JP5487263B2 - Operating light source - Google Patents

Description

  The present invention relates to a light source part of an operating light (shadowless light), and more particularly, for example, used to properly irradiate a patient's oral cavity and the vicinity of the oral cavity and maintain a bright field simultaneously with irradiation of the entire clinic in dental practice. This relates to a light source part of an operating light (operating light).

  Conventional operating lights usually consist of a light source part and an arm part that supports the light source part. For the light source part, a small and bright halogen lamp is mainly used, and the direct light from the halogen lamp is in the eyes of the patient and the operator. In general, a light bulb cover (shielding cover) is provided on the front surface so that the light does not enter, and a light beam emitted rearward is reflected by a reflector (reflecting mirror).

  The reflector (cold mirror) reflects about 90% of visible light by combining a special radiation curved surface and a wavy curve for which light condensing and shadowless effects are calculated, and also approximates natural light and removes radiant heat. Therefore, a special coating that transmits or absorbs infrared rays is applied to the front or back surface of the reflector.

  The arm part that supports the light source part is composed of a horizontal arm, a balance arm (a spring-balanced vertically movable arm) and several joints, and the light source part can be moved to an appropriate position, and still firmly at that position. It is configured to be able to. In addition, the attachment part of a light source part is comprised so that the illumination direction can be changed with a swing metal fitting.

  Furthermore, unit mount type, ceiling (wall) hanging type, ceiling hanging running type, ceiling embedded type, self-standing type, floor moving type, etc. are widely used as operating lights in dental clinics.

  As an example of a publicly known document related to the main part relating to the operating light of the present invention, there can be mentioned a dental surgical light (Patent Document 1) previously developed and proposed by the present applicant.

  The dental surgical lamp of Patent Document 1 includes a concave reflecting mirror and a sleeve that is arranged on an extension line of the optical axis of the reflecting mirror and supports a halogen run that is a light source so as to be slidable only in the direction of the optical axis. And a sliding member, and the focal position of the reflecting mirror and the position of the halogen lamp can be adjusted.

  As described above, the light source part of the commonly used operating light is based on a combination of a halogen lamp and a cold mirror, and the cold mirror requires a reflection action by a combination of a special radiation curved surface and a wavy curve. In addition, a special coating film for transmitting infrared rays to the front surface or the back surface for removing radiant heat is required.

  In addition, when an arbitrary color temperature is used, it is necessary to form the coating film by a multilayer film, and there is a problem that the cost becomes high as a whole.

Japanese Utility Model Publication No.57-4922

The present invention has been developed to solve the above-described problems in the conventional light source unit. The light source unit is configured to use an LED instead of a halogen lamp. By arranging the slit and limiting the luminous flux of the LED light, it was found that an arbitrary irradiation pattern for the object can be obtained and that the light source part can be constituted by an inexpensive material, and the present invention has been conceived. is there.
That is, an object of the present invention is to provide a light source part of an operating light that uses an LED as a light source and can obtain an arbitrary irradiation pattern for an object based on an inexpensive configuration.

The light source part of the operating light of the present invention has a parabolic reflecting surface, a cold mirror provided with a mounting tube part at the center of the reflecting surface , an LED as a light source, and the LED. for, which has a LED mounting surface on one side, and the LED mounting member having a heat radiating portion on the other side, a slit plate which is tightly fixed to the LED mounting surface of the LED mounting member in a state of covering the LED, the LED A mounting cylinder part to which the mounting member is fixed, and the mounting cylinder part is detachably mounted on the mounting receiving cylinder part of the cold mirror, and LED light from the LED is arbitrarily shaped into the slit plate By irradiating and reflecting the reflective surface of the cold mirror through the slit, the object is illuminated with an irradiation pattern of an arbitrary shape corresponding to the arbitrary shape of the slit. The most important feature that.

  In the present invention and the embodiments described later, the cold mirror is defined to mean a reflector having a parabolic reflecting surface. Here, the parabolic shape is not limited to a parabolic surface, but is a state having a surface that makes light emitted from one point substantially parallel, such as a substantially parabolic surface, a substantially spherical surface (concave surface), and the like. For example, it is a concept including a curved surface considering a combination of a radiation curved surface and a wavy curve.

  According to the first aspect of the present invention, the LED module is used as the light source unit, and a slit plate having a slit having an arbitrary shape is arranged on the LED light emitting surface, and the reflection of the cold mirror is performed while limiting the luminous flux of the LED light. By irradiating and reflecting the surface, it is possible to provide a light source unit of an operating light that can illuminate an object with an irradiation pattern having an arbitrary shape corresponding to an arbitrary shape slit based on an inexpensive configuration.

  According to invention of Claim 2, while having a parabolic reflective surface, the cold mirror which provided the mounting | wearing receiving cylinder part in the center part of the said reflective surface, and having an LED attachment surface in one surface, and another surface A mounting base having a heat radiation part fixed to the side, an LED mounting member comprising at least a pair of mounting pieces projecting from the outer periphery of the mounting base to one side, and being closely fixed to the LED mounting surface; An LED module having an LED as a light source, a slit plate having an arbitrary shape for passing LED light, and being closely fixed to the LED mounting surface of the LED mounting member in a state of covering the LED module, and the LED mounting member A mounting cylinder part to which at least the protruding end sides of the pair of mounting pieces are fixed, and the mounting cylinder part is detachably attached to the mounting receiving cylinder part of the cold mirror, The LED module has an LED support unit that faces the reflecting surface of the LED module, and the reflective surface of the cold mirror is irradiated and reflected while restricting the luminous flux of the LED light by the slit of the slit plate. It is possible to provide a light source unit of an operating light that can illuminate an object with an irradiation pattern having an arbitrary shape corresponding to an arbitrary shape slit based on an inexpensive configuration.

  According to the invention described in claim 3, while having the same effect as that of the invention described in claim 2, the heat dissipated by the LED module is conducted to the heat dissipating part through the slit plate and the LED mounting member and dissipated. Therefore, it is possible to provide a light source part of an operating light that has good heat dissipation characteristics of heat dissipated from the LED module.

  According to the invention described in claim 4, since the same effect as that of the invention described in claim 3 is achieved and the LED light set to a desired color temperature is used, the reflective surface of the cold mirror is made inexpensive and simple. It is possible to provide a light source portion of an operating light that can be configured as a layer film and can be configured at a lower price.

  According to the invention described in claim 5, since the same effect as that of the invention described in claim 4 is achieved and the LED module is selected from a plurality of LED modules having different color rendering properties, the object is rendered as a color rendering property. It is possible to provide a light source unit of an operating light that can be illuminated so as to be in different states.

FIG. 1 is a schematic perspective view of a light source unit of an operating light according to an embodiment of the present invention. FIG. 2 is a schematic exploded perspective view of the light source unit of the operating light according to the present embodiment. 3 is a schematic exploded perspective view of the light source unit of the operating light according to the present embodiment as viewed from an angle different from that in FIG. FIG. 4 is a schematic exploded perspective view of a state in which a mirror mounting member is attached to the light source portion of the operating light according to the present embodiment. FIG. 5 is a schematic perspective view showing an LED module, an LED mounting member, and a heat radiating part in the light source part of the operating light according to the embodiment of the present invention. FIG. 6 is a schematic perspective view showing the LED support unit in the light source part of the operating light according to the embodiment of the present invention.

  An object of the present invention is to provide an operating light source unit that can obtain an arbitrary irradiation pattern for an object based on an inexpensive configuration using an LED as a light source and that also has good heat dissipation characteristics. A cold mirror having a planar reflecting surface, a mounting mirror provided in the center of the reflecting surface, an LED mounting surface on one surface, and a mounting base having a heat radiating portion fixed on the other surface side, and An LED mounting member comprising at least a pair of mounting pieces projecting from the outer peripheral portion of the mounting base to the one surface side and made of a material having high thermal conductivity, and an LED serving as a light source while being closely fixed to the LED mounting surface The LED module is mounted on the LED mounting surface of the LED mounting member so as to cover the LED module. A slit plate made of a material having a high thermal conductivity, a rectangular tube body to which at least the pair of mounting pieces on the LED mounting member are fixed, and a mounting tube portion in which a cylindrical body integral with the rectangular tube body is connected. The mounting cylindrical body portion is detachably mounted on the mounting receiving cylinder portion of the cold mirror so that the LED of the LED module faces the reflective surface based on a state where the LED occupies the focal position of the reflective surface. An LED support unit to be arranged, and the LED light from the LED is irradiated to the reflective surface of the cold mirror through the slit of the arbitrary shape of the slit plate, and reflected to the slit of the arbitrary shape A structure for illuminating an object with an irradiation pattern of any corresponding shape and dissipating heat dissipated by the LED module through the slit plate and the LED mounting member to the heat dissipating part. It was realized by.

  Hereinafter, the light source unit of the operating light according to the embodiment of the present invention will be described in detail.

  As shown in FIGS. 1 to 4, the light source unit 1 of the operating light according to the present embodiment has a reflective surface 2 a having a paraboloid shape (a combination of a radiation curved surface and a wavy curve) and the reflection surface. A cold mirror 2 provided with a mounting receiving cylinder 3 so as to penetrate the center (the deepest part) of the surface 2a rearward, and an LED (Light Emitting Diode) detachably mounted on the mounting receiving cylinder 3 of the cold mirror 2 ) Support unit 11.

  The reflective surface 2a of the cold mirror 2 is coated with a single layer film by metal deposition such as aluminum or silver.

  The LED support unit 11 has a flat LED mounting surface 15 on one surface and a disk-shaped mounting base 13 to which a heat radiating portion (heat radiating fin) 30 whose outer shape is substantially cylindrical is fixed to the other surface, and this An LED mounting member 12 comprising a pair of mounting pieces 14, 14 projecting upward from the outer peripheral portion of the mounting base portion 13, and having a high thermal conductivity, such as aluminum, copper, and the like, and a surface mount type LED ( For example, a white power LED for general illumination 18 is disposed on a substrate (base) 17 (package heat sink part), an LED module 16 that is closely fixed to the LED mounting surface 15, and an arbitrarily shaped slit for passing LED light. 20 and having a high thermal conductivity, such as aluminum, copper, etc., fixed to the LED mounting surface 15 of the LED mounting member 12 so as to cover the LED module 16. A rectangular tube body 23 and a projecting end side of the pair of mounting pieces 14, 14 in the LED mounting member 12 are fixed by screws and are detachably mounted on the mounting receiving cylinder portion 3 of the cold mirror 2. And a mounting cylinder portion 22 in which a cylindrical body 24 integrated with the rectangular cylinder 23 is provided.

Note that the mounting pieces 14 in the LED mounting member 12 are not limited to a pair (two pieces) structure, and three, four, six, etc., are further provided on the upper surface side from the outer peripheral portion of the mounting base 13. It is also possible to have a structure in which the mounting pieces 14 are protruded and fixed to the rectangular tube body 23 with screws.
Further, the outer shape and the inner shape of the mounting receiving cylinder portion 3 and the mounting cylindrical body portion 22 of the cold mirror 2 are not limited to the above-described cylinder, and may be a rectangular tube shape, In addition to the hollow shape, a cylindrical shape or a prismatic shape can be used, and various modifications can be made.

  As the LED module 16, an RGB type LED module, a Zenigata LED module (Sharp Corporation: GW6TGGCBG4FD), an LED module having different color rendering properties, or the like is used, although details will be described later.

  On the back side of the slit plate 19, as shown in FIG. 2, a concave portion 21 in which the LED module 16 can be accommodated is formed, for example, by spot facing. The slit plate 19 is made of, for example, aluminum or copper having a high thermal conductivity.

  Here, a specific structure of the LED support unit 11 and a structure for attaching the LED support unit 11 to the cold mirror 2 will be described.

  Two screw holes 13a and 13a for mounting the LED module 16 and two screw holes 13b for mounting the slit plate 19 are mounted on the mounting base 13 of the LED mounting member 12 to which the heat radiating unit 30 is fixed. , 13b.

  First, the LED module 16 is brought into close contact with the LED mounting surface 15, and the LED mounting is performed by using two screws 25 from the two concave portions 17a and 17a provided on the outer peripheral portion of the substrate 17 in a diagonal arrangement. The screws 25 are screwed into the corresponding two screw holes 13 a and 13 a of the surface 15, so that the LED module 16 is closely fixed to the LED mounting surface 15.

  Next, two screws 26 are inserted into two screw insertion holes 19a, 19a provided in a diagonal arrangement in the slit plate 19 so as to cover the LED module 16 with the slit plate 19, and the LED mounting surface 15 The two screws 26 are screwed into the two screw holes 13b, 13b for the slit plate 19 provided on the LED plate, and the slit plate 19 is fixed to the LED mounting surface 15.

  The other two holes 19b and 19b provided in the slit plate 19 are for releasing (accommodating) the screw heads of the screws 25 used when the LED module 16 is attached.

  Next, the pair of attachment pieces 14, 14 of the LED attachment member 12 are attached to the mounting cylinder portion 22.

  That is, two screws are inserted through the mounting holes 14a provided on the protruding end sides of the pair of mounting pieces 14, 14 of the LED mounting member 12,

Further, the LED mounting member 12 and the mounting cylinder part 22 are integrated by screwing two screws into screw holes opened on both sides of the rectangular cylinder 23 constituting the mounting cylinder part 22.
Then, the cylindrical body 24 of the mounting cylindrical body portion 22 is mounted on the mounting receiving cylindrical portion 3 of the cold mirror 2, and the mirror mounting member 31 shown in FIG. The LED support unit 11 and the cold mirror 2 are integrated with each other by tightening with a hollow set.

  The power supply system for the LED module 16 of the LED support unit 11 is configured such that the wiring material connected to the LED module 16 has a groove provided on the inner surface side of the mounting pieces 14, 14, and is exposed to the outside through the hole of the mounting cylinder portion 22. This is derived and connected to the power supply unit, but these are not shown.

  Next, the operation and effect of the light source unit 1 of the operating light according to the present embodiment having the above-described configuration will be described.

  According to the light source unit 1 of the operating light according to the present embodiment, the LED light from the LED 18 that has passed through the slit 20 of the slit plate 19 is reflected on the cold mirror 2 in a state where the luminous flux is restricted by the slit 20. 2a is irradiated and reflected to form an irradiation pattern having a shape corresponding to the shape of the slit 20 to illuminate an object (for example, a medical room in a dental practice, a patient's oral cavity, etc.).

  When a halogen lamp is used as in the conventional example, the light from the halogen lamp is condensed by the cold mirror, so most of the light flux becomes heat, and the cold mirror is a special multilayer film that releases heat from the back surface. However, in the case of this embodiment, the power consumption of the LED 18 in the LED module 16 is originally smaller than that of the halogen lamp, and the wavelength of the infrared component to be heated is small, so that the efficiency is high. Therefore, it is possible to collect the light and obtain a desired irradiation pattern.

  In this case, in order to be able to select a desired irradiation pattern at the time of factory shipment, the factory shipment specification (preliminarily requested by the user) can be selected from among the slit plates 19 having different shapes of the slits 20 or different hole sizes of the slits 20. To fit the specifications).

  Moreover, when exchanging by the user side, it replaces with the mounting cylinder part 22 of the state in which the LED module 16, the thermal radiation part 30, etc. were incorporated. At this time, the nut (not shown) sandwiching the cold mirror 2 is removed and replaced by tightening.

  According to the light source unit 1 of the operating light according to the present embodiment, the shape of the irradiation pattern can be changed by changing the shape of the slit 20 of the slit plate 19. For example, if the shape is wide, When performing dental treatment using an operating light, it is possible to perform treatment within the range of the irradiation field even when the patient's head (oral cavity) is moved left, right, up and down. Some doctors specialize in treatment while moving the patient's head.

  In addition, there are doctors who are good at treatment using dental mirror (dental term mirror technique) for dental treatment.

  In such a case, it is not necessary to make the irradiation pattern wide, and it is possible to prevent the operator from being dazzled by making the shape of the minimum irradiation pattern, and it is also possible to reduce the amount of heat given to the patient It becomes.

  Next, the heat radiation action of the light source unit 1 of the operating light according to the present embodiment will be described. Since the LED mounting member 12 and the slit plate 19 are each formed of aluminum, copper, or the like having high thermal conductivity, Since the back surface of the LED module 16 and the LED mounting surface 15 of the LED mounting member 12, and the back surface of the slit plate 19 and the LED mounting surface 15 are fixed in close contact with each other, the back surface of the LED module 16. Heat from the LED module 16 is transmitted to the heat radiating portion 30 and dissipated, and heat from the surface of the LED module 16 that does not pass through the slit 20 of the slit plate 19 is conducted by the slit plate 19. Then, the light is transmitted to the heat radiating portion 30 via the LED mounting surface 15 and diffused.

  Thereby, the heat radiation effect of the heat dissipated from the LED module 16 in the light source unit 1 can be enhanced without separately providing a cooling fan or the like, and also from this point, the light source unit 1 has an inexpensive structure. be able to.

  Next, a case where an RGB type LED module is used as the LED module 16 in the light source unit 1 of the operating light according to the present embodiment will be described.

  The RGB type LED module is also called a full-color LED module, and three LEDs emitting red, green and blue are sealed in one package. Can be displayed.

  For example, when two or more colors overlap, it becomes a different color, and when three bright red, green, and blue lights overlap, it becomes white, and when the three colors red, green, and blue are darkened by the same amount, The white turns into gray.

  Furthermore, as the LED module 16, for example, a Zenigata LED (Sharp Corporation: GW6TGCBG4FD) can be used.

  This is an LED module for lighting that is not an RGB type but has a toning function. Blue LED chips are mounted at a high density on a single ceramic substrate, and a warm-colored phosphor and a cold-colored phosphor Are arranged in a striped manner, and the light control function is realized by mixing two colors of light of warm color and cold color.

  Using such an LED module 16 that can change the color temperature, when the light source unit 1 is actually used, the color temperature of the LED module 16 is set appropriately (from a warm color system having a low color temperature to a cold color system having a high color temperature). The reflective surface 2a of the cold mirror 2 can have a single layer film structure that does not require expensive multilayer coating.

  In addition, when LED modules 16 having different color rendering properties are used as the LED module 16 in the light source unit 1 of the operating light according to the present embodiment, for example, Citizen Electronics, CL-L234A (color rendering property 85), L-233 (color rendering property 90). An example of using the LED module 16 selected from those of different grades such as).

  In this way, it is possible to change the color rendering property of the object by changing the grade of the LED module.

  Here, color rendering is a term that expresses the appearance of color when looking at an object compared to sunlight. For example, an illumination lamp that looks similar to sunlight can be described as “color rendering. It is called “a good (high) lamp”.

  The reflective surface 2a of the cold mirror 2 may have a structure in which a multilayer film (for example, 15 layers) is coated with a combination of substances having different refractive indexes, such as titanium and silica.

  In this case, visible light rays can be more efficiently reflected by the interference effect of the thin film constituting the multilayer film, and infrared rays called heat rays can be transmitted, whereby only light that does not have heat is transmitted. The object can be reflected by the reflecting surface 2a of the cold mirror 2 and irradiated onto the object, and the temperature rise of the object can be further suppressed.

  The light source part of the operating light according to the present invention can be applied not only as an illumination means in the field of dental care as described above, but also widely as an illumination light, an operation light, etc. in the general medical field.

DESCRIPTION OF SYMBOLS 1 Light source part 2 Cold mirror 2a Reflecting surface 3 Mounting receiving cylinder part 11 LED support unit 12 LED mounting member 13 Mounting base part 13a Screw hole 13b Screw hole 14 Mounting piece 14a Mounting hole 15 LED mounting surface 16 LED module 17 Board | substrate 17a Recessed part 18 LED
DESCRIPTION OF SYMBOLS 19 Slit plate 19a Screw insertion hole 19b Hole 20 Slit 21 Recess 22 Mounted cylinder part 23 Square cylinder body 24 Cylindrical body 25 Screw 26 Screw 30 Heat radiation part 31 Mirror mounting member

Claims (5)

A cold mirror having a parabolic reflecting surface and having a mounting tube portion at the center of the reflecting surface;
An LED as a light source;
In order to mount the LED, an LED mounting member having an LED mounting surface on one side and a heat radiating portion on the other side;
A slit plate that is closely fixed to the LED mounting surface of the LED mounting member in a state of covering the LED;
A mounting cylinder portion to which the LED mounting member is fixed;
Comprising
The mounting cylinder part is detachably mounted to the cold mirror mounting receptacle part,
The LED light from the LED is irradiated to the reflecting surface of the cold mirror through the slit of the arbitrary shape of the slit plate and reflected, thereby illuminating the object with the irradiation pattern of the arbitrary shape corresponding to the slit of the arbitrary shape A light source part of an operating light characterized by being configured to do so. A cold mirror having a parabolic reflecting surface and having a mounting tube portion at the center of the reflecting surface;
An LED mounting member having an LED mounting surface on one surface, an mounting base portion on which the heat radiation portion is fixed on the other surface side, and at least a pair of mounting pieces projecting from the outer peripheral portion of the mounting base portion to the one surface side; The LED mounting surface is closely fixed to the LED mounting surface, and includes an LED module mounted with an LED as a light source, and an arbitrarily shaped slit for passing the LED light, and close to the LED mounting surface of the LED mounting member in a state of covering the LED module. A slit plate to be fixed, and a mounting cylinder part to which at least a pair of mounting pieces of the LED mounting member are fixed, and the mounting cylinder part is attached to and detached from a mounting receiving cylinder part of the cold mirror An LED support unit that is mounted so that the LED of the LED module faces the reflecting surface; and
Have
The LED light from the LED is irradiated to the reflecting surface of the cold mirror through the slit of the arbitrary shape of the slit plate and reflected, thereby illuminating the object with the irradiation pattern of the arbitrary shape corresponding to the slit of the arbitrary shape A light source part of an operating light characterized by being configured to do so. A cold mirror having a parabolic reflecting surface and having a mounting tube portion at the center of the reflecting surface;
A material having high heat conductivity, comprising an LED mounting surface on one side, a mounting base having a heat radiation portion fixed on the other side, and at least a pair of mounting pieces projecting from the outer periphery of the mounting base to one side. An LED mounting member, an LED module mounted with an LED as a light source, and a slit having an arbitrary shape for LED light passage, and covering the LED module A slit plate made of a material having high thermal conductivity, which is closely fixed to the LED mounting surface of the mounting member, a rectangular tube body on which the protruding end sides of at least a pair of mounting pieces in the LED mounting member are fixed, and this rectangular tube body A mounting cylindrical body portion provided continuously with the cylindrical body, and the mounting cylindrical body portion is detachably mounted on a mounting receiving cylindrical portion of the cold mirror, and the LED module An LED support unit ED is a face disposed on the reflective surface under the state that occupies the focus position of the reflecting surface,
Have
The LED light from the LED is irradiated to the reflecting surface of the cold mirror through the slit of the arbitrary shape of the slit plate and reflected, thereby illuminating the object with the irradiation pattern of the arbitrary shape corresponding to the slit of the arbitrary shape In addition, the light source part of the operating light is configured such that the heat dissipated by the LED module is conducted to the heat radiating part through the slit plate and the LED mounting member and radiated. A cold mirror having a parabolic surface and a reflecting surface coated with a single-layer film structure, and having a mounting cylinder at the center of the reflecting surface;
A material having high heat conductivity, comprising an LED mounting surface on one side, a mounting base having a heat radiation portion fixed on the other side, and at least a pair of mounting pieces projecting from the outer periphery of the mounting base to one side. An LED module comprising: an LED mounting member; an LED module that is closely fixed to the LED mounting surface; and an LED module capable of changing a color temperature mounted with an LED as a light source; A slit plate made of a material with high thermal conductivity, which is closely fixed to the LED mounting surface of the LED mounting member in a state of covering the LED, and a rectangular tube body on which the protruding end sides of at least a pair of mounting pieces in the LED mounting member are fixed, and this A mounting cylinder part provided with a cylindrical body integrated with a rectangular cylinder, and the mounting cylinder part is detachably mounted on a mounting receiving cylinder part of the cold mirror; An LED support unit LED of D module and disposed opposite to the reflecting surface on the basis of the state that occupies the focus position of the reflecting surface,
Have
By irradiating the LED light from the LED through the slit of the arbitrary shape of the slit plate to the reflective surface of the cold mirror and reflecting it, the irradiation pattern of the arbitrary shape corresponding to the slit of the arbitrary shape, and the Irradiation of an arbitrary shape corresponding to the slit of the arbitrary shape is performed by irradiating the LED light set to a desired color temperature from the LED through the slit of the arbitrary shape of the slit plate to the reflective surface of the cold mirror and reflecting it. A light source part of an operating light characterized in that the object is illuminated with a pattern, and the heat dissipated by the LED module is conducted to the heat radiating part through the slit plate and the LED mounting member to be radiated. A cold mirror having a parabolic surface and a reflecting surface coated with a single-layer film structure, and having a mounting cylinder at the center of the reflecting surface;
A material having high heat conductivity, comprising an LED mounting surface on one side, a mounting base having a heat radiation portion fixed on the other side, and at least a pair of mounting pieces projecting from the outer periphery of the mounting base to one side. An LED mounting member, and a plurality of LED modules having different color rendering properties, an LED module that is closely fixed to the LED mounting surface, and an arbitrarily shaped slit for LED light passage, the LED A slit plate made of a material having high thermal conductivity, which is closely fixed to the LED mounting surface of the LED mounting member in a state of covering the module, a rectangular tube body on which the protruding end sides of at least a pair of mounting pieces in the LED mounting member are fixed, and And a mounting cylinder part in which a cylindrical body integrated with the rectangular cylinder is provided, and the mounting cylinder part is detachably mounted on the mounting receiving cylinder part of the cold mirror. And a LED support unit LED of the LED module and disposed opposite to the reflecting surface on the basis of the state that occupies the focus position of the reflecting surface,
Have
The LED light from the LED is irradiated on the reflecting surface of the cold mirror through the slit of the arbitrary shape of the slit plate and reflected, thereby rendering the object by the irradiation pattern of the arbitrary shape corresponding to the slit of the arbitrary shape. A light source for an operating light characterized in that it can be illuminated so as to be in different states, and the heat dissipated by the LED module is conducted to a heat radiating part through a slit plate and an LED mounting member and radiated. Department.

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