KR101705802B1 - lighting device for food display stand having ultraviolet rays sterilization function - Google Patents

Abstract

The present invention relates to a technology for effectively sterilizing food on a food display stand formed long in a transverse direction and highlighting texture of the displayed food. A sterilization line part is arranged in a linear form to correspond to a structure of the food display stand installed long in the transverse direction, so it is possible to uniformly form an effective sterilization area on a mounting rack of the food display stand with a small number of sterilization LEDs. In addition, a lighting line part is arranged in a linear form to correspond to the structure of the food display stand, so different color families of visible rays are irradiated according to kinds of food displayed. According to the present invention, ultraviolet rays emitted from multiple sterilization LEDs form the effective sterilization area overlapping linearly along a top surface of the mounting rack. Thus, it is possible to uniformly sterilize the top surface of the mounting rack even if the sterilization line part performs sterilization operation for a short period of time.

Description

TECHNICAL FIELD [0001] The present invention relates to a lighting device for a food shelter having an ultraviolet sterilizing function,

The present invention relates to a technology for effectively sterilizing food placed on a food shelf extending in a transverse direction and emphasizing the texture of the displayed food.

More particularly, the present invention relates to a food rack having a sterilizing line portion arranged linearly in correspondence with a structure of a food shelf extending long in a lateral direction, thereby uniformly forming an effective sterilization region for a rack of a food shelf with a small number of sterilizing LEDs The present invention relates to a technique for irradiating a visible ray of a different color series according to the type of food displayed by linearly arranging the illumination line portion corresponding to the structure of the food display stand.

Particularly, a technique of performing the operation of the sterilization line unit periodically for a very short period of time so that the food inside the foodstuffspan can be maintained fresh even when the inside and outside air of the foodstuffshelf are circulated frequently in the process of opening and closing the tea- to be.

To this end, the sterilizing line unit according to the present invention effectively irradiates ultraviolet rays irradiated by a plurality of sterilizing LEDs in an effective sterilization zone along the upper surface of the rack to effectively sterilize food on the upper surface of the rack, even if the sterilization operation is performed for a short time Respectively.

In general, the display shelves of merchandise showcases are designed to look beautiful, thereby attracting customers' attention and motivating them to purchase products.

Here, lighting is one of the most important things to make food shelves look beautiful.

However, when the food placed on the food shelf is food, the freshness may be high or stimulate the purchase desire according to the lighting. As such, depending on how the lights are installed on the food shelf, the purchase rate of the items placed on the food shelf (eg, food) may change.

On the other hand, if the food placed on the food shelf is food, it may stimulate the purchase visually by lighting, but it is necessary to maintain the freshness of the food placed on the food shelf by keeping the sterilizing device on the food shelf.

On the field, food displays that display food are trying to maintain the freshness of food by installing shields with mostly transparent glass or plastic. However, in the process of opening and closing the shielding film frequently for the sale of goods, the outside air passes through the inside and the outside of the food shelf, and the freshness of food in the shelf is drastically deteriorated.

Eventually, the food shelves selling food need to have a light to illuminate the visible light that the buyer wants to buy the displayed food, and it is necessary to keep the freshness of the food actually displayed on the display long.

Korean patent application No. 10-2012-0117701 "Sterilized LED light" Korea Patent Application No. 10-2009-0112383 "LED lighting for food shelf" Korean Patent Application No. 10-2009-0006290 "LED Display Lighting Device for Food Stands" Korea patent application 10-2010-0123963 "sterilizing LED light"

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a method and apparatus for effectively sterilizing food on a display shelf for displaying food, thereby prolonging the freshness holding time in the food shelf, A lighting device for a food shelf having an ultraviolet sterilizing function for enhancing the appearance of the food.

It is also an object of the present invention to provide a lighting device for a food shelf having an ultraviolet sterilizing function that uniformly sterilizes the food rack over a whole range of shelves on a linearly arranged food shelf.

It is another object of the present invention to provide a lighting apparatus for a food display stand having an ultraviolet sterilizing function which can effectively realize an effective sterilization area for food by adopting a small number of sterilizing LEDs.

It is also an object of the present invention to provide a lighting apparatus for a food shelf having an ultraviolet sterilizing function for sterilizing food on the upper surface of a rack in a very short time.

It is another object of the present invention to provide an illumination device for a food display stand having an ultraviolet sterilizing function that can be easily switched to visible light of a suitable color according to the type of food on a food display stand.

In order to achieve the above object, the present invention provides an illumination device for a food display stand mounted on a food shelf and sterilizing foods displayed on the upper surface of a shelf rack by irradiating ultraviolet rays to a shelf rack of a food shelf, A PCB board 110 formed to be long in the left and right direction of the food shelf so as to be perpendicular to the front and rear directions of the food shelf and mounted on the food shelf; A plurality of sterilizing LEDs are linearly arranged along the longitudinal direction of the PCB substrate on the lower surface of the PCB substrate and irradiated with ultraviolet rays in a downward direction by a power source supplied from the PCB substrate to form an effective sterilization area on the upper surface of the stationary rack (120); A plurality of illuminating LEDs are linearly arranged in parallel so as to be parallel to the sterilizing line portion on the lower surface of the PCB substrate corresponding to both sides of the sterilizing line portion and the visible light is irradiated in a downward direction by a power source supplied from the PCB substrate, And an illumination line unit 130 which forms reflected light of color.

At this time, since the sterilizing line 120 is arranged linearly so as to be spaced a predetermined distance apart from each other by a plurality of sterilizing LEDs, the sterilizing line unit 120 is effective by ultraviolet rays irradiated from at least three or more sterilizing LEDs The sterilization area is formed uniformly on the upper surface of the rack in the longitudinal direction of the food shelf.

In addition, the lighting line unit 130 sequentially arranges the cool mode LEDs and the warm mode LEDs, which are classified according to the color sequence of the visible light lines among the plurality of lighting LEDs, so that the cool mode LEDs And the mode switch of the visible light irradiated on the upper surface of the stationary rack can be performed according to the selective operation of the warm mode LED.

A sterilizing control unit for controlling the plurality of sterilizing LEDs provided in the sterilizing line unit to periodically irradiate ultraviolet rays for a predetermined sterilization time; And a lighting control unit for controlling mode switching of the cool mode LED and the warm mode LED.

It is preferable that the sterilization time periodically set in advance ranges from 1 minute to 10 minutes.

In addition, it is preferable that the sterilization line portion is configured to irradiate an ultraviolet ray having a wavelength band in the range of 200 nm to 400 nm to the effective sterilization region.

On the other hand, the ultraviolet irradiation angle irradiated downward by the plurality of sterilizing LEDs provided in the sterilization line portion may be realized in the range of 110 ° to 130 ° along the longitudinal direction of the PCB substrate.

The present invention has the advantage of extending the freshness retention time of food in the food shelf and enhancing the texture.

Further, the present invention shows the advantage of uniformly sterilizing the entire range of the stationary racks arranged in a line.

Further, the present invention adopts a small number of sterilizing LEDs, thereby showing an advantage that an effective sterilization area for food can be effectively realized.

The present invention also shows the advantage of sterilizing the food on the upper surface of the rack in a very short time.

In addition, the present invention has the advantage of being able to easily switch to a visible color of light suitable for the type of food on the food shelf.

1 is an exemplary view schematically showing a food shelf equipped with a lighting device according to the present invention,
FIG. 2 is an illustration showing a PCB substrate of an illumination device for a food display stand having an ultraviolet sterilizing function according to the present invention,
FIG. 3 is a view showing a state in which ultraviolet rays are irradiated from a plurality of sterilizing LEDs linearly arranged in a sterilizing line part according to the present invention.
4 is a diagram illustrating a state in which ultraviolet rays are irradiated from a plurality of sterilizing LEDs linearly arranged in a sterilizing line unit according to the present invention.
FIG. 5 is a view illustrating an operation pattern of the sterilizing LED provided in the sterilizing line portion of the present invention,
6 is a plan view of the PCB housing according to the present invention,
7 is a sectional view taken along the line AA in Fig. 6,
FIG. 8 and FIG. 9 are views illustrating the process of joining the PCB housing according to the present invention sequentially on the AA line cross-sectional view. FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is an exemplary view schematically showing a food shelf equipped with a lighting apparatus according to the present invention;

The food rack (10) on which the lighting apparatus according to the present invention is installed has a plurality of racks (12, 13, 14) on which food is placed, and each rack (12, 13, 14) .

The PCB substrate 110 of the lighting apparatus for irradiating ultraviolet rays and visible light to the mounting rack 12 located at the uppermost one of the plurality of mounting racks 12, 13 and 14 is located at the top of the food shelf 10 Is disposed on the ceiling portion (11).

Of the plurality of racks (12, 13, 14), the racks (12, 13) placed in an excited state inside the food shelf (10) are designed to seat food on the upper surface of the rack The PCB substrate 110 of the lighting apparatus is installed so that ultraviolet rays and visible rays are irradiated to the mounting rack immediately below.

The food shelf 10 is preferably composed of a shielding film made of glass or plastic which is transparent to the front and rear surfaces so that the food provided inside the food shelf 10 can be seen and the outside air is supplied to the food shelf 10 Prevent corruption of food by blocking internal and external communication.

Here, the shielding film provided on the rear side of the food shelf 10 may be formed of a sliding door so that food can be inserted into the food shelf 10 or food can be taken out from the inside.

FIG. 2 is an illustration showing an excerpt of a PCB substrate of an illumination device for food shelves having an ultraviolet sterilizing function according to the present invention.

The present invention relates to an apparatus and method for disinfecting foods placed on the upper surface of a stationary rack (12, 13, 14) by irradiating ultraviolet rays to the stationary racks (12, 13, 14) of the food shelf It is a lighting device for a shelf. The illumination device for a food display stand of the present invention includes a PCB substrate 110, a sterilizing line unit 120, an illumination line unit 130, and an LED operation control module 200.

The PCB board 110 is electrically connected to the food shelf 10 by being extended from left to right of the food shelf 10 so as to be perpendicular to the longitudinal direction of the food shelf 10.

In other words, the sterilization line unit 120 can uniformly form an effective sterilization area on the upper surface of the mounting racks 12, 13, 14 in consideration of the sterilization line unit 120 disposed on the lower surface of the PCB substrate 110 It is preferable to have a rectangular shape like the shape of the rectangular racks 12, 13,

The sterilizing line unit 120 includes a plurality of sterilizing LEDs 121 linearly arranged along the longitudinal direction of the PCB substrate 110 on the lower surface of the PCB substrate 110 and is arranged in a downward direction An effective sterilization area is formed on the upper surface of the stationary racks 12, 13, and 14 by irradiating ultraviolet rays.

The illumination line unit 130 includes a plurality of illumination LEDs 131 arranged linearly in parallel on the lower surface of the PCB substrate 110 corresponding to both sides of the sterilization line unit 120 so as to be parallel to the sterilization line unit 120, 13, and 14 by irradiating visible light in a downward direction by a power source supplied from the light source 110.

The lighting line unit 130 is configured such that the cool mode LEDs 131b and the warm mode LEDs 131a are sequentially alternated in accordance with the color sequence of the visible light among the plurality of illumination LEDs 131, The modes of the visible light beams irradiated on the upper surfaces of the stationary racks 12, 13, and 14 can be switched according to the selective operation of the cool mode LED 131b and the warm mode LED 131a in accordance with the type of food placed on the stationary racks .

The LED operation control module 200 includes a sterilizing control unit for on-off controlling the operation of the sterilizing LED 121 provided in the sterilizing line unit 120 and a control unit for controlling the operation of the illumination LED 131 provided in the illumination line unit 130 And an illumination control unit for selectively controlling on and off.

Here, the sterilization control unit preferably controls the plurality of sterilizing LEDs 121 provided in the sterilization line unit 120 to periodically irradiate ultraviolet rays for a predetermined sterilization time (for example, 1 to 10 minutes).

Preferably, the illumination controller selectively controls the operation of the cool mode LED and the warm mode LED so that the visible light of different color series is irradiated according to the type of foods that are seated in the racks 12, 13, and 14 .

FIG. 3 is an exemplary view 1 showing a state in which ultraviolet rays are irradiated from a plurality of sterilizing LEDs linearly arranged in a sterilizing line portion according to the present invention.

The sterilizing line unit 120 may include a plurality of sterilizing LEDs 121 arranged in a line so as to be spaced apart from each other by a predetermined distance so as to be irradiated from at least three or more sterilizing LEDs 121 among the plurality of sterilizing LEDs 121 The effective sterilization area can be uniformly formed on the upper surface of the racks 12, 13, and 14 along the longitudinal direction of the food shelf 10 by ultraviolet rays.

As described above, the sterilizing LED 121 on the linearly arranged sterilizing line unit 120 is minimized to effectively realize the effective sterilization area for the food on the upper surface of the racks 12, 13 and 14 while increasing the energy efficiency.

On the other hand, if the effective sterilization area of ultraviolet rays irradiated to the stationary racks 12, 13, and 14 is not uniformly formed, ultraviolet rays are irradiated weakly in the local area even though strong ultraviolet rays are irradiated in most areas. If so, there is a problem that the food placed in the local part may become corrupted, and if the total sterilization time is set according to the local part, the energy efficiency will be very low.

Therefore, it is most important that the effective disinfection area is uniformly realized in all the parts of the mounting racks 12, 13, and 14.

On the other hand, as shown in FIG. 3, the ultraviolet irradiation angle of the plurality of sterilizing LEDs 121 provided on the sterilizing line unit 120 downward is set to 110 to 130 degrees along the longitudinal direction of the PCB substrate 110 . ≪ / RTI >

It is preferable that the spacing distance between the sterilizing LEDs 121 is determined in consideration of the distance between the ceiling portion 11 and the mounting rack 12, and the ultraviolet irradiation angle of the sterilizing LED 121 downward.

In FIG. 3, reference symbol 'd' denotes an effective sterilization area formed by irradiating ultraviolet rays superimposed by three sterilizing LEDs 121 arranged in a line on a PCB substrate 110, for example.

In this case, the left and right lengths of the food shelf 10 will be the effective sterilization zone d. The PCB substrate 110 is manufactured in accordance with the left and right lengths of the food shelf 10 so that the sterilization line unit 120 is formed to correspond to the left and right lengths of the food shelf 10, The distance between the sterilizing LED 121 and the sterilizing LED 121 will be adjusted.

FIG. 4 is an exemplary view 2 showing a state in which ultraviolet rays are irradiated from a plurality of sterilizing LEDs linearly arranged in a sterilizing line portion according to the present invention.

If the lateral length of the food shelf 10 is relatively long, the length of the PCB board 110 is preferably long.

When the length of the PCB substrate 110 is increased, the length of the sterilizing line unit 120 formed on the lower surface of the PCB substrate 110 is also increased.

Here, as the length of the sterilization line unit 120 increases, the number of the sterilization LEDs 121 disposed in the sterilization line unit 120 also increases. Considering the effective sterilization area formed by the sterilization line unit 120 It is preferable to keep the distance between the sterilizing LEDs 121 on the sterilizing line unit 120 at the same interval so that the original sterilizing ability can be maintained.

In FIG. 4, 'd1' represents an effective sterilization region formed by irradiating ultraviolet rays superimposed by six sterilizing LEDs 121, for example, and 'd2' represents 5 Sterilization LEDs 121. The sterilizing LEDs 121 are arranged in the area of the sterilizing LED 121, The reference character 'd3' represents an effective sterilization region including the area overlapping by the four sterilizing LEDs 121 among the six sterilizing LEDs 121. The symbol 'd4' Sterilization LEDs 121. The sterilizing LEDs 121 are arranged in the area of the sterilizing LED 121,

At this time, the left and right length of the food shelf 10 will be the effective sterilization zone d4. In this case, the effective sterilizing area in the mounting rack 12 is formed by superimposing ultraviolet rays irradiated from at least three sterilizing LEDs 121.

Here, the sterilization time of the sterilization line part 120 may be set considering the effective sterilization area formed when the sterilization line part 120 is overlapped by the three sterilization LEDs 121. [

5 is an exemplary view showing an operation pattern of the sterilizing LED provided in the sterilizing line unit of the present invention.

The sterilization control unit provided in the LED operation control module 200 controls the plurality of sterilizing LEDs 121 provided in the sterilization line unit 120 to operate during the predetermined sterilization time t1 with a period t2.

For example, the sterilizing LED 121 of the sterilizing line unit 120 stops operating for 1 hour (t2) after 1 minute (t1) of irradiation of ultraviolet rays from the sterilizing LED 121 of the sterilizing line unit 120. Then, the sterilizing LED 121 of the sterilizing line unit 120 stops operating for 1 hour (t2) after 1 minute (t1) after the ultraviolet rays are irradiated from the sterilizing LED 121 of the sterilizing line unit 120 Lt; / RTI >

Here, the predetermined sterilization time t1 may preferably be in the range of 1 minute to 10 minutes.

On the other hand, when the actual use of the food in the store is examined, the food displayed on the food shelf (10) is frequently opened and closed according to the customer's request. Therefore, it is not enough to achieve sterilization once during sterilization time t1, but sterilization at period t2 is necessary.

If the sterilization time t1 is long, it is preferable that the sterilization time is as short as possible because the hands are exposed to the ultraviolet rays when the operator's hand is inserted into the food shelf 10.

Of course, the operation of the sterilizing LED 121 may be manually operated. However, it is preferable that the sterilizing time t1, which is preset periodically, is kept short by irradiating the sterilizing LED 121 intensively to the effective sterilizing area irradiating ultraviolet rays as much as possible.

Here, it is disadvantageous in terms of energy efficiency that a plurality of disinfection LEDs 121 are installed in a completely sterilized area for intensive irradiation of ultraviolet rays at a time.

The sterilizing LED 121 of the sterilizing line unit 120 is installed as shown in FIG. 3 and FIG. 4, which have been described above.

At this time, it is preferable that the sterilization line unit 120 is configured to irradiate ultraviolet rays having a wavelength band in the range of 200 nm to 400 nm to the effective sterilization area.

Here, ultraviolet rays having a strong chemical action and causing sunlight or discoloration are UV-A having a wavelength band ranging from 320 nm to 400 nm, UV-B having a wavelength band ranging from 280 nm to 320 nm, and a wavelength band ranging from 100 nm to 280 nm UV-C < / RTI > UV-C is the strongest, UV-B is the medium intensity, and UV-A is the weakest.

However, ultraviolet rays having a wavelength band in the range of 200 nm to 400 nm, excluding the wavelength band in the range of 100 nm to 200 nm, among ultraviolet rays having a wavelength band in the range of 100 nm to 400 nm are harmful when the human body is exposed to the wavelength range of 100 nm to 200 nm in UV- It is preferable that the sterilizing line unit 120 is configured to irradiate the sterilizing line unit.

On the other hand, when the sterilizing control unit turns on the operation of the sterilizing line unit 120, the LED operation control module 200 turns on a spot-shaped LED separately provided on the food display stand 10 to turn on the sterilizing line unit 120, Can be displayed.

6 is a plan view of a PCB housing according to the present invention.

The upper surface of the PCB housing 300 is attached to the lower surface of the ceiling portion 11 or the mounting racks 12 and 13 of the food shelf 10 in a state where the PCB substrate 110 is mounted on the lower surface of the PCB housing 300 Thereby completing the installation of the lighting device according to the invention.

At this time, a power supply line for supplying power from the outside may be configured to pass through the food shelf 10 and be plugged to the side of the PCB housing 300.

7 is a cross-sectional view taken along line A-A of FIG. 6, and FIGS. 8 and 9 are views illustrating a process of joining a PCB housing according to an embodiment of the present invention, sequentially taken along the line A-A.

The PCB housing 300 includes a substrate support 310, a cover 320, and a side housing 330 as shown in FIG.

A process of mounting the PCB substrate 110 on the PCB housing 300 and assembling the components will be described below.

The PCB housing 110 is mounted on a lower portion of the integrated substrate support 310 as shown in FIG. 8 (b) The board grip bracket 311 is provided to grip the side portion of the PCB substrate 110 as shown in FIG.

Then, as shown in FIG. 9 (a), the cover 320 of a transparent material is fitted into the substrate supporting part 310, thereby preventing foreign matter (for example, water vapor) from sticking to the PCB substrate 110 .

Then, as shown in FIG. 9 (b), the side housing 330 is inserted into both ends of the substrate support 310 to complete the connection of the PCB housing 300.

Socket portions 331 and 332 are formed on the sidewalls of one side housing 330. The socket portions 331 and 332 interface with a power source line for supplying power from the outside.

The mounting of the lighting apparatus according to the present invention is completed by mounting the PCB housing 300 thus completed to the food shelf 10.

10: Food shelf
11: ceiling
12, 13, 14: mounting rack
110: PCB substrate
120: sterilization line section
121: Sterilization LED
130: illumination line section
131: Lighting LED
131a: Warm Mode LED
131b: Cool Mode LED
200: LED operation control module
300: PCB housing
310:
311: Board Grip Bracket
312: housing coupling bracket
320:
330: side housing
331, 332:

Claims (7)

An illuminating device for a food display stand arranged on an upper portion of a stationary rack for sterilizing food by irradiating ultraviolet rays on an upper surface of a stationary rack of a food display shelf for displaying food,
A PCB board 110 formed in a vertical direction of the food shelf so as to be perpendicular to a front and rear direction of the food shelf and disposed at a vertical upper portion of the mounting rack;
A sterilizing line unit 120 arranged in a straight line so that a plurality of sterilizing LEDs are spaced apart from each other by a predetermined distance on the lower surface of the PCB substrate along the left and right direction of the food shelf;
A plurality of illuminating LEDs are linearly arranged in parallel on a lower surface of the PCB substrate corresponding to both sides of the sterilizing line unit so as to be aligned with the sterilizing line unit and a visible ray is irradiated downward by a power source supplied from the PCB substrate, An illumination line unit 130 for forming reflected light of a desired color in the stationary rack;
And,
The ultraviolet rays irradiated from at least three sterilizing LEDs adjacent to each other among the plurality of sterilizing LEDs are irradiated with ultraviolet rays of the sterilizing LED so as to uniformly form an effective sterilizing area on the upper surface of the mounting rack along the longitudinal direction of the accommodation rack And a spacing distance between the plurality of sterilizing LEDs in the sterilizing line portion is set based on a distance between the mounting rack and the PCB substrate and a distance between the mounting rack and the PCB substrate.
delete The method according to claim 1,
The illumination line unit 130 sequentially arranges the cool mode LEDs and the warm mode LEDs, which are classified according to the color sequence of the visible light among the plurality of illumination LEDs, so that the cool line LEDs and the warm mode LEDs are alternately arranged, Wherein the mode switch of the visible light beam irradiated on the upper surface of the stationary rack is possible according to the selective operation of the mode LED and the warm mode LED.
The method of claim 3,
A sterilizing control unit for controlling the plurality of sterilizing LEDs provided in the sterilizing line unit to periodically irradiate ultraviolet rays during a sterilization time preset within a range of 1 minute to 10 minutes;
A light control unit for controlling the mode switching of the cool mode LED and the warm mode LED;
The lighting device for a food display stand having an ultraviolet sterilizing function.
delete The method of claim 4,
Wherein the sterilizing line unit is configured to irradiate ultraviolet rays having a wavelength band ranging from 200 nm to 400 nm to the effective sterilization area.
The method of claim 6,
Wherein the ultraviolet ray irradiation angle of the plurality of sterilizing LEDs provided on the sterilizing line unit is downwardly distributed in a range of 110 to 130 degrees along the longitudinal direction of the PCB substrate. For example.

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