JP5483252B2 - Dental lighting device - Google Patents

Description

  The present invention relates to illumination of the oral cavity in dental practice, and more particularly to a dental illumination device using an LED module as a light source.

  2. Description of the Related Art Conventionally, a medical lighting device that uses an LED module as a light source has been disclosed in which a plurality of LEDs are arranged to provide a shadowless effect.

JP 2006-156074 A

However, in order for the patient's oral cavity to be seen by the patient himself during dental treatment, the optical path of the irradiation light from the illuminator and the optical path of the reflected light from the patient's oral cavity to the mirror are almost the same. In general, a mirror is disposed in the vicinity of the center of the front surface of the illuminator, but there is a problem in that the illumination light is blocked by the mirror and the illuminance is lowered.
In order to solve this problem, if it is a dental illuminator using an LED module as a light source, it is possible to arrange the LED module around the mirror so that the irradiation light is not blocked by the mirror,
In actual clinical practice, the distance between the illuminator and the patient's oral cavity may vary in a range nearly double (for example, 400 to 700 mm) depending on the case, medical procedure, or practitioner's preference. When the distance between the lighting device and the lighting device is equal to or less than a certain value, the LED module is not arranged in the center.
There was another problem that the irradiation light was concentrated in the peripheral area except the central part of the irradiation field, the irradiation light to the oral part in the central part of the irradiation field was reduced, and the illuminance of the oral part could not be kept constant. .
The present invention provides means for solving the above problems.

In view of the above, the present inventors have solved the problem by the following means as a result of intensive experimental research.
(1) An illuminator having a rectangular annular shape is provided, and the configuration of the illuminator includes a plurality of LED modules distributed on the surface thereof, and irradiation lights of the plurality of LED modules intersect at an irradiation surface. The LED module itself is composed of a convex lens for projection, a guide mask having a rectangular opening similar to the rectangular irradiation pattern to be projected, and an LED chip, and the irradiation pattern is rectangular. dental lighting apparatus, characterized in that as a.
(2) The structure of the illuminator is such that a plurality of LED modules are distributed on the outer periphery of the illuminator on the surface, and the plurality of LED modules are vertically symmetrical groups above and below. And left and right symmetrical groups, all LED modules in each group are arranged so that the irradiation light intersects at an equidistant position from the illuminator, and The single LED module is composed of a convex lens for projection, a guide mask having a rectangular opening similar to the rectangular irradiation pattern to be projected, and an LED chip, and the irradiation pattern is rectangular. distance from the bowl to the irradiation light intersect, vertically symmetrical groups of the upper and lower side, 700 mm, symmetrical groups of the left and right is a 400 mm, before Dental lighting apparatus characterized by including a different illuminators for each group.
(3) The illuminator has a light-emitting power source for the plurality of LED modules and a regulator for adjusting the light-emitting power source current so that the brightness of the plurality of LED modules can be independently adjusted. The dental illuminating device according to item (1) or (2), wherein
(4) The illuminator includes an LED module light-emitting power source and an automatic regulator for the light-emitting power supply current, and a distance measurement sensor provided in the illuminator, and the illumination measured by the distance measurement sensor Based on the value of the distance from the vessel to the patient's oral cavity, the automatic controller for the light-emitting power supply current is controlled to automatically adjust the brightness of the LED modules so that the illuminance at the oral cavity is always constant. The dental illuminating device according to any one of (1) to (3) above, wherein the dental illuminating device is adjustable.

(5) The illuminator mounted on the tip of the light arm of the dental chair unit, the actuator for driving the light arm, and a control device for the actuator, and based on a signal from the distance measuring sensor Any one of the preceding items (1) to (4), wherein the actuator is automatically controlled so that the distance between the illuminator and the oral cavity of the patient is always kept constant. A dental lighting device according to claim 1.
(6) Any one of the items (1) to (5) above, wherein a mirror or a half mirror, which is fixed or whose position and orientation can be changed, is disposed at the center of the illuminator. A dental lighting device according to claim 1.
(7) The monitor according to any one of (1) to (5) above, wherein a monitor that is fixed or whose position and orientation can be changed is disposed at a central portion of the illuminator. Dental lighting device.
(8) The magnifying glass which is fixed or whose position and orientation can be changed is disposed in the central portion of the illuminator, according to any one of the above items (1) to (5), Dental lighting equipment.
(9) The dental illuminator according to any one of (1) to (8), wherein the illuminator is provided with a camera that is fixed or whose position and orientation can be changed. .

According to the present invention, the following excellent effects can be exhibited.
1. According to the invention of claim 1,
Because the illuminator has a rectangular ring shape, it has an excellent design without feeling of pressure for the patient.
It is very hygienic and effective for cleaning.
In addition, a sufficient number of LED modules necessary for dental use can be arranged efficiently in a space-saving manner, and a mirror, a monitor, etc. can be arranged in the center of the illuminator without reducing the illuminance. it can. And since sufficient shadowless effect is acquired, the optimal illuminating device can be provided for dental treatment.
In addition, since the light from the LED chip is projected by the projection convex lens through the rectangular opening of the guide mask, the irradiation pattern is rectangular, so that a plurality of LED modules can be easily distributed.
2. According to the invention of claim 2,
The structure of the illuminator has a plurality of LED modules distributed on the outer periphery of the illuminator on the surface thereof, and the plurality of LED modules include upper and lower vertically symmetric groups, The left and right symmetrical groups are arranged , and all the LED modules in each group are arranged so that the irradiation light intersects at an equidistant position from the illuminator, and the LED modules The simple substance consists of a convex lens for projection, a guide mask having a rectangular opening similar to the rectangular irradiation pattern to be projected, and an LED chip, and the irradiation pattern is rectangular. distance to the irradiation light is crossing, vertical symmetry groups of the upper and lower side, 700 mm, symmetrical groups of the left and right is a 400 mm, the group Different for every flop,
Without lowering the illuminance, a mirror or monitor can be placed in the center of the illuminator.
In addition, when the distance between the patient's oral cavity and the illuminator is greatly changed (for example, 400 to 700 mm), a sufficient illuminance can be maintained at any distance without using a large number of LED modules. Therefore, it is possible to provide an optimal lighting device for dental practice.

3. According to the invention of claim 3,
Since it has a power supply for light emission of the plurality of LED modules and a regulator for adjusting the power supply current for the light emission, the brightness of the plurality of LED modules can be adjusted independently,
Illuminance optimal for medical treatment is always obtained in the oral cavity of the patient.
For example, it is possible to perform medical treatment with illuminance according to the case, such as increasing the illuminance in cases of molars that are relatively difficult to observe, and decreasing the illuminance in cases of anterior teeth that are relatively easy to observe. Adjustments such as increasing the illuminance when the distance between the oral cavity and the illuminator increases and the illuminance decreases, on the other hand, decreasing the illuminance when the distance decreases and the illuminance increases, minimize the uneven illuminance in the oral cavity It can be performed in a state where it is limited.

4. According to the invention of claim 4,
The LED module includes a power supply for light emission of the LED module and an automatic adjuster of the power supply current for light emission, and a distance measurement sensor provided in the illuminator, and the illuminator measured by the distance measurement sensor and the oral cavity of the patient Based on the value of the distance, controlling the automatic regulator of the power supply current for light emission, so that the brightness of the plurality of LEDs can be automatically adjusted so that the illuminance in the oral cavity is always constant,
Information on the distance between the illuminator and the patient's oral cavity, which is necessary to always obtain the optimal illuminance for medical care, can be obtained accurately, and the distance between the patient's oral cavity and the illuminator is large for the convenience of the practitioner. Therefore, when the illuminance decreases, the illuminance automatically increases, and when the distance decreases, the illuminance automatically decreases, so that the optimal illuminance for medical care can always be obtained without placing a burden on the practitioner.

5. According to the invention of claim 5,
The illuminator mounted on the tip of the light arm of the dental chair unit and a control device for the actuator for driving the light arm are provided, and the actuator is automatically activated based on a signal from the distance measuring sensor. Because the distance from the illuminator to the patient's oral cavity was always kept constant,
The optimal illuminance for medical treatment is always obtained without burdening the practitioner,
It can also be used as a safety device for preventing the patient from colliding with the illuminator for changing the medical posture.

6. According to the invention of claim 6,
In the center of the illuminator, a mirror or a half mirror that is fixed or changeable in position or orientation is disposed.
In the case of a mirror, the patient's oral cavity can be seen at various angles while maintaining the posture during medical treatment,
In the case of a half mirror, the patient's oral cavity can be seen at various angles while maintaining the posture during medical treatment, and the practitioner sees the patient's situation through the back of the half mirror. can do.
Further, since the mirror and the half mirror do not block the irradiation light of the LED module and reduce the illuminance, medical treatment can be performed with the optimum illuminance.
Furthermore, the position or orientation of the mirror or half mirror can be changed during treatment where the droplets are likely to fly, so that the surface is not contaminated with the droplets.

7. According to the invention of claim 7, since a fixed or changeable position and orientation of the monitor is disposed at the center of the illuminator,
The patient's intraoral camera image displayed on the monitor can be seen at various angles while maintaining the posture during medical treatment, which is useful for informed consent,
Since the monitor does not block the irradiation light of the LED module and reduce the illuminance, medical treatment can be performed with the optimum illuminance.
In addition, the monitor allows the patient to view images for relaxing the patient and images necessary for informed consent, etc. while maintaining the posture during the treatment, which is very effective for patient-oriented treatment. is there.
In addition, the position and orientation of the monitor can be changed during treatment where the droplets are likely to fly, so that the surface of the monitor is not contaminated with the droplets.

8. According to the invention of claim 8,
In the central part of the illuminator, a fixed or a magnifying glass whose position and orientation can be changed is arranged.
The practitioner can enlarge and observe the patient's oral cavity through the magnifying glass from the rear side of the illumination device, and can easily observe the oral cavity in detail without preparing a microscope or the like.

9. According to the invention of claim 9,
Since a camera that can be fixed or can be changed in position and orientation is disposed on the illuminator,
Without using an intraoral camera, the patient's oral cavity can be displayed on the monitor so that the patient can see the patient's oral cavity by himself / herself, and patient-oriented medical care can be performed hygienically and efficiently.
Furthermore, by projecting the image of the oral cavity of the patient acquired by the camera attached to the illuminator on the monitor that has been moved in a direction that is easy for the practitioner to see, or on another monitor that is placed at a position that is easy for the practitioner to see, Since the practitioner can observe the image of the oral cavity of the patient in a hands-free manner without using the intraoral camera, the medical treatment can be performed hygienically and efficiently.

The external appearance perspective view of the dental illuminating device of this invention with which the chair unit for dental treatment was equipped. The external appearance perspective view which shows the basics of the dental illuminator of this invention. The external appearance perspective view of the other dental illuminator of this invention. The external appearance perspective view of a LED module single-piece | unit. The exploded view of a single LED module. The schematic diagram which made the some LED module 1 group, and made irradiation light cross | intersect in the position whose distance from an illuminator is 700 mm. The LED module is divided into two groups, the outer and inner groups. The outer group intersects the irradiation light at a distance of 400 mm from the illuminator, and the inner group irradiates the irradiation light at a position of 700 mm from the illuminator. The schematic diagram which made it cross | intersect. FIG. 7 is an exploded view of FIG. 6 in which the inner group intersects with the irradiation light at a position where the distance from the illuminator is 700 mm. In the exploded view of FIG. 6, the outer group is a schematic diagram in which the irradiation light intersects at a position of 400 mm from the illuminator. The illuminance distribution figure in the distance of 400 mm when a plurality of LED modules are made into 1 group, and irradiation light cross | intersects at the position where the distance from an illuminator is 700 mm. FIG. 6 is an illuminance distribution diagram at a distance of 700 mm when a plurality of LED modules are grouped and irradiation light intersects at a position where the distance from the illuminator is 700 mm. A plurality of LED modules are divided into upper, lower, left and right groups, and the upper and lower groups are arranged such that the irradiation light intersects at a distance of 700 mm from the lighting device, and the left and right groups are at a distance of 400 mm from the illuminator. The illuminance distribution figure in the distance of 400 mm when setting so that irradiation light may cross | intersect. Divide a plurality of LED modules into upper and lower, left and right groups. The upper and lower groups are arranged such that the irradiation light intersects at a distance of 700 mm from the illuminator, and the left and right groups are at a distance of 400 mm from the illuminator. The illuminance distribution figure in the distance of 700 mm when setting so that irradiation light may cross | intersect. The external appearance perspective view of the dental illuminator provided with the distance measurement sensor. The external appearance perspective view of the dental illuminator provided with the mirror. The right side partial cross section figure which shows the time of mirror use in another Example. The partial right sectional view showing the time of non-use of the mirror in another embodiment. The external appearance perspective view of the dental illuminator provided with the monitor. The external appearance perspective view of the dental illuminator provided with the magnifier. The external perspective view of the dental illuminator provided with the camera and the monitor. The external appearance perspective view of the conventional dental illuminator.

The best mode for carrying out the invention will be described in sequence below.
FIG. 1 is an external perspective view of a dental lighting device of the present invention mounted on a dental care chair unit.
In the figure, 1 is a dental illumination device, 2 is a dental illuminator, 3 is a headrest, 4 is a backrest, 5 is a seat, 6 is a light pole, 7 is a light arm, 8 is a light bracket, and 26 is dental. A chair unit is shown.
The dental illuminator 2 is attached to the light bracket 8 at the tip of the light arm 7,
The patient (not shown) is in a supine or sitting posture on the chair, and the oral cavity (not shown) is at the headrest 3 position.
And illumination light is irradiated from the dental illuminator 2 with respect to the said patient's oral cavity.

FIG. 19 is an external perspective view of a conventional dental illuminator.
In the figure, 9b represents a conventional housing, 10 represents an LED module, and 11a represents a handle.
In the conventional dental illuminator, a plurality of LED modules 10 are disposed over the front surface of the conventional housing 9b on the side where the irradiation light is irradiated. For this reason, it was not possible to arrange a mirror, a monitor, or the like on the front surface of the lighting device without blocking the irradiation light.

FIG. 2 is an external perspective view showing the basics of the dental illuminator of the present invention.
In the figure, 9 indicates a housing.
The shape of the case 9 in this example is a rectangular ring, and as shown in the figure, 12 LED modules 10 are arranged in the rectangular ring 9 in the vertical direction, four each in the vertical direction and two in the left and right direction, and The central part is hollow.

However, the number of LED modules is not limited, and a plurality of LED modules are arranged on the outer periphery of the case even if the casing is annular, disc-shaped, square-plate shaped, or other shape, and a space ( It may not be hollow).
FIG. 3 is an external perspective view of another dental illuminator of the present invention.
In the figure, reference numeral 9a denotes a rectangular plate-like housing.
As shown in the figure, the case 9a in this example has a rectangular plate shape, and fourteen LED modules 10 are arranged on the front surface around the outer periphery, four on the top and three on the left and three on the left. The central portion of the rectangular plate has a space, and a monitor (16) described later is provided in this space.

Next, the detail of the said dental illuminator is demonstrated based on the figure of an example.
FIG. 4A is an external perspective view of a single LED module.
In the figure, reference numeral 20 denotes a projection convex lens.
FIG. 4b is an exploded view of a single LED module.
In the figure, 21 is a guide mask, 21a is a rectangular opening, and 22 is an LED chip.
The guide mask 21 has a rectangular opening 21a similar to the projected irradiation pattern, and the irradiation pattern is rectangular.

In this case, as shown in FIG. 2, the LED module 10 arranged on the outer periphery of the dental illuminator 2 is a plurality of twelve pieces, four vertically above and four vertically symmetric groups below, It is divided into two symmetrical groups, two on the left and two on the right.
The two LED modules are divided into two groups, and a plurality of modules in each group are arranged so that the irradiation light intersects at an equal distance from the dental illuminator 2.
Furthermore, the distance from the illuminator 2 until the irradiation light intersects is attached so as to be different for each group.
In this case, even when the distance between the patient's oral cavity and the illuminator is greatly changed, it can be applied within the following predetermined range.
The upper and lower groups are at a distance of 700 mm from the dental illuminator 2 and the irradiation light intersects, and the left and right groups are at an angle at which the irradiation light intersects at a distance of 400 mm from the dental illuminator 2. Installed.

Next, an example of setting the mounting angle of the LED module will be described.
See the schematic diagrams in FIGS.
As described above, the crossing surface of the irradiation light is an enlarged rectangle of one section of the light flux of the irradiation light,
And since the rectangle intersects at a predetermined distance with an inclination angle from the left and right, it becomes a complex shape intersection surface,
Since it is known that the calculation of the basic setting angle as follows and the measured value of the illuminance distribution without unevenness in the intersection resulting from the result are practically the same,
Hereinafter, description will be made with reference to the schematic diagrams of FIGS.

In order to calculate the mounting angle of the LED module, if the center point of the rectangular irradiation pattern is the center of intersection,
If the expression is changed, it can be expressed as an isosceles triangle figure.
That is, the base length BC of the isosceles triangle ABC is the length BC unique to the illuminator,
An LED module is attached to both ends at a base angle α, and a vertex A having a vertex angle β corresponds to an intersection.
When a perpendicular line is dropped from the apex A to the center point of the base BC from this shape, the length of the perpendicular line corresponds to the distance at which the irradiation light intersects from the illuminator.
The shape with the perpendicular drawn is a right triangle that is symmetrical with respect to the perpendicular.
Furthermore, the length of the lower side of the right triangle is constant and known since it is half the length of the base of the isosceles triangle, the length of the perpendicular is also known and one of the angles is Because it is a right angle,
From the three known values, the base angle α, that is, the LED module mounting angle, can be easily calculated by a trigonometric equation.
Further, in the above means, the difference between FIG. 7 and FIG. 8 is basically the same except that the converted base and perpendicular lengths are different.
In addition, in the dental illuminator of this example, since the size of the housing is limited, the length of the base, that is, the length of the housing is shorter than the perpendicular, that is, the distance at which the irradiation light intersects from the illuminator. Become a thing.

The above state will be sequentially described below.
FIG. 5 is a schematic diagram in which a plurality of LED modules are grouped and irradiation light intersects at a position where the distance from the dental illuminator 2 is 700 mm, and illustrates a conventional dental illuminator. is there.
In the figure, the number of LED modules is four in principle.
In the figure, 10a, 10b, 10c, and 10d denote LED modules.

FIG. 6 shows that the LED modules are divided into two groups, an outer side and an inner side. The outer group crosses the irradiation light at a distance of 400 mm from the dental illuminator 2, and the inner group is a dental illuminator. It is the schematic diagram which irradiated light crossed in the position where the distance from 2 is 700 mm, and explains the dental illuminating device of the present invention.
In the figure, reference numerals 10a and 10d denote an outer group, and reference numerals 10b and 10c denote inner group LEDs.

FIG. 7 is an exploded view of FIG. 6, in which the inner group is a schematic diagram in which the irradiation light intersects at a position where the distance from the dental lighting device is 700 mm,
Reference numerals 10b and 10c denote inner group LED modules.
FIG. 8 is a schematic diagram in which the outer group in the exploded view of FIG. 6 intersects the irradiation light at a position where the distance from the dental lighting device is 400 mm.
Reference numerals 10a and 10d denote LED modules of the outer group.

Next, an illuminance distribution diagram measured using an actual dental lighting device with the setting according to the schematic diagram is shown below.
FIG. 9 is an illuminance distribution diagram at a distance of 400 mm when a plurality of LED modules are made into one group and the irradiation light intersects at a position where the distance from the illuminator is 700 mm.
A conventional illuminator will be described.
The plurality of LED modules is 12 in one group.
In the figure, reference numerals 23, 24, and 25 denote iso-illuminance lines.
A wide line indicated by dots represents an isoilluminance line, and is equiilluminance on any line. Illuminance is brightest at 23 and gradually becomes darker in the order of 23-25.
As shown in the figure, at a distance of 400 mm, the isoilluminance line 23 is vertically divided by the isoilluminance line 24 at the center, and it can be seen that uneven illumination occurs.

Next, FIG. 10 is an illuminance distribution diagram at a distance of 700 mm when a plurality of LED modules are grouped and the irradiation light intersects at a distance of 700 mm from the dental illuminator. Similarly, a conventional illuminator will be described.
There are twelve LED modules.
As shown in the figure, the illuminance is brightest at the center and gradually darkens toward the outside, indicating that the illuminance is an ideal illuminance distribution.
Thus, in a conventional illuminator in which there is one group of LED modules and all irradiation light intersects at an equal distance from the illuminator, an ideal illuminance distribution is shown at the distance where the irradiation light intersects, but different distances. Then, it can be seen that problems such as uneven illumination occur.

In FIG. 11, a plurality of LED modules are divided into upper, lower, left and right groups.
The irradiation light intersects the upper and lower groups at a distance of 700 mm from the illuminator,
FIG. 4 is an illuminance distribution diagram at a distance of 400 mm when the left and right groups are set so that irradiation light intersects at a position where the distance from the illuminator is 400 mm, and illustrates the illuminator of the present invention.
The total number of LED modules is 12, two groups of eight on the top and four on the left and right.
As shown in the figure, the 23 illuminance lines 23, 24, and 25 are not divided, and the illuminance is brightest at the center and gradually darkens toward the outside. Unevenness has been eliminated.

Next, FIG. 12 divides a plurality of LED modules into upper, lower, left and right groups,
The irradiation light intersects the upper and lower groups at a distance of 700 mm from the illuminator,
FIG. 7 is an illuminance distribution diagram at a distance of 700 mm when the left and right groups are set so that irradiation light intersects at a position where the distance from the illuminator is 400 mm, and illustrates the dental illuminator of the present invention.
The total number of LED modules is 12, two groups of eight on the top and four on the left and right.
As shown in the drawing, the illuminance is brightest at the center and gradually darkens toward the outside, maintaining an ideal illuminance distribution.
Thus, in the illuminator of the present invention, it can be seen that the illuminance distribution suitable for medical care can always be maintained without a problem such as illuminance unevenness in a wide range from 400 to 700 mm from the illuminator.

FIG. 13 is an external perspective view of a dental illuminator provided with the distance measuring sensor of the present invention.
In the figure, reference numeral 17 denotes a distance measuring sensor.
The distance measurement sensor 17 is disposed at the lower center of the hollow portion (FIG. 2), and can measure the distance from the patient's oral cavity (see FIG. 1) linearly, for example, with infrared rays.
Based on this measured distance, the drive currents of the plurality of LED modules can be increased or decreased to automatically adjust the luminance of the plurality of LED modules.
Note that the distance measurement sensor 17 may be installed at another location of the dental illuminator, and the angle may be corrected for measurement.

Next, the dental illuminator of the present invention includes a power source for light emission of the plurality of LED modules and a regulator (not shown) for adjusting the power source current for light emission, and the brightness of the plurality of LED modules is adjusted. , Each can be adjusted independently.
For the adjustment by the adjuster, for example, a switching power supply control circuit incorporating a constant current power supply circuit for driving the LED module may be varied.
Then, when the brightness of the LED module is increased or decreased in conjunction with the automatic adjustment, that is, the distance measurement value of the distance measurement sensor, the increase or decrease of the distance measurement value is converted into the input value of the control circuit of the LED module. Then, the automatic adjuster may be controlled.

Further, the dental illuminator 2 of the present invention is attached to the tip of the light arm 7 of the dental chair unit 1 (FIG. 1), and includes a control device for a plurality of actuators for driving the light arm 7. (Not shown).
For the movement of the position of the dental illuminator 2, an actuator for driving the light arm is disposed at each joint portion of the light arm 7 (see FIG. 1) constituted by a plurality of joint portions. This can be done by changing the setting angle.
The value of this set angle is stored in advance in a computer as a relation value between the distance between the dental illumination device 2 and the oral cavity of the patient, the movement position of the dental illumination device 2, and the set angle of each actuator. Aside,
By controlling the set angle of the actuator based on the distance signal from the distance measuring sensor, the distance between the dental lighting device 2 and the patient's oral cavity is always kept constant. Can do.
The input of the initial value of the distance and the start and end of the control can be performed manually or automatically.
This function can also be used for a safety device for preventing the patient from colliding with the dental lighting device 2 for changing the medical posture.

Next, a case where a mirror or a half mirror that is fixed or whose position and orientation can be changed is arranged in the central part of the dental illuminator will be described.
FIG. 14 is an external perspective view of a dental illuminator provided with the mirror of the present invention.
In the figure, 12 indicates a mirror, 13 indicates a rotation axis, and 14 indicates a rotation direction.
The mirror 12 can be freely moved in the rotation direction 14 by the rotation shaft 13.

FIG. 15a is a partial cross-sectional view of the right side showing the use of the mirror in another embodiment of the present invention.
In the figure, reference numeral 15 denotes a mirror arm.
As shown, in use, the mirror 12 is parallel to the housing 9 so that the patient can view the mirror directly.
Since the practitioner adjusts the irradiation direction so that the irradiation light from the LED module 10 does not enter the eyes of the patient, the patient can see well without feeling dazzling.

FIG. 15B is a partial right side sectional view showing the mirror not used in another embodiment of the present invention.
When not in use, the mirror 12 can be tilted as shown.

When the half mirror 12a (not shown) is used instead of the mirror 12, the outer shape, the mounting position, the rotating action, and the like viewed from the front are the same, and the description thereof is omitted.
However, in the case of the half mirror 12a, the patient can see the oral image as a mirror,
In addition, the practitioner can observe the patient's situation through the back of the half mirror 12a.

FIG. 16 is an external perspective view of a dental illuminator provided with the monitor of the present invention.
In the figure, 16 indicates a monitor.
The monitor 16 is a thin liquid crystal panel or the like, and is disposed at the same position as the mirror 12 (FIG. 13). The monitor 16 displays an intraoral image taken by an observation camera (FIG. 17) and the like. indicate.

FIG. 17 is an external perspective view of a dental illuminator provided with a magnifying glass.
In the figure, reference numeral 18 denotes a magnifying glass.
The magnifying glass 18 is attached to the center of the dental lighting device 2, and the practitioner can observe the patient's oral cavity through the magnifying glass 18 from the back side of the dental lighting device 2.

FIG. 18 is an external perspective view of a dental lighting device provided with the camera and monitor of the present invention.
In the figure, reference numeral 19 denotes a camera.
The intraoral image captured by the camera 19 is displayed on the monitor 16.
The camera may be in the form of a free handpiece that is not fixed. In this case, not only the oral cavity but also other related parts and materials can be imaged and displayed.

DESCRIPTION OF SYMBOLS 1: Dental illuminating device 2: Dental illuminator 3: Headrest part 4: Backrest 5: Seat part 6: Light pole 7: Light arm 8: Light bracket 9: Case 9a of this invention: Square plate-shaped case Body 9b: Conventional housing 10: LED modules 10a, 10b, 10c, 10d: LED module 11: Cover 11a: Handle 12: Mirror 12a: Half mirror 13: Rotating shaft 14: Rotating direction 15: Mirror arm 16: Monitor 17: Distance measurement sensor 18: Magnifier 19: Camera 20: Projection convex lens 21: Guide mask 21a: Rectangular opening 22: LED chips 23, 24, 25: Iso-illuminance line 26: Dental chair unit

Claims (9)

The illumination device has a rectangular annular shape, and the configuration of the illumination device is such that a plurality of LED modules are distributed on the surface of the illumination device, and the irradiation lights of the plurality of LED modules intersect at the irradiation surface. The single LED module is composed of a convex lens for projection, a guide mask having a rectangular opening similar to the projected rectangular irradiation pattern, and an LED chip, and the irradiation pattern is rectangular. dental lighting device, characterized in that it.
The structure of the illuminator has a plurality of LED modules distributed on the outer periphery of the illuminator on the surface thereof, and the plurality of LED modules include upper and lower vertically symmetric groups, The left and right symmetrical groups are arranged , and all the LED modules in each group are arranged so that the irradiation light intersects at an equidistant position from the illuminator, and the LED modules The simple substance consists of a convex lens for projection, a guide mask having a rectangular opening similar to the rectangular irradiation pattern to be projected, and an LED chip, and the irradiation pattern is rectangular. distance to the irradiation light is crossing, vertical symmetry groups of the upper and lower side, 700 mm, symmetrical groups of the left and right is a 400 mm, the group Dental lighting apparatus characterized by including a different illuminators for each flop.
  The illuminator has a light-emitting power source for the plurality of LED modules and a regulator for adjusting the light-emitting power source current, and the brightness of the plurality of LED modules can be independently adjusted. The dental lighting device according to claim 1 or 2, characterized in that The illuminator includes an LED module light emitting power source and an automatic regulator of the light emitting power supply current, and a distance measuring sensor provided in the illuminator, and the illuminator and patient measured by the distance measuring sensor Based on the value of the distance to the oral cavity of the control of the automatic regulator of the light-emitting power supply current,
The dental illumination according to any one of claims 1 to 3, wherein brightness of the plurality of LED modules can be automatically adjusted so that illuminance in the oral cavity is always constant. apparatus. The illuminator attached to the tip of the light arm of the dental chair unit;
An actuator for driving the light arm, and a control device for the actuator;
Based on the signal from the distance measuring sensor, the actuator is automatically controlled,
The dental illuminator according to any one of claims 1 to 4, wherein a distance between the illuminator and a patient's oral cavity is always kept constant.   The dental illumination according to any one of claims 1 to 5, wherein a mirror or a half mirror, which is fixed or whose position and orientation can be changed, is disposed at a central portion of the illuminator. apparatus.   The dental illumination device according to any one of claims 1 to 5, wherein a monitor that is fixed or whose position and orientation can be changed is disposed at a central portion of the illuminator.   The dental illuminator according to any one of claims 1 to 5, wherein a magnifying glass which is fixed or whose position and orientation can be changed is disposed at a central portion of the illuminator.   The dental illuminator according to any one of claims 1 to 8, wherein the illuminator is provided with a camera that is fixed or changeable in position and orientation.

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