KR101965423B1 - Optical composite disinfection and curing device - Google Patents

Abstract

The present invention relates to a photocatalytic disinfection and polymerization reactor, and more particularly, to a sterilizing light irradiation unit for providing a photo sterilizing function to a single body and a structure for selectively using a curing light irradiation unit for photo- It can be provided in the same size as that of a device that provides only a single function, and it is not necessary to provide each for sterilization and curing, so that it is possible to reduce the cost of purchasing equipment, The present invention relates to a photocomposite sterilizing polymerizer capable of reducing the repair cost, for example, by simply replacing the existing components and reusing the existing components.

Description

[0001] OPTICAL COMPOSITE DISINFECTION AND CURING DEVICE [0002]

The present invention relates to a photocatalytic disinfection and polymerization reactor, and more particularly, to a sterilizing light irradiation unit for providing a photo sterilizing function to a single body and a structure for selectively using a curing light irradiation unit for photo- It can be provided in the same size as that of a device that provides only a single function, and it is not necessary to provide each for sterilization and curing, so that it is possible to reduce the cost of purchasing equipment, The present invention relates to a photocomposite sterilizing polymerizer capable of reducing the repair cost, for example, by simply replacing the existing components and reusing the existing components.

Generally, a photopolymerizer used for dental treatment is provided for disinfecting the oral part of a patient who receives dental treatment by irradiating light, or for accelerating hardening of a dental treatment resin.

Such a light curing device utilizes a specific wavelength generated according to the intrinsic electron level of a semiconductor material that generates light when an electric current is flowed, and changes the dental treatment material of a monomer structure used for filling, coating, It is most widely used as a medical device that causes hardening effect.

However, all currently used photopolymerisers are single function products that only have a hardening effect. In order to be provided with a sterilizing function that can treat disease infections that may occur during the dental treatment, especially during the filling or application of resin, But this has the disadvantage of increasing equipment purchase costs.

Accordingly, there is a growing demand for polymerizers that can provide both a curing function and a sterilizing function without the need to purchase additional equipment. In some cases, both a luminescent lamp that provides a curing function to one device and a luminescent lamp that performs sterilization And a polymerizer that provides both functions is proposed. However, since the LEDs for sterilization and curing are mounted on one PCB, the cross-sectional area of the polymerizer is increased, and when one of the LEDs is defective, the entire LED must be replaced. In addition, the above-mentioned cross-sectional increase increases the area of covering the mouth when the polymerizer is inserted into the mouth of the therapist. Therefore, it is difficult for the dentist to perform treatment while confirming the treated area with the naked eye, and it is inconvenient for long-

Korean Patent Laid-Open No. 10-2005-0080773 (hereinafter referred to as "Prior Art Document 1") discloses a high-intensity LED and a wireless light curing machine that emit ultraviolet rays and infrared rays. The prior art reference 1 discloses a lithium secondary battery in which a rechargeable Ni-Cd battery or Ni-MH battery Li-LON battery and a lithium polymer Li- The wireless polymerizer that operates by using the D / C bolts as a power source is equipped with a guide wheel and a light guide tip fixture which displays the remaining state of the rechargeable battery in the key pad portion of the main body by LED, The light guide insert control device that rotates can make the tip of the light guide tip of the thickness of 2mm ~ 10mm be replaced according to the size of the tooth and the procedure part so that the tooth from the premolar to the tooth of the molar can be inserted Can be optionally used; The user can adjust the wavelength range from 200 to 1000 nm in the light-curing unit and adjust the light intensity to 800 mw / cm2 by controlling the user in the keypad. It is easier, quicker and more efficient to change the energy than heat and noise. It does not affect sight and does not require replacement of the lamp. Replacement of aged rechargeable batteries after a certain use can provide a semi-permanent life span; In addition, it is possible to sterilize germ-filled oral cavity through disinfection of wounded area through LED that emits ultraviolet ray attached to ultraviolet ray attached with high brightness LED during patient treatment, to raise therapeutic effect and to purify and sterilize air in hospital. Since the wireless light curing machine of the prior art document 1 includes all the LED lamps, the PCB, and the battery in the main body, it is difficult to partially replace the lamp when the life of the lamp is shortened or the brightness is low, And if the LEDs are all installed in a limited area without increasing the cross-sectional area, there is a disadvantage in that the irradiation amount of the LED that generates each wavelength is lowered.

Korean Patent Laid-Open No. 10-2009-0101768 (published on September 29, 2009; hereinafter referred to as 'Prior Art Document 2') proposed a dental wired / wireless light curing machine. In the dental wired / wireless light curing machine of the preceding document 2, a light guide for irradiating light in one direction is provided at the tip end, an LED module for generating light irradiated by the light guide, and a PCB for controlling the LED module, And a power socket of the power unit is inserted into the lower end of the PCB so as to supply power to the PCB after receiving power from the power unit, A light generating unit having a first coupling unit formed on an outer surface thereof; And a power supply unit having a second coupling unit detachably coupled to the first coupling unit and a power terminal contacting the power socket when the second coupling unit is coupled to the first coupling unit. In this prior art document 2, since the LED module, as well as the PCB and the control means are integrated in the light generating part, the entire LED is left in the AS center when the LED is defective or damaged, and repair or replacement is required. .

Accordingly, a need has arisen for a new optical multiplexer having a structure in which a light emitting lamp can be easily replaced while providing a sufficient amount of light for each function without increasing the thickness of the light curing unit.

Therefore, in the photocomposite sterilizing polymerization reactor of the present invention,

The curing light irradiation part and the sterilizing light irradiation part can be separated from each other and can be easily attached to and detached from the main body so as to be replaceable so as to minimize the increase of the purchase cost and to maximize the light amount without increasing the volume, It is intended to provide a device.

In order to solve the above problems,

A dental light composite sterilization and polymerization reactor, comprising: a case having a receiving space formed therein and having a plurality of operation buttons formed on its outer surface; a power supply terminal mounted on a front end of the case, And a control chip mounted on the PCB and electrically connected to the power terminal and the operation button to intermittently supply power or to control various signals, A main body including a battery for supplying power to the control unit and a power connection terminal connected to the battery and exposed at a rear end; A head detachment protrusion protruding downward from a bottom surface of the head case to be fitted into the head detachment groove; and a head detachment protrusion protruding downward from a bottom surface of the head case, And an LED module mounted on the bottom surface of the head case and electrically connected to the power socket.

In addition, a wireless charging cap having a built-in wireless charging unit, one side of which is connected to the battery and the other of which is electrically connected to the wireless charger, may be detachably mounted on the rear end of the main body.

The light irradiation head includes a curing light irradiation head equipped with a curing LED module for emitting light having a wavelength of 420 to 480 nm and a sterilizing light irradiation head equipped with a sterilizing LED module emitting light with a wavelength of 230 to 270 nm They can be separately detachably configured.

In addition, a heat radiating plate is brought into contact with the rear surface of the LED module, and the heat radiating plate is extended to be in contact with the head detachment protrusion to transmit the heat of the LED module to the head detachment protrusion. So that the heat generated in the LED module can be transferred to the main body so as to be cooled.

Further, at the front end of the light irradiation head, a guide detachment protrusion that is inserted into the guide detachable groove may be formed at the rear end, and a light guide for refracting the light emitted from the LED module may be further mounted. The front end of the light guide is provided with a mounting portion that is fitted over the front end of the light guide, a tip portion of a transparent material protruding in a conical shape forward from the front end of the mounting portion, and a tip portion of another portion except the end portion of the tip portion, A guide tip composed of a reflective layer coated on the side of the light guide may be further mounted to concentrate and transmit the light received from the light guide.

The light irradiation head has a plurality of illumination holes formed on an outer surface thereof. The LED module is further provided with an LED chip for illumination at an edge corresponding to the illumination hole, so that light emitted from the LED chip passes through the illumination hole As shown in FIG.

In the photocomposite sterilizing polymerization reactor of the present invention by the above-

The light irradiation head on which the LED module is placed can be detachably mounted so that the light irradiation head can be easily replaced and used without having to purchase the hardening container and the sterilizing container. In particular, since only one light irradiation is performed for curing or sterilizing, rapid curing and sterilization are possible without reducing the amount of light.

In addition, since the heat generated by the LED module is transferred to the body to be cooled, it is possible to prevent a portion of the patient's mouth from being overheated, thereby eliminating the risk of burns.

In addition, since the guide tip coated with the reflective layer can be mounted, the generated light can be concentrated and supplied to a narrow space, so that the treatment in a narrow space can be performed quickly.

Further, it is possible to provide a device for easily identifying a patient by irradiating light in the oral cavity of a patient without a separate illumination by providing a plurality of lights at predetermined intervals along the outer side surface of the separated light irradiation head .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a photochemical sterilizing heavy neutralizer according to an embodiment of the present invention; FIG.
FIG. 2A is a sectional view showing a light irradiation head having a heating plate according to an embodiment of the present invention; FIG.
FIG. 2B is a cross-sectional view illustrating a head coupling portion having a heat generating fin according to an embodiment of the present invention. FIG.
3 is a sectional view showing a guide tip according to an embodiment of the present invention.
4A and 4B are a plan view and a sectional view showing a light irradiation head according to an embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the appended drawings illustrate only the contents and scope of technology of the present invention, and the technical scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the technical idea of the present invention based on these examples.

FIG. 1 is a perspective view illustrating a photochemical sterilizing heavy neutralizer according to an embodiment of the present invention. Referring to FIG.

As described above, the optical composite spermicide neutralizer 10 of the present invention comprises a main body 20 and a light irradiation head 30 detachably coupled to the front end of the main body.

The main body 20 includes a case 21 and a head coupling portion 22 embedded in the case, a control portion 23, a battery 24, and a power connection terminal 25.

The case 21 has a receiving space formed therein and a plurality of operation buttons formed on the outer surface thereof. The case may be formed as a cylindrical body so that the user can comfortably hold it, and a curved shape can be formed in the middle so that the non-slip part and the grip part can be clearly displayed.

The head engaging portion 22 is mounted on the front end of the case. The head coupling portion 22 is formed with a circular head attachment / detachment groove 221, and a power terminal 222 protruding in the axial direction is provided at the center of the head attachment / detachment groove. The power terminal 222 may be electrically connected to the battery 24 so that power may be supplied from the battery either directly or through a control unit or by intermittent operation of an operation button of the case. The power supply terminal 222 may be formed as two poles or four poles, and various signal transmission or power supply lines may be formed through different lines. A projection or groove is formed in the inner wall of the head attachment / detachment groove, and protrusions or protrusions formed in the head attachment / detachment groove 221 are formed on the head attachment / detachment protrusion 32 of the light irradiation head fitted in the head attachment / It is possible to form a groove or protrusion corresponding to the groove and to mount by engagement with a certain strength.

The controller 23 is provided inside the case and is provided with various chips mounted on the PCB. The control unit 23 is electrically connected to the power terminal 222, the battery 24, and the operation buttons to intermittently supply power or control various signals. The PCB includes a timer function so that power can be supplied for a certain period of time when the button is operated.

The battery 24 is installed near the lower end of the inside of the case 21 and may be provided in various sizes depending on the used capacity. Although the rechargeable battery is mainly described in the present invention, a form in which the rechargeable battery is replaced by a primary battery is also included in the present invention.

The power connection terminal 25 is a terminal that receives power from the outside and transmits the power to the battery. The terminal is exposed at the rear end of the case and may include a rectifier circuit, a transformer, and the like. The power connection terminal 25 may be provided with a detachment means and connected to a power supply jack, or a wireless charging cap 26 may be coupled to receive power from the outside. For example, as shown in the drawing, a wireless charging cap 26 having a wireless charging unit 261 having a wireless charging circuit is installed at the rear end of the main body case 21 to supply power from the wireless charging unit 60 , The power supply jack, which is a wired line, is coupled to the rear end of the main body case so that the battery can be charged through the power supply connection terminal. Accordingly, the rear end of the case may be formed with a female threaded portion on the inner surface so that the wireless charging cap or the power supply jack can easily be attached and detached, and a screwed portion may be formed on the wireless charging cap or the power supply jack.

On the other hand, the light irradiation head 30 is detachably mounted on the front end of the main body 20. The light irradiation head and the main body can be attached and detached by a screw coupling method. However, in order to allow quick attachment and detachment of the light irradiation head, protrusions and grooves are formed on the side of the coupling part between the light irradiation head and the main body, Can be achieved.

The light irradiation head 30 includes a head case 31, a head attach / detach projection 32, a power socket 33, and an LED module 34.

The head case (31) is disposed in contact with the front end of the main body and has a shape of a triangular pyramid. Also, a guide detachable groove 311 is formed in the axial direction from the upper end so that a light guide 40 to be described later is mounted on the upper end and an LED module 34 is disposed on the lower end.

The head attachment / detachment protrusion 32 protrudes downward from the bottom surface of the head case 31, and protrusions or grooves are formed on the protruded side walls as described above. The corresponding grooves or protrusions are formed in the head attachment / So that it can be engaged when engaged.

The power socket 33 is formed in the axial direction on the bottom surface of the head attachment / detachment protrusion 32 and electrically connects the power source terminal 222 of the main body to the inside thereof. Although the power socket 33 according to the present invention is formed as one unit, it may be formed as two units as needed, and the power terminals of the main unit may be correspondingly increased or decreased so that power may be supplied to each unit separately. It can be separated and configured to operate separately.

The LED module 34 refers to a module in which an LED chip is mounted on a PCB. In the present invention, an LED chip is disposed at the center, and a power supply is electrically connected to the power socket at the rear, Causing the chip to emit light. Here, the LED chip may be used for hardening or sterilizing by varying the wavelength of light emitted according to performance.

That is, the wavelength of the light emitted according to the LED chip of the LED module 34 may be changed. In the present invention, light is emitted at a wavelength of 420 to 480 nm for curing and at a wavelength of 230 to 270 nm So that the light can be emitted. More specifically, the curing LED chip is provided with a power of 1200 to 2000 mW / cm ² to provide a wavelength of 420 to 480 nm and an optical band width of 1 to 5 nm. If the wavelength range is out of the range, the curing time may be increased, and the curing time difference may be generated between the inside and the outside, so that uniform curing may not be performed and partial breakage may occur. In addition, the LED chip for sterilization is provided at a power of 1000 to 1600 mW / cm ² to provide a wavelength of 230 to 270 nm and a light band width of 1 to 5 nm. The sterilizing effect may be insufficient or skin damage may occur if the sterilizing wavelength range is out of the above range.

Accordingly, the LED module 34 can be mounted by forming a PCB having a size suitable for the inner wall of the light irradiation head, mounting the LED chip in the center of the PCB, covering the diffusion hole of the transparent material, have. The LED module 34 allows the LED chip portion having the diffuser to be exposed upward through the guide attaching / detaching groove 311 of the head case, thereby emitting light to the outside through the guide attaching / detaching groove.

In the LED module, one or more LED chips may be mounted. In order to increase the amount of light to be provided, a plurality of LED modules are mounted on one LED module to provide a desired amount of light. In order to provide a small amount of light, the LED chips that emit a small amount of light can be mixed and used with different wavelengths. However, since the amount of light is also important for dental treatment, It is desirable to provide an LED chip having the same lower wavelength in order to shorten it.

Therefore, in the optical composite sterilizer according to the present invention, the light irradiation head 30 uses only one LED module having a single wavelength to provide the maximum amount of light, thereby enabling rapid treatment, To minimize the cost of equipment purchase.

In addition, a heat sink 35 may be further installed on the rear surface of the LED module 34.

2A, a heat sink 35 is installed on the rear surface of the LED module 34, and a through hole is formed in the middle portion of the heat sink 35 to electrically connect the power socket 33 and the LED module 34 Or the power socket and the LED module can be electrically connected through various lines.

The heat dissipation plate 35 can quickly absorb heat generated from the LED chip of the LED module 34 to minimize heat loss of electric energy due to heat and maximize the contact area with the back surface of the LED module 34, So that the heat is transferred to the outer surface of the head attaching / detaching projection 32. [ That is, the outer surface of the head attaching / detaching protrusion 32 is made of a material having a high heat transfer rate, and heat generated from the LED module is adhered to the outer surface of the head attaching / detaching protrusion 32, which is in contact with the heat dissipating plate through the heat dissipating plate 35, To the side. At this time, the head attaching / detaching protrusion 32 may be provided with a heat insulating layer between the outer side surface and the inner power socket so that the heat is transferred to the power socket to prevent loss of electric energy. Also, the heat insulating layer may be formed on a portion of the head attachment / detachment projection that contacts the head case, thereby preventing the heat of the heat dissipating plate from being transmitted to the head case.

2B, a plurality of heat dissipation fins 223 are formed on the bottom surface of the head coupling portion 22 of the main body so that heat transferred from the head attachment / detachment protrusion 32 mounted on the head attachment / detachment groove 221 is discharged to the outside can do. The heat radiating fins 223 may be formed in the main body or may be provided with a heat radiating plate on the entire or a part of the outer surface of the main body case and transmit heat to the heat radiating plate on the outer surface of the case.

The heat dissipation plate 35 of FIGS. 2A and 2B improves the safety of preventing the soft skin in the oral cavity from being damaged by heat by allowing the heat generated in the vicinity of the oral cavity of the treatment subject to move backward and to be diverged .

The optical composite sterilizer 10 of the present invention further includes a light guide 40 detachably coupled to the front end of the light irradiation head in addition to the structure of the light irradiation head 30 attached to and detached from the main body.

The light guide 40 is mounted on the front guide guide groove 311 of the light irradiation head 30 and an optical fiber is installed therein so that the light irradiated by the LED module is introduced into the rear end of the light guide, Refraction is followed by investigation. That is, since the oral cavity of the subject to be treated is formed on the inner side of the mouth, it is refracted without the light loss by the light guide, and the examination is performed on the treated face. The light guide may be provided with a bent shape at various angles, if necessary, to enable selective mounting use.

Referring to FIG. 3, the guide tip 50 may be further mounted on the front end of the light guide of the present invention.

The guide tip 50 includes a mounting portion 51 to be fitted over the front end of the light guide 40, a transparent portion 52 of a transparent material protruding forwardly from the front end of the mounting portion, And a reflective layer 53 coated on the side of the mounting portion and the tips of the other portions.

The tip portion 52 is formed of a transparent material capable of passing light therethrough and is provided with a reflection layer 53 on the outer side of the tip end portion in order to prevent the light in the process of moving the tip portion 52 from being radiated to the outside, Is coated.

The reflection layer 53 is formed so that the reflective layer 53 is not coated on a part of the end portion of the tip end portion, or the reflection layer is coated only up to a half point from the tip end mounting portion to the end side, so that light irradiated from the light guide is concentrated through the tip end portion, . In particular, since the end portion of the uncoated tip portion is small in diameter, it is sandwiched between teeth so that it can be easily irradiated to a narrow area, and the sterilization time or the curing time can be shortened by high density to enable quick treatment.

4A and 4B, a light irradiation head 30 according to another embodiment of the present invention includes a plurality of illumination holes 36 formed on an outer surface thereof, So that the light emitted from the LED chip is irradiated to the outside through the illumination hole 36. [0051] As shown in FIG.

That is, one illumination hole may be formed on the outer surface of the light irradiation head 30, or a plurality of illumination holes may be formed at equal intervals, and the LED module may be disposed inside the rear end, And the LED chip for lighting can be mounted on the PCB portion so that the light emission can be performed.

At this time, the illumination LED chip may be provided with a separate button on the main body case, and if necessary, the illumination LED may be illuminated by a button click so that the inside of the mouth of the subject can be checked without any illumination.

In addition, a diffusion plate is additionally provided in the illumination hole 36 to seal the inside of the illumination hole 36, thereby preventing foreign matter from penetrating into the interior of the illumination hole 36. The diffusion plate may be formed in the form of a plate covering the upper end where the illumination holes are formed, or may be provided in various forms, such as covering the upper portion of the illumination hole and providing the diffusion plate in a convex shape.

In the optical composite sterilizer 10 configured as described above, first, the sterilizing light irradiation head is coupled to the head coupling part 22 of the main body, and then power is supplied to sterilize the treatment area with light having a wavelength of 230 to 270 nm .

In this case, when the treatment area is inside the oral cavity, illumination power is turned on and light irradiation through the illumination formed on the side of the light irradiation head enables confirmation of the inside of the oral cavity without additional illumination. In particular, since the illumination is arranged 360 degrees around the light irradiation head, the inside of the mouth can be easily confirmed.

Further, when the sterilization is completed, the required tooth part is filled or covered with the light-curable polymer, and the photo-compound sterilizing polymerization reactor removes the sterilizing light irradiation head and mounts the curing light irradiation head. At this time, the light guide 40 and the guide tip 50 may be further mounted on the curing light irradiation head 30 according to the position and size of the treatment site.

When the curing light irradiation head is disposed close to the light-curing type polymer and then power is supplied, the curing light irradiation head can irradiate light with a wavelength of 420 to 480 nm to promote curing of the light-curing type polymer.

In the optical composite sterilizer 10 of the present invention, a heating plate 35 is provided on the rear surface of the LED module 34 of the light irradiation head 30 and a plurality of heat generating fins are formed on the rear surface of the main body of the main body . This is because the heat generated by the LED module 34 is absorbed by the heating plate 35 and the heat absorbed by the heating plate is transmitted to the head coupling portion 22 of the main body through the head attachment / detachment projection 32 of the light irradiation head, It is possible to provide a useful device capable of preventing the heat from being radiated from the light irradiation head and preventing the soft skin of the treatment subject from being burned by the heat during the treatment process .

In addition, since the sterilizing light irradiation head and the curing light irradiation head can be easily attached and detached, it can be used through a single body without being separately provided. Thus, it is possible to reduce the cost of purchasing the equipment, It has become possible to provide a useful device capable of reducing costs.

10: Optical composite sterilization medium
20:
21: Case 22: Head coupling portion
23: control unit 24: battery
25: power connection terminal 26: wireless charging cap
221: head detachment groove 222: power terminal
223: radiating fin 261:
30: light irradiation head
31: head case 32: head detachment projection
33: Power socket 34: LED module
35: heat sink 36: lighting hole
311: guide detachable groove
40: light guide
41: Guide detachment protrusion
50: Guide Tips
51: mounting portion 52:
53: Reflective layer
60: Wireless charger

Claims (6)

In the dental light composite sterilization polymerization reactor,
And a power supply terminal 222 mounted on the front end of the case and protruding axially from the center of the head attachment / detachment groove 221, A control unit 23 mounted on the PCB and electrically connected to the power terminal and the operation button to control the supply of power or control various signals; A body (20) built in a rear end of the case and configured to supply power to a control unit, and a power connection terminal (25) connected to the battery and exposed at a rear end;
A head case 31 in which a guide detachment groove 311 is formed axially downward from the upper end in the shape of a triangular pyramid arranged in contact with the front end of the main body; a head case 31 protruding downward from the bottom surface of the head case, A power supply socket (33) formed on the bottom surface of the head detachment protrusion for inserting a power supply terminal (222) of the main body; an LED module mounted inside the head case and electrically connected to a power socket And a light irradiation head (30) including a light source (34)
The light irradiation head 30 includes a curing light irradiation head equipped with a curing LED module that emits light with a wavelength of 420 to 480 nm and a sterilizing light irradiation head equipped with a sterilizing LED module emitting light with a wavelength of 230 to 270 nm Respectively,
A heat sink 35 is brought into contact with the rear surface of the LED module 34 and a through hole is formed in the middle of the heat sink so that the power socket 33 and the LED module 34 are connected to each other through the through hole, And the head engaging portion 22 contacting the head attaching and detaching projection forms a plurality of heat dissipating fins 223 inside the main body to heat the heat generated in the LED module To the main body, cooling is performed,
Wherein the head attachment / detachment protrusion forms a heat insulating layer between the outer side surface and the inner power source socket and in contact with the head case to prevent heat generated in the LED module from being transmitted to the power socket and the head case. Aikis. The method according to claim 1,
And a wireless charging cap 26 having a wireless charging unit 261 with one side connected to the battery and the other side electrically connected to the wireless charging unit 60 is detachably mounted at a rear end of the main body 20 Which is a photocatalytic disinfection medium. delete delete The method according to claim 1,
The light irradiation head includes:
A plurality of illumination holes 36 are formed on the outer surface of the LED module and the LED module is mounted on the edge of the LED module corresponding to the illumination hole so that the light emitted from the LED chip is irradiated to the outside through the illumination hole Lt; RTI ID = 0.0 > sterilization < / RTI > The method according to claim 1,
At the front end of the light irradiation head 30, a guide attachment / detachment protrusion 41, which is inserted into the guide detachable groove, is formed at the rear end, and a light guide 40 for deflecting light irradiated from the LED module is further mounted,
At the front end of the light guide,
A tip portion of a transparent material protruding forwardly in a conical shape forward from the front end of the mounting portion and a tip portion of another portion except the end portion of the tip portion and a side surface of the mounting portion And a guide tip (50) composed of a reflective layer (53) coated on the optical guide is further mounted to concentrate and transmit the light received from the optical guide.

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