KR200450511Y1 - Light brightness controllable illuminator having disposable or reusable light probe structure - Google Patents

Abstract

The present invention relates to a luminaire having a disposable or multi-use light probe structure, the luminaire according to the present invention includes a main body for generating an optical signal or light for light generation having control circuits for controlling the generation of light; And a light probe having a structure in which at least one LED and a probe having a predetermined length are coupled, wherein the light probe is connected to the main body to connect the optical signal or light provided from the main body to an end of the light probe. By transmitting to the at least one LED, it is characterized in that it has a material that is easy to bend or bend as a structure for irradiating light to a specific portion. According to the present invention, the brightness can be easily adjusted, there is an advantage that can be illuminated in a narrow area. In addition, it is possible to improve the light efficiency and uniform illumination.

Medical device, brightness, lighting, light probe, PWM, disposable

Description

Light brightness controllable illuminator having disposable or reusable light probe structure}

The present invention relates to a brightness adjustable luminaire having a disposable or multi-use light probe structure, more specifically, to the medical device regardless of the structure or shape of the medical device including an industrial device or a dental treatment device The present invention relates to a brightness adjustable luminaire having a disposable or multi-use light probe structure.

You are in the area where you need a light fixture. In particular, when the treatment or work in the lighting blind spot where there is no light or the illumination is not well equipped, separate lighting is required.

In particular, when separate lighting is required in the field of treating or performing work using two hands at the same time, a different type of luminaire is required.

In general, a luminaire having a headlamp type structure that can be mounted on the head or a structure that can be mounted on glasses is used. Headlamp-shaped luminaires can be attached to a head band, hat or helmet, and are therefore widely used for mining, medical, and especially surgical operations. Headlamp-type luminaires have the advantage of illuminating the exact range actually seen by the person wearing them without the need for a fixed floodlight or a portable lamp.

When such a lighting device is used in the medical field, in particular the case of treating the teeth in the mouth of the patient in the dentist look at the problem as follows.

 In the case of using a headlamp shape or an eyeglass fixing light fixture, even if only the patient's mouth needs lighting, the patient's face may be glare and the patient may feel uncomfortable due to the heat of the illuminator. In other words, it is impossible to illuminate only a narrow area. In addition, there is an inconvenience to move the head in case of changing the lighting area.

In addition, the headlamp type or the fixture of the glasses fixed type has a frustration due to the weight of the lamp, in the case of the glasses fixed type has a problem that the glasses are peeled off due to the weight of the lamp. In addition, such a luminaire is not easy to adjust the brightness can not adequately cope with the need for weak lighting or strong lighting.

Therefore, there is a need for a light fixture that can be used simply and conveniently and whose brightness can be adjusted.

On the other hand, when such lighting equipment is used for medical purposes, it is generally used by sterilization. However, the conventional headlamp or eyeglass fixing fixture has a structure that is difficult to sterilize using a high pressure steam sterilizer that is most widely used in the medical field. Therefore, there is a need for a light fixture that can be easily and conveniently used for sterilization and disinfection.

Accordingly, an object of the present invention is to provide a luminaire capable of adjusting the brightness that can overcome the above-mentioned conventional problems.

Another object of the present invention is to provide a lighting device having a light probe for single use or multiple use.

Still another object of the present invention is to provide a lighting device capable of illuminating a narrow area.

Still another object of the present invention is to provide a lighting device that is easily removable to a medical device or an industrial device.

Another object of the present invention is to provide a luminaire that can easily adjust the brightness.

Still another object of the present invention is to provide a luminaire having a simple and convenient use, and easy to sterilize.

       Another object of the present invention to improve the light efficiency, to provide a light fixture that can be uniformly irradiated light.

According to an embodiment of the present invention for achieving some of the technical problems described above, the lighting device according to the present invention includes a main body for generating an optical signal or light for generating light having control circuits for controlling the generation of light; And a light probe having a structure in which at least one LED and a probe having a predetermined length are coupled, wherein the light probe is connected to the main body to connect the optical signal or light provided from the main body to an end of the light probe. By transmitting to the at least one LED, it is characterized in that it has a material that is easy to bend or bend as a structure for irradiating light to a specific portion.

The at least one LED (LED) may have a circular or polygonal body structure in which the side portion is surrounded by a light shielding film for the straightness of the light.

The light probe may be detachable from the main body, may be sterilized, and may be configured as a disposable having a waterproof function.

The light probe may have a metal or glass optical fiber material having a bellows structure that is easy to bend or bend, and may be provided for multiple times that may be fixed to or detachable from the main body.

The light probe may include at least one fixing tool selected from a band, a velcro shape, and a forceps-type fixing tool to be attached or detached to a medical device or an industrial device including a dental medical device. It can be provided.

The main body includes: a brightness control signal generator which includes a brightness control switch switchable in a plurality of steps, and generates a brightness control signal corresponding to each step; Controls the overall operation of the main body, including power check and various sound effects, and outputs a pulse width modulation (PWM) signal having a duty ratio corresponding to the brightness control signal in response to the brightness control signal. Alternatively, the control unit may be provided as an optical signal.

According to another embodiment of the present invention for achieving some of the above technical problems, the luminaire according to the present invention is provided with a brightness control switch switchable in a plurality of steps, to generate a brightness control signal corresponding to each step A brightness control signal generator; Controls the overall operation of the luminaire, including power check and various effect sounds, and generates a PWM (Pulse Width Modulation) signal having a duty ratio corresponding to the brightness control signal in response to the brightness control signal. A control unit; And a light emitting unit configured to irradiate light whose brightness is adjusted in response to the duty ratio of the PWM signal generated by the controller.

The light emitting unit includes a light probe having a structure in which at least one LED and a probe having a predetermined length are coupled, wherein the light probe is configured to connect the PWM signal provided from the controller to an end of the light probe. By transmitting to the LED of the, it is possible to have a material that is easy to bend or bend as a structure for irradiating light to a specific portion.

The at least one LED may have a circular or polygonal body structure in which side portions are surrounded by a light shielding film for the straightness of light.

The light probe may be detachable from the main body, may be sterilized, and may be configured as a disposable having a waterproof function.

The light probe may have a metal or glass optical fiber material having a bellows structure that is easy to bend or bend, and may be provided for multiple times that may be fixed to or detachable from the main body.

The light probe may have a cable shape, a head lamp shape, or an eyeglass fixing structure.

The light probe may include at least one fixing tool selected from a band, a velcro shape, and a forceps-type fixing tool to be attached or detached to a medical device or an industrial device including a dental medical device. It may be provided.

The light probe may have an electrical connection structure in which the PWM signal is input to the plus terminal (+) of the at least one LED and the negative terminal (-) is grounded.

The light probe may have an electrical connection structure in which a power supply voltage VCC is input to a positive terminal (+) of the at least one LED and a PWM signal is input to a negative terminal (−). .

The light emitting unit includes at least one high speed switching device configured between the negative terminal (-) of the at least one LED and a ground terminal to perform high speed switching in response to the PWM signal for controlling brightness of the at least one LED. In addition, the light probe is a power connection (VCC) is input to the positive terminal (+) of the at least one LED (LED) and the negative terminal (-) is an electrical connection connected to the at least one fast switching element It may have a structure.

The light emitting unit is configured to be configured between a power supply voltage VCC terminal and a positive terminal of the at least one LED to perform high speed switching in response to the PWM signal for controlling brightness of the at least one LED. Further comprising a high speed switching device, the light probe is connected to the positive terminal (+) of the at least one LED (LED) is connected to the at least one high speed switching device, the negative terminal (-) is an electrical connection is grounded It may have a structure.

The fast switching device may be an NMOS transistor that performs the fast switching by receiving the PWM signal through a gate.

The luminaire may further include a display unit which displays the brightness level of the light adjusted by the controller in numerals or other symbols.

According to the present invention, it is easy to replace the light probe with a disposable light probe, and when used in a medical device, it is possible to eliminate the objection to the sterilization of the patient or the objection for multi-use. In addition, even when used with a multi-use light probe has a structure that is convenient to use and easy to sterilize. And, the brightness can be easily adjusted, there is an advantage that can be illuminated in a narrow area. In addition, there is an advantage in that light efficiency is improved and uniform illumination is possible. Moreover, it has a structure which can be easily attached or detached regardless of the structure or shape of a medical device or industrial apparatus.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings without any intention other than to provide a thorough understanding of the present invention to those skilled in the art.

1 illustrates the structure of a lighting device according to an embodiment of the present invention.

As shown in FIG. 1, a lighting device according to an embodiment of the present invention includes a main body 300 and a disposable light probe 400.

The main body 200 has control circuits for controlling the generation of light therein to generate an optical signal or light for light generation.

The main body 200 displays a switch 122 for generating the light or an optical signal or adjusting brightness, a switch (not shown) for controlling on / off of a power source, and an operation state of the main body 300. It may have a structure having a display unit 170.

The light probe 400 may have a structure in which at least one LED (140) and a probe 240 of a predetermined length are combined. The light probe 400 is connected to the main body 300 and the at least one LED 140 provided to connect the optical signal or light provided from the main body 300 to the end of the light probe 400. By transmitting to, it may have a structure for irradiating light to a specific portion.

The at least one LED 140 may have a circular or polygonal body structure in which a side portion is surrounded by a light shielding film and the irradiation surface of the light has a planar shape for straightness of light. However, depending on the configuration of the main body 300 or the type of light or optical signal generated in the main body 300, the at least one LED 140 may be replaced with other light emitting means.

The probe 240 constituting the light probe 400 has a material that is easy to bend or bend, and the light probe 400 is detachable from the main body 300 and is disposable and sterilized. It may be configured as. In addition, when the light probe 400 is used in a hospital or other places, the light probe 400 may be used in a mouth or other water present portion, and thus should have a waterproof function.

In order to have a structure in which the light probe 400 or the probe 240 is easily bent or bent, as an example, an outer tube may be provided for waterproofing at a portion where the LED 140 and the probe 240 are connected to each other. In the case of being covered, if the wire bends well in the outer tube, the bending effect may be fixed at the position as it is bent when the part is bent, which can be easily bent. Alternatively, the probe 240 itself may have a material that is easily bent, or may have a structure to cover the outer surface of the material that is easily bent on the probe 240.

Since the light probe 400 is disposable, the light probe 400 may be replaced with a new light probe 400 to be connected to the main body 300.

As another example, the light probe 400 may be connected to the main body 300 through a separate connection probe 210 connected to the main body 300. In this case, the light probe 400 and the connection probe 210 may be connected to each other so as to be interchangeable through a pair of connectors 220 and 230. The light probe 400 is disposable, and once used, the light probe 400 may be replaced, and the new light probe 400 may be replaced by connecting the new light probe 400 to the connection probe 210 again. Therefore, the connection probe 210 should be durable as a material that can be used semi-permanently, but the light probe 400 is a disposable material, which is sufficient as a material having a degree of durability suitable for use once. When the light probe 400 is used in a hospital, however, the light probe 400 may be used in a part of the mouth or other water present and thus have a waterproof function.

Regardless of whether the structure is connected to the main body 300 or directly connected to the main body 300 through the connection probe 210, the light probe 400 is a high-pressure steam using a high pressure steam sterilizer which is most prevalent in medical sites. There is no need to be configured to withstand sterilization, but there is a need to have a material and structure capable of sterilization. Because the light probe 400 is used for one-time use, since it is based on the pre-sterilization packaging and is supplied to the consumer during production, such as a disposable syringe used in a medical field, a separate dedicated sterilizer or other various sterilizers This is because sterilization is possible.

When the light probe 400 is used together with a medical device or an industrial device including a dental medical device, in order to attach or detach the light probe 400 to or from the device, a band type, velcro At least one fixing tool 250 selected from among fixing tools of a shape and a forceps shape may be provided in the light probe 400. The fixing mechanism 250 may be any type as long as it has a structure that can be easily attached and detached from other mechanisms. The fixing mechanism 250 may be provided to facilitate the diagnosis or procedure while illuminating the affected part when attached to the medical device.

For example, when attached to a dental treatment device, only the treatment area of the tooth that needs treatment can be focused and the lighting can be naturally moved according to the movement of the treatment device. In addition, it is possible to combine with various sites other than a specific site of the treatment device.

In the conventional case, when attached to a specific product, it is configured in such a way as to be manufactured in advance to match the shape of the product, there is a disadvantage that can be used only for a specific product, but the light probe 400 of the lighting fixture according to the present invention is attached Regardless of the structure or shape of the product (medical device or industrial device) to be used, there is an advantage in that the fixing device 250 or the like can be easily attached and used to a specific site.

Figure 2 shows the structure of a lighting device according to another embodiment of the present invention.

As shown in FIG. 2, a luminaire according to another embodiment of the present invention includes a light probe 410 that can be used multiple times with the main body 300.

The structure or operation of the main body 200 is the same as described with reference to FIG.

The light probe 400 may have a structure in which at least one LED 140 and a predetermined length of the probe 244 are combined. The light probe 410 is connected to the main body 300 and the at least one LED 140 is provided to connect the optical signal or light provided from the main body 300 to the end of the light probe 410 By transmitting to, it may have a structure for irradiating light to a specific portion.

The at least one LED 140 may have a body structure of a circular or polygonal shape in which the side portion is surrounded by a light shielding film for the straightness of the light. However, depending on the configuration of the main body 300 or the type of light or optical signal generated in the main body 300, the at least one LED 140 may be replaced with other light emitting means.

The light probe 410 may have a metal material having a bellows structure that is easily bent or bent. Or it may have a glass optical fiber material. Since the light probe 410 can be used for multiple times, when sterilization is required in medical or other industrial sites, the light probe 410 must be sterilized directly in the field. Therefore, at least a material suitable for sterilization of a high pressure steam sterilizer, which is widely used in medical or other industrial sites, that is, it must have a structure capable of withstanding high pressure steam.

The light probe 410 may have an integrated structure fixedly attached to the main body 300. However, it may have a structure detachable from the main body 300 for replacement when the end of life or ease of sterilization. When the light probe 410 is used in a hospital or other place, the light probe 410 may have a waterproof function since it may be used in a mouth or other water present site.

When the light probe 410 is used together with a medical device or an industrial device including a dental medical device, the light probe 410 may be band-shaped or velcro-shaped in order to detach or fix the light probe 410 to the device. At least one fixing tool 250 selected from among fixing tools having a tong shape may be provided in the light probe 410. The fixing mechanism 250 may be any type as long as it has a structure that can be easily attached and detached from other mechanisms. The fixing mechanism 250 may be provided to facilitate the diagnosis or procedure while illuminating the affected part when attached to the medical device.

For example, when attached to a dental treatment device, only the treatment area of the tooth that needs treatment can be focused and the lighting can be naturally moved according to the movement of the treatment device. In addition, it is possible to combine with various sites other than a specific site of the treatment device.

In the conventional case, when attaching to a specific product, since it is configured in a manner such as made in advance to match the shape of the product, there is a disadvantage that can be used only for a specific product, but the light probe 410 of the lighting fixture according to the present invention is attached Regardless of the structure or shape of the product (medical device or industrial device) to be used, there is an advantage that it is possible to easily attach and use the specific part by using the fixing device 250 or the like.

Figure 3 shows an internal block diagram of the luminaire according to the embodiment of the present invention of Figures 1 and 2.

As shown in FIG. 3, the lighting device 100 according to the embodiment of the present invention includes a brightness control signal generator 120, a controller 110, and a light emitter 130. Incidentally, the display unit 170, the sound effect generator 150, and the power check unit 160 may be further provided.

The brightness control signal generator 120 includes a brightness control switch switchable in a plurality of steps, and generates a brightness control signal KEY_INPUT corresponding to each step. The brightness control switch may be a rotary switch (122 of FIG. 1) which can adjust brightness by stages by rotation. The brightness control switch may be switched in such a manner as to rotate by a predetermined angle unit in each step.

For example, assume that the brightness control switch has five levels of brightness adjustment, and the brightness increases as the level increases. In this case, when the brightness control switch is turned to the first step in the off state, a number '01' is displayed on the display unit 170, and the brightness control signal generator 120 displays the first number. The brightness control signal KEY_INPUT corresponding to the step is generated. In this case, the sound effect generator 150 may generate the sound effect corresponding to the first step (for example, 'short' once).

Next, when the brightness control switch is rotated in the second step, the number '02' is displayed on the display unit 170, and the brightness control signal generator 120 displays the brightness control signal corresponding to the second step. (KEY_INPUT) is generated. In this case, the sound effect generator 150 may generate the sound effect corresponding to the second step (eg, '삑 삑').

In this manner, brightness control signals KEY_INPUT corresponding to the first to fifth steps are generated.

The brightness control signal KEY_INPUT is applied to the controller 110, and the controller 110 generates a pulse width modulation (PWM) signal having a duty ratio corresponding to the brightness control signal KEY_INPUT. Done.

Here, the duty ratio of the PWM signal in each step should be constant, and the duty ratio may be defined as the ratio of maintaining the high level of the entire time of the PWM signal. In other words, it may be defined as the ratio of time at which the high level is maintained within one cycle time (or the ratio of the width of the high level to the total width of the low level and the high level). On the other hand, the duty ratio may be defined as a time ratio at which the low level is maintained within one cycle time, but in order to prevent confusion with the foregoing case, the duty ratio is one cycle time here. It is defined as the percentage of time that a high level is maintained within.

The brightness control switch, as well as the rotary switch may be used a variety of switches.

The brightness control signal KEY_INPUT generated by the brightness control signal generator 120 may be generated as a binary digital signal or may be generated as an analog signal of various types.

In this case, when the brightness control switch is in the off state, the brightness control signal generator 120 may output a signal indicating the off state to the controller 110. In this case, in response to the signal indicating the off state, the control unit 110 may reduce power consumption by completely shutting off the power.

In addition, the brightness control switch may have an ON state, so that the power is turned off (blocked) in the off state, and the power is turned on in the on state. In this case, the signal may be used for two signals, such as a brightness control signal of the first stage and a signal indicating an on state, through the switching signal to the first stage without a separate on state.

In another embodiment, a power switch is provided separately to perform power on / off, and the brightness control switch may be configured to be used only for brightness control.

 The controller 110 controls the overall operation of the lighting device, including a power check and various sound effects, and has a duty ratio corresponding to the brightness control signal KEY_INPUT in response to the brightness control signal KEY_INPUT. Generates a PWM signal (PWM_OUT).

The controller 110 may generate the PWM signals PWM_OUT corresponding to the brightness control signal KEY_INPUT for each step through software, that is, a program. Generation of the PWM signals PWM_OUT may be performed by adjusting the duty ratio of the PWM signal having a specific frequency. The method of generating the PWM signal is well known to those skilled in the art to which the present invention belongs, and further description thereof will be omitted. The PWM signal may be generated through a PWM signal generator configured in hardware.

Whether the duty ratio of the PWM signal PWM_OUT increases or decreases as the step increases, may vary depending on the implementation form of the light emitting unit 130. This will be described with reference to FIG. 4.

In the controller 110, when the display unit 170, the effect sound generator 150, and the power check unit 160 are provided, the control signal generator generates a switching signal from the brightness control signal generator 120. By transmitting to 150, it can be controlled to generate a sound effect. In addition, the power check unit 160 is controlled to periodically check the level of the power connected to the luminaire, checks the remaining amount of power (required in the case of a rechargeable type), and supplies the power to the display unit 170. The remaining amount of can be controlled to be displayed.

The light emitter 130 generates light whose brightness is adjusted in response to the duty ratio of the PWM signal PWM_OUT generated by the controller 110.

The light emitting unit 130 includes an LED. In some cases, a high speed switching device may be provided. This will be described in detail with reference to FIG. 4.

The display unit 170 may be configured of various forms of display means, including an LCD form or an LED form. The display unit 170 is controlled by the control unit 110, in the form of numbers or letters so that the user can recognize the brightness level or the state of the lighting device in response to the data signal LCD_DATA applied from the control unit 110. Perform the display with. Alternatively, the display may be performed by adjusting or blinking the brightness of the display means. This may be useful when the remaining power supply is insufficient to indicate when to charge.

The sound effect generation unit 150 is controlled by the control unit 110, may be provided to assist the display unit 170, may be provided for an auditory effect. In response to the effect sound signal BU applied by the controller 110, the effect sound generator 150 may provide various types of sound effects (eg, '신호') corresponding to brightness control signals for each stage and power shortage. , '삑삑', '삑 삑삑', '삑삑 삑삑' beep ~~~ '). For example, when the power is ON, 'beep ~~', and in the case of the first to fifth levels of brightness, '삑', '삑삑', '삑 삑삑', '삑삑 삑삑', ' Sound effects such as 삑삑 삑삑 삑 'may occur.

As another example, when the power is ON, 'beep ~~', and in case of the first to fifth levels of brightness, '삑', '삑삑', '삑 삑삑', 'bee ~~~~' Sound effects such as 'beep ~~~ 삑' may occur.

The power check unit 160 is controlled by the control unit 110, and checks the state of the power supply of the luminaire to provide a check signal BC to the control unit 110. The controller 110 displays the remaining amount of power on the display unit 170 in response to the check signal BC of the power check unit 160. In addition, when a signal indicating that there is no remaining power of the power remaining in the power check unit 160, that is, a check signal BC indicating that charging is necessary, the controller 110 responds to the effect sound generating unit 160 in response thereto. It can be controlled to generate a warning sound through.

  The configuration of the power check unit 160 may be implemented through various circuit configurations well known to those skilled in the art.

In addition, a description will be given of the power supply of the luminaire.

The luminaire may be connected to a fixed power source using an adapter or have a rechargeable structure using a charger. When using an adapter, an input voltage of 6-12V is input through a fixed power supply, and the input voltage (6-12V) is input through a step down converter (for example, 'TPS5420). For example, the voltage lowered to 4.35V) is output to the main switch. In the case of using the charger, a voltage of 3.0-4.2 V level output from the charger IC (for example, LTC4085) from the rechargeable battery is input to the main switch.

In the main switch, when the adapter is used, the voltage output from the adapter is switched, and in the case of the rechargeable battery, the voltage from the rechargeable battery is switched. The voltage output from the main switch is generated as a power supply voltage VCC having a constant voltage level (eg, 3.3V) by a regulator (eg, MIC5205). The power supply voltage VCC is input to the controller 110 and the display unit 170 of the luminaire.

Another example of the power supply device may have a structure in which a fixed battery can be used simultaneously while charging a charging battery using an adapter. For example, the power is supplied through the adapter and the supplied power is supplied for the operation of the charging battery and the luminaire. In this case, the lighting apparatus is used by using a fixed power in a place where a fixed power is provided, and in the place where the fixed power is not provided, or when the fixed power cannot be used, the power can be supplied using the charging battery. There is an advantage to being there.

4 illustrates embodiments of the light emitter 130.

As shown in FIG. 4A, the light emitting unit 130 may include an LED 140a and an NMOS transistor SW1 which is a high speed switching device. The NMOS transistor SW1 may be provided in the form of an IC chip (eg, SI2302). In addition to the NMOS transistor, a variety of devices capable of performing high speed switching may be used.

The LED 140a may include a body 132b having a circular or polygonal shape and a light shielding film 132a surrounding the side surface of the body 132b in order to improve linearity of light emitted from the body 132b. . And the irradiation surface to which light is irradiated has a planar shape.

The LED 140a includes a negative terminal (-) and a positive (+) terminal, a power supply voltage VCC is directly input to the positive terminal (+), and a negative terminal (-) is the high speed switching element SW1. Is connected to the drain / source.

The NMOS transistor SW1 is connected between the negative terminal (−) of the LED and the ground terminal. That is, drain / source is connected to the negative terminal (−) of the LED 140a, the source / drain is grounded, and the PWM signal PWM_OUT is received as a gate to perform fast switching.

When the NMOS transistor SW1 receives a high level signal through its gate, the NMOS transistor SW1 is turned on to maintain a closed state, and the negative value of the LED 140a is maintained. The terminal (-) and the ground terminal are electrically connected. When the low level signal is received, the NMOS transistor SW1 is turned off to maintain an open state and electrically connects the negative terminal (-) and the ground terminal of the LED 140a. To be separated. Therefore, when the low level is applied to the NMOS transistor SW1, the LED 140a is turned off, and when the high level is applied to the NMOS transistor SW1, the LED 140a is turned on.

When a low level is applied to the NMOS transistor SW1, a negative terminal (−) of the LED 140a is in a floating state, so an error may occur in some cases. In this case, a separate circuit may be required to prevent the floating state.

The PWM signal PWM_OUT is a signal in which a high level and a low level are continuously repeated, and is known as a signal in which a width of a high level and a width of a low level change. Therefore, the switching of the NMOS transistor SW1 is repeated according to the high level width or the low level width of the PWM signal PWM_OUT.

In the case of the circuit configuration of FIG. 4A, as the width of the high level of the PWM signal PWM_OUT and the width of the low level are smaller, the LED 140a becomes brighter and the row of the PWM signal PWM_OUT is low. The greater the level width and the smaller the high level width, the darker the LED 140a is. Since the switching of the NMOS transistor SW1 is performed at a high speed, the user cannot detect an unlit state of the LED 140a, and if the width of the high level is simply high, the lit state lasts long and the unlit state is short. It is repeated in a continuous manner so that the user feels bright, and when the width of the low level is large, the unlit state lasts long and the lighting state repeats in a short duration so that the user feels dark.

Therefore, the PWM signal PWM_OUT should have a form in which the duty ratio increases as the brightness level increases from the first level to the higher level. That is, the control unit 110 generates the PWM signal PWM_OUT having the increased duty ratio for each step as the brightness step is switched from the first step to the higher step.

Here, when the duty ratio is defined as a time ratio at which the low level is maintained within one cycle time, the controller 110 changes the duty ratio in each step as the brightness level is switched from the first step to a higher step. The PWM signal PWM_OUT in a reduced form is generated.

As shown in FIG. 4B, the light emitting unit 130 may include an LED 140b and an NMOS transistor SW2 which is a high speed switching device. The NMOS transistor SW2 may be provided in the form of an IC chip (eg, SI2302). In addition to the NMOS transistor, a variety of devices capable of performing high speed switching may be used.

The LED 140b may include a body 132b having a circular or polygonal shape and a light shielding film 132a surrounding the side surface of the body 132b in order to improve linearity of light emitted from the body 132b. . And the irradiation surface to which light is irradiated has a planar shape.

The LED 140b has a negative terminal (-) and a positive (+) terminal, the positive terminal (+) is connected to the drain / source of the NMOS transistor SW2, and the negative terminal (-) is grounded. .

The NMOS transistor SW2 is connected between the positive terminal (+) and the power supply voltage (VCC) terminal of the LED. That is, the drain / source of the NMOS transistor SW2 is connected to the plus terminal (+) of the LED 140b, the source / drain is connected to a power supply voltage terminal, and the gate signal is received to receive the PWM signal PWM_OUT. To perform.

When the NMOS transistor SW2 receives a high level signal through a gate, the NMOS transistor SW2 is turned on to maintain a closed state, and the plus of the LED 140a is maintained. The terminal (+) and the power supply voltage (VCC) terminal are electrically connected. Therefore, a power supply voltage VCC may be applied to the LED 140b. When the low level signal is received, the NMOS transistor SW2 is turned off to maintain an open state, and the plus terminal (+) and the power supply voltage VCC of the LED 140a are maintained. The stages are electrically isolated. Therefore, when the low level is applied to the NMOS transistor SW2, the LED 140b is turned off, and when the high level is applied to the NMOS transistor SW2, the LED 140b is turned on.

When a low level is applied to the NMOS transistor SW2, the plus terminal (+) of the LED 140b is in a floating state, so an error may occur in some cases. In this case, a separate circuit may be required to prevent the floating state.

The PWM signal PWM_OUT is a signal in which the high level and the low level are continuously repeated, and is known as a signal in which the width of the high level and the width of the low level change. Therefore, the switching of the NMOS transistor SW2 is repeated according to the high level width or the low level width of the PWM signal PWM_OUT.

In the case of the circuit configuration shown in FIG. 4B, as the width of the high level of the PWM signal PWM_OUT and the width of the low level are smaller, the LED 140b becomes brighter and the row of the PWM signal PWM_OUT is low. The greater the level width and the smaller the high level width, the darker the LED 140b is. Since the switching of the NMOS transistor SW2 is performed at a high speed, the user cannot detect an unlit state of the LED 140b, and when the width of the high level is simply high, the lit state lasts long and the unlit state is short. It is repeated in a continuous manner, so that the user feels bright, and when the width of the low level is large, the unlit state lasts and the lighting state repeats in a short duration, so the user feels dark.

Therefore, the PWM signal PWM_OUT should have a form in which the duty ratio increases as the brightness level increases from the first level to the higher level. That is, the control unit 110 generates the PWM signal PWM_OUT having the increased duty ratio for each step as the brightness step is switched from the first step to the higher step.

Here, when the duty ratio is defined as a time ratio at which the low level is maintained within one cycle time, the controller 110 changes the duty ratio in each step as the brightness level is switched from the first step to a higher step. The PWM signal PWM_OUT in a reduced form is generated.

As shown in FIGS. 4C and 4D, the light emitting unit 130 may include only the LEDs 140C and 140d without the fast switching devices SW1 and SW2.

As shown in FIG. 4C, the light emitter 130 receives the PWM signal PWM_OUT of the controller 110 to the plus terminal (+), and the negative terminal (−) is connected to the LED 140c. It can be configured as.

In this case, as the width of the high level of the PWM signal PWM_OUT is larger and the width of the low level is smaller, the LED 140c becomes brighter, and the width of the low level of the PWM signal PWM_OUT is higher and higher level. The smaller the width, the darker the LED 140c.

Since the PWM signal PWM_OUT has a high frequency, the user cannot detect an unlit state of the LED 140c, and if the width of the high level is simply high, the lit state lasts long and the unlit state lasts short. The user feels bright because it is repeated in such a way that if the width of the low level is large, the light-off state lasts for a long time and the lighting state is repeated for a short time, so the user feels dark.

Therefore, the PWM signal PWM_OUT should have a form in which the duty ratio increases as the brightness level increases from the first level to the higher level. That is, the control unit 110 generates the PWM signal PWM_OUT having the increased duty ratio for each step as the brightness step is switched from the first step to the higher step.

Here, when the duty ratio is defined as a time ratio at which the low level is maintained within one cycle time, the controller 110 changes the duty ratio in each step as the brightness level is switched from the first step to a higher step. The PWM signal PWM_OUT in a reduced form is generated.

As shown in FIG. 4D, the light emitter 130 receives the PWM signal PWM_OUT of the controller 110 through a negative terminal (−), and the plus terminal (−) is connected to a power supply voltage VCC terminal. It may be composed of the LED (140d) of the structure.

In this case, as the width of the high level of the PWM signal PWM_OUT is larger and the width of the low level is smaller, the LED 140d becomes darker, and the width of the low level of the PWM signal PWM_OUT is larger and higher. The smaller the level width is, the brighter the LED 140d is.

Accordingly, the PWM signal PWM_OUT should have a form in which the duty ratio decreases as the brightness level increases from the first level to the higher level. That is, the control unit 110 generates a PWM signal PWM_OUT in which the duty ratio gradually decreases in each step as the brightness step is switched from the first step to a higher step.

Here, when the duty ratio is defined as a time ratio at which the low level is maintained within one cycle time, the controller 110 changes the duty ratio in each step as the brightness level is switched from the first step to a higher step. The PWM signal PWM_OUT in increasing form is generated.

The internal block diagrams of FIGS. 3 and 4 and the configuration of the light emitting unit match the external view of the luminaire of FIGS. 1 and 2 as follows.

First, the brightness control signal generator 120, the controller 110, the effect sound generator 150, the power checker 160, and the like of the luminaire have a structure embedded in the main body 300. 170 has a structure that is attached to a portion of the main body 300. In addition, the fast switching elements SW1 and SW2 of the light emitting unit 130 may have a configuration embedded in the main body 300.

The at least one LED 140 constituting the light emitting unit 130 forms part of the light probes 400 and 410 connected to the main body 300. The light probes 400 and 410 have a structure in which the at least one LED 140 is connected to the probes 240 and 244 having a predetermined length, but the probes 240 and 244, the connection probe 210, and the connectors 220 and 230 are provided. Is represented as two lines (+,-) connected to the at least one LED 140 on the circuit diagram of FIG.

In addition, the lighting apparatus of FIGS. 3 and 4 may have a structure having the light probes 400 and 410 described with reference to FIGS. 1 and 2, but may be implemented in various types. For example, it may be implemented in the form of a conventional cable or headlamp, eyeglass fixing type.

FIG. 5 illustrates the structure of the LEDs 140a, 140b, 140c, and 140d, collectively referred to as '140' constituting the light emitting unit 130 of FIG.

Figure 5a generally shows the LED of the structure of the body 32 is well known to those of ordinary skill in the art, and Figure 3b shows a helio (helio) led having a structure designed in the present invention will be. Here, the helio LED is a name for distinguishing the conventional LED.

As shown in Figure 5a, LEDs generally known to those of ordinary skill in the art to which the present invention belongs is a circular body (in the form of a cylinder) 32, the irradiation surface of the light is convex in the form of the convex (edge portion) From the convex shape toward the center).

As shown in FIG. 5B, the helio LED includes a body 132b having a circular or polygonal shape, and a light shielding film surrounding the side surface of the body 132b to improve linearity of light emitted from the body 132b. It has a structure provided with 132a. The light blocking film 132a may be used as long as it is a material that blocks light. The light blocking film 132a may be provided at the time of manufacturing the LED, and may have a structure that can be detachably attached thereto. That is, when wide lighting is required, the shielding screen may be removed and used. When narrow lighting is required, the shielding film may be attached.

In some cases, an irradiation surface (a front portion except the side surface) to which light is irradiated from the body 132b has a planar structure. In this case, since the light is irradiated to the front rather than to the side in the case of the conventional round shape, the light efficiency is improved for a specific part or a narrow part, and the irradiation surface is provided in a flat surface so that light is uniformly applied to a specific part or a narrow part. You will be able to investigate.

As described above, the lighting fixture according to the present invention, the brightness can be easily adjusted, there is an advantage that can be illuminated in a narrow area. As a result, the light efficiency can be improved and uniform illumination can be achieved. Moreover, it has a structure which can be easily attached or detached regardless of the type or shape of the medical device or the industrial device. In addition, it is easy to replace the light probe with a disposable light probe, and when used in a medical device, it is possible to eliminate the objection to the sterilization of the patient or the objection for multi-use.

Since the description of the above embodiment is merely an example with reference to the drawings for a more thorough understanding of the present invention, it should not be construed as limiting the present invention. In addition, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the basic principles of the present invention.

1 is a structural diagram of a lighting device according to an embodiment of the present invention,

2 is a structural diagram of a lighting device according to another embodiment of the present invention,

3 is an internal block diagram of a luminaire having the structure of FIGS. 1 and 2,

4 is a configuration diagram illustrating embodiments of the light emitting unit of FIG. 3;

5 is a view showing the structure of the LED implemented in FIG.

* Description of the symbols for the main parts of the drawings *

110 control unit 120 brightness control signal generator

130: light emitting unit 140: LED

150: sound effect generator 160: power supply check unit

170: display unit 300: main body

400,410: Light Probe

Claims (10)

For luminaires: A brightness control signal generation unit having a brightness control switch switchable in a plurality of steps, the brightness control signal generating unit corresponding to each step; Controls the overall operation of the luminaire, including power check and various effect sounds, and generates a PWM (Pulse Width Modulation) signal having a duty ratio corresponding to the brightness control signal in response to the brightness control signal. A main body having a control unit; A connection probe which is semi-permanently usable and connected to the main body to transmit the PWM (Pulse Width Modulation) signal; As a replacement for a single use, the connection probe is replaceably connected to the connector through a connector, and includes a light probe having a structure in which at least one LED and a predetermined length of probe are coupled to each other. The light probe is a material that easily bends or bends as a structure for irradiating light to a specific portion by transmitting the PWM signal provided from the connection probe to the at least one LED connected to an end of the light probe. The at least one LED is a luminaire, characterized in that the side portion is a circular or polygonal body structure surrounded by a light shielding film for the straightness of light. The method according to claim 1, The light probe is sterile sterilization possible, characterized in that having a waterproof function. The method according to claim 1, The light probe is a luminaire, characterized in that having a cable form, headlamp form, or glasses fixed structure. The method according to claim 2 or 3, The light probe may include at least one fixing tool selected from a band, a velcro shape, and a forceps-type fixing tool to be attached or detached to a medical device or an industrial device including a dental medical device. Lighting fixture comprising a. The method according to claim 1, The light probe is a luminaire, characterized in that the PWM terminal is input to the positive terminal (+) of the at least one LED (LED), the negative terminal (-) has an electrical connection structure of the form that is grounded. The method according to claim 1, The light probe has an electrical connection structure in which a power supply voltage VCC is input to a positive terminal (+) of the at least one LED and a PWM signal is input to a negative terminal (−). Lighting fixtures. The method according to claim 1, The main body may include at least one high speed switching configured between the negative terminal (−) of the at least one LED and a ground terminal to perform high speed switching in response to the PWM signal for controlling brightness of the at least one LED. Further provided with elements, The light probe has an electrical connection structure in which a power supply voltage VCC is input to a positive terminal of the at least one LED and a negative terminal is connected to the at least one fast switching element. Lighting fixtures The method according to claim 1, The main body may include at least one configured between a power supply voltage VCC terminal and a positive terminal of the at least one LED to perform high speed switching in response to the PWM signal for controlling brightness of the at least one LED. It further comprises one high speed switching element, The light probe is a luminaire characterized in that the positive terminal (+) of the at least one LED (LED) is connected to the at least one fast switching element, the negative terminal (-) has an electrical connection structure that is grounded The method according to claim 7 or 8, The fast switching device is an luminaire, characterized in that the NMOS transistor for performing the fast switching by receiving the PWM signal to the gate. The method according to claim 1, The luminaire further comprises a display unit for displaying the brightness level of the light adjusted by the control unit by numbers or other symbols.

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