KR102455350B1 - Lamp having intensity variable screen and solar simulation device using the lamp - Google Patents

Abstract

The present invention is a lamp for generating light that mimics sunlight; a screen disposed on the light emitting surface of the lamp to partially block light emitted from the lamp; and a screen driver for moving the screen away from the light emitting surface. In addition, it provides a solar simulating device using the same.

Description

A lamp for controlling the amount of light using a screen and a device for simulating sunlight using the same

The present invention relates to a light source lamp used in a photovoltaic device, and more specifically, to a lamp that controls the amount of light by changing the amount of light transmitted by using a screen instead of controlling the amount of light by controlling the amount of power, and a photovoltaic device using the same .

Solar simulators are used in a wide variety of applications. For example, it is used to test the light resistance properties of various protective coatings including paints, stains, exterior coatings and waxes. In addition, the solar simulator can be used for a variety of medical research applications. For example, solar simulators are frequently used in skin cancer-related research, photobiological applications, phototoxicity, photoallergy testing, as well as a variety of other medical applications. In addition, solar simulation is commonly used to determine the sun protection factor (hereinafter referred to as SPF) of various cosmetics, sun blocks, lotions, and clothes. Typically, SPF testing examines the erythema reaction with and without sunscreen material applied to mammalian skin.

In general, such a solar simulator does not have a configuration in which the light source irradiating light corresponding to sunlight moves in three dimensions, and does not include a configuration that automatically adjusts the amount of light by simulating the rising and setting of the sun, so it is tested realistically. There were limits.

In addition, since it is necessary to simulate the change in the amount of sunlight for each time period to comply with MIL STD 810G Method 505.6 Procedure I, 2, there is a need for development of a new method of simulating sunlight in order to implement this.

Korean Patent Publication No. 10-2016-0063350 Korean Patent Publication No. 10-2017-0098522

An object of the present invention is to provide a lamp that adjusts the amount of light by changing the amount of transmission by using a screen instead of adjusting the amount of light by controlling the amount of power.

A light quantity control lamp using a screen for realizing the object of the present invention, a lamp for generating light that mimics sunlight; a screen disposed on the light emitting surface of the lamp to partially block light emitted from the lamp; and a screen driver for moving the screen away from the light emitting surface.

In this case, the screen may include: a first screen having a first transmittance; a second screen having a second transmittance; and an N-th screen having an N-th transmittance (where N is a natural number greater than 2), wherein the first screen, the second screen, and the N-th screen are arranged side by side so as to be in contact with the light emitting surface sequentially according to movement. form can be connected.

In addition, the screen driver may include: a first roller disposed on one side of the light emitting surface and sequentially accommodating or withdrawing the first screen and the second screen according to rotation by fixing an end of the first screen; and a second roller disposed at a position symmetrical to the first roller and sequentially accommodating or withdrawing the N-th screen and the second screen in accordance with the rotation of the first roller.

On the other hand, it may further include a gap adjuster for adjusting the distance between the light emitting surface and the screen driver.

Solar simulating apparatus using a light quantity control lamp using a screen for realizing the object of the present invention, a lamp for generating light simulating sunlight; a screen disposed on the light emitting surface of the lamp to partially block light emitted from the lamp; a screen driver for moving the screen away from the light emitting surface; and a sensor that is spaced apart from the screen by a predetermined distance and measures the amount of light transmitted through the screen.

According to the light quantity control lamp using a screen according to an embodiment of the present invention and a solar simulating device using the same,

First, since the transmission amount of the lamp is controlled using the screen, it is possible to prevent a change in color temperature that occurs when power is adjusted.

Second, since various types of screens having different transmittances can be positioned on the light emitting surface of the lamp through the roller-type screen driver, a light quantity control lamp can be implemented in a compact manner.

1 is a schematic diagram illustrating a light quantity control lamp using a screen according to the present invention.
2 is a perspective view of a light quantity control lamp using a screen according to an embodiment.
FIG. 3 is a side view of the light quantity control lamp shown in FIG. 2 .
4 is a perspective view of a solar simulating device according to an embodiment.
5 is a real photograph of a mesh wire mesh used as a screen.
6 is a schematic diagram illustrating a light quantity control lamp using a screen according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In this case, it should be noted that in the accompanying drawings, the same components are denoted by the same reference numerals as much as possible. In addition, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings.

1 is a schematic diagram illustrating a light quantity control lamp using a screen according to the present invention, FIG. 2 is a perspective view of a light quantity control lamp using a screen according to an embodiment, and FIG. 3 is a side view of the light quantity control lamp shown in FIG. And, Figure 4 is a perspective view of the solar simulating device according to an embodiment.

1 to 3 , the light quantity control lamp 1000 using a screen according to the present invention includes a lamp 100 , a screen 200 , and a screen driver 300 .

, 162.5

, 387.5

, 6173.5

, 822.5

, 977.5

, 1080

, 1120

등을 모사하기 위해 메탈 헬라이드(Metal Halide) 램프, 또는 플라즈마 램프 또는 LED로 형성될 수 있다. 발광면(L)은 도시 기준 하측 방향이다.The lamp 100 generates light that mimics sunlight. The lamp 100 is the amount of light irradiated by the sun of 27.5

, 162.5

, 387.5

, 6173.5

, 822.5

, 977.5

, 1080

, 1120

It may be formed of a metal halide lamp, or a plasma lamp or LED to simulate the light. The light emitting surface L is downward in the city reference.

In FIG. 1, the lamp 100 is schematically illustrated, and the lamp body, the reflector, the case, and the like are omitted for concise illustration.

The screen 200 is disposed on the light emitting surface L of the lamp 100 and partially blocks the light emitted from the lamp 100 . 5 is a real photograph of a mesh wire mesh used as a screen. The screen 200 may be in the form of a metal mesh. The metal wire mesh is suitable as the screen 200 to withstand the heat of the lamp 100 .

The screen driver 300 moves the screen 200 from the light emitting surface L.

As shown in FIG. 1 , the screen 200 is implemented in a form in which several types of screens having different transmittances are connected.

The first screen 200-1 has a first transmittance, the second screen 200-2 has a second transmittance, and the third screen 200-3 has a third transmittance. For the sake of concise description, the screen 200 is illustrated as having three types of screens connected thereto, and the types and number of screens are not limited.

The first screen 200 - 1 , the second screen 200 - 2 , and the third screen 200 - 3 are connected in a side-by-side form so as to be in contact with the light emitting surface L sequentially as they move. The connection may be performed by a method of connecting different types of mesh wire mesh by stitching.

The amount of light of the simulated sunlight irradiated from the lamp 100 can be adjusted according to the aperture ratio of the mesh wire mesh constituting each screen. That is, it is possible to simply control the amount of light simply by placing a screen having a necessary blocking rate according to the amount of light to be irradiated on the light emitting surface L, rather than controlling the power supplied to the lamp 100 .

According to the present invention, it shows a very excellent effect when the amount of light needs to be changed quickly under simulation conditions. For example, when it is necessary to rapidly reduce or increase the amount of light, in the conventional method, even if the power supplied to the lamp is reduced or increased, the response of the lamp 100 is not instantaneous when heated to a certain temperature.

In contrast, in the present invention, when the amount of light needs to be rapidly changed from the minimum state to the maximum state, the response speed can be easily increased because two types of screens having different transmittances are arranged adjacent to each other. The effect of the screen 200 has been described, and if necessary, control of the power supplied to the lamp 100 may be performed in parallel.

The screen driver 300 includes a first roller 310 , a second roller 320 , a spacing adjuster 330 , and a frame F .

The frame (F) forms the body of the screen driver 300 and has a rectangular frame shape. The first roller 310 , the second roller 320 , and the spacing adjuster 330 are disposed on the frame (F).

The first roller 310 is disposed on one side of the light emitting surface L and fixes the end of the first screen 200-1, and according to rotation, the first screen 200-1 and the second screen 200 -2) are accepted or withdrawn sequentially.

The second roller 320 is disposed at a position symmetrical to the first roller 310 (ie, disposed in a direction facing the first roller 310) and fixes the end of the third screen, and the first roller ( In accordance with the rotation of the 310, the third screen 200-3 and the second screen 200-2 are sequentially drawn out or received in sequence.

The first roller 310 and the second roller 320 are disposed at intervals corresponding to the width of the light emitting surface L, and each screen 200-1, 200-2, 200-3 has at least the light emitting surface L ) is preferably formed in the length of the width.

The first roller 310 and the second roller 320 have auxiliary rollers 311 and 321, respectively, so that the screens 200-1, 200-2, and 200-3 in contact with the light emitting surface L remain flat. may include

The gap adjuster 330 adjusts the distance between the light emitting surface L and the screen driver 300 . That is, the distance between the screens 200 - 1 , 200 - 2 , and 200 - 3 and the light emitting surface L is adjusted.

The spacing adjuster 330 includes at least a pair of vertically moving gears 331 and guide pins 332 . A driving motor (indicated by identification code 330) drives the vertical movement gear 331 and moves the frame F up and down to form a space between the screens 200-1, 200-2, 200-3 and the light emitting surface L. spacing is adjusted.

The screen driver 300 shown in FIGS. 2 and 3 is only one embodiment, and the present invention is not limited to the form shown, and the first roller 310 and the second roller 320 according to the executor. , the shape and arrangement position of the spacing adjuster 330 may be appropriately modified.

4 is a perspective view of a solar simulating device according to an embodiment. Figure 4 is a photovoltaic simulating device having the light quantity control lamp 1000 described in Figs.

Referring to FIG. 4 , the solar simulating device (S) includes a lamp 100 , a screen 200 , a screen driver 300 , a sensor 400 and a chamber (C).

Since the lamp 100, the screen 200, and the screen driver 300 have been described above, overlapping descriptions will be omitted.

The chamber (C) is a case forming a space for accommodating the sample. Depending on the simulation conditions, the chamber (C) may be implemented as a closed type or may be implemented as an open type. In FIG. 4 , it is a shape forming a hexahedral space.

The light quantity control lamp 1000 is provided on the upper surface of the chamber C, and the sensor 400 for measuring the light quantity is provided on the lower surface of the surface corresponding to the light emitting surface of the light quantity control lamp 1000 .

The sensor 400 is disposed to be spaced apart from the screen 200 by a predetermined distance, and measures the amount of light transmitted through the screen 200 . The controller (not shown) may control the simulation conditions of the chamber C through the measured amount of light.

6 is a schematic diagram illustrating a light quantity control lamp using a screen according to the present invention. The light quantity control lamp 1000' using a screen according to another embodiment of the present invention is a lamp 100, a screen 200, a screen driver 300, a secondary screen 200' and a secondary screen driver 300'. includes The secondary screen 200 ′ and the secondary screen driver 300 ′ are the same as the screen 200 and the screen driver 300 described above, and are arranged side by side under the screen 200 and the screen driver 300 . . The present embodiment is disclosed in order to easily satisfy the simulation condition in which instantaneous light quantity control must be continuously performed, and the screen 200 and the secondary screen 200' are overlapped to variously change the light quantity according to the combination of overlapping. And it can be adjusted quickly.

Although it has been described with reference to the above embodiments, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. will be able

S: Solar simulating device
1000: light quantity control lamp
100: lamp
200: screen
300: screen driver

Claims (5)

a lamp 100 for generating light simulating sunlight;
a screen 200 disposed on the light emitting surface of the lamp to partially block light emitted from the lamp; and
Including a screen driver 300 for moving the screen from the light emitting surface,
The screen 200,
a first screen 200-1 having a first transmittance;
a second screen 200-2 having a second transmittance; and
Including an N-th screen (200-N) having an N-th transmittance (in this case, N is a natural number greater than 2),
The first screen, the second screen and the N-th screen are connected in a side-by-side form so as to sequentially contact the light emitting surface according to movement,
a secondary screen 200 ′ arranged side by side at the bottom of the screen in the same shape as the screen 200 ; and
Light quantity control lamp using a screen, characterized in that it further comprises a secondary screen driver (300') for moving the secondary screen from the light emitting surface. delete The method according to claim 1,
The screen driver,
a first roller disposed on one side of the light emitting surface and sequentially receiving or withdrawing the first screen and the second screen according to rotation by fixing an end of the first screen; and
The amount of light using a screen, characterized in that it includes a second roller disposed at a position symmetrical to the first roller and sequentially receiving or withdrawing the N-th screen and the second screen in accordance with the rotation of the first roller. adjustable lamp. 4. The method of claim 3,
Light quantity control lamp using a screen, characterized in that it further comprises a gap adjuster for adjusting the distance between the light emitting surface and the screen driver. A light quantity control lamp using the screen disclosed in any one of claims 1, 3 to 4; and
A solar simulating device comprising a sensor that is spaced apart from the screen by a predetermined distance and measures the amount of light transmitted through the screen.

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