JP2018158041A - Medical headlight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical headlight which can suppress accumulation of eye fatigue of an operator compared with a conventional one, without generating an effect on a medical activity such as a surgery.SOLUTION: A medical headlight comprises: a head band; a body part on which an LED element is mounted; a control part for performing power supply control to the LED element; a storage part for storing first information related to a supply current amount to the LED element at an initial time point, and second information related to a relationship between a lapse time from the initial time point and the supply current amount to the LED element; and a time measurement part for measuring the lapse time from the initial time point. The second information describes a relationship in which with time lapse, the supply current amount to the LED element is gradually reduced, in a range in which an operator cannot visually recognize change in illumination intensity. The control part determines the supply current amount to the LED element on the basis of the second information according to the lapse time from the initial time point, and supplies the determined amount of the current to the LED element.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a medical headlight, and more particularly to a medical headlight used when a medical worker performs a medical action such as surgery.

  In general, a surgical light is installed in the operating room as a device for illuminating the surgical field. In addition, when detailed work is required, it is common to use a medical headlight that is attached to the head of an operator (operator or doctor) and partially illuminates the surgical field (for example, , See Patent Document 1).

JP 9-51900 A

  Conventional medical lighting devices are set to have an illuminance (for example, 10,000 to 100,000 lx) that is much higher than general illumination (for example, about 2000 lx) in order to improve discrimination of blood vessels and organs. For example, JISZ9110 stipulates that the illuminance suitable for reading in the study is 750 lx and the illuminance suitable for ultra-precise visual work is 2000 lx.

  An operator such as a doctor gazes at the operative field (target area) where such extremely high illuminance is realized for a long time. In the first place, medical practice such as surgery is an action related to the life of the patient, and the operator is forced to work in high tension. Furthermore, since the area being watched is illuminated with extremely high illuminance, the operator often suffers from fatigue in the eyes and shoulders after the work is completed. However, from the viewpoint of touching a patient's blood vessels and organs, safety should be assured as much as possible. However, there is a situation where it is not allowed to reduce illuminance more than necessary.

  The present invention has been made in view of the above problems, and an object thereof is to provide a medical headlight that can suppress the accumulation of eye strain of an operator more than before without causing an influence on medical practice such as surgery. And

The medical headlight according to the present invention is
A headband having a curved shape configured to be mounted on the operator's head;
In a state of being located outside the headband, it is connected to a fixing portion provided in at least two places of the headband, and a main body portion on which the LED element is mounted,
A control unit that performs power supply control on the LED element;
First information on the amount of current supplied to the LED element at the initial time point when the LED element starts automatic control light emission, and second information on the relationship between the elapsed time from the initial time point and the amount of current supplied to the LED element A storage unit storing information;
A time measuring unit that measures an elapsed time from the initial time point.

  The second information describes a relationship in which the amount of current supplied to the LED element gradually decreases with the passage of time within a range in which the operator cannot visually recognize a change in illuminance.

The controller is
When an instruction signal to start the automatic control light emission is input, the supply current amount to the LED element is determined based on the first information stored in the storage unit, and the determined amount Supplying current to the LED element;
In accordance with the elapsed time from the initial time point input from the time measurement unit, the supply current amount to the LED element is determined based on the second information stored in the storage unit, and the determined An amount of current is supplied to the LED element.

  The medical headlight according to the present invention has an automatic control light emission function in which the light emission intensity is automatically decreased with the passage of time from the start of light emission. By executing this control, the illuminance of the illumination area is gradually reduced. This aspect of decreasing illuminance is set within a range where the operator himself cannot visually recognize the decrease in illuminance. This prevents the operator from recognizing that the illuminance in the illumination area such as the operative field has decreased, so that safety equivalent to that in the past can be ensured when performing medical procedures such as surgery. On the other hand, since the illuminance in the illumination area actually decreases, the degree of eye strain on the operator is alleviated.

  As will be described later in the “Detailed Description of the Invention” section, it has been found that when the illuminance is reduced according to a predetermined rule, the illuminance can be reduced without causing the subject to recognize the change in illuminance. For this reason, information related to the speed at which the illuminance gradually decreases within a range that cannot be seen by the human eye, that is, second information is stored in the storage unit in advance, and the control unit automatically operates based on the second information. Further, by controlling the amount of current supplied to the LED element, the illuminance in the illumination area can be automatically reduced.

In the medical headlight,
The light irradiation unit includes a plurality of first LED elements each having a first color temperature and a plurality of second LED elements each having a second color temperature different from the first color temperature.
In the first information, the amount of current supplied to each of the first LED element and the second LED element is described,
The second information describes the relationship between the elapsed time from the initial time point and the amount of current supplied to each of the first LED element and the second LED element, or the elapsed time from the initial time point and The relationship with the relative value with respect to the supply current amount at the initial time may be described.

  When performing an operation on a patient, the operator gazes at a portion showing a unique color for each region, such as a blood vessel or an organ. At this time, in order to correctly recognize the site, it is necessary to irradiate light having a color temperature corresponding to the color of the site. According to the above configuration, the illuminance can be gradually reduced over time so that the operator cannot recognize the light with a color temperature that is easily visible for each part. Thereby, it becomes possible to reduce an operator's fatigue degree, without obstructing at the time of performing medical treatments, such as a surgery.

  In the above configuration, the control unit supplies the first LED element and the second LED element to the first LED element and the second LED element as time elapses, while maintaining a constant ratio of the amount of current supplied to the first LED element and the second LED element. Control for decreasing the supply current amount may be performed.

In the medical headlight,
The storage unit stores the first information and the second information for each attribute of the operator,
When the information related to the attribute of the operator is input, the control unit reads the first information and the second information corresponding to the attribute of the operator from the storage unit, and stores the information in the read information. Based on this, it is possible to determine the amount of current supplied to the LED element.

  There may be individual differences regarding the ease of visual recognition in the initial stage and the degree of decrease in illuminance that cannot be visually recognized. Reasons for differences among individuals include factors such as age and sex. In said structure, in view of this point, regarding the first information and the second information, a plurality of types are prepared in advance for each attribute such as age and sex, and stored in the storage unit. And a control part reads the 1st information and the 2nd information according to the attribute (age, sex, etc.) of the operator who wears a medical headlight, and performs energization control to an LED element. Accordingly, a medical headlight that can reduce the degree of fatigue in consideration of characteristics between individuals is realized.

  Here, the information regarding the attribute of the operator may be configured to be input by a predetermined method before use. For example, an operation unit may be provided, and the operator may select and input a corresponding attribute from a plurality of attributes from the operation unit. The first information and the second information may be stored in the storage unit for each individual operator. In this case, as information regarding the attribute of the operator, a code (for example, an ID number) for identifying the individual operator can be used.

The medical headlight includes a control information input unit configured to be input by the operator,
When the control information is provided with instruction information related to increase or decrease in illuminance from the control information input unit, the control unit supplies the amount of current supplied to the LED element determined based on the first information and the second information. Thus, an amount of current increased or decreased by a predetermined value may be supplied to the LED element.

  An operator may desire to increase or decrease the illuminance of the illumination area intentionally during a medical practice. According to said structure, it can respond to such an operator's request | requirement.

  Even in this configuration, the illuminance may be automatically decreased based on the second information after the illuminance of the illumination area is intentionally changed. Further, a mode in which the illuminance is automatically decreased and a mode in which the illuminance is kept constant may be selected by the operator.

The medical headlight includes a voice recognition unit that outputs an instruction signal corresponding to the voice signal to the control unit when receiving a predetermined voice signal;
When an instruction signal related to an increase or decrease in illuminance is given from the voice recognition unit, the control unit is configured to supply current to the LED element determined based on the first information and the second information. The LED element may be supplied with an amount of current increased or decreased by a predetermined value.

  During a medical practice such as surgery, it is assumed that the operator has a medical instrument in both hands, or both hands are contaminated with blood or the like. With the above configuration, the illuminance of the illumination area can be adjusted by simply saying a keyword that the operator increases or decreases the illuminance.

  When the control signal is given from the voice recognition unit to start light emission, the control unit determines the amount of current supplied to the LED element based on the first information stored in the storage unit. The light emission may be started by supplying the determined amount of current to the LED element.

  According to the medical headlight of the present invention, it is possible to suppress the accumulation of eye strain of the operator more than before without causing an influence on medical practice such as surgery.

It is a perspective view showing typically one embodiment of a medical headlight. FIG. 2 is a partially enlarged view of FIG. 1. It is drawing which shows typically the use condition of a medical headlight. It is drawing which shows typically the control content of a medical headlight. 3 is a graph of changes in illuminance over time in Test 1. It is a graph of the illumination intensity change with time in Test 2. FIG.

  An embodiment of a medical headlight according to the present invention will be described with reference to the drawings. The following drawings merely show an embodiment of a medical headlight, and are not intended to limit the present invention to the illustrated structure. Moreover, in each figure, the dimension ratio of drawing and an actual dimension ratio do not necessarily correspond.

[Construction]
FIG. 1 is a perspective view schematically showing one embodiment of a medical headlight. FIG. 2 is a perspective view schematically showing an enlarged part of FIG. The medical headlight 1 includes a headband 3, a main body 5, and a control box 10. A plurality of LED elements 7 are mounted on the main body 5. In addition, as shown in FIG. 2, the fin 9 for cooling is provided in the back side of the side in which the LED element 7 is arrange | positioned in the main-body part 5. As shown in FIG.

  In the present embodiment, the main body 5 is mounted with a plurality of LED elements 7 a having a light bulb color (first color temperature) and a plurality of LED elements 7 b having a white color (second color temperature). By adjusting the ratio of the amount of current supplied to the bulb-colored LED element 7a and the amount of current supplied to the white LED element 7b, the color temperature of the emitted color can be adjusted. Yes. In FIG. 1, the bulb-colored LED element 7 a is hatched.

  The headband 3 has a curved shape so that it can be worn on the operator's head. FIG. 3 is a drawing schematically showing a state where the operator 40 actually wears the medical headlight 1 and performs a medical action on the patient 43 placed on the placement table 41.

  In the present embodiment, the main body portion 5 is fixedly connected to the headband 3 by fixing portions 4 provided at two places. The main body portion 5 is located outside the headband 3 under the state where the main body portion 5 is connected by the fixing portion 4. Further, the main body 5 is provided with an angle adjusting knob 8. By loosening the knob 8, the main body 5 can be rotated in the vertical direction around the head of the operator 40. Thereby, the direction of the light beam 50 (see FIG. 3) emitted from the LED element 7 can be adjusted.

  The control box 10 is connected to the main body 5 via a cable 23. The control box 10 includes a control unit, which will be described later, and an amount of current determined by the control unit is supplied to the main body unit 5 through the cable 23. By controlling the amount of current sent from the control box 10, the light emission control of the LED element 7 is performed. The detailed configuration of the control box 10 and the description of the control contents will be described later.

  The main body 5 includes a face guard 21. There is a risk that blood or other body fluids may scatter from the patient 43 during the medical practice. The face guard 21 is provided for the purpose of preventing the body fluid from adhering to the face of the operator 40.

  The main body 5 includes a microphone 22. When the operator 40 inputs a predetermined voice through the microphone 22, control based on the voice signal is executed in the control box 10. This control content will be described later.

  The medical headlight 1 includes a battery box 25. A battery (not shown) is built in the battery box 25. The battery box 25 is provided with a charging connector 26. By connecting a cable (not shown) through the connector 26, the built-in battery can be charged from a commercial power source, for example. A battery built in the battery box 25 is electrically connected to the control box 10 via a battery cable 27. Electric components such as a control unit provided in the control box 10 and the LED elements 7 mounted on the main body unit 5 are supplied with electric power from a battery built in the battery box 25. However, the medical headlight 1 does not exclude a configuration in which power is directly supplied to each component from a commercial power supply by connecting a cable to the connector 26.

  The battery box 25 includes a remaining amount display unit 28 for displaying the remaining battery level, and a remaining amount warning speaker 29 for outputting an audio signal to that effect when the battery level falls below a predetermined remaining level. Yes. For example, the remaining amount display unit 28 includes light emitting portions of three colors of red, yellow, and green. When the remaining amount of the battery is 50% or more, the remaining amount display unit 28 emits green light, and when the remaining amount is 20% or more and less than 50%. Is configured to emit yellow light, and to emit red light when less than 20%. The remaining amount display unit 28 may be configured to include a monitor and display the remaining amount of the battery as a% value.

  The control box 10 is provided with a main power supply 31, a voice recognition on / off switch 32, a dimming knob 33, a voice recognition indicator 35, and a voice recognition answerback speaker 36 on the outer surface of the casing.

  For example, when the main power supply 31 is operated by the operator 40, energization is started to a control unit (described later) in the control box 10. As a result, the medical headlight 1 becomes operable. The voice recognition on / off switch 32 is a switch for selecting whether or not to perform control based on a voice signal input from the operator 40 via the microphone 22. The voice recognition indicator 35 recognizes a voice signal input from the operator 40 via the microphone 22 and outputs an instruction signal corresponding to the voice signal to the control unit. The voice recognition answerback speaker 36 is a speaker that outputs a voice signal corresponding to a warning to that effect when a voice signal input from the operator 40 via the microphone 22 cannot be correctly recognized. Even when the voice recognition indicator 35 correctly recognizes the voice signal input from the operator 40, the voice recognition answer back speaker 36 may output a voice signal to that effect.

  In the present embodiment, the dimming knob 33 includes a knob 33a for dimming the bulb-colored LED element 7a and a knob 33b for dimming the white LED element 7b. By operating the knob 33a, the light amount of the light bulb color in the light included in the light beam 50 is increased or decreased, and by operating the knob 33b, the white light amount of the light included in the light beam 50 is increased or decreased. The That is, the color temperature of the light irradiated to the illumination area | region 51 (refer FIG. 3) can be adjusted by operating the knob 33a and the knob 33b separately.

  In the present embodiment, the dimming knob 33 corresponds to a “control information input unit”, and the voice recognition indicator 35 corresponds to a “voice recognition unit”.

[control]
FIG. 4 is a block diagram schematically showing the control contents of the medical headlight 1. As shown in FIG. 4, the control box 10 includes a control unit 11, a storage unit 15, and a timer 16. As described above with reference to FIGS. 1 to 3, the main power supply 31, the voice recognition on / off switch 32, the dimming knob 33, and the voice recognition indicator 35 are provided on the outer surface of the housing of the control box 10. Is provided.

  The control unit 11 includes a current amount determination unit 12 and a power feeding unit 13. The current amount determination unit 12 determines the amount of current to be supplied to the LED elements 7 (7a, 7b) based on processing to be described later. The power supply unit 13 receives information on the current amount determined by the current amount determination unit 12 and actually outputs the current of the current amount to the cable 23. The current amount determination unit 12 is configured by, for example, a CPU or a microcomputer, and the power supply unit 13 is configured by, for example, a driver. Although not shown in FIG. 4, the power feeding unit 13 is electrically connected to a battery built in the battery box 25, and power is supplied from the battery.

  The timer 16 has a function of measuring time. In the present embodiment, the elapsed time from the time when the main power supply 31 is turned on (hereinafter referred to as “initial time”) is measured.

  The storage unit 15 is composed of, for example, a hard disk, ROM, RAM, or the like, and stores predetermined information (first information 61, second information 62) in advance.

  The first information 61 is information related to the amount of current supplied to the LED element 7 at the initial time point. As the first information 61, a value that can realize an illuminance that can sufficiently illuminate the illumination area 51 (for example, the surgical field of the patient 43) when the operator 40 performs a medical action such as an operation on the patient 43 is described. Has been.

  When the operator 40 performs a medical practice, the distance between his / her head and the surgical field of the patient 43 is approximately within a certain range. That is, when the operator 4 uses the medical headlight 1 with the headband 3 attached to his / her head, the distance between the LED element 7 mounted on the main body 5 and the illumination area 51 is almost equal. Within a certain range. For example, this distance is in the range of 400 mm to 800 mm. That is, as the first information 61, when the LED element 7 is caused to emit light with the amount of current described in the first information 61, the illumination area 51 positioned forward by a distance within the range is suitable for medical practice. The value that can be illuminated with illuminance is described.

  In the present embodiment, the LED element 7 includes a light bulb color LED element 7a and a white LED element 7b. For this reason, the first information 61 includes information related to the amount of current for the bulb-colored LED element 7a and information related to the amount of current for the white LED element 7b.

  The second information 62 is information relating to the relationship between the elapsed time from the initial time point and the amount of current supplied to the LED element 7. More specifically, the second information 62 describes a relationship in which the amount of current supplied to the LED element 7 decreases with time. The above relationship is a relationship that indicates a change amount to the extent that the operator 40 cannot visually recognize a change in illuminance in the illumination region 51 even if the amount of current supplied to the LED element 7 is changed. The second information 62 will be described in detail below.

(test)
Each of seven men in their 20s to 50s was tested individually. Specifically, while allowing each subject to visually recognize a predetermined illumination area, the illuminance on the illumination area was changed over time under a predetermined rule. And when the subject recognized the change of illumination intensity for the first time, he / she answered that.

  In each test, three patterns with a change rate of illuminance of 1% / min, 2% / min, and 5% / min were prepared. When the illuminance was changed at 5% / min, the highest rate of change, 120 minutes, which was the time until the illuminance reached a predetermined target illuminance value, was set as the test time. As the target illuminance value, two patterns of 80% of the initial illuminance (Test 1) and 60% of the initial illuminance (Test 2) were set. That is, each of Test 1 and Test 2 was performed under three different patterns of changes in illuminance. That is, the test was performed 6 times for each subject.

  FIG. 5A is a graph of illuminance change over time in Test 1. FIG. FIG. 5B is a graph of changes in illuminance with time in Test 2. FIG. In any graph, the horizontal axis represents the elapsed time from the start of the test, and the vertical axis represents the ratio of the illuminance to the initial illuminance.

  The results of Test 1 are shown in Table 1, and the results of Test 2 are shown in Table 2.

  According to Test 1, when the light intensity decreased from the initial illuminance to 80%, all subjects could not recognize the illuminance change if the light attenuation rate was 5% / min or less. According to Test 2, when the initial illuminance is reduced to 60%, when the dimming rate is 1% / min and 2% / min, all subjects cannot recognize the illuminance change and dimmed. Even when the rate was 5% / min, only one subject recognized the change in illuminance.

  According to the above test, by setting the target illuminance value and the degree of dimming in advance in the second information 62, it is possible to set the illuminance change in the illumination area 51 so that the operator 40 cannot visually recognize the change in illuminance. I understand that there is. In the second information 62, the target illuminance value is not necessarily described, and the target processing time for performing the dimming process may be described. Furthermore, when the target processing time is longer than the time of the medical practice assumed to be performed by the operator 40, the target processing time may not be described in the second information 62.

  As the second information 62, the relationship between the elapsed time and the illuminance ratio from the initial illuminance may be described in the form of a table or may be described as a mathematical expression. In the present embodiment, it is assumed that the light reduction process is performed in the same manner on both the bulb-colored LED element 7a and the white LED element 7b. For this reason, as the second information 62, information common to both the bulb-colored LED element 7a and the white LED element 7b is described.

  As another example, in the second information 62, the relationship between the elapsed time and the supply current amount for each LED element 7 may be described in the form of a table, or may be described in a mathematical expression. Even if the light-emitting LED element 7a and the white LED element 7b are subjected to the dimming process in the same manner, it is assumed that the value of the supply current amount to each LED element (7a, 7b) itself is different. The Therefore, in this case, as the second information 62, information is described for each LED element (7a, 7b).

[Operation]
The operator 40 attaches the headband 3 to the head as shown in FIG. 3 and turns on the main power supply 31. When detecting that the main power supply 31 is turned on, the control unit 11 (current amount determination unit 12) reads the first information 61 from the storage unit 15, and based on the first information 61, at the initial time point The amount of current for the LED element 7 is determined. The control unit 11 (power feeding unit 13) outputs a current having the determined current amount to the cable 23. Thereby, the LED element 7 emits light. At this time, the initial illuminance set based on the first information 61 is realized in the illumination area 51.

  The timer 16 measures the elapsed time from the initial time point, that is, in this embodiment, the time point when the main power supply 31 is turned on. The control unit 11 (current amount determination unit 12) is supplied with information on elapsed time from the timer 16 sequentially or at predetermined timings. The control unit 11 (current amount determination unit 12) reads the second information 62 from the storage unit 15 according to the elapsed time from the timer 16, and re-uses the current amount for the LED element 7 based on the second information 62. decide. The control unit 11 (power feeding unit 13) outputs a current having the determined current amount to the cable 23. Thereby, the brightness | luminance of the LED element 7 falls for a while, and the illumination intensity of the illumination area | region 51 falls a little. However, as described above, the relationship described in the second information 62 is set so that a decrease in illuminance of the illumination area 51 cannot be recognized by the operator 40. For this reason, the operator 40 can continue the medical practice without recognizing the decrease in illuminance.

  The control unit 11 (current amount determination unit 12) continues the above processing according to the elapsed time. As a result, the illuminance of the illumination area 51 decreases with time. When the target illuminance value is described in the second information 62, the control unit 11 (current amount determination unit 12) stops the decrease in the amount of current supplied to the LED element 7 when the target illuminance value is reached. . Further, when the target processing time for performing the dimming process is described in the second information 62, the control unit 11 (current amount determination unit 12) has reached the target processing time from the initial time. At that time, the decrease in the amount of current supplied to the LED element 7 is stopped.

  According to said structure, the operator 40 can continue the medical action with respect to the patient 43, without recognizing that the illumination intensity of the illumination area 51 is decreasing. On the other hand, since the illuminance of the illumination area 51 is actually lower than the initial point with time, an effect of reducing the burden on the eyes and shoulders of the operator 40 can be obtained.

  By the way, depending on the operator 40, there may be a case where the illuminance of the surgical field (illumination area 51) is intentionally increased or decreased during the execution of the medical action on the patient 43. In view of such circumstances, the medical headlight 1 of the present embodiment is equipped with a voice recognition function.

  When the voice recognition on / off switch 32 is in the on state, the voice recognition indicator 35 receives the voice signal from the microphone 22 and converts the voice signal into a predetermined control signal and outputs it to the control unit 11. For example, when the operator 40 says “Up” using the microphone 22, the voice recognition indicator 35 receives a voice signal “Up”, and the controller 11 increases the amount of current supplied to the LED element 7 by a predetermined value. It is converted into an instruction signal indicating that it is to be output. When receiving the signal, the control unit 11 increases the amount of current supplied to the LED element 7 by the predetermined value. Thereby, the illumination intensity of the illumination area | region 51 rises. For example, the illuminance can be further increased by the operator 40 repeatedly speaking a predetermined wording such as “up” using the microphone 22.

  Similarly, for example, when the operator 40 says “down” using the microphone 22, the control unit 11 reduces the amount of current supplied to the LED element 7 by a predetermined value. Thereby, the illumination intensity of the illumination area | region 51 falls. For example, the illuminance can be further reduced by the operator 40 repeatedly speaking a predetermined wording such as “down” using the microphone 22.

  In addition, depending on the operator 40, there may be a case where the color temperature of the surgical field (the illumination area 51) is intentionally increased or decreased during the execution of the medical action on the patient 43. Even in such a case, the voice recognition function can be used. For example, when the operator 40 speaks “white” using the microphone 22, the voice recognition indicator 35 receives the voice signal “white”, and the control unit 11 receives the brightness value of the light bulb color LED element 7 a. The luminance signal ratio of the white LED element 7b is converted into an instruction signal for increasing by a predetermined value and output. When receiving the signal, the control unit 11 changes the amount of current supplied to the LED elements 7 (7a, 7b) so that the ratio of the luminance values increases by the predetermined value. Similarly, for example, when the operator 40 speaks “orange” using the microphone 22, the ratio of the luminance value of the bulb-colored LED element 7a to the luminance value of the white LED element 7b is increased by a predetermined value. The amount of current supplied to the LED element 7 (7a, 7b) is changed.

  Further, the operator 40 may continuously change the color temperature of the illumination area 51 (intermittently) by repeatedly speaking a predetermined word such as “white” or “orange” using the microphone 22. Absent.

  Note that a statement made by the operator 40 during the medical practice may be erroneously recognized by the voice recognition indicator 35, and the illumination mode of the illumination area 51 may change unintentionally. For the purpose of avoiding such a situation, a voice recognition on / off switch 32 is provided. The voice recognition function can be canceled by turning off the voice recognition on / off switch 32 in advance.

[Another embodiment]
Hereinafter, another embodiment will be described.

  <1> Individual differences may exist regarding the ease of visual recognition in the initial stage and the degree of decrease in illuminance that cannot be visually recognized. For this reason, the first information 61 and the second information 62 may be stored in the storage unit 15 as information for each operator 40. In this case, it is assumed that the storage unit 15 stores the first information 61 and the second information 62 in the storage unit 15 in a state linked to ID information for identifying each operator 40. be able to.

  Further, the first information 61 and the second information 62 may be stored in the storage unit 15 as attribute-specific information such as the age and sex of the operator 40 instead of the individual information of the operator 40.

  In such a case, the operator 40 needs to make the control unit 11 recognize his / her attributes before the use of the medical headlight 1 is started. As an example of this method, for example, information related to its own attribute (ID information, information regarding age and sex) is input through the microphone 22, and information regarding the attribute is output to the control unit 11 through the voice recognition indicator 35. Can be adopted. As another example, the control box 10 includes an attribute input operation unit (not shown), and the operator 40 inputs his / her attribute in advance through the operation unit, thereby giving the control unit 11 information regarding the attribute. Can be adopted.

  <2> The medical headlight 1 may be able to set in advance whether or not the controller 11 performs the light reduction process (automatic control light emission) based on the second information 62. In this case, the time point when the instruction to start the dimming process is output to the control unit 11 corresponds to the “initial time point”.

  As an example of this method, a dimming control on / off switch (not shown) is provided in the control box 10, and when it is not desired to perform dimming processing, a method of turning off this switch may be adopted. it can. When the dimming control on / off switch is “off”, the control unit 11 does not perform the dimming process based on the second information 62, and the dimming process from the time when the switch is “on”. Execute.

  As an example of another method, when the operator 40 issues a voice signal to turn off / on the dimming control through the microphone 22, the voice recognition indicator 25 has the same function as the dimming control on / off switch. It may be realized.

  <3> The structure of the medical headlight 1 described above is merely an example, and various modifications can be made. Specifically, it is as follows.

  In FIG. 1, the main body portion 5 includes a plurality of light emitting surfaces including four LED elements 7, and each light emitting surface is illustrated as if they are arranged with a step. However, this aspect is an example. For example, all the plurality of LED elements 7 provided in the main body 5 may be arranged on the same plane or the same curved surface.

  Whether or not the fin 9 is provided on the back side of the LED element 7 in the main body 5 is arbitrary. Whether or not the medical headlight 1 includes the face guard 21 is arbitrary. Whether or not the battery box 25 includes a remaining amount display monitor 28 and a remaining amount warning speaker 29 is arbitrary. Whether or not the control box 10 includes the back answer speaker 35 is arbitrary.

  The medical headlight 1 may be configured not to include the battery box 25 and to be driven by supplying power from a commercial power source.

  The fixing portions 4 for connecting the headband 3 and the main body portion 5 may be provided at three or more locations.

  <4> In the above embodiment, the case where the medical headlight 1 has a voice recognition function has been described. However, the medical headlight 1 may not have a voice recognition function.

DESCRIPTION OF SYMBOLS 1: Medical headlight 3: Headband 4: Fixing part 5: Main part 7: LED element 7a: Light bulb color LED element 7b: White LED element 8: Angle adjustment knob 9: Fin 10: Control box 11: Control part 12: Current amount determination unit 13: Power supply unit 16: Timer 21: Face guard 22: Microphone 23: Cable 25: Battery box 26: Charging connector 27: Battery cable 28: Remaining amount display unit 29: Remaining amount warning speaker 31: Main power supply 32: Voice recognition on / off switch 33: Dimming knob 33a: Light bulb color dimming knob 33b: White dimming knob 35: Voice recognition indicator 36: Voice recognition answerback speaker 40: Operator 41: Mounting base 43: Patient 50: Luminous flux 51: Akira area

Claims (6)

A headband having a curved shape configured to be mounted on the operator's head;
In a state of being located outside the headband, it is connected to a fixing portion provided in at least two places of the headband, and a main body portion on which the LED element is mounted,
A control unit that performs power supply control on the LED element;
First information on the amount of current supplied to the LED element at the initial time point when the LED element starts automatic control light emission, and second information on the relationship between the elapsed time from the initial time point and the amount of current supplied to the LED element A storage unit storing information;
A time measuring unit for measuring an elapsed time from the initial time point,
The second information describes a relationship in which the amount of current supplied to the LED element gradually decreases with the passage of time within a range in which the operator cannot visually recognize a change in illuminance.
The controller is
When an instruction signal to start the automatic control light emission is input, the supply current amount to the LED element is determined based on the first information stored in the storage unit, and the determined amount Supplying current to the LED element;
In accordance with the elapsed time from the initial time point input from the time measurement unit, the supply current amount to the LED element is determined based on the second information stored in the storage unit, and the determined A medical headlight characterized by supplying a quantity of current to the LED element. The light irradiation unit includes a plurality of first LED elements each having a first color temperature and a plurality of second LED elements each having a second color temperature different from the first color temperature.
In the first information, the amount of current supplied to each of the first LED element and the second LED element is described,
The second information describes the relationship between the elapsed time from the initial time point and the amount of current supplied to each of the first LED element and the second LED element, or the elapsed time from the initial time point and The medical headlight according to claim 1, wherein a relationship with a relative value with respect to a supply current amount at the initial time is described.   The control unit is configured to adjust a supply current amount to the first LED element and the second LED element over time while maintaining a constant ratio of a supply current amount to the first LED element and the second LED element. The medical headlight according to claim 2, wherein the control is performed so as to gradually decrease. The storage unit stores the first information and the second information for each attribute of the operator,
When the information related to the attribute of the operator is input, the control unit reads the first information and the second information corresponding to the attribute of the operator from the storage unit, and stores the information in the read information. The medical headlight according to any one of claims 1 to 3, wherein an amount of current supplied to the LED element is determined based on the amount. A control information input unit configured to be input by the operator;
When the control information is provided with instruction information related to increase or decrease in illuminance from the control information input unit, the control unit supplies the amount of current supplied to the LED element determined based on the first information and the second information. The medical headlight according to any one of claims 1 to 4, wherein an amount of current increased or decreased by a predetermined value is supplied to the LED element. When a predetermined voice signal is received, the voice recognition unit outputs an instruction signal corresponding to the voice signal to the control unit,
When an instruction signal related to an increase or decrease in illuminance is given from the voice recognition unit, the control unit is configured to supply current to the LED element determined based on the first information and the second information. The medical headlight according to any one of claims 1 to 5, wherein an amount of current increased or decreased by a predetermined value is supplied to the LED element.

Images