Illumination intensity adjusting device of solar radiation test box

Abstract

The invention discloses an illumination intensity adjusting device of a solar radiation test box. The illumination intensity adjusting device comprises a light filtering net, a light filtering net connecting rod, an electric execution valve, a first shaft sleeve, a first connecting shaft and a light source device. An electric execution valve is arranged on the front side of the light source device; the electric execution valve is connected with the front side of the filter screen through a first connecting shaft, a first shaft sleeve and a filter screen connecting rod in sequence; a bearing seat mounting bracket is arranged at the upper part of the rear side wall of the light source device; a bearing seat is arranged on the bearing seat mounting bracket; and the bearing seat is connected with the rear side of the filter screen through a second connecting shaft, a second shaft sleeve and a filter screen connecting rod in sequence. The solar radiation test box is scientific in structural design, the illumination intensity provided for objects placed in the solar radiation test box can be conveniently adjusted, the test requirements of users can be better met, normal proceeding of an aging characteristic test can be guaranteed, and the solar radiation test box has great practical significance.

Description

Technical Field

[0001] The present invention relates to the technical field of solar radiation test chambers, and in particular to a device for adjusting the light intensity of a solar radiation test chamber. Background Art

[0002] Solar radiation test chambers are mainly used to simulate the solar radiation intensity of products under outdoor sunlight irradiation conditions in a laboratory, and then conduct aging characteristic tests of simulated sunlight and light on automotive parts, dyes, decorative materials and other items.

[0003] However, for existing solar radiation test chambers, they cannot conveniently adjust the light intensity provided to the items placed therein, and cannot better meet the test requirements of users.

[0004] Therefore, there is an urgent need to develop a technology at present, which can solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for adjusting the light intensity of a solar radiation test chamber in view of the technical defects existing in the prior art.

[0006] To this end, the present invention provides a device for adjusting the light intensity of a solar radiation test chamber, which is suspended on the inner wall of the top of a hollow solar radiation test chamber;

[0007] The device includes a filter screen, a filter screen connecting rod, an electric actuator, a first bushing, a first connecting shaft and a light source device;

[0008] An electric actuator is arranged on the front side of the light source device;

[0009] The electric actuator is sequentially connected to the front side of the filter screen through a first connecting shaft, a first bushing and a filter screen connecting rod;

[0010] An upper part of the rear side wall of the light source device is provided with a bearing seat mounting bracket;

[0011] A bearing seat is arranged on the bearing seat mounting bracket;

[0012] The bearing seat is sequentially connected to the rear side of the filter screen through a second connecting shaft, a second bushing and a filter screen connecting rod.

[0013] As can be seen from the technical solutions provided by the present invention above, compared with the prior art, the present invention provides a device for adjusting the light intensity of a solar radiation test chamber, with a scientific structural design, which can conveniently adjust the light intensity provided to the items placed in the solar radiation test chamber, better meet the test requirements of users, is beneficial to ensuring the normal progress of aging characteristic tests, and has great practical significance. Brief Description of the Drawings

[0014] Figure 1 Schematic three-dimensional structure diagram of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a non-working state;

[0015] Figure 2 Schematic exploded three-dimensional structure diagram of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a non-working state;

[0016] Figure 3 Front view of Embodiment 1 of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a non-working state;

[0017] Figure 4 Is along Figure 3 The cross-sectional view along the M-M line shown;

[0018] Figure 5 Top view of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a non-working state;

[0019] Figure 6 Schematic three-dimensional structure diagram of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a working state;

[0020] Figure 7 Schematic exploded three-dimensional structure diagram of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a working state;

[0021] Figure 8 Front view of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a working state;

[0022] Figure 9 Right side view of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a working state;

[0023] Figure 10 Top view of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a working state;

[0024] Figure 11 Front view of Embodiment 2 of a light intensity adjustment device for a solar radiation test chamber provided by the present invention when it is in a non-working state;

[0025] Figure 12 Is along Figure 11 The cross-sectional view along the N-N line shown;

[0026] Figure 13 Schematic diagram of the working state of an embodiment when a light intensity adjustment device for a solar radiation test chamber provided by the present invention is installed inside the top of a test chamber body;

[0027] Figure 14 is Figure 13 an enlarged schematic view of part I shown;

[0028] Figure 15 is a schematic diagram of the working state of another embodiment when the light intensity adjusting device of a solar radiation test chamber provided by the present invention is installed inside the top of a test chamber body;

[0029] In the figure, 1 is a filter screen, 2 is a filter screen connecting rod, 3 is an electric actuator valve, 4 is a counterweight, and 5 is a counterweight connecting rod;

[0030] 601 is a first bushing, 602 is a second bushing, 7 is a first connecting shaft, 8 is a bearing seat, 9 is an electric actuator valve mounting bracket, and 10 is a bearing seat mounting bracket;

[0031] 11 is a second connecting shaft, 12 is a light source device, 13 is a bracket, 14 is a frame, and 15 is a test chamber body. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] In the description of this patent, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific situations.

[0035] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless specifically defined otherwise.

[0036] See Figures 1 to 15 , the present invention provides a light intensity adjusting device for a solar radiation test chamber, and the device is suspended on the inner wall of the top of the hollow solar radiation test chamber;

[0037] The device includes a filter screen 1, a filter screen connecting rod 2, an electric actuator 3, a first bushing 601, a first connecting shaft 7, and a light source device 12;

[0038] An electric actuator 3 is arranged on the front side of the light source device 12;

[0039] It should be noted that the light source device 12 is used to emit light and perform the light illumination function, specifically, it is used to emit light in the directly downward direction.

[0040] The electric actuator 3 is sequentially connected to the front side of the filter screen 1 through a first connecting shaft 7, a first bushing 601, and a filter screen connecting rod 2;

[0041] An upper part of the rear side wall of the light source device 12 is provided with a bearing seat mounting bracket 10;

[0042] A bearing seat 8 is arranged on the bearing seat mounting bracket 10;

[0043] The bearing seat 8 is sequentially connected to the rear side of the filter screen 1 through a second connecting shaft 11, a second bushing 602, and a filter screen connecting rod 2.

[0044] In the present invention, specifically, the electric actuator 3 is used to drive the first connecting shaft 7 to rotate, thereby driving the first bushing 601, the filter screen connecting rod 2, and the filter screen 1 connected to the filter screen connecting rod 2 to rotate, so that the filter screen 1 filters the light emitted by the light source device 12, and further adjusts the light intensity provided by the light source device 12 to the articles placed inside the solar radiation test chamber (such as specific test objects for light aging).

[0045] In the present invention, specifically, the articles placed inside the solar radiation test chamber are located directly below the light source device 12.

[0046] In the present invention, specifically, the top view shape of the filter screen 1 is rectangular.

[0047] In the present invention, specifically, an electric actuator mounting bracket 9 is arranged on the upper part of the front side wall of the light source device 12;

[0048] An electric actuator 3 is provided on an electric actuator mounting bracket 9;

[0049] Specifically, the shape of the electric actuator mounting bracket 9 is L-shaped.

[0050] Specifically, a shaft hole (i.e., the output end shaft hole, which is an internal thread hole) on the electric actuator 3 is connected to one end of a first connecting shaft 7 (this end has an external thread);

[0051] It should be noted that the first connecting shaft 77 is tightly connected to the shaft hole on the electric actuator 3;

[0052] The other end of the first connecting shaft 7 is connected to the central position of the first shaft sleeve 601;

[0053] The first shaft sleeve 601 is also connected to one end of two filter screen connecting rods 2, and the other ends of these two filter screen connecting rods 2 are connected to one side of the filter screen 1.

[0054] Furthermore, the first shaft sleeve 601 and the first connecting shaft 7 are tightly connected using a flat key, specifically installed through the cooperation of the flat key and the keyway.

[0055] Specifically, the electric actuator 3 is fixedly connected to the electric actuator mounting bracket 9 using bolts.

[0056] Specifically, the electric actuator mounting bracket 9 is installed on the front side of the light source device 12 using bolts.

[0057] Specifically, two first connecting rod docking threaded holes are provided on the first shaft sleeve 601;

[0058] The two first connecting rod docking threaded holes are respectively threadedly connected to the two filter screen connecting rods 2.

[0059] It should be noted that when the two first connecting rod docking threaded holes are respectively threadedly connected to the two filter screen connecting rods 2, thread sealant is applied in the first connecting rod docking threaded holes to ensure the tightness of the threaded connection.

[0060] Furthermore, a second connecting rod docking threaded hole is also provided on the first shaft sleeve 601;

[0061] The second connecting rod docking threaded hole is threadedly connected to one end of a counterweight connecting rod 5;

[0062] The other end of the counterweight connecting rod 5 is fixedly connected to a counterweight 4.

[0063] It should be noted that thread sealant is applied in the second connecting rod docking threaded hole to ensure the tightness of the threaded connection.

[0064] That is to say, three threaded holes are opened on the first bushing 601, which are respectively and tightly connected to two filter screen link rods 2 and one counterweight link rod 5, and thread sealant is used to ensure the tightness of the threads.

[0065] Furthermore, for the two filter screen link rods 2 connected to the first bushing 601, these two filter screen link rods 2 are symmetrically distributed with the central axis of the counterweight link rod 5 as the axis of symmetry;

[0066] In the present invention, specifically, the central shaft hole on the bearing seat 8 is connected to one end of a second connecting shaft 11;

[0067] It should be noted that the second connecting shaft 11 is tightly locked and connected to the shaft hole on the bearing seat 8;

[0068] The other end of the first connecting shaft 7 is connected to the central position of a second bushing 602;

[0069] The second bushing 602 is connected to one end of two filter screen link rods 2, and the other ends of these two filter screen link rods 2 are connected to the rear side of the filter screen 1.

[0070] Specifically, the shape of the bearing seat mounting bracket 10 is L-shaped.

[0071] Specifically, the bearing seat 8 is fixedly connected to the bearing seat mounting bracket 10 using bolts;

[0072] Specifically, the second bushing 602 and the second connecting shaft 11 are tightly connected using a flat key, specifically installed through the cooperation of the flat key and the keyway;

[0073] Specifically, the bearing seat mounting bracket 10 is installed on the rear side of the light source device 12 using bolts.

[0074] Specifically, two first link rod docking threaded holes are provided on the second bushing 602;

[0075] The two first link rod docking threaded holes are respectively threadedly connected to the two filter screen link rods 2.

[0076] It should be noted that when the two first link rod docking threaded holes are respectively threadedly connected to the two filter screen link rods 2, thread sealant is applied in the first link rod docking threaded holes to ensure the tightness of the threaded connection.

[0077] Furthermore, one second link rod docking threaded hole is also provided on the second bushing 602;

[0078] The second link rod docking threaded hole is threadedly connected to one end of a counterweight link rod 5;

[0079] The other end of the counterweight link rod 5 is fixedly connected to a counterweight 4.

[0080] It should be noted that thread sealant is applied to the threaded holes for docking the second connecting rod to ensure the tightness of the threaded connection.

[0081] That is to say, three threaded holes are provided on the second bushing 602, which are respectively fixedly connected to two filter screen connecting rods 2 and one counterweight connecting rod 5, and thread sealant is used to ensure the thread tightness.

[0082] Similarly, for the two filter screen connecting rods 2 connected to the second bushing 602, these two filter screen connecting rods 2 are symmetrically distributed with the central axis of the counterweight connecting rod 5 as the axis of symmetry, and they are axially symmetric.

[0083] In the present invention, specifically, the light source device 12 includes a light source and a dimming switch (i.e., a dimmer);

[0084] The light source is connected to the dimming switch (i.e., the dimmer);

[0085] Specifically, the light source includes at least one halogen lamp;

[0086] Specifically, the halogen lamp is connected to a halogen lamp dimming switch (i.e., a dimmer);

[0087] The halogen lamp dimming switch (i.e., the dimmer) is used to adjust the illumination intensity of the halogen lamp.

[0088] Preferably, the halogen lamp is a metal halide lamp (also called a high-intensity ultraviolet halogen lamp).

[0089] It should be noted that the light source device 12 is a conventional component that is mature in the prior art and has been widely used in solar radiation test chambers. It is equipped with a light-emitting component (such as a halogen lamp) and a dimming switch (such as a halogen lamp dimming switch) supporting the light-emitting component.

[0090] Specifically, the light source device 12 may include a lamp tube and a lamp shade. The lamp tube can use a full-spectrum lamp tube produced by Osram. The model of the lamp tube can be selected according to actual test conditions. For example, a lamp tube with a model of HMI 2500W or HMI 4000W can be used; the lamp shade is a self-made sheet metal part; the light source device 12 can be composed of a sheet metal lamp shade and a lamp tube with a model of HMI 2500W or HMI 4000W produced by Osram, and is used as a light source for simulating solar radiation.

[0091] Specifically, the device of the present invention further includes a light sensor;

[0092] The light sensor is arranged inside the solar radiation test chamber and is located directly below the light source device 12 (i.e., in the irradiation area directly below).

[0093] In specific implementation, the light sensor is used to detect the light intensity inside the solar radiation test chamber, and use the detection results as the light intensity received by the objects placed inside the solar radiation test chamber (such as specific test objects for light aging), specifically the light intensity at the installation location.

[0094] In specific implementation, the device of the present invention may further include a control module;

[0095] A light sensor is connected to the control module and is used to send the light intensity it collects to the control module;

[0096] The control module is connected to the dimming switch (i.e., dimmer) on the light source device 12, and is used to adjust the light intensity value output by the light source device 12 itself through the dimming switch (i.e., dimmer) on the light source device 12, so that the light intensity collected by the light sensor (i.e., the light intensity received by the objects placed inside the solar radiation test chamber) is equal to the target intensity value pre-set by the user.

[0097] It should be noted that the control module can adjust the light intensity output value of the light source device 12 by sending an adjustment signal to the dimming switch (ie, dimmer) of the light source device 12 .

[0098] Furthermore, the control module is also connected to the control end of the electric actuator valve 3, and is used to control the rotation of the filter screen 1 by issuing a control signal, so that the filter screen 1 is located below the light source device 12, thereby enabling the filter screen 1 to filter the light emitted by the light source device 12, and adjust the actual light intensity value of the light from the light source device 12 after passing through the filter screen 1, so that the light intensity collected by the light sensor (that is, the light intensity received by the items placed inside the solar radiation test chamber) is equal to the target light intensity value preset by the user.

[0099] It should be noted that, in the present invention, the light intensity output value of the light source device 12 can be adjusted by the dimming switch (i.e., dimmer) of the light source device 12. The light intensity value actually possessed by the light of the light source device 12 after passing through the light filter 1 can also be further adjusted (e.g., further reduced) by controlling the rotation of the light filter 1, that is, the light intensity collected by the light sensor (i.e., the light intensity received by the items placed inside the solar radiation test chamber) can be adjusted.

[0100] For example, with respect to the present invention, on the one hand, the light intensity output value of the light source device 12 can be reduced by a dimming switch (i.e., a dimmer) on the light source device 12. On the other hand, by controlling the rotation of the filter screen 1, the light intensity value actually possessed by the light from the light source device 12 after passing through the filter screen 1 can be further reduced, that is, the light intensity collected by the light sensor is further reduced (i.e., the light intensity received by the items placed inside the solar radiation test chamber), so that the light intensity inside the solar radiation test chamber can meet the requirements of low intensity.

[0101] It should be noted that in specific implementation, for the present invention, when the light source in the light source device is a metal halide lamp, the metal halide lamp is used in conjunction with a dimmer, and the light intensity range can achieve 500 W / m 2 ~1120 W / m 2 . In addition, by rotating and adjusting the position of the filter screen 1 in the present invention, the light intensity provided by the light source device 12 to the items placed inside the solar radiation test chamber can be further adjusted to meet the test requirements of lower light intensity (for example, through the light-shielding operation of the filter screen 1, the light source device 12 can finally provide a light intensity of 50 W / m 2 to the test items).

[0102] In specific implementation, the light sensor is placed at the center position of the irradiation area directly below the light source device 12, and the control module can adopt a single-chip microcomputer control module or a PLC control module.

[0103] In the present invention, in specific implementation, the first bushing 601 and the electric actuator 3 are concentrically installed with the first connecting shaft 7 as the main driving mechanism;

[0104] The second bushing 602 and the bearing seat 8 are concentrically installed with the second connecting shaft 11 as the driven mechanism.

[0105] In the present invention, in specific implementation, the counterweight 4 is a solid stainless steel round bar with a circular hole in the middle, and the middle hole (i.e., the threaded hole) of the counterweight 4 is threadedly and fixedly connected to the counterweight connecting rod 5.

[0106] In the present invention, in specific implementation, the filter screen 1 and the filter screen connecting rod 2 are fixedly connected by bolts and nuts;

[0107] In the present invention, in specific implementation, both the filter screen connecting rod 2 and the counterweight connecting rod 5 are standard stainless steel solid round bars.

[0108] In the present invention, in specific implementation, the bearing seat 8 is a standard double-edge compact single bearing seat.

[0109] In the present invention, in specific implementation, the number of the counterweights 4 and the counterweight connecting rods 5 are two respectively; there are two sets of the filter screen connecting rods 2, and each set has two.

[0110] In the present invention, specifically, the electric actuator 3 is a conventional electrical component with mature prior art, and a market standard component can be selected to be used as the rotary drive element of the filter screen 1.

[0111] It should be noted that, specifically, the signal output mode of the electric actuator 3 is a digital signal, the voltage is DC24V, and the rotatable angle that can be controlled is 90°.

[0112] Specifically, the electric actuator 3 is an electric air valve actuator. An electric air valve actuator of Belimo brand can be adopted, specifically, the electric air valve actuator with the model of NM24AX produced by Belimo Automation Equipment Co., Ltd., which is used to perform a 90° rotation action on the first connecting shaft 7. That is, after the electric actuator 3 is powered on, it can be controlled through a digital signal to realize the operation of rotating the first connecting shaft 7 by 90° and resetting.

[0113] For the electric actuator, the function of the shaft hole on the electric actuator 3 is: to install shaft parts (such as the first connecting shaft 7). The structure of this shaft hole is a through hole, and there is a right-angle type card slot inside the hole. The shaft (such as the first connecting shaft 7) can be fixed firmly by tightening bolts. This shaft hole can rotate. After the electric actuator 3 receives the start signal, the right-angle type card slot inside the shaft hole can drive the shaft (such as the first connecting shaft 7) to rotate by 90°.

[0114] In the present invention, specifically, the filter screen 1 includes two layers of stainless steel meshes, which are formed by juxtaposing and stacking the two layers of stainless steel meshes. The two layers of stainless steel meshes are respectively a 20-mesh steel wire mesh with a wire diameter of 0.4 mm and a 40-mesh steel wire mesh with a wire diameter of 0.25 mm.

[0115] It should be noted that for the present invention, the filter screen 1 uses two layers of stainless steel meshes stacked and the four sides are edged with stainless steel plates to be assembled into an arc-shaped mesh sheet, and two through holes (threaded holes) are respectively opened on the front and back sides of the filter screen 1 for fastening and threaded connection with the filter screen connecting rod 2 (the end of the filter screen connecting rod 2 has an external thread, so as to be threadedly connected with the through hole).

[0116] Based on the light intensity adjusting device of a solar radiation test chamber provided by the above-mentioned present invention, see Figures 11 to 15 , the present invention also provides a solar radiation test chamber, which includes a hollow test chamber body 15;

[0117] The light intensity adjusting device of the solar radiation test chamber as described above is suspended on the inner wall of the top of the test chamber body 15.

[0118] In the present invention, specifically, the test chamber body is a sealed chamber.

[0119] In the present invention, specifically, at the central position on the top of the light source device 12, it is connected to the inner wall of the top of the test chamber body through a vertically distributed connecting rod.

[0120] In the present invention, specifically, a bracket 13 is provided on the upper part of the light source device 12;

[0121] The shape of the bracket 13 is "U" - shaped;

[0122] Specifically, when there is no requirement for frequent removal of the light source device 12, the central position on the top of the bracket 13 is fixedly connected to the top of the test chamber body through fastening bolts.

[0123] It should be noted that when there is no requirement for frequent removal of the light source device 12, it can be directly installed on the top plate of the test chamber body through fastening bolts (the fastening bolts pass through the top of the bracket 13 and the top of the test chamber body simultaneously).

[0124] Specifically, when the light source device 12 needs to be frequently removed, the solar radiation test chamber further includes a frame 14;

[0125] A plurality of light source devices 12 are installed on the frame 14.

[0126] The top of the frame 14 is fixedly connected to the top of the test chamber body.

[0127] Furthermore, the bracket 13 provided on the upper part of the light source device 12 is connected to the frame 14;

[0128] The two ends of the top of the frame 14 are respectively fixedly connected to the top of the test chamber (specifically, the external frame beam inside the top of the test chamber) above the top of the test chamber body 15 through two electric hoists.

[0129] It should be noted that when the light source device 12 needs to be frequently removed, a plurality of light source devices 12 can be installed on a frame 14, and the frame is hoisted in the inner direction of the top of the test chamber body through an electric hoist (that is, through an electric hoist). Among them, the top of the electric hoist is connected to the top of the test chamber above the test chamber body 15 (specifically, the external frame beam inside the top of the test chamber), and the lower hanging rope of the electric hoist vertically penetrates through the top plate of the test chamber body 15 (with a reserved through - hole) from top to bottom and then is connected to the top of the frame 14 for installing the light source device 12.

[0130] It should be noted that the electric hoist is a common small lifting device in the prior art for vertical lifting function, which will not be elaborated here.

[0131] To more clearly understand the technical solution of the present invention, the working principle of the present invention is described below.

[0132] First, install the light intensity adjustment device of the solar radiation test chamber provided by the present invention inside the solar radiation test chamber;

[0133] Then, during the test, the light intensity inside the test chamber is monitored in real time through a light sensor;

[0134] Regarding the light intensity received by the items placed inside the solar radiation test chamber (i.e., the light intensity collected by the light sensor), when the target light intensity value pre-set by the user and required by the test is a low intensity (for example, a light intensity of 50 W / m 2 ), if the measured value inside the test chamber at this time is greater than 50 W / ㎡, the control module can control the electric actuator 3 to act, causing it to rotate 90°. During the rotation process, the electric actuator 3 drives the first connecting shaft 7 and the first bushing 601 installed on the first connecting shaft 7 to rotate together. At this time, the first connecting shaft 7 serves as the driving shaft, and through the filter screen 1 as an intermediate medium, it drives the first connecting shaft 11, which serves as the driven shaft, to rotate. Finally, the operation of rotating the filter screen 1 and the counterweight 4 by 90° is realized (i.e., from the Figures 1 to 5 state to the Figures 6 to 10 state). At this time, the filter screen 1 plays a role in filtering the light intensity of the light source device 12. The control module can adjust the output value of the light intensity of the light source device 12 according to the real-time light intensity data collected by the light sensor, and finally make the light intensity received by the items placed inside the solar radiation test chamber (i.e., the light intensity collected by the light sensor) reach the target light intensity value pre-set by the user.

[0135] Regarding the light intensity received by the items placed inside the solar radiation test chamber (i.e., the light intensity collected by the light sensor), when the target light intensity value pre-set by the user and required by the test is a high intensity (for example, a light intensity of 1000 W / m 2 ), the control module controls the electric actuator 3 to rotate back from 90° to 0°. The filter screen 1 no longer blocks the light emitted by the light source device 12, that is, it no longer filters the light. And the control module adjusts the output value of the light intensity of the light source device 12 according to the real-time light intensity data collected by the light sensor, and finally makes the light intensity received by the items placed inside the solar radiation test chamber (i.e., the light intensity collected by the light sensor) reach the target light intensity value pre-set by the user.

[0136] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A light intensity adjusting device for a solar radiation test chamber, characterized in that, It includes a filter screen (1), a filter screen connecting rod (2), an electric actuator (3), a first bushing (601), a first connecting shaft (7), and a light source device (12); An electric actuator (3) is arranged on the front side of the light source device (12); The electric actuator (3) is sequentially connected to the front side of the filter screen (1) through a first connecting shaft (7), a first bushing (601), and a filter screen connecting rod (2); An upper part of the rear side wall of the light source device (12) is provided with a bearing seat mounting bracket (10); A bearing seat (8) is arranged on the bearing seat mounting bracket (10); The bearing seat (8) is sequentially connected to the rear side of the filter screen (1) through a second connecting shaft (11), a second bushing (602), and a filter screen connecting rod (2).

2. The light intensity adjusting device of the solar radiation test chamber according to claim 1, characterized in that, The electric actuator (3) is used to drive the first connecting shaft (7) to rotate, thereby driving the first bushing (601), the filter screen connecting rod (2), and the filter screen (1) connected to the filter screen connecting rod (2) to rotate, so that the filter screen (1) filters the light emitted by the light source device (12), and further adjusts the light intensity provided by the light source device (12) to the articles placed inside the solar radiation test chamber.

3. The light intensity adjusting device of the solar radiation test chamber according to claim 1, characterized in that, The articles placed inside the solar radiation test chamber are located directly below the light source device (12); and / or, The top view shape of the filter screen (1) is rectangular; and / or, An upper part of the front side wall of the light source device (12) is provided with an electric actuator mounting bracket (9); The electric actuator (3) is arranged on the electric actuator mounting bracket (9).

4. The light intensity adjusting device of the solar radiation test chamber according to claim 1, characterized in that, A shaft hole on the electric actuator (3) is connected to one end of a first connecting shaft (7); The other end of the first connecting shaft (7) is connected to the central position of the first bushing (601); The first bushing (601) is further connected to one ends of two filter screen connecting rods (2), and the other ends of these two filter screen connecting rods (2) are connected to one side of the filter screen (1).

5. The light intensity adjusting device of the solar radiation test chamber according to claim 4, characterized in that, A second connecting rod docking threaded hole is further arranged on the first bushing (601); The second connecting rod docking threaded hole is threadedly connected to one end of a counterweight connecting rod (5); The other end of the counterweight connecting rod (5) is fixedly connected to a counterweight (4); For the two filter screen connecting rods (2) connected to the first bushing (601), these two filter screen connecting rods (2) are axially symmetrically distributed with the central axis of the counterweight connecting rod (5) as the axis of symmetry.

6. The light intensity adjusting device of the solar radiation test chamber according to claim 1, characterized in that, A central shaft hole on the bearing seat (8) is connected to one end of a second connecting shaft (11); The other end of the first connecting shaft (7) is connected to the central position of a second bushing (602); The second bushing (602) is connected to one ends of two filter screen connecting rods (2), and the other ends of these two filter screen connecting rods (2) are connected to the rear side of the filter screen (1).

7. The light intensity adjusting device of the solar radiation test chamber according to claim 6, characterized in that, A second connecting rod docking threaded hole is further arranged on the second bushing (602); The second connecting rod docking threaded hole is threadedly connected to one end of a counterweight connecting rod (5); The other end of the counterweight connecting rod (5) is fixedly connected to a counterweight (4); For the two filter mesh connecting rods (2) connected to the second shaft sleeve (602), the two filter mesh connecting rods (2) are symmetrically distributed with the central axis of the counterweight connecting rod (5) as the axis of symmetry.

8. The light intensity adjusting device of the solar radiation test chamber according to claim 1, wherein The light source device (12) includes a light source and a dimming switch; The light source is connected to the dimmer switch.

9. The light intensity adjusting device of the solar radiation test chamber according to any one of claims 1 to 8, characterized in that The device is hung on the top inner wall of the hollow solar radiation test box; The device also includes a light sensor; the light sensor is arranged in the solar radiation test box and is located directly below the light source device (12).

10. The light intensity adjustment device of the solar radiation test chamber according to claim 9, characterized in that, A light sensor is used to detect the light intensity inside the solar radiation test chamber and use the detection result as the light intensity received by the objects placed inside the solar radiation test chamber; The device also includes a control module; A light sensor is connected to the control module and is used to send the light intensity it collects to the control module; The control module is connected to the dimming switch provided on the light source device (12) and is used to adjust the light intensity value output by the light source device (12) itself through the dimming switch provided on the light source device (12) so that the light intensity collected by the light sensor is equal to the target light intensity value preset by the user.

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