JP3230508U - Medical headlamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical headlamp which can be widely used in any medical field by making it possible to select an appropriate irradiation range and using projected light having high color rendering property. .. SOLUTION: A medical headlamp 1 has a fitting 2 attached to a user's head or the front surface of a face, and an LED attached to the fitting 2 to project light toward the front of the user's field of view. A light emitting unit 15 is provided, and a variable focus type lens is attached to the light emitting unit 15 in front of the LED. The average color rendering index Ra of the light from the LED is 85 or more. [Selection diagram] Fig. 1

Description

The present invention relates to a medical headlamp that can be worn on the head or the front of the face of a medical practitioner to irradiate light in the direction of the medical practitioner's line of sight.

In clinics, hospitals, etc., when a medical practitioner performs medical treatment or treatment of a patient, the medical practitioner often obtains a medical device or a testing device. For this purpose, by attaching the light source to the head of the medical practitioner and irradiating the light from the light source in the same direction as the line of sight of the medical practitioner, it is sufficient in the medical treatment target part or the treatment target part of the patient. A medical head lamp that can ensure a high illuminance is used.
This type of medical headlamp is configured so that the light source can be supported on the head of a medical practitioner by using a wearing device such as a headband, which is disclosed in Patent Documents 1 and 2 and the like. ing.

The medical headlamp disclosed in Patent Document 1 uses an organic EL light emitter as a light source, and intends to utilize the excellent color rendering properties of the organic EL light emitter. According to this, it is expected that the characteristics of the surface-emitting light source will be utilized to illuminate a wide range without casting a shadow on the nearest medical treatment target area.

Further, in the medical headlamp disclosed in Patent Document 2, since the lighting units are arranged on the left and right sides of the headband and the like, shadows are less likely to be formed, and each lighting unit has a fixed condensing lens. Be prepared. According to this, it is described that an appropriate lighting area can be formed at a position separated from the lighting unit by a certain distance (for example, 30 cm). It is considered that this can be expected to have an excellent effect in medical treatments that require local spot light, such as dentistry and otolaryngology.

Registered Utility Model No. 3219633 Registered Utility Model No. 3022512

By the way, according to the medical headlamps disclosed in Patent Documents 1 and 2, they have a predetermined light irradiation range according to each purpose, and these uniformly irradiate a relatively wide area. It can be suitably used in medical fields such as dermatology, which needs to be performed, and the above-mentioned dentistry and otolaryngology, which require local spot light.
In other words, the medical headlamps disclosed in Patent Documents 1 and 2 are unreasonable to be widely used in all medical fields.

This idea was made by paying attention to the above points, and by making it possible to select an appropriate irradiation range and using projected light having high color rendering properties, it can be used in any medical field. The purpose is to provide a medical headlamp that can be widely used.

The medical headlamp according to the present invention, which has been made to solve the above-mentioned problems, is used by being attached to a wearer attached to the head or the front surface of the face of a user (medical worker) and the wearer. A light emitting unit including an LED that projects light toward the front of the person's field of view is provided, and the light emitting unit is equipped with a variable focus type lens in front of the LED and has an average color rendering of light from the LED. The evaluation number Ra is 85 or more.

In this case, in one preferred embodiment, the wearer is fitted with a plurality of light emitting units, at least one light emitting unit is fitted with the varifocal lens, and at least one other light emitting unit. Is equipped with a fixed focus lens in front of the LED.
In another preferred embodiment, the light emitting unit is attached to the central portion of the wearer so as to be located at the central portion of both eyes of the user.
Further, in another preferred embodiment, the light emitting unit is attached to the left and right of the wearer so as to be located outside both eyes of the user, and the variable focus type is attached to either the left or right light emitting unit. Lens is attached.

On the other hand, two light emitting units are attached to the left and right sides of the fitting so that the light emitting units are located outside both eyes of the user, and are attached to either one of the left light emitting units and one of the right light emitting units. Can also adopt a configuration in which the variable focus type lens is mounted.
In this case, a fixed focus type lens is mounted in front of the LED in each of the other light emitting units on the left and right sides, except for the light emitting unit to which the variable focus type lens is mounted.

Then, as the variable focus type lens, a solid lens that moves in the optical axis direction manually or electrically, or a liquid lens whose refractive index changes depending on the applied voltage can be used.
Further, it is desirable that the wearing tool is equipped with a face shield made of a transparent plate located along the front surface of the user's face.

According to the above-mentioned medical headlamp according to the present invention, light emission using an LED as a light source that projects light toward the front of the user's field of view on a fitting worn on the head or the like of the user (medical worker) The unit is installed.
Since the light emitting unit is equipped with a variable focus type lens, it is possible to appropriately select the optimum irradiation range required in each medical field.

Further, by using an LED having an average color rendering index Ra of 85 or more, it is possible to accurately inspect the condition of the affected part of the patient by the projected light which is almost natural light.
Further, by attaching the light emitting unit to the wearer so as to be located at the center of both eyes of the user, or by attaching the light emitting unit to the wearer so as to be located outside both eyes of the user. By attaching it, it becomes possible to irradiate the examination site without creating a shadow, and it becomes possible to provide a medical headlamp that can contribute to a more accurate examination.

It is a perspective view which showed the 1st Example of the medical headlamp which concerns on this invention. It is also a perspective view which showed the 2nd Example. It is also a perspective view which showed the 3rd Example. It is a perspective view which showed the example of a light emitting unit and a unit support. It is a perspective view which showed the other example of a light emitting unit and a unit support. It is sectional drawing which showed the example of the light emitting unit provided with the variable focus type lens. It is sectional drawing which showed the example of the light emitting unit provided with the fixed light distribution type optical element. It is a schematic diagram which showed the basic principle of a liquid lens by the sectional view.

The medical headlamp of the present invention will be described based on the embodiment shown in the figure.
1 and 2 both show a medical headlamp provided with a face shield, and FIG. 1 shows an example in which a glasses-type frame is used as a fitting for a face shield and a light emitting unit. 2 shows an example in which the headband is used as a wearer for a face shield and a light emitting unit.

First, the medical headlamp 1 of the first embodiment shown in FIG. 1 includes a glasses-type frame 2. The glasses-type frame 2 is entirely molded of a resin material, and is composed of a main frame 2a located on the front surface of the face and extending in the left-right direction, and a pair of ear hook frames 2b and 2c.
A pair of nose pads 2d and 2e are integrally molded with the main frame 2a in the central portion of the main frame 2a. Further, one end portions of the pair of ear hook frames 2b and 2c are attached to the left and right sides of the main frame 2a, and the other end portions are formed so as to be slightly curved inward.

From the main frame 2a described above, the upper end portion of the face shield 7 made of transparent resin curved in a U shape is attached along the left and right ear hook frames 2b and 2c. Thereby, the side surface from the front surface of the user's face can be covered with the face shield 7 at a predetermined interval.
Then, in the first embodiment shown in FIG. 1, the unit support 11 is attached to the outside of the front end portion of the left ear hook frame 2b, and is formed in a columnar shape via the unit support 11. The light emitting unit 15 is attached. As a result, the light from the light emitting unit 15 is projected toward the front of the user's field of view.

On the other hand, in the medical headlamp 1 of the second embodiment shown in FIG. 2, a headband 4 worn on the user's head is used as a mounting tool for the light emitting unit, and the headband 4 is used. It has a side band 4a molded from an elastic cloth or resin material and an overhead band 4b.

Further, at the intersection position of the side band 4a and the overhead band 4b, each end portion of the curved member 5 formed of a slightly rigid material located along the front surface of the user's head is attached. Then, the upper end portion of the face shield 7 made of transparent resin is attached along the curved member 5, whereby the front surface to the side surface of the user's face can be covered by the face shield 7 at a predetermined interval.

In the medical headlamp 1 of the second embodiment shown in FIG. 2, unit supports 11 are attached to the outside of both ends of the U-shaped curved member 5, respectively, and the unit supports 11 are attached to the outside. The light emitting unit 15 formed in a columnar shape is attached so as to be located on the outside of both eyes of the user. Therefore, since the light from the left and right light emitting units 15 can be projected toward the front of the user's field of view, it is possible to irradiate the examination site without creating a shadow.

Further, in the medical headlamp 1 of the third embodiment shown in FIG. 3, a headband 4 worn on the user's head is used as a mounting tool for the light emitting unit, as in the second embodiment. There is. At the intersection of the side band 4a and the overhead band 4b, a bending member 5 formed of a slightly rigid material located along the front surface of the user's head is provided, and the U-shaped bending member 5 is provided. A unit support 13 is attached to the central portion of 5. That is, the light emitting unit 15 is attached to the central portion of the wearing tool so as to be located at the central portion of both eyes of the user.

The unit support 13 includes a fixing portion 13A fixed to the curved member 5, a holding portion 13B for holding the light emitting unit 15, and an angle adjusting portion 13C for adjusting the angle of the holding portion 13 with respect to the fixing portion 13A. ing.
Therefore, since the light can be projected from the light emitting unit 15 which is arranged vertically toward the front of the user's field of view and whose angle can be adjusted, it is possible to irradiate the examination site without creating a shadow. Become.

In the medical headlamp 1 of the first to third embodiments described above, a battery storage case (not shown) to be attached to, for example, a chest pocket or a waist belt of a user is prepared, and a power source is supplied from the battery storage case. The light emitting current is supplied to the light emitting unit 15 via the supply line 15a.

4 and 5 show a unit support provided in the medical headlamp 1 and a light emitting unit supported by the unit support.
First, FIG. 4 shows the external configuration of the unit support 11 used in the medical headlamp 1 shown in FIGS. 1 and 2 and the light emitting unit 15. The unit support 11 is configured by integrally molding a holder 11a and a fastening plate 11b formed in a cylindrical shape, and the fastening plate 11b is formed with two screw mounting holes 11c.

The unit support 11 described above can be attached to the outside of the ear hook frame 2b as shown in FIG. 1 by using the screw mounting holes 11c. Similarly, by using the screw mounting holes 11c, the unit supports 11 can be attached to both outer sides of the curved member 5 as shown in FIG.
The unit support 11 can be formed of an aluminum material or a resin material, and by inserting the light emitting unit 15 formed into a columnar shape into the cylindrical holder 11a, FIGS. 1 and 2 show. The medical headlamp 1 shown is formed.

On the other hand, FIG. 5 shows the appearance configuration of the unit support tool 12 for two lights capable of supporting the two light emitting units up and down and the light emitting unit 15.
The unit support 12 for two lights is configured such that holders 12a formed in a cylindrical shape are arranged vertically in parallel, and a fastening plate 12b connecting the two is integrally formed on the side surface of each holder 12a. ing. Two screw mounting holes 11c are formed in the central portion of the fastening plate 11b.

The unit support 12 shown in this example can also be formed of an aluminum material or a resin material, and by inserting a cylindrically formed light emitting unit 15 into each of the cylindrical holders 12a, a light emitting unit can be formed. Each of the 15 can be mounted vertically in parallel.
The unit support 12 for two lights can be attached in place of the unit support 11 for one light shown in FIGS. 1 and 2. Therefore, by attaching the unit support 12 to the left and right, it is possible to provide the medical headlamp 1 provided with the four light emitting units 15.

Further, the unit support 13 of the third embodiment is formed of an aluminum material or a resin material as in the first embodiment. The fixing portion 13A of the unit support 13 is a fastening plate having a screw mounting hole as in the first embodiment, and the holding portion 13B of the unit support 13 is a holder formed in a cylindrical shape.
Then, by inserting the light emitting units 15 formed in a columnar shape into the holding portion 13B, the light emitting units 15 can be attached vertically in parallel. Moreover, the light emitting units 15 mounted in parallel to each other in the vertical direction are configured so that the irradiation angle can be changed by the angle adjusting unit 13C.

Similarly, the light emitting unit 15 constituting the fixed focus type unit 15B shown in FIG. 7, together with the light emitting unit 15 constituting the variable focus type unit 15A shown in FIG. 6, is a left and right light emitting unit as shown in FIG. 2, for example. It is desirable to use it in the medical headlamp 1 provided with the 15 and in the medical headlamp 1 provided with the light emitting units 15 at the top and bottom as shown in FIG.

FIG. 6 shows an example of a light emitting unit provided with a varifocal lens that can be used as one of the light emitting units 15 in the medical headlamp of the present invention.
In the variable focus type unit 15A shown in FIG. 6, the second cylinder body 15c is attached to the first cylinder body 15b constituting the unit case so as to be able to move forward and backward. That is, a male screw 15d is provided on the front end of the first cylinder 15b, a female screw 15e is formed on the rear end side opening of the second cylinder 15c, and the male screw 15d of the first cylinder 15b has a second cylinder. The female screw 15e of the body 15c is screwed.
An LED (15f) is housed in the inner bottom of the first cylinder 15b as a light source, and a convex lens 15g made of plastic, for example, is attached to the front end opening of the second cylinder 15c.

According to the variable focus type unit 15A shown in FIG. 6, by rotating the second cylinder 15c with respect to the first cylinder 15b, the convex lens 15g mounted on the second cylinder 15c is advanced (in FIG. 6). It can be retracted (in the direction of arrow F as described) or retracted (in the direction of arrow B as described in FIG. 6).
As a result, by changing the distance between the LED (15f) and the convex lens 15g, the degree of focus of the spot light projected from the LED (15f) via the convex lens 15g can be changed (the irradiation range is changed). it can.

This is the degree of focus of the spot light from the variable focus type unit 15A by rotating the front end portion of the light emitting unit 15 with a fingertip while the medical headlamp 1 shown in FIG. 1 is attached to the user. It becomes possible to select the optimum irradiation range required in each medical field each time.
In the example shown in FIG. 6, an example in which one convex lens 15 g is used as a varifocal lens is shown, but in this case, a plurality of lenses are used as necessary to reduce the distance between the lenses. It can be configured so that the degree of orientation of the spot light can be adjusted to a more optimum state by, for example, manually changing it.

Further, as the LED (15f) as the light emitting body used in the light emitting unit 15, it is desirable to use an LED having an average color rendering index Ra of 85 or more. This makes it possible to accurately inspect the condition of the affected area of the patient with projected light that is close to natural light.
In the example shown in FIG. 6, the degree of focus of the light from the LED (15f) can be manually changed, but this is to accommodate an electric actuator such as a micromotor in the unit, and this electric motor. A configuration in which the position of the solid-state lens is controlled by an actuator can also be adopted.

FIG. 7 shows an example with a fixed focus lens that can be used as another of the light emitting units 15. The fixed focus type unit 15B shown in FIG. 7 is attached so that the second tubular body 15c does not advance or retreat with respect to the first tubular body 15b constituting the unit case.
As a result, since the distance between the LED (15f) and the convex lens 15g does not change, the degree of focus of the spot light projected from the LED (15f) via the convex lens 15g cannot be changed (the irradiation range is changed). (Cannot), a certain area is irradiated.
In addition, also in the fixed focus type unit 15B shown in FIG. 7, an LED having an average color rendering index Ra of 85 or more is used, and the state of the affected part in a wide range of the patient can be accurately measured by the projected light close to natural light. It will be possible to have a medical examination.

According to the medical headlamp 1, the light emitting unit 15 located on the outside or the center of both eyes of the user makes it possible to irradiate the examination site without forming a shadow.
Of these, the light emitting unit 15 that constitutes the variable focus type unit 15A can adjust the degree of focus (irradiation range) of the spot light to the optimum state, so that more accurate examination can be performed even for a local examination site. It is possible to provide a medical headlamp that can contribute to the above.

In the medical headlamp 1 shown in FIGS. 1 and 2, instead of the unit support 11 for one light, the unit support 12 for two lights described with reference to FIG. 5 can be attached.
According to this, two light emitting units 15 can be provided on each of the left and right sides, and one of the left light emitting units and one of the right light emitting units can be provided with the above-mentioned varifocal lens. By mounting the focus type unit 15A, it is possible to provide a medical headlamp capable of expanding the range of light distribution choices without causing shadows.

FIG. 8 is a schematic view showing a cross-sectional view of the basic principle of a liquid lens that can be suitably used in place of the variable focus type unit 15A shown in FIG.
In this liquid lens 21, the lower electrode 21b is formed on the transparent substrate 21a, and the medium constituting the liquid lens layer 21d is sealed between the lower electrode 21b and the sealing layer 21c.
The upper electrode 21e is formed so as to cover the sealing layer 21c, and the variable voltage source V is connected between the lower electrode 21b and the upper electrode 21e.

In this method, variable focus is realized by applying a voltage V between the lower electrode 21b and the upper electrode 21e to control the curvature of the liquid lens layer 21d.
That is, when a voltage V is applied between the lower electrode 21b and the upper electrode 21e, an attractive force is generated between the lower electrode 21b and the upper electrode 21e. At this time, a small attractive force is generated in the central portion of the liquid lens layer 21d because the distance between the electrodes is large, while a large attractive force is generated in the peripheral portion of the liquid lens layer 21d because the distance between the electrodes is small.

On the other hand, since the volume of the liquid lens layer 21d is constant, the medium of the liquid lens layer 21d moves from the peripheral portion to the central portion, and the focal length of the liquid lens layer 21d becomes smaller. As a result, the focal length or irradiation range characteristic of the liquid lens layer 21d changes depending on the voltage V applied between the lower electrode 21b and the upper electrode 21e.

By using the liquid lens 21 described above, the forward / backward mechanism of the second tubular body 15c including the fixed lens (plastic lens) 15 g shown in FIG. 6 becomes unnecessary.
In this case, by arranging a slide volume or the like for controlling the voltage V applied between the lower electrode 21b and the upper electrode 21e in the unit case of the light emitting unit 15 or on the battery accommodating case side described above, The irradiation range can be arbitrarily selected.

1 Medical headlamp 2 Glasses type frame (lamp fixture)
4 Headband (lamp fixture)
5 Curved member 7 Face shield 11 Unit support (for one light)
12 Unit support (for two lights)
13 Unit support 13A Fixed part of unit support 13B Holding part of unit support 13C Angle adjustment part of unit support 15 Light emitting unit 15A Variable focus type unit 15B Fixed light distribution type unit 15a Power supply line 15f LED
15g Convex Lens 15h Concave Lens 21 Liquid Lens 21d Liquid Lens Layer V Variable Voltage Source

Claims (8)

Wearing equipment to be worn on the user's head or front of the face,
It is equipped with a light emitting unit that is attached to the fitting and contains an LED that projects light toward the front of the user's field of view.
A medical headlamp characterized in that a variable focus type lens is mounted in front of the LED and the average color rendering index Ra of the light from the LED is 85 or more in the light emitting unit. A plurality of light emitting units are attached to the mounting tool, the variable focus type lens is mounted on at least one light emitting unit, and at least one other light emitting unit has a fixed focus type in front of the LED. The medical headlamp according to claim 1, wherein a lens is provided. The medical headlamp according to claim 1 or 2, wherein the light emitting unit is attached to the central portion of the fitting so as to be located at the central portion of both eyes of the user. A plurality of the light emitting units are provided, and the light emitting units are attached to the left and right sides of the wearing device so that the light emitting units are located outside both eyes of the user, and either the left or right light emitting unit is attached to the variable focus type lens. The medical headlamp according to claim 1 or 2, wherein the headlamp is attached. Two light emitting units are attached to the left and right sides of the fitting so that the light emitting units are located outside both eyes of the user, and one of the left light emitting units and one of the right light emitting units are attached. The medical headlamp according to claim 1 or 2, wherein each of the variable focus type lenses is attached. The fifth aspect of claim 5, wherein the other one light emitting unit on the left and right sides, excluding the light emitting unit to which the variable focus type lens is attached, is equipped with a fixed focus type lens in front of the LED. Described medical headlamp. Any of claims 1 to 6, wherein the varifocal lens includes a solid lens that moves in the optical axis direction manually or electrically, or a liquid lens whose refractive index changes depending on an applied voltage. The medical head lamp according to item 1. The medical headlamp according to any one of claims 1 to 7, wherein a face shield made of a transparent plate located along the front surface of the user's face is attached to the fitting.

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