JPH06319702A - Medical photographing apparatus - Google Patents

Abstract

PURPOSE:To allow the voltage supplied from an apparatus main body to cope with the specification voltage and diversification of connection machinery. CONSTITUTION:Connection machinery 20 electrically operated by the supply of power from an apparatus main body 10 is connected to the apparatus main body 10 in a detachable manner and a voltage converting means converting the voltage of a power supply to the supply voltage coping with the specification voltage of the connection machinery 20 to supply power to the connection machinery 20 is provided to one of the apparatus main body 10 and the connection machinery 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical imaging apparatus provided with a connecting device which is detachably connected to an apparatus body and whose electronic parts are operated by power supply from the apparatus body.

[0002]

2. Description of the Related Art Conventionally, for example, a fundus camera has a
There is a device in which a photographing camera as a connecting device is connected to a main body of an apparatus for observing and photographing, and a fundus image guided by the photographing optical system is photographed and recorded by the photographing camera.

Such a photographing camera can be electrically operated by supplying a predetermined power supply voltage from the main body of the apparatus.

[0004]

By the way, in the medical imaging apparatus constructed as described above, the supply voltage from the apparatus main body to the connected equipment differs between the power supply voltage of the apparatus main body and the specified voltage of the connected equipment. In such a case, there is a problem that the connection device cannot be used because the device body and the connection device are not electrically compatible.

For example, when the supply voltage from the apparatus main body is set to 9V, it is possible to install and use an external film automatic film-taking camera having a specification voltage of 9V on the apparatus main body. A new built-in film self-winding film shooting camera with a specification voltage of 6V was released. Even if this new shooting camera is installed in the main body of the device, it is not possible to use the new shooting camera because the supply voltage and the working voltage are different. It is possible.

The present invention has been made in view of the above circumstances, and can supply the voltage supplied from the main body of the apparatus according to the specification voltage of the connected device, and can respond to the diversification of the connected device. An object is to provide a photographing device.

[0007]

In order to achieve the object, the present invention provides a medical imaging apparatus provided with a connecting device which is detachably connected to the apparatus main body and whose electronic parts are operated by power supply from the apparatus main body. In any one of the apparatus main body and the connection device, a voltage conversion means for converting the power supply voltage of the apparatus main body into a supply voltage according to a specification voltage of the connection device is provided before being supplied to the electronic component. That is the summary.

[0008]

In such a structure, even if the connected devices are diversified, the supply voltage of the power source supplied from the main body of the apparatus to the connected devices can correspond to the specified voltage of the connected devices.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the medical imaging apparatus of the present invention will be applied to a fundus camera and described with reference to FIGS.

In FIG. 1, reference numeral 1 is a fundus camera having a device body 10 and a photographing camera 20 as a connecting device.

The apparatus body 10 includes a base 11 and the base 1.
1, a chin rest 12 that is erected upright, a pedestal 13 that is supported by a base 11 and that can move in the front-back direction that approaches and separates from the chin rest 12, and that can be displaced in the left-right direction that intersects with the chin rest 12, A power switch 14 provided, a joystick 15 provided upright on the pedestal 13, an elevating device 16 fixed to the pedestal 13, and various optical systems for illumination / observation / photographing supported inside the elevating device 16 A housing 17 (not shown) is incorporated therein.

The photographing camera 20 is a mount portion 1 of the housing 17.
By joining the mount portion 21 to 7a, it is detachably connected to the apparatus body 10 optically, mechanically, and electrically. Further, the photographing camera 20 is provided with a power switch 22 as shown in FIG.

On the other hand, as shown in FIG. 3, the apparatus main body 10 and the photographing camera 20 are provided with control units 18 and 23, respectively, and the control unit 18 supplies power to the observation light source and the photographing light source (both together). Various electronic devices such as (not shown) are operated, and the control unit 23 operates various electronic devices such as a film winding device (not shown) by the power supply from the device body 10.

When the control section 23 causes the voltage comparison circuit 19a to output the specified voltage signal, the control section 23 is powered by the battery 24 built in the photographing camera 20. The battery 24 needs to be electrically driven even when the battery 24 is not connected to the apparatus body 10 such as a timer circuit (not shown) for printing the shooting date and time on the shooting camera 20 on the film. It is also designed to supply power to things that operate.

Further, the apparatus main body 10 includes a voltage comparison circuit 19a for comparing whether or not the voltage supplied to the photographing camera 20 matches the working voltage based on the specification voltage signal output from the control section 23. The changeover switch 19b that operates based on the comparison result of the voltage comparison circuit 19a and the photographing camera 2
There is provided voltage conversion means 19 including a voltage conversion circuit 19c that changes the power supply voltage to a supply voltage according to the specification voltage of 0.

As shown by the solid line in FIG. 3, the changeover switch 19b is normally connected to a contact a for supplying power to the photographing camera 20 with the power supply voltage as it is as the supply voltage. On the other hand, when the specification voltage of the photographing camera 10 is different from the power supply voltage, it is connected to the contact b that supplies power to the voltage conversion circuit 19c that converts the power supply voltage into a supply voltage according to the specification voltage.

Next, the operation of the present invention will be described based on the flowchart of FIG.

(Step 1) First, in step 1, the power switch 14 provided in the apparatus main body 10 is turned on, and various electronic devices can be operated by external power supply, and the process proceeds to step 2. To do.

(Step 2) In step 2, the power supply switch 22 provided in the photographing camera 20 is turned on, and at the same time, the control section 18 outputs a specified voltage signal to the voltage comparison circuit 19a, and then to step 3. And transition.

(Step 3) In Step 3, the control unit 1
On the basis of the specification voltage signal output from 8, the voltage comparison circuit 19a compares the specification voltage of the photographing camera 20 with the supply voltage in the supply state to the photographing camera 20, and if this supply voltage matches the specification voltage. The process proceeds to step 4, and if the supply voltage does not match the specified voltage, the process proceeds to step 5.

(Step 4) In Step 4, the voltage conversion circuit 1 is directly connected to the contact a without operating the changeover switch 19c according to the judgment result of the voltage comparison circuit 19a.
9c maintains the OFF state and shifts to step 6.

(Step 5) In Step 5, the changeover switch 19c is actuated to be connected to the contact b and the voltage conversion circuit 19c is turned on according to the judgment result of the voltage comparison circuit 19a, and the process proceeds to Step 7.

(Step 6) In step 6, since the changeover switch 19b is connected to the contact a, the power supply voltage matching the working voltage is supplied to the photographic camera 10 as the supply voltage.

(Step 7) In Step 7, since the changeover switch 19b is connected to the contact b, the power supply voltage is once supplied to the voltage conversion circuit 19c, and the voltage conversion circuit 19c causes the specification voltage of the photographing camera 20 to be reached. After the power supply voltage is converted into a corresponding supply voltage, the converted supply voltage is supplied to the photographic camera 20.

As described above, in the medical image pickup apparatus of the present invention, the power supply voltage is converted into the supply voltage according to the specification voltage of the image pickup camera 20 as a connecting device detachably connected to the apparatus body 10. Therefore, it is possible to realize diversification without restriction on the type of connected device.

By the way, in the above embodiment, the fundus camera to which the photographing camera can be connected is applied as the medical photographing apparatus, but the invention is not limited to the fundus camera. Also,
In the above embodiment, the voltage conversion means 19 is incorporated in the apparatus main body 10, but as shown in FIG. 5, the photographing camera 30 is provided with the voltage conversion means 39 and the changeover switch 19b.
May be unnecessary. At this time, the voltage comparison circuit 19a and the changeover switch 19c are operated by the power supply from the battery 24.

Further, as shown in FIG. 6, a separate voltage converting means 49 may be provided on one of the apparatus body 10 and the photographing camera 20 (for example, fixed to one of the mount portions 17a, 21). At this time, the voltage conversion means 49 causes the device body 10 to
It is set to operate with the supply voltage from. 5 and 6, the same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

Further, in the above embodiment, the one in which the supply voltage is automatically supplied according to the specified voltage is disclosed, but the specified voltage is set to a plurality or more (for example, 3V.
6V, 9V, 12V) select switch with the device body 10
It may be a manual operation provided in the.

[0029]

As described above, in the medical imaging apparatus of the present invention, the power source voltage of the apparatus body is supplied to the electronic component in either one of the apparatus body and the connection device. By providing the voltage conversion means that converts the supply voltage according to the specification voltage of the connected device, the supply voltage from the device main body can be made to correspond to the specification voltage of the connected device, and it is possible to diversify the connection device. Can respond.

[Brief description of drawings]

FIG. 1 is a side view of a fundus camera as a medical imaging apparatus of the present invention.

FIG. 2 is likewise a rear view of a photographing camera as a connected device.

FIG. 3 is likewise a block diagram showing a schematic configuration of a main part.

FIG. 4 is likewise a flowchart showing the operation.

FIG. 5 is a block diagram showing a schematic configuration of a main part showing a second embodiment of the medical imaging apparatus of the present invention.

FIG. 6 is a block diagram showing a schematic configuration of a main part showing a third embodiment of the medical imaging apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fundus camera (medical imaging device) 10 ... Device body 19 ... Voltage conversion means 20 ... Imaging camera (connection device)

Claims (1)

[Claims] 1. A medical imaging apparatus equipped with a connection device detachably connected to the device body and having electronic components activated by power supply from the device body, wherein one of the device body and the connection device comprises: A medical imaging apparatus comprising: a voltage conversion unit that converts a power supply voltage of the apparatus main body into a supply voltage according to a specification voltage of the connection device before supplying the power supply voltage to the electronic component.