally needs to be externally connected with a cold light source 2 for illumination, and light emitted by an external light source (such as a xenon cold light source, a halogen cold light source 2, an LED cold light source 2 and the like) is generally LED into an internal light guide beam of the endoscope 1 by a light guide beam 15 composed of optical fibers through a body 11 of the endoscope or an illumination light beam interface (see fig. 9).
With the rapid development of LED light sources in recent years, many endoscopes employ LED light sources as cold light sources for the endoscopes. In the prior art, only the previous xenon lamp and halogen lamp light source bulb is replaced by an LED light source, the connection structure of an endoscope and a cold light source is basically unchanged, and the structure has the following defects:
1. because the power of the LED light source is generally 50-120W (the power of the conventional xenon light source and halogen light source is generally 100-300W, and the heat quantity and the volume are large), a larger support of a heat dissipation system is required to ensure the normal operation of the light source, otherwise, the service life of the light source is greatly shortened due to poor heat dissipation.
2. Larger heat dissipation systems are bulky and not suitable for carrying and moving.
3. Light from the LED light source is directed into the endoscope through a longer optical fiber, which has a greater light attenuation, resulting in a lower light utilization.
4. The overall cost of the endoscope is increased by the use of high power light sources.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cold light source for an endoscope, which has good heat dissipation effect and low cost, and can be directly arranged on the body of the endoscope without an external optical fiber.
In order to solve the technical problems, the invention adopts the following technical scheme:
the cold light source for the endoscope comprises a shell, a lens bracket arranged at the front end in the shell and an LED light source, and is characterized in that: the light outlet interface of the shell or the lens bracket is adaptively arranged on the body of the endoscope, or the light outlet interface can be adaptively connected with the illumination optical fiber interface of the body of the endoscope; the LED light source is welded on the front end face of the radiator, and a heat dissipation structure for discharging heat generated by the LED light source is further arranged in the shell.
The heat radiation structure is a miniature heat radiation fan arranged in the shell and arranged between the radiator and the shell rear end cover, and a plurality of ventilation holes are arranged at intervals along the peripheral wall of the shell.
The light source driving dimming circuit is arranged in the shell after the miniature cooling fan, and the rear end cover is a dimming hand wheel capable of adjusting the light source driving dimming circuit.
The heat radiation structure is a ventilating chamber which is arranged in the shell and is arranged behind the radiator, and the ventilating chamber is connected with an external blower or exhaust fan through an air pipe.
The heat radiation structure is a heat radiation pipe which is arranged in the shell and is arranged behind the radiator and is internally filled with cooling medium, a medium outlet of the heat radiation pipe is arranged on one side of the shell, a medium inlet of the heat radiation pipe is arranged on the shell on the opposite side of the medium outlet, the medium outlet is connected with a peripheral medium conveying and circulating device through a soft heat radiation pipe, and the medium inlet is connected with the medium conveying and circulating device through a soft heat insulation pipe.
The cooling medium is gas or liquid.
The radiating pipe is in a shape of a return pipe.
An endoscope comprising a body of the endoscope connected to an endoscope tube, characterized in that: the cold light source for an endoscope of the present invention is mounted on the body of the endoscope.
An endoscope comprising a body of the endoscope connected to an endoscope tube and an illumination fiber optic interface for providing optical communication to the body of the endoscope, characterized in that: the cold light source for the endoscope is arranged on the illumination optical fiber interface.
The cold light source adopts the combination of the low-power LED light source and the heat dissipation structure arranged in the shell, so that the cold light source can be directly arranged on an endoscope to work. The endoscope adopting the cold light source has the advantages of low energy consumption, low manufacturing cost and small volume, and the light energy emitted by the cold light source can meet the general endoscope illumination requirement.
Drawings
FIG. 1 is a schematic view of a cold light source and endoscope connection structure according to the present invention.
FIG. 2 is a second schematic view of the connection structure between the cold light source and the endoscope of the present invention.
FIG. 3 is a third schematic view of the connection structure between the cold light source and the endoscope of the present invention.
FIG. 4 is a schematic diagram of a cold light source and endoscope connection structure according to the present invention.
FIG. 5 is a schematic diagram of an embodiment of a cold light source according to the present invention.
FIG. 6 is a schematic diagram of a cold light source according to an embodiment of the present invention.
FIG. 7 is a schematic diagram of an embodiment of a cold light source according to the present invention.
Fig. 8 is a schematic diagram of an example cold light source of the present invention.
Fig. 9 is a schematic diagram showing a connection structure between a cold light source and an endoscope in the prior art.
The reference numerals are as follows:
the endoscope 1, the body 11, the endoscope tube 12, the eyepiece 13, the illumination optical fiber interface 14, the optical beam 15, the cold light source 2, the housing 21, the lens holder 22, the optical lens 23, the radiator 24, the LED light source 25, the heat radiation structure 3, the micro heat radiation fan 31, the vent hole 32, the heat radiation tube 4, the medium conveying circulation device 41, the light source driving dimming circuit 5, the dimming hand wheel 51, the LED light source cable 6, and the power supply 7.
Detailed Description
1. Endoscope 1 of the present invention
As shown in fig. 1 to 4, the cold light source 2 of the present invention uses a low power LED light source 25 of 1 to 20w, and the cold light source 2 is used in an endoscope 1 (including an industrial endoscope 1 and a medical endoscope 1), so that the endoscope 1 with small volume, low energy consumption, small light attenuation and low manufacturing cost can be constituted.
The endoscope 1 composed of the cold light source 2 of the present invention can achieve the light guiding effect achieved by the endoscope 1 using the high-power LED light source 25 in the prior art.
The endoscope 1 of the present invention has several connection modes between the cold light source 2 and the body 11 of the endoscope 1:
1) As shown in fig. 1, the cold light source 2 is combined with the body 11 of the endoscope 1, the light outlet of the cold light source 2 is directly connected with the optical fiber arranged in the endoscope tube 12, and the LED light source cable 6 is LED out. One end of the body 11 is connected to the endoscope tube 12, and the other end is an eyepiece 13 (the eyepiece 13 may be connected to an imaging device such as an external camera) for a user to observe a target object. That is, the structure is actually formed by connecting the cold light source 2 to the body 11 of the endoscope 1.
The cold light source 2 in this embodiment has a built-in heat dissipation structure 3.
2) As shown in fig. 2, the connection mode is different from the point "1)", and a cooling channel which can be connected with an external cooling device is further arranged in the cold light source 2.
3) As shown in fig. 3, the light outlet of the cold light source 2 is directly connected with the self-contained illumination optical fiber interface 14 of the endoscope 1 in the prior art, and the LED light source cable 6 is LED out. Similarly, the body 11 has one end connected to the endoscope tube 12 and the other end provided with an eyepiece 13 (the eyepiece 13 may be connected to an imaging device such as an external camera) for a user to observe a target object. The illumination fiber optic interface 14 is disposed on a side wall of the body 11, and typically, the illumination fiber optic interface 14 is connected to the external high-power cold light source 2 through an external fiber optic bundle.
The cold light source 2 in this embodiment has a built-in heat dissipation structure 3.
4) As shown in fig. 4, the connection mode is different from the point "3"), in that a cooling channel which can be connected with an external cooling device is further arranged in the cold light source 2.
2. Cold light source 2 of the invention
The cold light source 2 is composed of a housing 21, a lens holder 22 mounted at the front end inside the housing 21, a heat sink 24, an LED light source 25, and a heat radiation structure 3 capable of discharging heat generated by the LED light source 25.
1. Housing 21
The casing 21 is cylindrical, has an open front end surface, is made of a material with good heat dissipation, such as aluminum products, and can be externally covered with a heat-insulating silica gel sleeve, and an interface adapted to be connected with the light guide interface or the illumination light guide fiber interface 14 on the endoscope 1, such as a connection structure of threads, a plug buckle, a male buckle, and the like, is arranged on the inner wall or the outer wall of the front end.
2. Lens holder 22
At least one optical lens 23 for homogenizing and condensing light is mounted on the lens holder 22, and the lens holder 22 is fixedly connected to the front end of the housing 21 together with the optical lens 23.
An interface adapted to the light guide interface or the illumination optical fiber interface 14 may be provided at the front end of the lens holder 22, and the interface may be provided with an interface provided on the inner wall or the outer wall of the front end of the housing 21, or may be provided simultaneously according to the specific structure of the endoscope 1.
3. Radiator 24
The heat sink 24 is formed of a metal having a good heat dissipation effect, such as an aluminum alloy, and is formed of a sunflower shape, a pin shape, a fin shape, or a built-in channel shape.
The preferred sunflower-shaped heat sink 24 of the present invention is composed of two parts, a cylindrical axially extending base and a plurality of fins (not shown) circumferentially divergently disposed around the peripheral wall of the base, each fin having a radially outer end with a projection having a cross section slightly wider than the fin thickness.
Correspondingly, an axially extending guide groove (not shown in the figure) is provided on the inner wall of the housing 21 corresponding to the position of the radiator 24, when the radiator 24 is fixedly connected in the housing 21, the protruding block on each fin on the radiator 24 is correspondingly inserted into one guide groove on the inner wall of the housing 21, and the protruding block and the guide groove are in single-side sliding contact, i.e. only one side surface of the protruding block is in contact with one side wall of the guide groove.
4. LED light source 25
The LED light source 25 is a copper-based light source or a light source having a solderable layer formed on the back surface thereof, and a solderable layer is also formed in the front surface mounting region of the base body of the inner heat sink 24, and the LED light source 25 is directly soldered in the mounting region of the base body. The structure has the advantages of fast heat dissipation and small volume, and can effectively reduce the thermal resistance and the light attenuation of the LED.
5. Heat radiation structure 3
The preferred heat dissipation structure 3 of the present invention has the following structures:
1) A micro heat radiation fan 31 is provided in the housing 21
a. As shown in fig. 5, a micro heat dissipation fan 31 is installed between the heat sink 24 and the rear cover of the housing 21, and a plurality of ventilation holes 32 are provided at intervals on the peripheral wall of the housing 21 at positions opposite to the micro heat dissipation fan 31, thereby further rapidly dissipating heat from the heat sink 24.
b. As shown in fig. 6, after the foregoing micro heat radiation fan 31, the light source driving dimming circuit 5 is also integrally installed in the housing 21, and in this structure, the rear end cap is provided as the dimming hand wheel 51, and the light source driving dimming circuit 5 can be conveniently adjusted by rotating the dimming hand wheel 51, thereby easily adjusting the light emission intensity of the LED light source 25.
The light source driving dimming circuit 5 is powered by an external power supply 7, the power supply 7 can output 3.6-36V direct current, the light source driving dimming circuit can also be a mobile power supply 7, and a USB interface can be adopted as a connecting interface between the light source driving dimming circuit and the mobile power supply 7.
2) A ventilation chamber is arranged in the shell 21
A ventilation chamber (not shown) is provided in the housing 21 behind the radiator 24, and is connected to an external exhaust fan or blower (not shown) through an external air duct, and corresponding air holes are provided in the peripheral wall of the housing 21.
When the exhaust fan is arranged outside, the wind holes can be arranged on the peripheral wall of the shell 21 at the position corresponding to the LED light source 25, and the structure can rapidly extract the heat generated by the LED light source 25; when a blower is provided outside, the air holes may be provided in the peripheral wall of the housing 21 at positions corresponding to the heat sink 24, and this structure can rapidly discharge the heat from the heat sink 24.
3) A radiating pipe 4 is arranged in the shell 21
a. As shown in fig. 7, a closed loop pipe made of aluminum material is provided in the housing 21 behind the radiator 24, a cooling medium such as flowing gas or liquid is injected into the loop pipe, a medium outlet of the radiating pipe 4 is provided at one side of the housing 21, and a medium inlet of the radiating pipe 4 is provided at the opposite side of the housing 21 to the medium outlet.
The medium delivery circulation device 41 is arranged outside the shell 21, the medium outlet is connected with the medium delivery circulation device 41 through a soft radiating pipe 4, and the medium inlet is connected with the medium delivery circulation device 41 through a soft heat preservation pipe.
b. As shown in fig. 8, after the aforementioned return pipe, the light source driving dimming circuit 5 is also integrally installed in the housing 21, and in this structure, the rear end cap is provided as the dimming hand wheel 51, and the light source driving dimming circuit 5 can be easily adjusted by rotating the dimming hand wheel 51, thereby easily adjusting the light emission intensity of the LED light source 25.
As before, the light source driving dimming circuit 5 is connected to the external power supply 7.
The invention has the following advantages:
1. the cold light source 2 is integrated with the endoscope 1 body.
The volume is reduced, the internal optical fiber (from the light source to the illumination end) does not need to turn, and the structure of the endoscope 1 body is simplified.
2. Is convenient to carry and move.
Particularly in occasions needing to be moved and used at any time, such as field rescue occasions, emergency disaster relief occasions, industrial field occasions and the like.
3. The cost is low.
Because the light guide beam 15 and the case structure of the cold light source 2 in the prior art are omitted, the power of the cold light source 2 is greatly reduced, the cost of the whole cold light source 2 is greatly reduced, and the popularization and the use are facilitated.
Claims (9)
1. A cold light source for an endoscope comprising a housing (21), a lens holder (22) mounted at a front end within the housing (21), and an LED light source (25), characterized in that: the light outlet interface of the shell (21) or the lens bracket (22) is adaptively arranged on the body (11) of the endoscope (1), or the light outlet interface can be adaptively connected with the illumination optical fiber interface (14) of the body (11) of the endoscope (1); a radiator (24) is arranged in the shell (21) behind the lens bracket (22), the LED light source (25) is welded on the front end surface of the radiator (24), and a heat dissipation structure (3) for removing heat generated by the LED light source (25) is also arranged in the shell (21);
the radiator (24) is formed by a cylindrical axially extending base body and a plurality of fins which are arranged around the peripheral wall of the base body in a divergent mode, the radial outer end of each fin is provided with a protruding block with a section wider than the thickness of the fin, correspondingly, the inner wall of the shell (21) corresponding to the radiator (24) is provided with an axially extending guide groove, the protruding block on each fin is correspondingly inserted into one guide groove, and the protruding block and the guide groove are in single-side sliding contact.
2. A cold light source for an endoscope as defined in claim 1, wherein: the heat radiation structure (3) is a miniature heat radiation fan (31) arranged in the shell (21) between the radiator (24) and the rear end cover of the shell (21) and a plurality of ventilation holes (32) arranged at intervals along the peripheral wall of the shell (21).
3. A cold light source for an endoscope as defined in claim 2, wherein: a light source driving dimming circuit (5) is arranged in the shell (21) after the miniature cooling fan (31), and the rear end cover is a dimming hand wheel (51) capable of adjusting the light source driving dimming circuit (5).
4. A cold light source for an endoscope as defined in claim 1, wherein: the heat radiation structure (3) is a ventilation chamber which is arranged in the shell (21) and is arranged behind the radiator (24), and the ventilation chamber is connected with an external blower or exhaust fan through an air pipe.
5. A cold light source for an endoscope as defined in claim 1, wherein: the heat radiation structure (3) is a heat radiation pipe (4) which is arranged in the shell (21) and is arranged behind the radiator (24) and internally filled with cooling medium, a medium outlet of the heat radiation pipe (4) is arranged on one side of the shell (21), a medium inlet of the heat radiation pipe (4) is arranged on the shell (21) on the opposite side of the medium outlet, the medium outlet is connected with a peripheral medium conveying and circulating device (41) through the soft heat radiation pipe (4), and the medium inlet is connected with the medium conveying and circulating device (41) through the soft heat insulation pipe.
6. A cold light source for an endoscope as defined in claim 5, wherein: the cooling medium is gas or liquid.
7. A cold light source for an endoscope as defined in claim 5, wherein: the radiating pipe (4) is in a shape of a loop pipe.
8. An endoscope comprising a body (11) of the endoscope (1) connected to an endoscope tube (12), characterized in that: a cold light source (2) for an endoscope (1) according to any one of claims 1-7 is mounted on a body (11) of the endoscope (1).
9. An endoscope comprising a body (11) of the endoscope (1) connected to an endoscope tube (12) and an illumination fiber optic interface (14) providing light communication to the body (11) of the endoscope (1), characterized in that: a cold light source (2) for an endoscope (1) according to any one of claims 1-7 is mounted on the illumination fiber optic interface (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121118.2A CN109752837B (en) | 2019-02-02 | 2019-02-02 | Cold light source for endoscope and endoscope using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121118.2A CN109752837B (en) | 2019-02-02 | 2019-02-02 | Cold light source for endoscope and endoscope using same |
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| Publication Number | Publication Date |
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| CN109752837A CN109752837A (en) | 2019-05-14 |
| CN109752837B true CN109752837B (en) | 2024-03-29 |
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