JP3876365B2 - UV irradiation equipment - Google Patents

Description

  The present invention relates to an ultraviolet irradiation device for irradiating ultraviolet rays for curing ultraviolet curable resins used for adhesion of small parts.

  Conventionally, in the medical field, UV curable resin is cured in fields such as sterilization, treatment, spectroscopy (luminescence) diagnosis by irradiating ultraviolet rays inside and outside the living body, observation of minerals and deep part of old burial mounds, or assembly work of electronic components. An ultraviolet irradiation device is used for the purpose. Among these, the ultraviolet irradiation device for curing the ultraviolet curable resin is an ultraviolet curable resin widely used from the field of resist film formation and printing to the field of adhesion and fixing of small parts in assembly processes such as optical pickups. It is used for the purpose of irradiating ultraviolet rays. This type of ultraviolet irradiation device includes a controller that is a device body incorporating a power supply circuit and the like, a head that irradiates ultraviolet rays, and a cable that connects them. The controller is equipped with a high-pressure mercury lamp or mercury xenon lamp, which is an ultraviolet light source, and ultraviolet light is transmitted to the head by an optical fiber such as quartz glass built in the cable connecting the controller and the head, and resin is applied from the head. Irradiate the bonded part. A conventional example of a method for bonding and fixing small parts using such an ultraviolet irradiation device is described in Patent Document 1. There is also an ultraviolet irradiation device that can irradiate ultraviolet rays from a plurality of locations by connecting a plurality of heads to the same controller.

  However, this ultraviolet irradiation device has a structure in which the optical path is branched from the same ultraviolet light source and the ultraviolet rays are transmitted to each head, so that there is a problem that the ultraviolet irradiation conditions cannot be changed for each head. In particular, since a plurality of heads can irradiate only with the same output and irradiation timing, the operation cannot be performed with different settings for each head, and the operation utilizing the advantage of a plurality of heads cannot be performed. If the user can set the individual output, irradiation timing, etc. for each head according to the usage conditions, the usability will improve dramatically, but the conventional ultraviolet irradiation device uses the same ultraviolet ray source to transmit ultraviolet rays. In view of the configuration, it is physically impossible to set different conditions such as ultraviolet output and irradiation time. For example, the irradiation timing of ultraviolet rays cannot be linked between a plurality of heads, and irradiation can be started and ended at the same timing for all the heads. Further, even if a head that does not need to be irradiated is simply connected to the controller, it is irradiated together with other heads. For this reason, in order to obtain ultraviolet rays with different irradiation conditions, it is necessary to prepare as many ultraviolet irradiation devices as the number of conditions, which is extremely inconvenient.

  In addition, since conventional ultraviolet irradiation devices use high-pressure mercury lamps or mercury xenon lamps as ultraviolet sources, they generate a large amount of heat and consume power, require a cooling mechanism, increase the size and cost of the device, and always light up. As a result, the energy consumption is large and the lamp life is shortened. In addition, since the adjustment of the ultraviolet output is performed by a mechanical shutter, fine adjustment is difficult. Furthermore, when the lamp deteriorates, the glass may crack, and there is a risk of the glass tube bursting due to the high-pressure gas enclosed in the glass tube, so it is necessary to replace the lamp after a certain period of time, There was also a drawback that the running cost was certainly increased.

  Furthermore, since it is a structure that connects the controller and head using an optical fiber such as quartz glass for the cable, it is necessary to use a thick cable covered with a metal flexible cable to protect the optical fiber, There were drawbacks that were heavy and difficult to handle. In particular, optical fibers cannot be bent freely because the bending angle is limited. In addition, since the optical fiber has a transmission loss proportional to the length, the cable length cannot be increased.

In order to solve such problems, the applicant of the present application uses a high-power ultraviolet light emitting diode (UVLED) instead of a high-pressure mercury lamp or a mercury xenon lamp as an ultraviolet light source, and the LED is not a controller of the main body. The ultraviolet irradiation device provided in the head was developed (Japanese Patent Application Nos. 2003-158958 and 2003-317622). As a result, different ultraviolet irradiation conditions can be set for each head unit, and a plurality of head units can be connected to a single ultraviolet irradiation device and used independently.
JP-A-10-209492

  On the other hand, there is a case where it is desired to control ON / OFF of the ultraviolet irradiation device from an external connection device. The present invention has been made in view of such problems, and a main object of the present invention is an ultraviolet ray irradiation apparatus capable of ON / OFF control from an externally connected device in an ultraviolet ray irradiation apparatus having a plurality of head portions. It is to provide an irradiation apparatus.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, an ultraviolet irradiation device according to a first aspect of the present invention is an ultraviolet irradiation device for irradiating ultraviolet rays that can cure an ultraviolet curable resin, and is capable of irradiating ultraviolet rays. In order to control ON / OFF of the plurality of head units 120 including the ultraviolet light source which is the semiconductor element described above, the plurality of head unit connection units 160 each connectable to the plurality of head units 120, and the ultraviolet source of the head unit 120. The controller unit 110 including the control unit 114, the power source unit 112 that supplies a drive current to the ultraviolet light source controlled by the control unit 114 via the head unit connection unit 160, and the head unit 120 and the controller unit 110 are electrically connected. And a cable unit 130 having an electrical signal line for connection to each other, and the controller unit 110 further connects an external control device, and the external connection device Thus comprises a terminal block substrate having a terminal block to individually operable ON / OFF of the ultraviolet irradiation apparatus for each head unit, the head unit 120, adjusting circuit for adjusting the driving current of the UV light source 1228 It is equipped with a. Thereby, an external connection apparatus can be connected to an ultraviolet irradiation device via a terminal block, and ON / OFF of ultraviolet rays emitted from the ultraviolet irradiation apparatus can be controlled by the external connection apparatus. In particular, by making it possible to set the conditions for ultraviolet irradiation individually for each head section, different conditions can be set for each head section, as if they were used as a plurality of ultraviolet irradiation apparatuses. Further, by making it possible to control the ultraviolet irradiation for each head unit from an external connection device, it is possible to further increase the flexibility of operation.

  In addition, unlike high-pressure mercury lamps and mercury xenon lamps, semiconductor elements are unlikely to have a reduced life even if they are repeatedly turned on and off, and in addition, a stable illuminance can be obtained immediately. Therefore, power consumption can be suppressed, and the lifetime of the element itself can be extended. In addition, it greatly contributes to a reduction in running cost, and since it is small and generates little heat, it has excellent advantages such as miniaturization of the ultraviolet irradiation device.

Furthermore, it is possible to maintain accurate output control by adjusting fluctuations in the drive current due to deterioration of the ultraviolet light source over time.

Furthermore, in the ultraviolet irradiation device according to the second aspect of the present invention, the adjustment circuit 1228 includes a semi-fixed resistor.

Furthermore, in the ultraviolet irradiation device according to the third aspect of the present invention, the head unit 120 has a small hole at a position where the semi-fixed resistance built in the head unit 120 can be adjusted. As a result, a tool or the like can be inserted from the small hole, and the resistance value can be adjusted by operating the semi-fixed resistor, while avoiding a situation in which the drive current is changed by an unintended operation of the semi-fixed resistor, when necessary The resistance value can be adjusted.

Furthermore, in the ultraviolet irradiation device according to the fourth aspect of the present invention, the head unit 120 includes an indicator for displaying the ON / OFF state of the ultraviolet irradiation of each head unit. Thereby, ON / OFF of ultraviolet irradiation can be easily confirmed by a user's hand etc. for every head part.

Furthermore, in the ultraviolet irradiation device according to the fifth aspect of the present invention, the semiconductor element is the ultraviolet light emitting diode 150. With this configuration, the ultraviolet light emitting diode 150 having a small size and low power consumption can be used to contribute to downsizing, low power consumption, long life, reduction in running cost, and the like of the ultraviolet irradiation device. In particular, light-emitting diodes are resistant to mechanical shock, are inexpensive and easy to use.

Furthermore, the ultraviolet irradiation device according to the sixth aspect of the present invention is an ultraviolet irradiation device including a head unit including an ultraviolet light emitting diode as an ultraviolet ray source, and a controller unit to which a plurality of head units can be connected. Has a setting unit that can control the UV irradiation ON / OFF timing of the connected head unit, and an interface that can input the UV irradiation ON / OFF timing for each head unit from an external connection device. The UV irradiation ON / OFF timing can be individually set for each head unit by either the unit or the interface, and the setting unit of the controller unit can further set the UV irradiation time of the head unit. . Thereby, ON / OFF control of ultraviolet irradiation can be controlled not only from the ultraviolet irradiation apparatus main body side but also from an externally connected device, thereby improving convenience.

Furthermore, in the ultraviolet irradiation apparatus according to the seventh aspect of the present invention, the setting unit of the controller unit has an irradiation switch for manually controlling the ON / OFF timing of the ultraviolet irradiation of the connected head unit. As a result, the user can manually start / stop ultraviolet irradiation by operating the irradiation switch.

Furthermore, in the ultraviolet irradiation apparatus according to the eighth aspect of the present invention, a foot switch can be connected to the interface provided in the controller unit, and the foot switch controls the ON / OFF timing of the ultraviolet irradiation of the head unit. It can be used as an irradiation switch. Thereby, the user can instruct the start / stop of the ultraviolet irradiation with his / her foot.

Furthermore, the ultraviolet irradiation device according to the ninth aspect of the present invention can be configured such that the ON timing of ultraviolet irradiation can be individually set for each head unit by either the setting unit or the interface.

Furthermore, in the ultraviolet irradiation apparatus according to the tenth aspect of the present invention, the setting unit of the controller unit can further set the intensity of the ultraviolet irradiation output of the head unit.

Furthermore, in the ultraviolet irradiation apparatus according to the eleventh aspect of the present invention, the setting unit 140 of the controller unit 110 further inputs an irradiation condition input means for inputting the irradiation time of the ultraviolet light and the intensity of the irradiation output corresponding to the irradiation time. And a head selection unit that selects the head unit 120 that sets the irradiation condition set by the irradiation condition input unit.
Furthermore, in the ultraviolet irradiation apparatus according to the twelfth aspect of the present invention, the setting unit 140 sets a plurality of steps including a combination of a fixed irradiation output and an irradiation time corresponding to the irradiation output as one ultraviolet irradiation condition. Can be configured.
Furthermore, the ultraviolet irradiation apparatus according to the thirteenth aspect of the present invention is an ultraviolet irradiation apparatus including a head unit 120 including an ultraviolet light emitting diode as an ultraviolet ray source, and a controller unit 110 to which a plurality of head units 120 can be connected. The controller unit 110 includes a setting unit 140 capable of controlling the ON / OFF timing of UV irradiation for a plurality of channels to which a plurality of head units are connected, and ON / OFF of UV irradiation for each channel from an external device. An interface capable of inputting the OFF timing, and is configured so that the ON / OFF timing of ultraviolet irradiation can be individually set for each channel by either the setting unit 140 or the interface, and the setting unit of the controller unit 110 140 can further set the UV irradiation time of the channel A. Thereby, ON / OFF control of ultraviolet irradiation can be controlled not only from the ultraviolet irradiation apparatus main body side but also from an externally connected device, thereby improving convenience.
Furthermore, in the ultraviolet irradiation device according to the fourteenth aspect of the present invention, the setting unit 140 of the controller unit 110 can have an irradiation switch for manually controlling the ON / OFF timing of the ultraviolet irradiation of the channel. As a result, the user can manually start / stop ultraviolet irradiation by operating the irradiation switch.
Furthermore, in the ultraviolet irradiation device according to the fifteenth aspect of the present invention, a foot switch can be connected to the interface provided in the controller unit 110, and the foot switch controls the ON / OFF timing of the ultraviolet irradiation of the channel. It can be configured to be usable as an irradiation switch. Thereby, the user can instruct the start / stop of the ultraviolet irradiation with his / her foot.
Furthermore, the ultraviolet irradiation apparatus according to the sixteenth aspect of the present invention can be configured such that the ON timing of ultraviolet irradiation can be individually set for each channel by either the setting unit 140 or the interface.
Furthermore, in the ultraviolet irradiation apparatus according to the seventeenth aspect of the present invention, the setting unit 140 of the controller unit 110 can further set the intensity of the ultraviolet irradiation output of the channel.
Furthermore, in the ultraviolet irradiation apparatus according to the eighteenth aspect of the present invention, the setting unit 140 of the controller unit 110 further inputs an irradiation condition input means for inputting the ultraviolet irradiation time and the intensity of the irradiation output corresponding to the irradiation time. And channel selection means for selecting a channel for setting the irradiation condition set by the irradiation condition input means.
Furthermore, in the ultraviolet irradiation apparatus according to the nineteenth aspect of the present invention, the setting unit 140 sets a plurality of steps including combinations of a fixed irradiation output and an irradiation time corresponding to the irradiation output as one ultraviolet irradiation condition. Can be configured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment described below exemplifies an ultraviolet irradiation device for embodying the technical idea of the present invention, and the present invention does not specify the ultraviolet irradiation device as follows.

  Further, in this specification, in order to facilitate understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as “claim column” and “means for solving the problems”. It is added to the members shown in the column. However, the members shown in the claims are not limited to the members in the embodiments. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation. Furthermore, in the following description, the same name and symbol indicate the same or the same members, and detailed description thereof will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing.

[Embodiment 1]
FIG. 1 shows a block diagram of an ultraviolet irradiation apparatus according to Embodiment 1 of the present invention. In the ultraviolet irradiation device 100 shown in this figure, the controller unit 110 and the head unit 120 are connected by a cable unit 130. The head unit 120 incorporates a UVLED 150 as an ultraviolet ray source that emits ultraviolet rays for curing the ultraviolet curable resin. The controller unit 110 includes a power source unit 112, a control unit 114, and a storage unit 116 for driving the ultraviolet source of the head unit 120, and sends a driving signal (electric signal) of the ultraviolet source to the head unit 120 via the cable unit 130. Send.

  The ultraviolet irradiation device can switch between a setting mode for setting ultraviolet irradiation conditions and an irradiation mode for actually irradiating ultraviolet rays. The ultraviolet irradiation conditions set by the setting unit 140 (described later) in the setting mode are stored in the storage unit 116. The setting unit 140 sets a plurality of ultraviolet irradiation conditions and stores them in the storage unit 116. In the irradiation mode, the control unit 114 calls a necessary ultraviolet irradiation condition setting from the storage unit 116, and the control unit 114 supplies a driving current from the power supply unit 112 to the head unit 120 according to this setting, and controls the ultraviolet source of the head unit 120. . The ultraviolet irradiation conditions can be set independently for each head part.

  The controller unit 110 is provided with a plurality of head unit connection units 160 for connecting the head unit 120. Each head unit connection unit 160 is assigned a unique channel number, and is distinguished from other head unit connection units by the channel number. In the example of FIG. 1, four channel head unit connections 160 of channels 1 to 4 are provided, and the head unit 120 is connected to each head unit connection unit 160.

  Each head unit 120 receives a driving current from the controller unit, operates an ultraviolet ray source, and irradiates the ultraviolet ray U to the outside. Further, as shown in FIG. 1, the head unit 120 is provided with an identification unit 121 capable of displaying identification information for identifying each head unit 120 for each channel. The identification information displays information on the channel number, so that the user understands the channel number assigned to each head unit, thereby distinguishing the plurality of head units from each other. The identification information can be displayed by directly displaying the channel number as will be described later, or by using a plurality of lighting combinations, lighting patterns, and the like. Therefore, the display here includes not only display of numbers and character information but also information display by lighting. The lighting includes a continuous lighting display and a lighting display with blinking and strength.

  When identifying the head unit 120, the setting unit 140 of the controller unit 110 instructs the ultraviolet irradiation device to execute the identification operation. When the identification operation is instructed, the control unit 114 of the controller unit 110 generates an identification signal and sends it to the head unit 120 side. Upon receiving the identification signal, the head unit 120 displays identification information on the identification unit 121. The user can recognize the channel number by looking at the identification information displayed on the identification unit 121 of the head unit 120, and can distinguish the head unit 120 based on the channel number.

(Identification part 121)
The identification unit 121 is a member that performs display for indicating identification information, and includes a lighting unit 1211. The lighting unit 1211 includes a light emitting element, and for example, a light bulb or a semiconductor light emitting element can be used. An LED is preferably used.

  The example of the identification part 121 which provided the lighting part 1211 in FIGS. The head unit 120A shown in FIG. 2 includes an indicator that displays an ON / OFF state of ultraviolet irradiation, and a lighting unit 1211 corresponding to each channel number as an identification unit 121A. When the head unit 120A receives the identification signal from the controller unit, the head unit 120A displays the lighting unit 1211 corresponding to its own channel number. The control of which lighting unit 1211 is displayed is transmitted by including in the identification information a method of performing on the head unit side that received the identification information, or information indicating which lighting unit of the head unit is lit on the controller unit side. Any of the methods can be employed. By providing as many lighting portions as the number of channel numbers, the channel numbers can be displayed directly, and the channel numbers can be easily understood. In the example of FIG. 2, lighting units 1211 for CH1 to CH4 are provided for displaying four channels.

  In the example of FIG. 3, as the head unit 120B according to the second embodiment of the present invention, two lighting units 1211, A and B, are provided as identification units 121B for a 4-channel display. By combining the display of the two lighting parts 1211A and B11, four patterns can be displayed. That is, the lighting unit 1211A and the lighting unit 1211B are turned off, the channel 1 is turned on, the lighting unit 1211A is turned off and the lighting unit 1211B is turned on, the channel 2 is turned on, and the lighting unit 1211A is turned on and the lighting unit 1211B is turned off. Channel 4 is displayed by lighting of 1211A and lighting unit 1211B. In this way, a larger number of channels can be expressed with a smaller number of components without providing lighting units for the number of channels.

  In addition to displaying two patterns of lighting and extinguishing, each lighting unit can express two patterns or three or more patterns by changing the emission color or emission intensity. By combining these patterns, a larger number of channels can be expressed with fewer lighting sections. When an LED is used for the lighting part, the intensity of the light emission can be easily realized by adjusting the driving current of the LED. In addition, LEDs that can emit light in multiple colors can change the emission color by combining LEDs of each color by combining two or three LEDs.

  Note that the correspondence table between the combinations of the lighting units 1211A and B and the channel numbers may be attached to the manual, or may be written on the surface of the head unit 120B or the controller unit. By referring to the correspondence table, the user can quickly understand the channel number.

  Further, in the example of FIG. 4 showing the head unit 120C according to Embodiment 3 of the present invention, one lighting unit 1211C constituting the identification unit 121C is provided. In this case, the channel number is displayed by the blinking pattern of the lighting portion 1211C. Upon receiving the identification signal from the controller unit, each head unit 120C blinks in a pattern as shown in FIG. 5 according to the assigned channel number. FIG. 5 shows a pattern of pulses transmitted to the identification unit 121C. That is, blinking is repeated periodically for the number corresponding to the channel number, such as once for channel 1, twice for channel 2, and so on. The lighting cycle T1 is made sufficiently longer than the blinking interval T2. For example, the lighting pulse interval T1 is set to 400 ms, and the lighting cycle T2 is set to 4 s. Accordingly, the user can recognize the channel number by counting the number of times the identification unit 121 of each head unit blinks. In this example, since only one lighting part is required, the number of parts can be further reduced.

  Moreover, it can be expressed by the intensity of light emission of the lighting part instead of blinking. That is, as long as the flushing can be grasped by the user, it is not necessary to turn off the lighting part completely, and it may be turned on slightly. The blinking display is sufficient if the display of the lighting part can be distinguished in two stages.

  An instruction to start the identification operation is issued from the setting unit 140 of the controller unit 110. However, by providing an identification operation execution switch on each head unit side and operating the identification operation execution switch, the channel number assigned to the identification unit of this head unit is assigned to the head unit connection unit to which the head unit is connected. May be displayed. Further, the end of the identification operation may be configured to automatically end after a predetermined time has elapsed since the start of the identification operation, in addition to the user inputting an instruction to end the operation separately. For example, the identification operation is automatically ended after 15 seconds from the execution of the identification operation or after repeating the display of the identification information five times.

  Furthermore, the display of the identification information can be performed on all the head units or on a specific head unit. In the case of executing for all the head units, when the identification operation execution command is instructed from the setting unit, the identification information is displayed all together on the display units of all the head units. This method has an advantage that the operation is simple because all the head portions can be distinguished by a single operation.

  In addition, when displaying identification information on a specific head unit, for example, a channel number of a head unit connection unit to which a desired head unit is connected is input together with the execution of the identification operation from the setting unit. As a result, only the identification unit of the corresponding head unit displays the identification information. Although this method needs to repeat the operation for the number of heads to be identified, only the head unit to be identified displays the identification information, so it is sufficient to search only for the head unit in which the identification unit is operating. There is also an easy advantage. In particular, in this method, since it is not necessary to distinguish the identification part of the head part from the others, the display of the identification part can be simplified. For example, a desired head part can be detected by turning on or blinking only the identification part of the corresponding head part and turning off the other identification parts, sounding a buzzer or a beep sound, or combining blinking and sound.

  Alternatively, it may be configured such that when an identification operation is commanded, each head unit does not display identification information at the same time, but switches for each head unit so that identification information is sequentially displayed. For example, after identifying or illuminating the identification unit of the corresponding head unit for a predetermined time in ascending order of the channel number, the identification unit is illuminated or blinking in the same manner for the head unit corresponding to the next channel number. The display of identification information is circulated or repeated periodically. At this time, each identification unit can be blinked so that the channel number can be determined by the pattern of FIG. 5 in addition to blinking. According to this method, identification by all the identification units is executed by one designation, and the operation of the identification unit is only one at a time, so that each determination is easy.

  FIG. 6 shows an example in which an identification information display unit 1212 is provided instead of the lighting unit as the head unit 120D according to Embodiment 4 of the present invention as still another example of the identification unit 121D. The identification information display unit 1212 is, for example, a 7-segment display or a liquid crystal display. As a result, the channel number can be directly expressed as a number, and the user can immediately grasp the channel number. In the example of FIG. 6, a one-digit 7-segment display is provided. The 7-segment display can express 10 channels from 0 to 9 even if one digit is used. Also, by combining alphabets, it becomes possible to express more channels such as 16 channels.

  The identification information display unit can be used in combination with an individual display unit described later. This makes it possible to reduce the number of parts and the cost by sharing the display unit.

  The above identification unit increases or decreases the number of display digits of the identification unit according to the number of heads connectable to the ultraviolet irradiation device.

  Further, the identification unit does not limit the display unit for the identification information to the lighting unit. For example, a sounding member such as a speaker is provided, such as a method of pointing a channel number with a rotating or moving needle, a method of indicating a channel number by sliding an indicating unit as a level meter-like identification unit, a method of rotating a dialed number, etc. Various methods such as a method of using sound such as the number of beeps and the channel number generated by sound can be used. In addition to displaying the channel number, the digital display using the 7-segment display described above, Arabic numerals, Roman numerals, binary / binary decimal display, alphabetic / Chinese numerals, or lighting is displayed. It is also possible to display the channel number by the number to be used. As described above, in the present invention, an existing or future developed method capable of displaying channel numbers can be used as a display means for identifying information.

  In addition, it is not necessary to provide an identification part for every head part. For example, when two head parts are connected to an ultraviolet irradiation device, an identification part is provided only for one head part, and this head part can be identified. Then, it is possible to distinguish from the other head part. Or an identification part is provided only in the specific head part which wants to identify. For example, when two head units are used under the same ultraviolet irradiation conditions and another two units are used under different conditions, an identification unit may be provided only on the two head units set under different conditions. good. In other words, the identification unit can be omitted from the head unit that does not need to be identified.

  Furthermore, the identification unit can be realized using an existing lighting member without providing a member such as a lighting unit.

  First, the head unit 120 according to the fifth embodiment of the present invention shown in FIG. 7 also uses an indicator that indicates ON / OFF of ultraviolet irradiation as the identification unit 121. The indicator is an emission lamp that warns the user that ultraviolet rays are being irradiated, or a pilot lamp that indicates that the power is on. In this example, an LED is used. By using the indicator LED 1226 to blink by the pulse of FIG. 5 described above, it can function as the identification unit 121. Alternatively, when a specific channel number is instructed from the controller unit as described above, the desired head unit can be distinguished by turning on or blinking only the indicator LED of the corresponding head unit and turning off the other indicator LEDs. Alternatively, it can also be distinguished by sequentially turning on or blinking the indicator LED of each head unit as described above. Since this method does not require new hardware, an identification function can be added using a conventional configuration. Further, since the indicator LED is often a high-brightness LED, there is an advantage that it is easy to distinguish.

  Alternatively, the emission color of the indicator LED may be changed when used as an indicator and when used as an identification unit. For example, when it is used as an indicator, it emits light in green, and when identification information is displayed, it is displayed in red. This enables the user to grasp that the identification information is being displayed.

  Further, it can be identified by the ultraviolet light source itself. When the ultraviolet light source includes visible light, the head portion can be distinguished by blinking using the visible light. In particular, when a light emitting diode is used as an ultraviolet light source, the light emission spectrum of the light emitting diode tends to be broad, and thus a sufficient visible light region is included. Therefore, by turning on or blinking the ultraviolet light source itself in the same manner as the indicator LED, or by turning on only the head part of the corresponding channel number, the user can mutually connect the head parts from the visible light contained in the ultraviolet light source. Can be distinguished. At this time, in order to protect the user's eyes from ultraviolet rays, it is preferable to wear ultraviolet goggles.

  This method can also be realized with an existing configuration without providing an extra member, and can be suitably used when there is a problem in the visibility of the identification unit in addition to the merit of reducing the number of parts. In other words, since the head part is often used by being fixed in some way, in this case, if the identification part is provided in the head part, the fixing part of the head part may cover the identification part, or the installation location or angle Depending on the situation, the identification unit may be located at a position that is difficult to see from the user side. Even in such a case, since the region irradiated with ultraviolet rays is usually positioned so as to be always visible, if it is a method for identification using visible light contained in this ultraviolet ray, There is an advantage that the identification information can be visually recognized with certainty.

[Circuit configuration example]
Next, an example of a block diagram of an ultraviolet irradiation device that realizes the above configuration will be described with reference to FIGS. FIG. 8 is a block diagram illustrating a drive circuit that drives the identification unit 121 in the example of FIG. 2 in which the identification unit 121 employs a head unit 120A configured of a plurality of lighting units 1211. As shown in this figure, the control unit 114 of the controller unit 110 generates an identification signal for the head unit desired to be detected when the identification operation is performed, and sends the identification signal from the output port to the head unit 120A via the drive circuit 118. The control unit 114 generates and sends an identification signal for generating a lighting pattern in software. In this example, since the lighting unit 1211 includes four lighting unit LEDs, the control unit 114 generates an identification signal for each lighting unit LED. The lighting unit LED is connected to a constant voltage source via a resistor. Moreover, the connection method of the identification signal transmitted via the cable part 130 is driving each lighting part LED directly as parallel. Of course, not only parallel connection but also serial connection can be adopted.

  In this example, a configuration in which only one head unit 120A is connected is shown. However, when a plurality of head units are connected, the output from the control unit 114 is equivalent to the number of units, that is, the number of head unit connection units 160. Just connect in parallel. The control unit 114 includes an MPU, a CPU, and the like as will be described later.

  8 is a configuration example that realizes the head unit 120A of FIG. 2, but FIG. 3 and FIG. 4 can also be realized with the same configuration. The configuration of FIG. 3 and FIG. 4 is realized by changing the number of the lighting unit LEDs and the driving signal of each lighting unit LED to a corresponding combination or a signal for executing the lighting pattern.

  FIG. 9 is a block diagram showing a drive circuit that drives the identification unit 121D in the head unit 120D of FIG. 6 in which the identification information display unit 1212 is provided in the identification unit 121D. In the configuration of FIG. 6, the identification information tends to increase in order to display the channel signal in detail on a 7-segment display or the like, and in order to transmit a lot of data to the identification information display unit 1212, the serial connection is changed to the parallel connection. Adopt connection. First, the control unit 114D generates an identification signal to be sent to the corresponding head unit 120D, and serially transfers it to the drive circuit 118D. Therefore, the control unit 114D transmits an identification signal to the drive circuit 118D via the data signal line and the clock signal line. Similarly, the drive circuit 118D sends the identification signal data to the head unit 120D via the cable unit 130D while being serial. On the other hand, the head unit 120D includes a serial / parallel conversion unit 1204 and a head unit side drive circuit 1206. The head unit 120D converts the serial signal received from the controller unit 110D into a parallel signal by the serial / parallel conversion unit 1204, and the head unit side drive circuit 1206 displays a channel number and the like on the identification information display unit 1212 based on the parallel signal. To do.

  Further, FIG. 10 is a block diagram showing a drive circuit for driving the identification unit 121 in the head unit 120 in which the indicator corresponding to FIG. In FIG. 10, since the drive circuit 118 for driving the indicator LED 1226 is originally provided, this circuit configuration is used as it is, and a drive signal for driving the indicator LED 1226 as the identification unit 121 is generated from the control unit 114. The indicator LED 1226 of the head unit 120 is driven via the drive circuit 118. In the example of FIG. 10, the control unit 114 generates an identification signal and sends it from the output port to the drive circuit 118, and the drive circuit 118 displays the drive current for driving the indicator LED 1226 based on the identification signal via the cable unit 130. It supplies to LED1226 and lighting control is carried out. This circuit has an advantage that the circuit can be configured simply because the existing circuit configuration can be used almost as it is. In the example of FIG. 10, two LEDs are used as the indicator LED 1226, but it goes without saying that one LED or three or more LEDs may be used as will be described later.

  Further, FIG. 11 shows an example of a circuit that realizes a configuration in which the appearance is the same as the head unit 120 of FIG. 7, but the visible light of the ultraviolet ray source is used as the identification unit 121E of the head unit instead of the indicator. Also in the head part 120E having this configuration, since the ultraviolet irradiation device has a circuit configuration for driving and controlling the UVLED 150E which is originally an ultraviolet ray source, it can be used almost as it is. In the example of FIG. 11, a constant current circuit which is an aspect of a power supply unit that converts an identification signal, which is a digital signal generated by the control unit 114E of the controller unit 110E, into an analog signal by the D / A conversion unit 119 and drives the UVLED 150E. Input to 1121. The constant current circuit 1121 supplies a predetermined drive current to the UVLED 150E via the cable unit 130E based on the analog signal, and drives the UVLED 150E to turn on. At this time, when a high current value and a low current value are set as the predetermined drive current, and these are alternately sent repeatedly, a blinking pattern is obtained.

(UV source)
A semiconductor light emitting device such as a light emitting diode (LED) or a semiconductor laser (LD) can be used as the semiconductor device which is an ultraviolet ray source. These semiconductor elements have excellent features such as small size, high efficiency, low calorific value, long life and resistance to mechanical vibration compared to mercury xenon lamps and the like, and can be used ideally. In this embodiment, an ultraviolet light emitting diode (UVLED) that directly irradiates ultraviolet light is used as a semiconductor element. In the UVLED, for example, a nitride compound semiconductor represented by the general formula In _x Al _y Ga _1-xy N (0 ≦ x, 0 ≦ y, x + y ≦ 1) is used for the active layer (light emitting layer). Things are available. In addition, a double hetero structure, a single quantum well structure (SQW), a multiple quantum well structure (MQW), or the like can be appropriately employed for the light emitting layer. Needless to say, the present invention is not limited to the UVLED that directly irradiates ultraviolet rays, and a configuration that converts the irradiation light of the LEDs into ultraviolet light by using, for example, a wavelength conversion element or the like can be adopted as appropriate.

  The UVLED is turned on only when necessary, in other words, it is not always turned on, thereby suppressing power consumption and extending the life of the UVLED. However, as in the case of a conventional high-pressure mercury lamp or the like, it is possible to adopt a configuration in which the UV LED is always turned on and the shutter is mechanically operated to turn on / off the ultraviolet output.

  As the wavelength of ultraviolet light output from the semiconductor element, near ultraviolet light having a wavelength of about 300 to 400 nm, for example, a wavelength of about 380 nm can be used, and the wavelength is determined according to the ultraviolet curable resin used. As the ultraviolet curable resin, for example, an alicyclic epoxy resin, an epoxy resin containing a glycidyl group-containing epoxy resin, an ultraviolet activated cationic polymerization catalyst, an ultraviolet activated adhesive containing a cationic polymerization inhibitor, and the like can be used. The ultraviolet wavelength, the purpose of use, and the application used in the present invention are not limited to these.

(Cable section 130)
As the cable unit 130, a wire harness in which a power line and a signal line are bundled is used. Since this cable part 130 is a simple electric signal line that does not include an optical path such as an optical fiber, the cable part 130 is not subject to the restriction of the total length due to the limitation of the bending angle or the light attenuation, and is used in the conventional ultraviolet irradiation device. It can be made thinner and lighter than the flexible cable that has been used, has high flexibility and is extremely easy to handle. Moreover, there is no restriction on the total length, and the length can be increased. For this reason, when different ultraviolet irradiation conditions are set and used for a plurality of head units 120, the cable can be extended and connected to one ultraviolet irradiation device, so that the system design and arrangement can be flexibly supported.

(Head 120)
Hereinafter, the appearance of the head unit according to the fifth embodiment is shown in FIGS. 12 to 15 as the head unit 120 of the ultraviolet irradiation apparatus according to each embodiment of the present invention. 12A is a front view of the head unit 120, and FIG. 12B is a partial cross-sectional view showing the internal structure. 13 to 15 are exploded views of the head unit 120. FIG. 13 is an exploded perspective view seen from above, FIG. 14 is an exploded perspective view seen from the lower side opposite to FIG. 13, and FIG. The perspective view which shows the state which connected each of 14 connection connectors 1231 and 1244 is shown, respectively. The head portion 120 shown in these drawings includes a head main body portion 122 having a cable portion 130 connected to the proximal end side, a cooling block 124 detachably coupled to the distal end side thereof, and a detachably coupled to the distal end side thereof. An interchangeable lens holder 126 is provided. The head main body 122 has a size that can be gripped by the user, and includes a hollow box-shaped case in which case members 1221 and 1222 that are divided vertically and a base end member 1223 are combined as shown in FIG. A substrate 1224 is accommodated in the housing. A cable connector 1225 to which the cable portion 130 is connected is attached to the base end member 1223, and the cable portion 130 and the substrate 1224 are electrically connected via the cable connector 1225.

  The substrate 1224 includes electronic components for controlling the drive by supplying the drive current received from the cable unit 130 to the UVLED 150. On the substrate 1224, an indicator LED 1226 is mounted as an indicator for displaying the ON / OFF state of ultraviolet irradiation. In the example of FIG. 13, two indicator LEDs 1226 are arranged to increase the amount of light. However, it goes without saying that one LED may be used by using a light quantity required for the indicator or a high-brightness LED. Moreover, it can also be set as 3 or more LED.

  Various electronic components for receiving a drive signal generated by the control unit 114 of the controller unit 110 and supplying a drive current to the UVLED 150, a memory unit 1227, an adjustment circuit 1228, and the like are mounted on the substrate 1224. . The memory unit 1227 stores the operating time of the head unit 120 and is used for recording the initial characteristics of the UVLED 150, and an EEPROM which is a nonvolatile memory can be suitably used.

(UVLED150 adjustment work)
A semiconductor element such as the UVLED 150 has good output linearity with respect to the drive current, but the output tends to decrease with time of use. Therefore, accurate output control can be maintained by adjusting the drive current in consideration of output fluctuation due to deterioration with time. The drive current is adjusted for each head unit 120 by an adjustment circuit 1228 such as a semi-fixed resistor (current adjustment trimmer) as shown in FIG. In the example of FIG. 12B, the semi-fixed resistor constituting the adjustment circuit 1228 is configured to be mounted on a substrate in the head unit 120 and cannot be adjusted from the outside. The situation where the drive current is changed is avoided. However, it is also possible to employ a configuration that allows adjustment of the drive current from the outside. For example, the resistance value can be adjusted with a specially shaped tool, or a small hole is opened in the case of the head portion 120 so that the resistance value can be adjusted from the hole. Alternatively, the controller portion 110 or the head portion can be adjusted. For example, a method of allowing the adjustment function of the adjustment circuit 1228 to be called by a specific operation, such as a long press of an individual setting switch provided at 120, can be employed.

  In order to perform such adjustment of the drive current periodically, every time the usage time of each head unit 120 reaches a certain time, a report is made to the user to prompt the user to adjust the drive current. The memory unit 1227 provided in each head unit 120 updates and stores the integrated value of the driving time of the UVLED 150, that is, the driving integrated time. The control unit 114 of the controller unit 110 controls the driving of the UVLED 150 of the head unit 120 via the D / A converter and the drive circuit 118 and writes the integrated value of the driving time to the memory unit 1227 of the head unit 120. . This writing (update storage) is performed every predetermined time (for example, every minute). Then, when the drive integration time read from the memory unit 1227 reaches a predetermined adjustment time, the control unit 114 outputs a notification so that the UVLED 150 is adjusted. As the notification output, for example, blinking display of LED, buzzer sound, etc. are used. Alternatively, when the controller unit 110 is provided with a display capable of displaying a message, a message prompting the adjustment work of the UVLED 150 may be displayed using the display. The user grasps that the time required for adjustment work has been reached based on the notification output, and performs current correction using the adjustment circuit 1228 as described above. For example, in consideration of a decrease in output with respect to a reference drive current, adjustment is made so that the drive current increases.

  Further, when the drive integration time reaches the lifetime of the UVLED 150, a notification output that prompts replacement of the UVLED 150 may be performed.

  Further, the memory unit 1227 stores data relating to the initial characteristics of the UVLED 150 and can be used for adjusting the drive current. In general, there is an individual difference (variation) in the initial luminance of the UVLED 150, and therefore an initial luminance adjustment circuit 1228 is usually required in the drive circuit on the head portion 120 side of the UVLED 150. For the initial luminance adjustment circuit, a semi-fixed resistor or the like is used. For example, the adjustment circuit 1228 shown in FIG. Then, it is necessary to perform initial adjustment by an initial luminance adjustment circuit in each head unit 120 so that the ultraviolet irradiation power becomes a predetermined value for each head unit 120.

  In the ultraviolet irradiation apparatus of the fifth embodiment, the initial luminance adjustment circuit as described above is stored in the memory unit 1227 by storing the initial characteristic data regarding the initial luminance measured in advance of the UVLED 150 mounted on each head unit 120. And the initial adjustment work using this becomes unnecessary. That is, the control unit 114 reads the initial characteristic data from the memory unit 1227 and determines an appropriate basic drive current (more precisely, a digital value corresponding to the initial characteristic data) according to the initial characteristic data.

  A digital value corresponding to the drive current output from the control unit 114 is converted into an analog voltage by a D / A converter and is provided to the drive circuit 118. The drive circuit 118 drives the UVLED 150 of the head unit 120 with a drive current corresponding to the applied analog voltage. In addition, since this drive current can be increased / decreased adjusted by the setting part 140, this can adjust an ultraviolet irradiation output.

  As described above, by providing the memory unit 1227 on the head unit 120 side, accurate adjustment according to the characteristics of the UVLED 150 provided in the head unit 120 can be realized. For example, when the channel of the head unit connector 160 that is one form of the head unit connection unit of the controller unit 110 to which the head unit 120 is connected is uniquely fixed, the above-mentioned memory unit may be provided on the controller unit 110 side. Such adjustment is possible. This is because the memory unit on the controller unit 110 side can store drive integration time and initial characteristic data for each channel. However, when the channel to which the head unit 120 is connected is changed, the above method cannot be used, and the user side always stores the connection destination UV irradiation device and its channel number for each head unit 120 by some means. It takes a lot of time and is not easy to use. Therefore, by providing the memory unit 1227 on the head unit 120 side as described above, even if the head unit 120 is connected to any channel number of any ultraviolet irradiation device, accurate driving according to the characteristics of the head unit 120 is performed. Current adjustment is realized and usability is improved.

(Cooling block 124)
In addition, since the UVLED 150 that emits ultraviolet rays tends to generate more heat than the LED that emits normal visible light, it is preferable to provide a heat dissipation mechanism in the head unit 120 so that it can be used stably for a long period of time. In the example shown in FIGS. 12 to 15, the UVLED 150 is connected to the cooling block 124. The cooling block 124 functions as a heat sink that cools heat generated during operation of the UVLED 150, and is made of a metal having good thermal conductivity such as aluminum. The UVLED 150 is fixed in close contact with the front end surface of the cooling block 124. FIG. 16 is a diagram illustrating a state in which the UVLED 150 is closely fixed to the front end surface of the cooling block 124. As shown in this figure, the UVLED 150 is fixed to the front end surface of the cooling block 124 by three fixing screws 1241.

(Lens holder 126)
The lens holder 126 houses one or a plurality of optical system lenses 1261 for condensing ultraviolet rays emitted from the UVLED 150. FIG. 17 is an exploded view showing the lens holder 126 and an example of its internal structure. In this example, the first lens 1261A and the second lens 1261B are fixed inside the lens holder 126 by a spacer 1262 and a lens fixing cap 1263 with two lenses. Although a single lens can be used, the lens size tends to increase with a single lens because of the refractive index. Therefore, in the fifth embodiment, the size of the lens itself is reduced by using two optical system lenses 1261 and irradiating the UV light from the UVLED 150 to the outside with the first lens 1261A and the second lens 1261B. Thus, the lens holder 126 and the head unit 120 can be reduced in size.

  FIG. 18 is a diagram illustrating an example of a method for fixing the cooling block 124 and the lens holder 126. In this example, the cooling block 124 and the lens holder 126 are fixed to each other by three fixing screws 1242. Further, by preparing and replacing a plurality of types of lens holders 126 having different combined focal lengths of the lenses, the tip of the head unit 120 and the ultraviolet irradiation target (ultraviolet curable resin) can be used while using the same head unit 120. It is possible to cope with the case where the distance from the adhesive fixing part) changes.

  Returning to FIG. 13, a method of fixing the cooling block 124 and the head main body 122 will be described. After the cooling block 124 and the lens holder 126 are fixed as described above, the upper case member 1221 and the lower case member 1222 constituting the head main body 122 are aligned with each other, and the distal end portion protrudes from the proximal side of the cooling block 124. The parts 1243 are sandwiched between the cooling blocks 124 with fixing screws 1229. Further, the base end member 213 is fixed to the base end surfaces of the upper case member 1221 and the lower case member 1222 using a fixing screw 1230.

  As shown in FIGS. 14 and 15, the cooling block 124 including the cable connector 1225 and the UVLED 150 is electrically connected to the substrate via connection connectors 1231 and 1244, respectively. As a result, the UVLED 150 receives power supply from the controller unit 110 via the cable unit 130 and is driven and controlled. Thus, it has the advantage that it is easy to disassemble each part and to perform maintenance work, such as replacement and repair, by connecting each block that requires electrical connection via a connection connector. In particular, the head unit 120 shown in the figure has a structure in which a head main body unit 122, a cooling block 124, and a lens holder 126 are coupled in order, so that the head unit 120 can be easily divided for each unit and has excellent maintainability.

  Further, as shown in FIGS. 14 and 15, the lower case member 1222 has a through hole 1232 which is a screw hole for fixing the head portion 120 to a holder or the like. As shown in FIG. 13, the lower case member 1221 is provided with a protective plate 1245 so that the tip of the screw does not damage the substrate 1224 or the mounted components on the substrate when the head portion 120 is fixed by screwing screws or the like. It is fixed and blocks between the through hole 1232 and the substrate 1224.

(Controller unit 110)
FIG. 19 shows a front view of the controller unit 110. In this example, a four-channel controller unit 110 to which four head units 120 can be connected is shown. Although connectable number of the head portion 120 is determined by the tea down channel number, the number of channels is also, or it can of course be also be 5 or more and 3 or less. The controller unit 110 shown in this figure is provided with a display unit 142 and an operation panel 144 as a setting unit 140 for individually setting the ultraviolet irradiation conditions of the UVLED 150 on the front panel. In FIG. 19, the display unit 142 is arranged at the upper part of the front panel, and the operation panel 144 is arranged therebelow.

(Operation panel 144)
The operation panel 144 constituting the setting unit 140 is provided with <,>, ∧, ∨ switches 144A, 144B, 144C, and 144D, an escape switch 144E, and an enter switch 144F, which are selection switches for up, down, left, and right. The user operates these switches and sets the ultraviolet irradiation conditions of the UVLED 150 according to a predetermined procedure. Note that the operation panel 144 is not limited to this example, and various input devices such as a cross key, a numeric keypad, and a jog dial can be used. The operation panel may be a touch panel integrated with the display unit. Various switches provided on the operation panel 144 can be used in common for the operation of each head unit 120, and can be set by switching the channel to which each head unit 120 is connected.

  Note that the switches of the setting unit 140 need not be fixed on the controller unit 110, and may be provided as separate members from the controller unit 110. For example, a configuration in which switches are provided in a setting unit separate from the controller unit 110, such as a console, a remote controller, and a foot switch, and these are connected to the controller unit 110 by wire or wirelessly and operated is also within the scope of the present invention. . Further, as will be described later, settings and operations may be performed from an external connection device connected to the ultraviolet irradiation device.

  Further, in this specification, the setting unit includes an aspect that is used other than at the time of setting the ultraviolet irradiation condition. For example, the setting unit includes an irradiation switch that is used when the ultraviolet irradiation device is operated. For example, when a foot switch is connected as the irradiation switch to the controller unit 110, an ON / OFF input delay can be set to prevent chattering due to disturbance. The on-timing (delay setting) and off-timing (delay setting) of ultraviolet rays can be set individually or collectively using the setting unit.

(Display unit 142)
The display unit 142 constituting the setting unit 140 includes a 7-segment display using LEDs and a liquid crystal display. The user performs a setting operation while displaying and confirming the ultraviolet irradiation conditions such as the output of ultraviolet rays and the irradiation time set on the operation panel 144 on the display unit 142. The display unit 142 switches and displays the setting conditions of each head unit 120 on one screen. Further, as will be described later, a plurality of display units can be provided for each head unit 120 individually. The ultraviolet output is set and displayed by a relative intensity value, for example, a drive duty factor of the UVLED 150, but may be displayed by an absolute output value (mW or the like). Note that the display unit 142 can be configured by a liquid crystal or an organic EL to enable graphical display such as icon display. Further, color display may be possible.

  In addition, a channel display lamp 145 is provided for each channel below the display unit 142. Thereby, the channel currently selected and displayed on the display unit 142 can be distinguished. In the illustrated example, four channel display lamps 145 of 1 to 4 channels are provided. Further, an ultraviolet irradiation lamp 146 is disposed adjacent to these channel display lamps 145. The ultraviolet irradiation lamp 146 functions as a pilot lamp indicating that the ultraviolet rays are emitted (emission) from any of the head units 120, and is configured by, for example, an LED. That is, when the LED of the ultraviolet irradiation lamp 146 is lit, the user is notified that ultraviolet rays are being irradiated.

  A power switch 147 and a batch irradiation switch 148 are provided below the operation panel 144. The power switch 147 is a switch for turning on / off the power of the ultraviolet irradiation device. For example, by adopting a key switch as the power switch 147, it is possible to avoid a situation where the switch is unexpectedly turned on.

(Batch irradiation switch 148)
When the batch irradiation switch 148 is pressed, ultraviolet rays can be independently emitted from all the head units 120 in accordance with the respective ultraviolet irradiation conditions set in advance for each head unit 120 by the setting unit 140.

(Head connector 160)
Further, a head unit connector 160, an individual irradiation lamp 170, and an individual irradiation switch 180 are provided for each head unit 120 at the lower portion of the front panel. In FIG. 19, the head part connector 160 arranged vertically on the left side is a connector for connecting the cable of the head part 120 and constitutes a head part connection part. As described above, the controller unit 110 of FIG. 19 is provided with the 4-channel head unit connector 160 so that the four head units 120 can be connected. Of course, it is not necessary to use all the channels, and it is needless to say that only any of these channels can be used according to the use conditions.

(Individual irradiation lamp 170)
In addition, an individual irradiation lamp 170 is disposed adjacent to the right side of each head unit connection connector 160. The individual irradiation lamp 170 is a lamp for indicating that ultraviolet rays are irradiated from the UVLED 150 of the head unit 120 connected to each channel. Thereby, the user can confirm which head unit 120 is currently irradiated with ultraviolet rays. An LED or the like can also be used for the individual irradiation lamp 170. When the batch irradiation switch 148 is pressed, all the individual irradiation lamps 170 are turned on.

(Individual irradiation switch 180)
Furthermore, an individual irradiation switch 180 is arranged on the right side of the individual irradiation lamp 170. The individual irradiation switch 180 is a switch for individually turning on / off the ultraviolet output of the head unit 120 connected to each channel. By providing the individual irradiation switch 180 for each channel, the ultraviolet output of the head unit 120 connected to each channel can be individually operated. In particular, by providing the dedicated switch, each operation can be performed with a small number of operations (for example, only by pressing a button). Since the output of the head unit 120 can be turned ON / OFF, an ultraviolet irradiation device can be used more conveniently. However, it is also possible to configure the operation panel 144 to turn on / off each channel without providing an individual irradiation switch.

  The layout arrangement of the setting unit 140 has been described with reference to FIG. 19, but it goes without saying that these arrangements can be arbitrarily changed. For example, in the example of FIG. 19, a plurality of channels are arranged vertically, and the head unit connector 160, individual irradiation lamp 170, and individual irradiation switch 180 are arranged for each channel in the horizontal direction. However, as another embodiment, Channels can be arranged in the horizontal direction, and head unit connectors, individual irradiation lamps, individual irradiation switches, etc. for each channel can be arranged in the vertical direction. In the above-described embodiment, the irradiation lamp and the irradiation switch are provided separately. However, if a switch with a backlight that lights in the on state is used, these can be integrated into one member.

  As shown in FIG. 1, the controller unit 110 includes a power supply unit 112 and a control unit 114. The commercial power supplied from the AC inlet is supplied to the power supply unit 112 via the line filter, the fuse and the power switch 147, and the direct current stabilization voltage generated by the power supply unit 112 is supplied to the control unit 114. The control unit 114 can be realized by a gate array such as a microprocessor (MPU), LSI, FPGA, or ASIC. The control unit 114 includes a memory, and controls the intensity of near-ultraviolet rays from each head unit 120, irradiation timing, and the like according to a program stored in advance and a user's setting operation. A terminal block board and a communication connector are connected to the control unit 114, and an external control device such as a computer or a PLC (programmable logic controller) can be connected to the controller unit 110 using these interfaces. . As will be described later, the externally connected device can be used for setting ultraviolet irradiation conditions and for ON / OFF operation of the ultraviolet irradiation apparatus. That is, the setting unit 140 provided in the controller unit 110 of the ultraviolet irradiation device can be used for setting and operation, and the ultraviolet irradiation device can be turned on / off by a trigger input from an external device.

  In addition, four head unit connection connectors 160 are connected to the control unit 114, and each head unit 120 is connected to the control unit 114 of the controller unit 110 via these head unit connection connectors 160. And the control part 114 gives the electric signal for drive control of UVLED150 of each head part 120 to each head part 120, and controls the intensity | strength of near ultraviolet rays from each head part 120, and irradiation timing. Further, a front panel substrate is connected to the control unit 114. A display panel and various switches constituting the display unit 142 and the setting unit 140 provided on the front panel of the controller unit 110 are mounted on the front panel substrate. The user can individually set the intensity of near ultraviolet rays, the irradiation timing, and the like of the four head units 120 using the display unit 142 and the setting unit 140.

[Mode switching]
As described above, the ultraviolet irradiation apparatus according to the present embodiment can be switched between the setting mode for setting the ultraviolet irradiation condition and the irradiation mode for irradiating ultraviolet light by the control unit. For switching between the setting mode and the irradiation mode, a dedicated changeover switch can be provided, or a combination of specific switches or a long press can be used. In the present embodiment, the setting mode and the irradiation mode are switched between each other by long-pressing the escape switch 144E (for example, 3 seconds or more) in the operation panel 144 shown in FIG.

[Irradiation mode]
Details of the irradiation mode will be described below. First, in the present embodiment, in the irradiation mode of the ultraviolet irradiation device, a batch irradiation mode in which ultraviolet rays are irradiated from all the head units 120 and an individual irradiation mode in which ultraviolet rays are irradiated from one head unit 120 are provided. Yes. As described above, when the batch irradiation switch 148 is operated, the batch irradiation mode is executed, and when the individual irradiation switch 180 is operated, the individual irradiation mode is executed.

  Further, each irradiation mode can be distinguished into an automatic mode and a manual mode. The automatic mode is a mode in which the irradiation output and the irradiation time can be changed in accordance with preset ultraviolet irradiation conditions. That is, when the irradiation start command is received in the automatic mode, irradiation is started with the irradiation pattern registered for each head unit 120 in advance, and ultraviolet irradiation is automatically stopped after completion. On the other hand, the manual mode is a mode for switching ON / OFF of ultraviolet irradiation at a designated timing. That is, when an irradiation start command is received, irradiation is continued at a constant output until an irradiation stop command is received. Output is started when the irradiation switch is turned on, and is finished when the irradiation switch is turned off. As will be described later, the ultraviolet output value can be changed even in the manual mode.

  The UV irradiation start and stop commands in the irradiation mode are realized by the trigger input from the irradiation switch or terminal block provided in the controller unit 110 as described above. In the present embodiment, the irradiation mode is executed when the irradiation switch is pressed once, and is interrupted or stopped when the irradiation switch is pressed again. In the case of interruption, the irradiation mode is resumed by maintaining the pause state and pressing the switch again.

[Manual irradiation mode]
The ultraviolet irradiation device can store a plurality of ultraviolet irradiation conditions set by the setting unit 140 in the storage unit 116. Further, the operation mode can be stored for each ultraviolet irradiation condition setting. In the manual mode, the ultraviolet output value can be stored for each head unit 120. Accordingly, in the individual manual irradiation mode, it is possible to irradiate each of the plurality of head units 120 with different ultraviolet power outputs. Further, in the collective manual irradiation mode, different heads 120 can simultaneously start different ultraviolet outputs, and can simultaneously end irradiation. Moreover, since irradiation permission / non-permission can be set for each head unit 120, even if the head unit 120 is connected to the ultraviolet irradiation device, irradiation can be performed only from the desired head unit 120. In the conventional ultraviolet irradiation device, all the heads connected to the same device are output with the same output and timing, so as long as the head is connected to the device, the output is always generated along with the output of other heads. Could not stop. On the other hand, in this embodiment, since each head unit 120 is independent, there is an advantage that permission / non-permission of ultraviolet irradiation can be easily set.

[Automatic irradiation mode]
Also in the automatic mode, the irradiation pattern can be stored for each head. Therefore, in the batch automatic irradiation mode, irradiation can be started simultaneously with different irradiation patterns by the plurality of head units 120, and irradiation can be ended at different timings. As described above, such an operation cannot be realized by the conventional ultraviolet irradiation apparatus. In particular, it was impossible to stop at different irradiation patterns and different timings for each head. However, according to the present embodiment, it is possible to output each head unit 120 independently with different outputs and timings, and extremely high flexibility. High UV irradiation is realized. As described above, since irradiation permission / non-permission can be set for each head unit 120, even if the head unit 120 is connected to the ultraviolet irradiation device, irradiation can be performed only from the desired head unit 120. Furthermore, if irradiation start commands can be input for each head unit, ultraviolet irradiation can be started at different timings for each head unit. For example, it is only necessary to provide as many individual irradiation switches as the number of head units, or to prepare terminal block trigger inputs for the number of head units.

  To summarize the operation modes described above, in the batch automatic irradiation mode, ultraviolet irradiation is performed on all the head units 120 under ultraviolet irradiation conditions such as ultraviolet output and irradiation time preset for each head unit 120. When the batch irradiation switch 148 is pressed, ultraviolet irradiation is started from each head unit 120, and ultraviolet irradiation is executed independently at various different outputs and times. Note that the end of ultraviolet irradiation differs for each head unit 120 according to each setting, and automatically ends for each head unit 120 when the setting is completed.

  In the collective manual irradiation mode, when executed, all the head units 120 output ultraviolet rays at a constant value. When the batch irradiation switch 148 is pressed, ultraviolet irradiation is started from each head unit 120, and when the batch irradiation switch 148 is pressed again, ultraviolet irradiation of each head unit 120 is stopped. Even in this case, the ultraviolet output value can be changed for each head.

  Further, when the individual manual irradiation mode is executed in each head unit 120, ultraviolet light is output from the head unit 120 at a constant value. Even in this case, the ultraviolet output value for each head can be changed.

[Individual automatic irradiation mode]
The individual automatic irradiation mode is a mode in which ultraviolet irradiation conditions are set for each head unit 120. The function corresponding to the individual automatic irradiation mode can be substantially realized by using the collective automatic irradiation mode even if not provided. That is, by irradiating only specific UVLEDs and not irradiating other UVLEDs, by setting the ultraviolet irradiation conditions such as the irradiation time and output of the specific UVLEDs, the UVLEDs are executed when the batch automatic irradiation mode is executed. Only can automatically perform UV irradiation with a set pattern. However, in this case, only specific UVLEDs can be irradiated with ultraviolet rays, and in order for other UVLEDs to perform operations corresponding to the individual automatic irradiation modes, it is necessary to be able to execute a plurality of batch automatic irradiation modes in parallel. There is. On the other hand, it is possible to set the batch automatic irradiation mode so as to operate a plurality of UVLEDs. However, when the operation timing for each UVLED changes, it becomes difficult to cope with it. On the other hand, since it may be more convenient for some users to set and execute automatic irradiation for each head unit, an individual automatic irradiation mode can be provided separately.

[Setting method of UV irradiation conditions]
Next, a method for setting the ultraviolet irradiation condition will be described with reference to FIG. Here, in order to obtain a pattern in which the ultraviolet rays irradiated from each head unit 120 change in a step shape with time as shown in FIG. 21B, a plurality of rectangular waves as shown in FIG. As an example, consider an example in which individual rectangular wave conditions are set. Here, each rectangular wave shown in FIG. 21, that is, a set of ultraviolet irradiation conditions including a combination of a constant irradiation output and irradiation time is referred to as a step here.

[Rectangular wave irradiation pattern]
FIG. 20 shows an outline of the setting method when the head unit 120 includes one UVLED 150. In FIG. 20, first, in step 1001, the number of the head unit 120 is selected. As described above, in the present embodiment, four head units 120 are connected to channels 1 to 4, and the channel to be set is selected here. Next, in step 1002, a step number is selected. Steps are set in order from 1, and in this embodiment, up to 20 steps can be set in one ultraviolet irradiation condition setting. Next, an ultraviolet irradiation time is set in step 1003 for the selected step. Here, the number of seconds is specified. Furthermore, in step 1004, an ultraviolet irradiation output is designated. Here, the duty ratio is set. In step 1005, the setting is temporarily saved, and the process returns to the step number selection step, and loops until the setting is completed for all necessary steps. When the ultraviolet irradiation pattern as shown in FIG. 21 is set in this way, the ultraviolet irradiation condition setting is stored.

  Note that the order of the above steps can be changed as appropriate. For example, the irradiation time may be set after setting the irradiation output first.

  FIG. 22 is a flowchart showing the above steps in more detail. First, in step 1201, an ultraviolet irradiation condition setting number (setting number) is selected. In the present embodiment, 20 ultraviolet irradiation condition settings from no0 to no19 can be recorded. Next, in step 1202, an irradiation mode is selected. There are three irradiation modes, U0 to U2, and designates a batch manual irradiation mode, an individual manual irradiation mode, and a batch automatic irradiation mode. In the present embodiment, a mode corresponding to the individual automatic irradiation mode is not adopted. Next, in step 1203, the channel number to which the head unit 120 for setting the ultraviolet irradiation condition is connected is selected. Here, four channel numbers CH1 to CH4 are selected.

  Next, in step 1204, it is set whether or not to permit ultraviolet output to the head unit 120 connected to the selected channel number. By making it possible to set permission / non-permission of ultraviolet irradiation for each head unit 120, it is possible to use the head unit 120 without outputting ultraviolet light from all the head units 120 connected in the conventional manner. If the output is permitted, the process proceeds to step 1205. If not permitted, it is determined in step 1204-1 whether or not all the head units 120 have been set. If not yet, the process returns to step 1203 to determine another head unit. The setting of 120 is continued, and when the setting of all the head units 120 is completed, the process jumps to step 1211.

  In addition, when providing several UVLED so that it may mention later, permission / non-permission of ultraviolet irradiation can also be set for every UVLED.

  Next, in step 1205, it is determined whether or not the irradiation mode selected in step 1202 is the automatic mode. In the case of the automatic mode, a step number is selected in the next step 1206. Up to 20 step numbers can be set from S0 to S19. If it is not the automatic mode, it is unnecessary to select a step number, and the process jumps to step 1207. In step 1207, the irradiation time is set. Enter the number of seconds here. Next, in step 1208, the irradiation output is set. Here, the duty ratio is input. Next, in step 1209, it is determined whether or not all necessary step numbers have been set. If not, the process returns to step 1206 to repeat the setting of the next step number. If completed, the process proceeds to step 1210 to determine whether or not the setting of all head units 120 has been completed. If not, the process returns to step 1203 to repeat the setting of other head units 120. If completed, the process proceeds to step 1211 and the above setting is stored in the storage unit 116 and the process ends.

[Hierarchy menu]
Next, display switching in the display unit 142 provided in the controller unit 110 will be described. In this embodiment, a hierarchical menu method is adopted. FIG. 23 shows an example of a hierarchical menu. As shown in this figure, the ultraviolet irradiation apparatus can be switched between an irradiation mode and a setting mode, and various menu items can be selected in each mode. Also, various setting items may exist for the selected menu item, and each item is set down to each layer as shown in the downward direction in FIG.

[Display in irradiation mode]
Next, a display example of the display unit 142 in the irradiation mode will be described based on FIG. In the irradiation mode, as shown in FIG. 24, items such as the setting number display during operation, current timer value display, current irradiation power value display, and cumulative irradiation time display are switched and displayed. Items are switched by the left and right <,> switches 144A, 144B. Further, when the escape switch 144E is pressed for a long time while displaying the highest hierarchy, the mode between the irradiation mode and the setting mode is changed as described above. On the other hand, when the escape switch 144E is pressed for a long time from a layer other than the highest layer, a transition is made to the highest layer of that mode.

(Setting number display during operation)
The setting number display during operation indicates the setting number currently selected. In this example, J0 is selected. Up to 20 settings can be stored as setting numbers from no0 to J19, and an arbitrary setting number is selected from these. Further, as shown in FIG. 24, a channel display lamp 145 provided below the display unit 142 displays the head unit 120 for which irradiation is set at the currently displayed setting number. Accordingly, the user can easily grasp which head unit 120 is irradiated with ultraviolet rays at the setting number being selected. In this example, it is shown that the UVLED 150 operates in all the head portions 120 of the channels 1 to 4.

  In this embodiment, the setting number is changed in the setting mode as will be described later. However, the setting number may be changed in the irradiation mode. For example, a method of moving to the setting number selection menu by pressing the enter switch 144F from the screen of FIG. 24 or a method of changing the setting number by pressing the ∧, ∨ switches 144C, 144D from the screen of FIG. it can.

(Current timer value display)
The current timer value display indicates the ultraviolet irradiation time. In the example of the figure, it is shown that the head unit 120 connected to the channel 1 is set to irradiate for 12 seconds. When executing the setting of the ultraviolet irradiation condition of the set number, the remaining irradiation time is displayed in seconds from the set irradiation time in a countdown manner, and the user can easily know the remaining time. When displaying a channel for which the irradiation time is not set, it is displayed as --- when stopped, and the elapsed time is displayed in seconds in a count-up manner when executed. Thereby, the user can confirm how much irradiation time has passed now. As described above, by automatically switching the time display method between countdown and countup depending on whether or not the irradiation time is set, the user can know whether or not the irradiation time is set, as well as the elapsed time and remaining time. It can be used conveniently for grasping the situation when the ultraviolet curable resin is adhered. Moreover, the display unit of time can employ | adopt suitably the display in the ratio of the number of powder, the number of hours, or a progress condition other than the number of seconds.

  In the example of FIG. 24, the irradiation time of channel 1 is displayed, but when the ∧ and ∨ switches 144C and 144D are pressed in this state, the information can be switched to other channel information. Thus, in the present embodiment, the <,> switches 144A, 144B are used for menu switching, and the ∧ and ∨ switches 144C, 144D are used for selection and change of item values, respectively. In the example of FIG. 24, when the ∧ switch 144C is pressed, the channel is switched in the order of channel 2 → 3 → 4 → 1. At the same time, the lighting of the channel display lamp 145 is switched to the corresponding channel, and it is possible to determine which item the currently displayed item (in this case, the irradiation time) is information of the head unit 120 connected to. If information on channels for which irradiation is not set is displayed, “---” is displayed on the display unit 142.

  Note that, without performing these switch operations, the information on the set channels may be automatically switched and sequentially displayed.

(Current irradiation power value display)
The current irradiation power value display displays the output value of ultraviolet irradiation. In this example, the relative intensity is displayed by the drive duty ratio of the UVLED of channel 1, but display in other units such as a percentage display where the maximum output is 100 and an output wattage can also be appropriately employed. In this case as well, information on other channels can be switched and displayed by pressing the ∧ and ∨ switches 144C and 144D.

(Cumulative irradiation time display)
The cumulative irradiation time display displays the cumulative value of the ultraviolet irradiation time, that is, the total usage time of the UVLED. As a result, it is possible to grasp how long the UVLED is used, grasp the lifetime, and obtain a guideline for adjusting the drive current. In this case as well, information on other channels can be switched and displayed with the ∧ and ∨ switches 144C and 144D. In FIG. 24, “h” and “H” are separately used to distinguish the units, “h” indicates x10 hours, and “H” indicates x100 hours. In this way, the meaning of the unit is given by using the capital letter and the small letter of the symbol, and a large amount of information can be displayed on a small display screen.

  The display example of the display unit 142 in the irradiation mode has been described above. Of course, it goes without saying that other display items can be added or only arbitrary items can be displayed.

  In the example of FIG. 23, in the irradiation mode, the menu item basically functions as switching of the display unit 142, and thus no further hierarchical structure is provided. Of course, it goes without saying that the display items may be switched in a hierarchical structure.

[Setting mode]
Next, details of a method for setting the ultraviolet irradiation condition in the setting mode will be described with reference to FIGS. 25 and 26. As shown in FIG. 25, in the setting mode, the four items of the setting number menu during operation, the setting edit menu, the communication condition menu, and the other condition menu are switched by the <,> switches 144A and 144B. Selection of the menu is executed by pressing the enter switch 144F, and the mode can be shifted to the setting mode of the selected item. If the escape switch 144E is pressed, it is possible to return to a higher hierarchy.

  Of course, a plurality of items may be combined or other items may be added. For example, the communication condition menu and the other condition menu may be combined into one, or the edit setting menu may be divided into two.

(Setting number menu during operation)
The setting number menu during operation selects a setting number for setting the ultraviolet irradiation condition used in the irradiation mode. Here, a desired setting number is selected by the ∧ and ∨ switches 144C and 144D from among the ultraviolet irradiation condition settings that have been set and stored. After selection, when the enter switch 144F is pressed, “End” is displayed on the display unit 142, the selected setting number is saved, and the setting number menu is returned to during operation.

  In this embodiment, a setting number menu during operation and a setting editing menu described later are provided separately, but these may be integrated. In this case, the number selected in the previous setting operation is held, and it is handled that the setting of this number is selected in the irradiation mode.

(Settings edit menu)
The setting edit menu is a menu for setting ultraviolet irradiation conditions. Details of the setting edit menu are shown in FIG. Major items included in the setting edit menu include a setting screen for selecting an edit setting number and selecting an irradiation mode. When the setting on each setting screen is completed and the enter switch 144F is pressed, the next setting screen is displayed.

(Edit setting number selection)
First, in the edit setting number selection, a setting number is selected. In the present embodiment, a maximum of 20 settings from no0 to 19 can be stored as described above. Of course, more or less numbers can be set.

(Irradiation mode selection)
Next, an irradiation mode is selected for the selected setting number. As described above, there are three control modes U0 to U2, that is, one of the batch manual irradiation mode, the individual manual irradiation mode, and the batch automatic irradiation mode. When the irradiation mode is selected and the enter switch 144F is pressed, “End” is displayed on the display unit 142, the above settings are temporarily stored, and the process proceeds to editing channel selection.

  In the edit channel selection, the channel number to which the head unit 120 to be set is connected is selected from CH1 to CH4. Next, the process proceeds to output permission selection, and it is selected whether or not to permit ultraviolet output for the head unit 120 of the channel number selected above. “On” is displayed on the display unit 142 when it is permitted, and “off” is displayed when it is not permitted. When the enter switch 144F is pressed in this state, the process proceeds to a step number selection screen or a step number selection disabled display according to the irradiation mode selected on the irradiation mode selection screen.

(Detailed settings for batch automatic irradiation mode)
When the batch automatic irradiation mode is selected on the irradiation mode selection screen, the process proceeds to the step number selection screen and the step number is selected. As described above, a maximum of 20 step numbers from S0 to S19 can be set, and a necessary number is set in order. When the step number is selected, the irradiation time setting screen is displayed and the ultraviolet irradiation time is input. Next, the irradiation output is similarly input. These input values are increased or decreased by the で and ∨ switches 144C and 144D. For the convenience of input, the previous set value can be copied and input as a default value, or high-speed increase / decrease can be enabled by long press. When the above settings are completed, the enter switch 144F is pressed to temporarily save the settings and return to the step number selection screen. At this time, a value obtained by incrementing the set step number by 1 is input as a default value. When all the step numbers have been set, pressing the escape switch 144E returns to the edit setting number selection screen.

(Detailed settings for batch manual irradiation mode and individual manual irradiation mode)
On the other hand, when the batch manual irradiation mode or individual manual irradiation mode is selected on the irradiation mode selection screen, the output is a constant value, and the step that makes the output variable cannot be selected. Proceed to At this time, “s .---” is displayed on the display unit 142 to indicate that the step number cannot be selected. Since the irradiation time is not set in the manual irradiation mode, the irradiation output setting screen is displayed when the enter switch 144F is pressed in this state. After setting the output with the duty ratio in the same manner as described above, when the enter switch 144F is pressed, the setting is saved and the screen returns to the edit channel number selection screen. As described above, the ultraviolet irradiation condition is set in the edit setting menu.

(Communication condition menu)
In the communication condition menu, communication conditions for connecting the ultraviolet irradiation device and the external connection device with the RS-232C interface are set. In the example of FIG. 25, baud rate selection, stop bit / parity selection, and delimiter / checksum selection can be set from the communication condition menu. When the setting on each setting screen is completed and the enter switch 144F is pressed, the next setting screen is displayed. First, in the baud rate selection, selection is made with the ∧ and ∨ switches 144C and 144D from preset options of 1200 bps, 2400 bps, 4800 bps, 9600 bps, 1920 bps, and 38400 bps, and the enter switch 144F decides. In the display unit 142, the number of display digits is saved by displaying in x100 such as “b.384”. Note that a baud rate value other than the above can be set as long as it is compatible with hardware.

  In the stop bit / parity selection, 1 or 2 for the stop bit, no parity, even number, and odd number can be selected. In the example of the figure, these combinations are presented as options in advance, and stop bit 1 and no parity (display “y.1n” on the display unit 142), stop bit 1 and parity even (“y.1E”), stop bit 1 · Parity odd number (“y.1o”), Stop bit 2 · No parity (“y.2n”), Stop bit 2 · Parity even number (“y.2E”), Stop bit 2 · Parity odd number (“y.1E”) 2o ") is selected with the ∧ and ∨ switches 144C and 144D, and determined with the enter switch 144F.

  Similarly, in delimiter / checksum selection, CR or ETX can be selected as a delimiter, and checksum can be selected. In the example shown in the figure, these combinations include a delimiter CR and no checksum (display “d.C0” on the display unit 142), a delimiter CR and a checksum (“d.C1”), a delimiter ETX and no checksum (“ d.E0 "), and delimiter ETX / with checksum (" d.E1 ") are selected by the ∧ and ∨ switches 144C and 144D and determined by the enter switch 144F.

(Other condition menu)
In the other condition menu, input contact selection and lighting alarm time editing can be set. Input contact selection sets a delay time to prevent chattering, such as when a foot switch is connected. In the lighting alarm time editing, a time for warning due to UVLED deterioration is set.

  The configuration of the hierarchical menu described above is an example, and other configurations can be adopted as appropriate. For example, the switch in the horizontal direction is used for selecting the menu and the switch in the vertical direction is used for setting the selected item, but it goes without saying that the horizontal direction and the vertical direction may be interchanged.

[Embodiment 6]
In addition to the configuration in which the setting unit is shared as in the fifth embodiment, an individual setting switch 290 and an individual display unit 292 may be provided for each head unit. FIG. 27 shows a front view of controller unit 210 of the ultraviolet irradiation apparatus according to Embodiment 6 of the present invention. The individual setting switch 290 shown in this figure is used for setting the ultraviolet output irradiated from each head unit and increasing / decreasing the irradiation time, and an up / down switch or the like can be used. In this embodiment, the ultraviolet irradiation conditions for each channel can be set by the individual setting switch 290, and the ultraviolet irradiation conditions can also be set by using the operation panel 244. In addition, the common operation panel can be omitted, and the setting can be made only with the individual setting switch 290.

  The individual display unit 292 can use a 7-segment display or the like, and displays the set output and irradiation time. Further, only the individual setting switch 290 or only the individual display unit 292 may be provided for each channel.

[Embodiment 7]
Further, the individual setting switch and the individual irradiation switch for adjusting the ultraviolet output of each head unit can be provided in the head unit 120 instead of the controller unit 110. 28 to 29 show a head portion 320 of the ultraviolet irradiation apparatus according to Embodiment 7 of the present invention. As shown in these drawings, the head unit 320 is provided with an individual irradiation switch 380 for turning on / off ultraviolet irradiation from the UVLED 350 and an individual setting switch 390 for adjusting the output level of ultraviolet rays. The individual setting switch 390 can use an up / down switch composed of two push switches. As shown in FIGS. 28B and 29, these switches are mounted on a substrate. Other members can use the same configuration as that of FIG. This configuration allows the user to adjust the output by hand when the user holds and uses the head unit 320 by hand, and can be suitably used in such a mode.

  Although not shown, individual display units such as a 7-segment display can be provided in the head unit. Alternatively, only the individual setting switch or the individual irradiation switch may be provided in the head portion, and the remaining members may be provided on the controller portion side.

[Embodiment 8]
In each of the above-described embodiments, a mode (straight type) in which the irradiation direction of the cable portion and the ultraviolet ray is substantially linear along the longitudinal direction of the head portion. On the other hand, the head portion 420 of the ultraviolet irradiation apparatus according to the eighth embodiment of the present invention shown in FIG. 30 has an angle shape in which the irradiation direction of the ultraviolet rays from the UVLED 450 is substantially orthogonal to the longitudinal direction of the head portion 420. Of type. 30 is a plan view and a cross-sectional view of the head portion 420, and FIG. 31 is a perspective view showing an example of a method for supporting the head portion 420. As shown in these drawings, the head main body 422 and the lens holder 426 are coupled in an angle shape via a cooling block 424 to form an angle-shaped head portion 420.

  As shown in FIG. 31, in the angle type head unit 420 of the eighth embodiment, a holder 4202 that holds the head main body unit 422 is provided, so that the head unit 420 can be fixed. In this case, there is room in the space above the head portion 420. That is, it is suitable when it is difficult to secure a sufficient space above the head part 420 due to the equipment when fixing the head part 420 to the equipment. Moreover, it is excellent in visibility when observing an object (location) to be irradiated with ultraviolet rays through the head part 420 from above.

  On the other hand, FIG. 32 shows an example of a method of supporting the straight type head unit 120 in the above-described fifth to third embodiments. In the example of FIG. 32A, the head unit 120 is fixed by gripping the pole member 1201 fixed to the back surface of the head main body unit 122 at a substantially right angle by the holder 1202. In the example of FIG. 32 (b), the fixing target 120 such as a wall surface is directly screwed with the fixing screw 1203 using two screw holes formed on the back surface of the head main body 122. In either case, a space for the cable portion 130 is required above the head portion 120. In the case of the angle type head portion 120 of the eighth embodiment shown in FIGS. 30 and 31, the cable portion 130 extends to the side, so that no problem occurs even if there is no allowance in the space above the head portion 420.

[Embodiment 9]
In each of the above embodiments, each head unit includes one UVLED as shown in FIG. However, a plurality of semiconductor elements can be provided in the head portion 520. By using a plurality of semiconductor elements, it is possible to adjust the irradiation amount and irradiation area of ultraviolet rays as necessary. FIG. 33 shows a head unit 520 including a plurality of UVLEDs 550 as an ultraviolet irradiation device according to the ninth embodiment of the present invention. FIG. 33 (a) shows an example in which twelve UVLEDs 550A are arranged substantially uniformly on the bottom surface of a cylindrical cooling block. FIG. 33B shows an example in which 3 rows × 3 columns = 9 UV LEDs 550B are arranged in a substantially square cooling block. Of course, the UVLEDs 550 may be arranged in one or two rows, or in four or more rows. FIG. 33C shows an example in which 2 rows × 3 columns = 6 UV LEDs 550C are arranged in a substantially rectangular cooling block extending in one direction. In the structure of this example, a plurality of UV LEDs 550C arranged in the longitudinal direction can be cured by irradiating the resin applied to the elongated region with ultraviolet rays at a time.

  Of course, the number of UVLEDs, the arrangement pattern, and other than these can be used as appropriate. By simultaneously turning on and using a plurality of UVLEDs, the amount of ultraviolet rays can be increased and the output can be increased. In addition, by turning on only specific UVLEDs among other UVLEDs, turning off other UVLEDs, and alternately switching the operating UVLEDs, long life of each element is avoided by avoiding continuous use of specific UVLEDs. The replacement time of the UVLED can be extended.

  Further, not only when a plurality of UVLEDs having the same characteristics are provided, UVLEDs having different characteristics may be provided in the same head portion. For example, by switching and using UVLEDs having different wavelengths, the wavelength of ultraviolet rays that can be irradiated from the same head unit can be changed. When UVLEDs having different characteristics are used, a drive current or the like corresponding to each UVLED is set in advance on the head unit side. Furthermore, it goes without saying that UVLEDs having different characteristics between the head portions can be provided in each head portion.

  In the case where a plurality of semiconductor elements are provided in the head portion 520, it is necessary to distinguish the elements to be turned on from others, and therefore element identification information such as individual ID numbers is assigned to each semiconductor element. When setting the ultraviolet irradiation condition, element identification information indicating which element is turned on is also set. When a plurality of semiconductor elements are turned on, the settings may be copied so that the same settings can be easily made on the semiconductor elements. When all the elements are turned on, “all” can be designated as the element identification information. For example, “A” is input on the setting screen. Thereby, the trouble of setting the same ultraviolet irradiation condition for each element can be saved. Needless to say, it is also possible to irradiate ultraviolet rays by changing the current value with a plurality of semiconductor elements.

  Next, an ultraviolet irradiation condition setting method when the head unit 520 includes a plurality of UV LEDs 550 will be described with reference to FIG. In FIG. 34, the head portion 520 number selection step in step 2401 and the step number selection step in step 2402 are the same as steps 1001 and 1002 in FIG. 20 described above. Next, in step 2402-1, the number of the UVLED 550 to be operated is selected. The plurality of UVLEDs 550 provided in the head unit 520 are assigned a unique ID number in advance as described above, and the number of the UVLED 550 to be driven is selected. The following steps are the same as steps 1003, 1004, and 1005 in FIG.

[Embodiment 10]
In addition, the setting of the ultraviolet irradiation conditions can be performed by selecting a preset irradiation pattern in addition to the method of designating a set of irradiation time and irradiation output as described above. For example, a method of selecting a functional irradiation pattern or a constant of the selected function can be input. For these settings, in addition to a method of specifying and selecting function numbers and constants numerically, a method of graphically displaying and selecting a graph figure can be adopted. Further, in the former selection method using numerical values, the set function may be confirmed by a graph figure. In order to enable such graph display, a display unit 142 capable of graphic display is prepared.

[Functional irradiation pattern]
FIG. 35 is a graph showing an example showing three patterns for displaying ultraviolet irradiation time and irradiation output as a function. Even in the pattern shown in this figure, the embodiment of the present invention can irradiate ultraviolet rays. In the example of FIG. 35, three types F1 to F3 are shown as examples of functions.

F1: P = at + c
F2: P = a * (1-EXP (−b * t)) + c
F3: P = a * (EXP (b * t) -1) + c
(A, b, c are constants set according to conditions)

  In addition to these, an n-order function can also be used. After selecting one of the above functions, the irradiation pattern is determined by setting constants a, b, and c. The constant is set according to the usage conditions of the ultraviolet irradiation device. In the functions F1 to F3 illustrated in FIG. 35, the following values are set as constants set when the irradiation output of ultraviolet rays is increased to 70% in an irradiation time of 10 seconds.

F1: P = 7t (a = 7, c = 0)
F2: P = 70 * (1-EXP (−0.5 * t)) (a = 70, b = 0.5, c = 0)
F3: P = 10 * (EXP (0.21 * t) -1) (a = 10, b = 0.21, c = 0)

  The procedure for setting the ultraviolet irradiation conditions with the irradiation pattern as shown in FIG. 35 will be described with reference to FIG. First, the head number is selected in step 2601 and the step number is selected in step 2602 is the same as in FIG. Next, in step 2602-1, a function number is selected. Here, as the options of the function F, the above-described F0 to F3 can be selected. Note that F = 0 is a step-like function for inputting the irradiation time and the irradiation output in the same manner as described above. If F = 0 is selected in step 2602-1, the irradiation time is input in step 2603, the irradiation output is input in step 2604, and the setting is stored in step 2605. If F = 1 is selected in step 2602-1, constant a is input in step 2603-1, constant b is input in step 2604-1, and settings are saved in step 2605. If F = 2 or 3 is selected in step 2602-1, constant a is input in step 2603-2, constants b and c are input in step 2604-2, and settings are saved in step 2605.

  In addition to the above, as a method of setting the irradiation pattern, for example, after selecting the irradiation pattern waveform, input the irradiation time and automatically calculate and set the function constant, and the total irradiation amount and heat amount of ultraviolet rays The method of setting in can be used as appropriate.

  In the conventional ultraviolet irradiation device, since the output is changed by passing a mechanical shutter to a high-pressure mercury lamp or the like used as an ultraviolet ray source, the minimum resolution of the ultraviolet output becomes coarse and becomes a discrete change for fine adjustment. It was impossible to change the output along the waveform pattern. On the other hand, according to the present embodiment using a semiconductor element having a high linearity with respect to the drive current, an almost continuous output change is realized by adjusting the input current. Since the output can be changed with good linearity in accordance with the drive current, it is possible to deal with the pattern as described above. Needless to say, the approximation between the ultraviolet output and the continuous waveform depends on the resolution of the A / D converter.

[Embodiment 11]
In each of the above embodiments, the setting of the ultraviolet irradiation condition is performed by the setting unit of the controller unit. However, the setting of ultraviolet irradiation conditions can also be performed by a device externally connected to the ultraviolet irradiation apparatus. For example, as Embodiment 11 of the present invention, as shown in FIG. 37, the controller unit 710 of the ultraviolet irradiation apparatus 700 is connected to an external connection device 7101 such as a computer or PLC, and the ultraviolet irradiation set on the external connection device 7101 side. Settings are made by transferring the conditions to the controller unit 710.

  The ultraviolet irradiation device 700 includes an interface for connecting to the external connection device 7101. The interface is connected to the control unit 714 of the controller unit 710, and the control unit 714 exchanges electrical signals with the external connection device 7101 and performs data communication. The connection between the external connection device 7101 and the ultraviolet irradiation device 700 is via a serial connection such as RS-232x, RS-422, USB or IEEE1394, a parallel connection, or a network such as 10BASE-T, 100BASE-TX, 1000BASE-T. Can be connected electrically to communicate. The connection is not limited to a physical connection using a wire, but may be a wireless connection using a wireless LAN such as IEEE 802.1x or OFDM, radio waves such as Bluetooth, infrared rays, optical communication, or the like. Furthermore, setting information can be stored and read via a recording medium. As the recording medium, a memory card, magnetic disk, optical disk, magneto-optical disk, semiconductor memory, or the like can be used.

  The ultraviolet irradiation device of the present invention can be suitably used for bonding with an ultraviolet curable resin in an assembly operation of an electronic component such as a pickup. In particular, since ultraviolet irradiation conditions can be set independently for each head unit that radiates ultraviolet rays, for example, a plurality of users can use the head unit connected to the same ultraviolet irradiation device, or ultraviolet curing resins having different curing times. Adhesion using can be performed with the same ultraviolet irradiation device.

It is a block diagram of the ultraviolet irradiation device concerning Embodiment 1 of the present invention. It is the schematic which shows the head part of the ultraviolet irradiation device which concerns on Embodiment 1 of this invention. It is the schematic which shows the head part of the ultraviolet irradiation device which concerns on Embodiment 2 of this invention. It is the schematic which shows the head part of the ultraviolet irradiation device which concerns on Embodiment 3 of this invention. It is a wave form diagram which shows an example of the pattern of the pulse sent to an identification part. It is the schematic which shows the head part of the ultraviolet irradiation device which concerns on Embodiment 4 of this invention. It is the schematic which shows the head part of the ultraviolet irradiation device which concerns on Embodiment 5 of this invention. FIG. 3 is a block diagram illustrating a drive circuit that drives an identification unit in the head unit illustrated in FIG. 2. It is a block diagram which shows the drive circuit which drives an identification part in the head part shown in FIG. It is a block diagram which shows the drive circuit which drives an identification part in the head part shown in FIG. It is a block diagram which shows the drive circuit which drives an identification part in the other structure of the head part shown in FIG. It is the front view and sectional drawing which show the detail of the head part of the ultraviolet irradiation device which concerns on Embodiment 5 of this invention. It is the disassembled perspective view which looked at the head part of the ultraviolet irradiation device concerning Embodiment 5 from the upper part. It is the disassembled perspective view which looked at the head part of the ultraviolet irradiation device concerning Embodiment 5 from the lower part. It is a perspective view which shows the state which connected the connector of FIG. It is a figure which shows a mode that UVLED is contact | adhered and fixed to the front end surface of a cooling block. It is an exploded view showing an example of the lens holder and its internal structure. It is a figure which shows the example of the fixing method of a cooling block and a lens holder. It is a front view which shows the example of arrangement | positioning of the display part and setting part which were provided in the front panel of the controller part. It is a flowchart which shows the setting method of the ultraviolet irradiation condition which concerns on Embodiment 5 of this invention. It is a graph which shows a mode that the irradiation pattern of an ultraviolet-ray changes in step shape. It is a flowchart which shows the setting method of the ultraviolet irradiation condition of FIG. 20 in detail. It is a state transition diagram which shows an example of the hierarchy menu used for an ultraviolet irradiation device. It is a state transition diagram which shows an example of the hierarchy menu in irradiation mode. It is a state transition diagram which shows an example of the hierarchy menu in setting mode. It is a state transition diagram which shows the detail of the setting edit menu in setting mode. It is a front view of the controller part of the ultraviolet irradiation device concerning Embodiment 6 of the present invention. It is the front view and sectional drawing which show the head part of the ultraviolet irradiation device which concerns on Embodiment 7 of this invention. It is a disassembled perspective view which shows the head part of FIG. It is the top view and side surface sectional view which show the head part of the ultraviolet irradiation device which concerns on Embodiment 8 of this invention. It is a perspective view which shows the head part of FIG. It is a perspective view which shows the example of the support method of the head part in Embodiment 5-7 of this invention. It is a bottom view which shows the head part of the ultraviolet irradiation device which concerns on Embodiment 9 of this invention. It is a flowchart which shows the setting method of the ultraviolet irradiation condition in the ultraviolet irradiation device which concerns on Embodiment 9 of this invention. It is a graph which shows the irradiation pattern of the ultraviolet ray made into the function form in the setting method of the ultraviolet irradiation condition which concerns on Embodiment 10 of this invention. It is a flowchart which shows the procedure which sets the ultraviolet irradiation condition which concerns on Embodiment 10 of this invention. It is a block diagram of the ultraviolet irradiation device concerning Embodiment 11 of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100, 700 ... Ultraviolet irradiation apparatus 110,110D-E, 210,710 ... Controller part 112 ... Power supply part 1121 ... Constant current circuit 114, 114D-E, 714 ... Control part 116 ... Memory | storage part 118, 118D ... Drive circuit 119 ... D / A converters 120, 120A to E, 320, 420, 520 ... Head units 121, 121A to 121E ... Identification units 1211, 1211A to C ... Lighting unit 1212 ... Identification information display unit 1201 ... Pole members 1202, 4202 ... Holder 1203 ... Fixing screw 1204 ... Serial / parallel converter 1206 ... Head side drive circuit 122, 422 ... Head main body 1221 ... Upper case member 1222 ... Lower case member 1223 ... Base end member 1224 ... Substrate 1225 ... Cable connector 1226 ... Indicator LED
1227: Memory unit 1228 ... Adjustment circuit 1229 ... Fixing screw 1230 ... Fixing screw 1231 ... Connection connector 1232 ... Through hole 124, 424 ... Cooling block 1241 ... Fixing screw 1242 ... Fixing screw 1243 ... Protruding part 1244 ... Connection connector 1245 ... Protection plates 126, 426 ... Lens holder 1261 ... Optical system lens 1261A ... First lens 1261B ... First lens 1262 ... Spacer 1263 ... Lens fixing cap 130, 130D-E ... Cable part 140 ... Setting part 142 ... Display part 144, 244 ... Operation panels 144A, 144B, 144C, 144D ... <,>, ∧, ∨ switch 144E ... Escape switch 144F ... Enter switch 145 ... Channel display lamp 146 ... UV irradiation lamp 147 ... Power switch 148 ... Batch irradiation switch 150, 150E, 350, 450, 550, 550A to C ... UVLED
160 ... Head unit connector 170 ... Individual irradiation lamp 180, 380 ... Individual irradiation switch 290, 390 ... Individual setting switch 292 ... Individual display unit 7101 ... External connection device U ... Ultraviolet ray H ... Fixed object

Claims (19)

An ultraviolet irradiation device for irradiating ultraviolet rays capable of curing an ultraviolet curable resin,
A plurality of head portions (120) including an ultraviolet ray source that is one or more semiconductor elements capable of irradiating ultraviolet rays;
A plurality of head portion connecting portions (160) each connectable to the plurality of head portions (120);
A control unit (114) for controlling ON / OFF of an ultraviolet ray source of the head unit (120);
A power supply unit (112) for supplying a driving current to the ultraviolet ray source controlled by the control unit (114) via the head unit connection unit (160);
A controller unit (110) comprising:
A cable part (130) comprising an electric signal line for electrically connecting the head part (120) and the controller part (110);
With
The controller unit (110) further includes a terminal block substrate having a terminal block to which an external control device is connected, and the ultraviolet irradiation apparatus can be individually operated for each head unit by the external connection device. And
The ultraviolet irradiation apparatus, wherein the head unit (120) includes an adjustment circuit (1228) for adjusting a drive current of the ultraviolet ray source . The ultraviolet irradiation device according to claim 1 ,
The ultraviolet irradiation apparatus, wherein the adjustment circuit (1228) includes a semi-fixed resistor. The ultraviolet irradiation device according to claim 2 ,
The ultraviolet irradiation apparatus according to claim 1, wherein the head portion (120) is formed with a small hole at a position where the semi-fixed resistance built in the head portion (120) can be adjusted. The ultraviolet irradiation device according to any one of claims 1 to 3 ,
The ultraviolet irradiation apparatus, wherein the head unit (120) includes an indicator for displaying an ON / OFF state of ultraviolet irradiation of each head unit. The ultraviolet irradiation device according to claim 4 ,
An ultraviolet irradiation apparatus, wherein the semiconductor element is an ultraviolet light emitting diode (150). A head portion (120) including an ultraviolet light emitting diode as an ultraviolet ray source;
An ultraviolet irradiation device comprising a controller unit (110) capable of connecting a plurality of the head units (120),
The controller unit (110)
A setting unit (140) capable of controlling the ON / OFF timing of ultraviolet irradiation of the head unit (120) to be connected;
With an interface that can input the UV irradiation ON / OFF timing for each head unit from an external connection device,
The ultraviolet ray irradiation ON / OFF timing can be individually set for each head unit by either the setting unit (140) or the interface ,
The ultraviolet irradiating apparatus, wherein the setting unit (140) of the controller unit (110) can further set an ultraviolet irradiation time of the head unit (120). The ultraviolet irradiation device according to claim 6 ,
The setting unit (140) of the controller unit (110) has an irradiation switch for manually controlling ON / OFF timing of ultraviolet irradiation of the head unit (120) to be connected. The ultraviolet irradiation device according to claim 7 ,
A foot switch can be connected to the interface provided in the controller unit (110), and the foot switch can be used as an irradiation switch for controlling the ON / OFF timing of ultraviolet irradiation of the head unit (120). An ultraviolet irradiation device characterized by comprising: The ultraviolet irradiation device according to claim 7 or 8 ,
An ultraviolet irradiation apparatus characterized in that the ON timing of ultraviolet irradiation can be individually set for each head unit by either the setting unit (140) or the interface . The ultraviolet irradiation device according to any one of claims 7 to 9 ,
The setting unit (140) of the controller unit (110) can further set the intensity of the ultraviolet irradiation output of the head unit (120).   The ultraviolet irradiation device according to claim 10,
  The setting unit (140) of the controller unit (110) further includes an irradiation condition input means for inputting an irradiation time of ultraviolet rays and an intensity of irradiation output corresponding to the irradiation time, and an irradiation set by the irradiation condition input means. An ultraviolet irradiation apparatus comprising: a head selecting unit that selects a head unit (120) for setting conditions.   The ultraviolet irradiation device according to claim 10 or 11,
  The ultraviolet irradiation apparatus, wherein the setting unit (140) is configured to be capable of setting a plurality of steps including a combination of a fixed irradiation output and an irradiation time corresponding to the irradiation output as one ultraviolet irradiation condition. .   A head portion (120) including an ultraviolet light emitting diode as an ultraviolet ray source;
  A controller unit (110) capable of connecting a plurality of the head units (120);
An ultraviolet irradiation device comprising:
  The controller unit (110)
    A setting unit (140) capable of controlling ON / OFF timing of ultraviolet irradiation for a plurality of channels to which a plurality of head units are connected, and
    An interface that can input the UV irradiation ON / OFF timing for each channel from an external device.
Have
  The UV irradiation ON / OFF timing can be individually set for each channel by either the setting unit (140) or the interface.
  The setting unit (140) of the controller unit (110) can further set the UV irradiation time of the channel.   The ultraviolet irradiation device according to claim 13,
  The setting unit (140) of the controller unit (110) has an irradiation switch for manually controlling the ON / OFF timing of the ultraviolet irradiation of the channel.   The ultraviolet irradiation device according to claim 14,
  A foot switch can be connected to the interface provided in the controller unit (110), and the foot switch can be used as an irradiation switch for controlling the ON / OFF timing of ultraviolet irradiation of the channel. Ultraviolet irradiation device characterized by.   The ultraviolet irradiation device according to claim 14 or 15,
  An ultraviolet irradiation apparatus characterized in that the ON timing of ultraviolet irradiation can be individually set for each channel by either the setting unit (140) or the interface.   The ultraviolet irradiation device according to any one of claims 14 to 16,
  The setting unit (140) of the controller unit (110) can further set the intensity of the UV irradiation output of the channel.   The ultraviolet irradiation device according to claim 17,
  The setting unit (140) of the controller unit (110) further includes an irradiation condition input means for inputting an irradiation time of ultraviolet rays and an intensity of irradiation output corresponding to the irradiation time, and an irradiation set by the irradiation condition input means. An ultraviolet irradiation apparatus comprising channel selection means for selecting a channel for setting conditions.   The ultraviolet irradiation device according to claim 17 or 18,
  The ultraviolet irradiation apparatus, wherein the setting unit (140) is configured to be capable of setting a plurality of steps including a combination of a fixed irradiation output and an irradiation time corresponding to the irradiation output as one ultraviolet irradiation condition. .