KR102032126B1 - Lighting Device for medical using the Organic Light Emitting Diodes - Google Patents

Abstract

The present invention relates to a medical lighting device using an organic light emitting diode (OLED), comprising a removable front housing 10 and the rear housing 50, a plurality of grips (left and right sides of the front and rear housings 11, 50) 11 and 51 are provided with a main body 60; It is electrically connected to the charging terminal 57 which is installed penetrating inward and outward from one side of the rear housing 50 and mounted inside the rear housing 50 so as to be charged by power supplied from the outside through the charging terminal 57. A battery 55; The PCB substrate 40 mounted on the upper surface of the battery 55 by applying a constant current boost-up circuit to boost and supply the voltage of the battery 55 to a preset voltage according to a PWM signal. ; An OLED panel 30 electrically connected to the PCB substrate 40 and mounted on a front surface of the PCB substrate 40 so that the lighting and brightness are controlled according to a signal supplied from a microcontroller of the PCB substrate 40; The touch panel 20 is installed in the upper part of the OLED panel 30 so as to be configured as a 4-wire resistive film and to be in contact with the OLED panel 30 by the pressure applied from the top to adjust the illumination brightness by using coordinate recognition using a resistance value of vertical and horizontal. ); It is provided on the rear and side surfaces of the rear housing 50 to control the main power supplied to the PCB substrate 40, the OLED panel 30, and the touch panel 20 from the battery 55 and the operating power of the OLED panel. It consists of; the main power switch 54 and the auxiliary power switch 56.

Description

Lighting device for medical using the organic light emitting diodes

The present invention relates to a medical lighting device using an organic light emitting diode (OLED), in particular, to provide a portable lighting device that can be used for medical use using an OLED close to natural light, by applying a photocatalyst coating to have antibacterial ability and light weight It relates to a medical lighting device using an organic light emitting diode easy to use.

In general, lighting refers to a device that illuminates objects and their surroundings by using light (especially artificial light), and artificial lighting is installed in most facilities where humans live. have.

In other words, lighting and lighting devices are the basic lighting to achieve the primary purpose of illuminating the artificial light to illuminate the surroundings, and the interior lighting to directly or indirectly illuminate a specific object or space to enhance the decorative effect. There are lights, directing lights used in theaters and movies, and non-fixed lights installed in moving objects such as vehicles.Incandescent lamps, fluorescent lamps, halogen lamps, LED lamps, gas lamps, etc. Ceiling lights (ceiling lights), down lights, street lights, exterior lights, floor stands, pendants, wall lights, spot lights, and vehicles are widely used depending on the places and locations of use.

 On the other hand, in recent years, the use of LED lighting in a variety of environments is gradually expanding.

LED light sources have been spotlighted as new digital lighting, compensating for the shortcomings of conventional lighting such as high efficiency, miniaturization, light weight, long life and eco-friendliness compared to conventional fluorescent or incandescent lamps.

In particular, the LED light source is widely used as a light source for providing a high-definition image from a simple light while being used in various portable communication devices, computers, TVs, other display devices and industrial applications.

However, when the LED light source is used as a surface light, there is a lot of glare and heat is generated to require a heat radiation fan, a heat sink, a diffusion plate, etc., the structure is complicated, the manufacturing process is difficult, and the production cost increases.

In addition, LED lighting requires additional parts such as a light guide plate and lampshade in the manufacture of a luminaire, and has a disadvantage in that it is bulky. When the light is straight, the glare is large, and a large number of point light sources pass through the diffuser plate to provide a surface light source. There was a disadvantage that the uniformity of light falls.

On the other hand, such lighting is used for various purposes in addition to its primary purpose.

For example, in the case of the hospital lighting of the hospital where the patients are hospitalized, there is a case in which the lighting is provided as close to nature as possible to keep the patient's body and the village healthy by simply moving away from the simple lighting function that illuminates the surroundings.

In this way, by providing lighting close to nature to patients, natural healing power is improved, and biological rhythm can be restored to maintain a rhythmic sense of real life outside to support rapid enjoyment.

In addition to the ceiling lighting, it is possible to produce a variety of colors or color temperature in the stand-type lighting, so that the user's physical and mental state can be kept stable and comfortable to help improve the natural healing effect.

In this way, the illumination of various uses is provided in various places of our lives using the LED light source, and the convenience is improved.

In addition, in recent years, with the development of technology, OLED (Organic Light Emitting Diodes) lighting, which is more efficient and improved usability than LED lighting, has appeared.

OLED lighting has the advantages of low power consumption, uniform brightness, low glare and high color purity compared to LED lighting, so it does not require optical system, over-optical film, heat-dissipating fan, heat sink, etc. Its small size, small volume and slim shape make it possible to manufacture, and it has the advantage of making flexible and transparent lighting.

The present invention is to provide a portable lighting device for a special purpose, that is, used in a hospital by using the OLED light source, and looks at the prior art limited to the technical field to which the present invention belongs.

Among portable lighting devices used for medical purposes, there is a medical penlight as an example.

A medical penlight, which is a portable lighting device used in a conventional medical institution, has a cylindrical body of a predetermined length in the form of Peng, illumination provided at one end of the main body, and filled in the main body to supply power to the illumination. It consists of a battery included in the weight of the use, there is no anti-bacterial general lighting for medical use.

Therefore, medical penlights used in hospitals with a large number of various pathogens act as a mobile medium to propagate various pathogens, which is more convenient to use, and it is necessary to supply products with antibacterial ability against various pathogens when using lights. .

-Korea Patent Registration No. 10-1490503 (Registration Date: 2016.01.30, Name of invention: Medical portable light source device) -Korea Utility Model Registration No. 20-0481012 (Registration Date: 2016.07.28, Designated Name: Portable LED Lighting Device) -Korea Utility Model Registration No. 20-0463289 (Registration Date: 2012.10.22, Designated Name: Medical Lighting Device) -Korean Patent Registration No. 10-1222551 (Registration Date: 2013.01.09, Name of invention: Medical light source device)

The present invention has been made to solve the disadvantages of the conventional portable medical lighting device, light weight compared to the LED lighting device, simple configuration and structure, easy to produce and assemble, photocatalyst by receiving light around The purpose of the present invention is to provide a medical lighting device using an organic light emitting diode that can provide antibacterial and antiseptic function.

Medical lighting device using the organic light emitting diode according to the present invention in order to achieve the above object is composed of a front housing and a rear housing made of a structure that can be separated before and after, the left and right sides of the front and rear housings are provided with a plurality of grips up and down main body; A battery which is electrically connected to a charging terminal installed inwardly and externally from one side of the rear housing and mounted inside the rear housing to be charged by external power supplied through the charging terminal; A PCB substrate to which a constant current boost-up circuit is applied to boost the voltage of the battery to a predetermined voltage according to a PWM signal and installed on the upper surface of the battery inside the rear housing; An OLED panel electrically connected to the PCB substrate, the OLED panel mounted on the front of the PCB substrate so that the lighting and brightness are controlled according to a signal supplied from the microcontroller of the PCB substrate; A touch panel installed on the OLED panel so as to be in contact with the OLED panel with a pressure applied from the upper side and configured to recognize a coordinate by using a resistance value of a vertical and horizontal direction to adjust the brightness of the illumination; A main power switch and an auxiliary power switch provided on the rear and side surfaces of the rear housing of the main body so as to control the main power supplied to the PCB substrate, the OLED panel and the touch panel from the battery, and the operation power of the OLED panel; It is done by

In particular, the surface of the front housing is coated with a photocatalyst coating layer to a predetermined thickness to oxidatively decompose and remove harmful substances in the air through photochemical reactions and to perform antibacterial and deodorizing functions by receiving external light and mounted on the front of the battery. The PCB substrate is formed so that the through portion corresponding to the size of the battery is configured so that the battery is fitted into the through portion to minimize the volume during assembly.

Providing a medical lighting device using the organic light emitting diode according to the present invention made of the above-described configuration, when the medical people use the lighting device of the present invention is light weight, even if used for a long time, it is made of a lightweight and slim configuration Make it easy to carry and use.

In addition, titanium dioxide is coated on the surface of the lighting device to receive ambient light to sterilize and purify the contaminated air by photocatalytic reaction, thereby helping to prevent the spread or spread of pathogens.

1 is an exploded perspective view of a main configuration of an LED lighting apparatus according to a conventional embodiment;
Figure 2 is an external perspective view of a medical lighting device using an organic light emitting diode according to the present invention,
Figure 3 is an exploded perspective view of the main configuration of the medical lighting device using an organic light emitting diode according to the present invention,
4 is an excerpt of a charging circuit diagram of a battery applied to a medical lighting device using an organic light emitting diode according to the present invention,
5 is a lighted state diagram of a medical lighting device using an organic light emitting diode according to the present invention,
Figure 6 is a manufacturing process of the photocatalyst used in the medical lighting apparatus according to the present invention,
7 and 8 are SEM pictures of titania powder prepared according to an embodiment of the present invention,
9 is a photograph of the coating state of the housing surface is a photocatalyst coating.

Medical lighting device using the organic light emitting diode according to the present invention (hereinafter, abbreviated as 'medical lighting device') is manufactured in a portable type to be carried in the pocket of the medical person in the pocket or on the neck when examining or examining the patient, It is configured for use during night care.

In particular, the present invention is configured to minimize the configuration of the peripheral device by providing a light using the organic light emitting diode (OLED) to minimize the overall weight of the lighting device to further improve the user convenience.

In addition, the present invention consists of a configuration that the grip is provided on the left and right sides of the main body so that the user is easy to grip the user's hand when used as lighting, and the lighting device does not slip easily from the hand holding the lighting device.

In addition, the present invention consists of a photocatalyst is coated on the surface of the main body so that the photochemical reaction occurs by the ambient light to sterilize, antibacterial and purify various contaminants or pathogens contained in the air.

Hereinafter, with reference to the accompanying drawings will be described the main configuration of the medical lighting device according to the present invention.

In addition, in the detailed description of the present invention based on known techniques can be easily devised by those skilled in the art or a description thereof commonly used in the art will be omitted.

In addition, in the directional terms used in the present invention, the front and the front means the light emitting side (right direction in the drawing), the rear or the back means the opposite direction (left direction in the drawing) in which the light is emitted. .

Figure 1 shows an external perspective state of the medical lighting device according to the present invention, Figure 2 shows a separate state for the main configuration of the medical lighting device, respectively.

As shown in the figure, the medical lighting device 100 according to the present invention comprises one main body 60 to the size that the adult can hold with one hand, the main body 10 is the front housing 11 ) And the rear housing 50 is made of a configuration that can be separated and combined.

In addition, both side surfaces of the front housing and the rear housing, which are integrally assembled with each other, form concave grip portions 11 and 51 having a concave shape so that the user can improve the grip feeling when holding by hand. Consists of

In addition, a battery 55 having a predetermined capacity is built into the front inner side of the rear housing 50, and one side surface of the rear housing 50 to which the battery 55 is mounted penetrates into and out of the rear housing 50. The charging terminal 57 is installed, and the charging terminal 57 is electrically connected to the battery 55 and configured to charge the discharged battery by supplying power from the outside through the charging terminal 57.

And, as shown in the separated perspective view of Figure 3, the rear top of the rear housing is provided with a main power switch 54 that is electrically connected to the PCB substrate to be described later to control the main power supplied to each part from the battery. On one side of the rear housing 50, an auxiliary power switch 56 for controlling an illumination control signal provided to the OLED panel from a PCB substrate to be described later is installed in a state in which the user grips the main body with one hand. It is configured to control the whole power and lighting of OLED panel.

On the other hand, the front of the battery 55 is equipped with a PCB substrate 40 is provided with a power supply circuit and an illumination control circuit, one side of the PCB substrate 40 to be fitted to the outside of the battery 55. The through part 45 is formed so that the PCB substrate 40 positioned in front of the battery 55 is not seated on the top of the battery so that the volume of the main body can be reduced by the thickness of the PCB. In addition, the PCB is designed such that a circuit related to the power supply circuit and the lighting control is configured in the remaining space except the through part 45.

In addition, the OLED panel 20 is mounted on the front surface of the PCB substrate to be electrically connected to the PCB substrate 40 and to control the lighting and brightness according to the signal supplied from the microcontroller provided in the PCB substrate 40, The touch panel 20 is seated in front of the OLED panel 20 so that the brightness of the OLED light may be adjusted by a resistance value contacting the touch panel 20.

The touch panel 20 has a structure of 4 wire resistive type in which pressure is applied to the overlapping valves in a state in which they are separated from each other, and the panel is in contact with each other to recognize coordinates using resistance values of horizontal and vertical OLED panels. It is configured to adjust the brightness of the lighting.

On the other hand, the medical lighting device according to the present invention having the above-described configuration is applied to the surface of the front housing of the photocatalyst coating layer 15 with a predetermined thickness to receive external light to oxidatively decompose harmful substances in the air through a photochemical reaction. It consists of features configured to remove and perform antibacterial, deodorizing functions.

In addition, the battery 55 mounted inside the main body 60 to supply power is composed of a lithium ion battery having a capacity of 4,000 ㎃, and the IC circuit utilizes a BQ24090 chip as shown in the charging circuit of FIG. 4. It is preferably configured to monitor the temperature internally and has an overvoltage protection function that reduces the input voltage by reducing the charging current when the internal temperature exceeds the threshold value. It is configured to be able to charge its current.

In addition, DC-DC charger pump is applied to stably supply the anomalous voltage of the battery, and the MCP1252 Chip used is output at 3.3V, which is the designed value even when the input voltage is lower or higher than the output voltage. It is configured to drive the microcontroller and touch panel with the voltage output from the DC charger pump circuit.

In addition, the microcontroller (not shown) provided in the PCB substrate 40 adjusts the brightness of the OLED panel 30 based on the button input of the auxiliary power switch 56 and the touch input value of the touch panel 20. It is programmed to do this, especially to stabilize the unstable battery voltage.

On the other hand, since the driving voltage of the OLED panel is 6v and the battery of the OLED panel cannot be turned on with a 4.5v battery, the constant current boost-up circuit is provided to boost the voltage of the battery to a predetermined voltage according to a PWM signal. It is designed.

The state in which the medical lighting device according to the present invention configured as described above is assembled and lit is shown in FIG. 5.

In other words, the medical lighting device according to the present invention using the OLED lighting is connected to the upper end of the main body through the connection line fixing hole fixed to the neck and always carry the light can be used to illuminate when needed, even if you wear a neck as a relatively lightweight material The main body is configured so that the user does not feel a big burden even when he is worn around the neck.

In addition, when illuminating the affected part of the patient, the OLED light is less glare and the brightness is uniform, so that the affected part of the patient can be accurately identified.

On the other hand, the medical lighting device according to the present invention is configured to have a photocatalyst coating layer on the housing surface to have an antibacterial and sterilizing function when used for medical purposes.

To this end, in the present invention, titanium dioxide (TiO ₂ ) was used as a photocatalyst, and after the Titania powder was directly prepared, it was diluted with a binder and used as a cotan liquid.

Example 1

First, in order to prepare titania powder to be used as a photocatalyst, a titania powder was prepared through a hydrothermal synthesis process by the process shown in FIG. 6, and after dilution by adding to the binder to the prepared titania powder, the housing was immersed for a predetermined time. It was.

1) Titania mother liquor manufacturing (primary)

In order to prepare a titania mother liquor, 24 mL of titanium isopropoxide and 160 mL of distilled water were prepared at low temperature in consideration of the characteristics of the anatase shape with high results to prepare ice water, and a mother solution was prepared by mixing the titanium solution little by little.

The mother liquor was prepared under four conditions to examine the optimization of the powder molecules of the mother liquor.

Sample NO. Stock solution Temperature (℃) Hours (h) One TiOCl ₄ 0.8M 100 3 2 TiOCl ₄ 0.8M 100 5 3 TiOCl ₄ 0.8M 100 7 4 TiOCl ₄ 0.8M 130 3

2) hydrothermal synthesis and powder separation

The prepared titania mother liquor was put in a hydrothermal synthesis vessel and subjected to hydrothermal synthesis at 230 ° C. for 12 hours.

After the hydrothermally synthesized titania mother liquor was dispersed in an ultrasonic mixture, the mother liquor and the titania powder were separated by centrifugal separation.

3) Titania powder check

The separated titania powder was magnified x100,000 times, and SEM images were analyzed. As a result, it was found that the titania powder appeared in a clustered shape as shown in FIG.

This cluster shape was confirmed to be 800 nm larger than the size or target value of the particle shape because of poor light transmittance conditions, and the second hydrothermal group was conducted under different conditions to change the titania particle size and shape.

3) Titania mother liquor manufacturing (secondary)

Hydrothermal synthesis was carried out under the conditions shown in Table 2 below by lowering the concentration and increasing the synthesis time to prepare a secondary titania mother liquor.

sample NO. stock solution Temperature (℃) Hours (h) a TiOCl ₂ 0.24M 100 6 b TiOCl ₂ 0.24M 100 12 c TiOCl ₂ 0.24M 100 24

Hydrothermal synthesis was carried out under such conditions to prepare a titania mother liquor, and after the titania powder was separated through the process of 2), the SEM photograph was taken again. As shown in FIG. It was confirmed that the average was composed of 35nm.

In addition, considering that the anatase crystal phase may be formed at a high temperature by mixing acetic acid and distilled water to the titania powder obtained as judged to be suitable for light transmittance, hydrothermal synthesis was performed at 240 ° C. for 24 hours.

4) Dip coating

The Titania powder thus obtained was diluted by adding a binder in a ratio of 1: 2, and then a precursor layer was formed on the surface of the sample, and then fired at an appropriate temperature to perform coating by a dip coating method suitable for a small product.

That is, the coating was carried out by immersing the housing of the main body in the coating liquid for 12 hours, and after drying, the coating was dried at 40 ° C. for 24 hours, and the result of measuring the SEM photograph of the dried coating surface is shown in FIG. 9. have.

5) Antibacterial test

In this way, in order to find out the performance of the photocatalyst manufactured and coated on the housing, commissioned by a certified institution (Korea Institute of Construction and Environmental Testing) conducted a pathogenic bacterial test of the photocatalyst.

The test method was JIS Z 2801: 2012, strains used Escherichia coli and Staphylococcus aureus, and the test results confirmed that it had antibacterial activity of Escherichia coli 5.8 (99.999%) and Staphylococcus aureus 5.2 (99.999%) (test report). CT17-113321).

For reference, when the antimicrobial activity value is 4 or more, the antimicrobial effect is 99.99% or more, and the photocatalysts applied to the present invention were found to have a very excellent antimicrobial activity by exceeding all antimicrobial activity values of 5.

10: front housing 11: grip part
12,52: connecting line fixing hole 15: photocatalyst coating layer
20: touch panel 30: OLED panel
40: PCB substrate 45: through part
50: rear housing 51: grip
54: main power switch 55: battery
56: auxiliary power switch 57: charging terminal
60: body
100: medical lighting device

Claims (2)

A main body 60 provided with grip parts 11 and 51 on the left and right sides and comprising a front housing 10 and a rear housing 50 that can be separated from each other; A battery 55 mounted inside the rear housing 50 to be charged by an external power source through a charging terminal 57 installed at one side of the main body 60; A PCB substrate 40 mounted on the inside of the rear housing 50 by applying a constant current boost-up circuit to boost the voltage of the battery 55 to a predetermined voltage according to a PWM signal; An OLED panel 30 mounted on the front surface of the PCB substrate 40 so that the lighting and brightness are controlled according to the microcontroller control of the PCB substrate 40; A touch panel 20 disposed in an upper portion of the OLED panel 30 so as to be configured as a 4-wire resistive film to be in contact with the OLED panel 30 with an upper pressing force and to adjust illumination brightness by coordinate recognition using a resistance value of vertical and horizontal; Main power switch provided on the outer surface of the main body 60 to control the power supplied to the PCB substrate 40 and the OLED panel 30 and the touch panel 20 and the operating power of the OLED panel from the battery 55 54 and the auxiliary power switch 56; including,
Photocatalyst coating layer using titania powder coated to a certain thickness to oxidatively decompose and remove harmful substances in the air through photochemical reaction and to perform antibacterial and deodorizing functions by receiving light on the surfaces of the front and rear housings 10 and 50. 15 is formed,
In order to minimize the assembly space between the battery 55 and the PCB board 40, the PCB board 40 is characterized in that the configuration is formed with a through portion 45 of the size to which the battery 55 is fitted Medical lighting device using an organic light emitting diode. delete

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