Light reflecting device for a projection system

Abstract

The application relates to the technical field of medical examination, and discloses a light reflection device for a projection system, which comprises a lower reflection sheet and an upper reflection sheet, limit grooves are arranged on the two sides of the lower reflection sheet and the upper reflection sheet, the limit grooves are matched with inclined seats, the inclined seats drive the whole reflection device to move synchronously in the movement process of the inclined device, the distance between the reflection device and an irradiation lamp is changed, the intensity of the diffuse reflection of the light projected on the surface of the reflection device after the irradiation lamp is adjusted, when the light intensity needs to be increased, the distance between the reflection device and the irradiation lamp is reduced by rotating an adjusting screw rod, at this moment, the intensity of the diffuse reflection is reduced and the light intensity is increased, when the light intensity needs to be reduced, the distance between the reflection device and the irradiation lamp is increased by rotating the adjusting screw rod, at this moment, the intensity of the diffuse reflection is increased and the light intensity is reduced, the device can automatically adjust the light intensity according to the use condition of a user, and the practicability of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of medical examination technology, specifically to a light reflection device for a projection system. Background Technology

[0002] The tongue is an important organ in the human body. It is the primary and only organ responsible for taste. The tongue can directly or indirectly reflect a person's physical condition. In the diagnosis process of traditional Chinese medicine, tongue diagnosis is a very important step. Tongue diagnosis only requires the patient's tongue image and does not require the assistance of complicated diagnostic instruments. It can quickly reveal some preliminary disease conditions of the patient's body. This diagnostic method has the advantages of speed, low cost and good results.

[0003] Although existing tongue diagnosis methods have many advantages, traditional methods often use small flashlights for direct illumination. However, the intensity of these lights is too high, causing the tongue to appear as a whitish exposed area, making it impossible to properly identify the white coating on the tongue. Therefore, this application proposes a light reflection device for a projection system to solve the aforementioned problems. Summary of the Invention

[0004] In view of the shortcomings of existing light reflection devices for projection systems mentioned in the background art, the present invention provides a light reflection device for projection systems, which has the advantage of using diffuse reflection to avoid overexposure caused by direct light, thus solving the problems in the background art.

[0005] This invention provides the following technical solution: a light reflecting device for a projection system, comprising an inspection chamber, an observation hole on the front near the top of the inspection chamber, a placement hole on the back of the inspection chamber, an upper head support fixedly installed on the inner wall of the inspection chamber above the placement hole, a lower head support fixedly installed on the inner wall of the inspection chamber below the placement hole, an illumination lamp fixedly installed on the inner wall of the inspection chamber below the observation hole, adjustment devices fixedly installed on both sides of the outer surface of the inspection chamber, a rotating device movably installed inside the adjustment device, an tilting device and a reflecting device movably fitted on the outer surface of the rotating device, and stroke holes II on both sides of the inspection chamber near the adjustment devices, the rotating device cooperating with the stroke holes II.

[0006] Preferably, the adjusting device includes an adjusting frame, a rotating device is movably installed inside the adjusting frame, a limiting guide rail is fixedly installed on one side of the inner cavity of the adjusting frame, the rotating device cooperates with the limiting guide rail, a stroke hole I is opened on the inner cavity of the adjusting frame near the back, a stroke side hole is opened on the other side of the inner cavity of the adjusting frame, an adjusting threaded rod is movably sleeved on the top of the adjusting frame, and the adjusting threaded rod extends to the bottom of the adjusting frame.

[0007] Preferably, the rotating device includes a travel bracket. A limiting groove is formed on one side of both the top and bottom plates of the travel bracket. Threaded holes are formed on both the top and bottom plates of the travel bracket near the limiting grooves. The limiting grooves cooperate with the limiting guide rails. The threaded holes are threadedly connected to the adjusting threaded rod. A main knob rod is movably sleeved on the front of the travel bracket. A main gear is fixedly sleeved on one end of the outer surface of the main knob rod. An inclined device is movably sleeved on the outer surface of the main knob rod near the main gear. A limiting sleeve is fixedly sleeved on the outer surface of the main knob rod near the main gear. A reflective device is movably sleeved on the outer surface of the limiting sleeve. A connecting plate is fixedly installed on the top of the bottom plate of the travel bracket away from the limiting groove. A side plate is fixedly installed on one side of the connecting plate. A secondary knob rod is movably sleeved on one side of the side plate. A secondary gear is fixedly installed at one end of the secondary knob rod.

[0008] Preferably, the tilting device includes a circular plate, which is movably sleeved with a limiting sleeve. A pad is fixedly installed on one side of the circular plate, and a tilting seat is fixedly installed on one side of the pad near the top. The tilting seat cooperates with the reflecting device.

[0009] Preferably, the reflecting device includes a lower reflector and an upper reflector. Limiting grooves are formed on both sides of the lower and upper reflectors. The limiting grooves cooperate with the inclined seat. A resistance rod is fixedly installed on one side of the lower reflector and is movably sleeved with the upper reflector. A sliding conductive sleeve is fixedly installed on one side of the upper reflector and is movably sleeved with the resistance rod. Both the lower and upper reflectors mesh with the main gear through gear teeth.

[0010] Preferably, the secondary gear meshes with the circular plate.

[0011] Preferably, the output end of the sliding conductive sleeve is connected to the input end of the illumination lamp via a signal connection.

[0012] The present invention has the following beneficial effects:

[0013] 1. The present invention has an illumination lamp fixedly installed on the inner wall of the inspection room below the observation hole. When the illumination lamp is emitting light, because the illumination lamp is located below the observation hole and the light emitted by the illumination lamp is directed diagonally upward, the light cannot pass directly through the observation hole, thereby avoiding the problem of glare caused by the light being directly projected onto the observer's eyes.

[0014] 2. In this invention, an adjusting threaded rod is movably sleeved on the top of the adjusting frame, extending to the bottom of the adjusting frame. The adjusting threaded rod is threadedly connected to the rotating device, causing the rotating device to move vertically during rotation. A circular plate is movably sleeved with a limiting sleeve, causing the limiting sleeve to move synchronously with the circular plate as the rotating device moves vertically. Limiting grooves are provided on both sides of the lower and upper reflectors, which cooperate with the tilting seat, allowing the tilting seat to move the reflector during its movement. The device moves synchronously, thereby adjusting the distance between the reflector and the illumination lamp. This adjusts the intensity of diffuse reflection of the light emitted from the illumination lamp onto the surface of the reflector. When the light intensity needs to be increased, rotating the adjusting screw reduces the distance between the reflector and the illumination lamp, thus decreasing the intensity of diffuse reflection and increasing the light intensity. Conversely, when the light intensity needs to be decreased, rotating the adjusting screw increases the distance between the reflector and the illumination lamp, again increasing the intensity of diffuse reflection and decreasing the light intensity. This allows the device to automatically adjust the light intensity according to the user's needs, improving its practicality.

[0015] 3. In this invention, a main gear is fixedly sleeved on one end of the outer surface of the main knob rod. Rotating the main knob rod causes the main gear to rotate synchronously. Both the lower and upper reflective sheets mesh with the main gear through their teeth. As the main gear rotates, it causes the lower and upper reflective sheets to move closer or further apart. When the distance between the reflective device and the illumination lamp is adjusted to its minimum, and the patient's tongue coating is still not clearly visible, rotating the main knob rod in the forward direction causes the lower and upper reflective sheets to move further apart. This increases the surface area of ​​the reflective device involved in diffuse reflection, allowing more light to participate in diffuse reflection. In this way, the intensity of light projected onto the patient's tongue coating is increased, thereby increasing the brightness of the tongue coating surface and allowing the observer to observe it better. When the distance between the reflector and the illumination lamp is adjusted to the maximum and the brightness of the patient's tongue coating surface is still relatively high, the main knob is rotated in the opposite direction, causing the lower and upper reflectors to move closer to each other. At this time, the surface area of ​​the reflector participating in diffuse reflection decreases, thus reducing the amount of light participating in diffuse reflection, thereby reducing the intensity of light projected onto the patient's tongue coating, thereby reducing the brightness of the patient's tongue coating surface. This allows the observer to observe the patient's tongue coating better and improves the reliability of the device.

[0016] 4. This invention utilizes a secondary gear meshing with a circular plate, causing the secondary knob lever to rotate synchronously with the secondary gear. Due to the meshing between the secondary gear and the circular plate, the secondary gear rotates synchronously. Because the limiting groove cooperates with the tilting seat, the tilting seat tilts the limiting groove during the rotation of the circular plate, thus tilting the entire reflective device. When the light from the illumination lamp is diffusely reflected by the reflective device, resulting in excessive light passing through the observation hole and causing the observer to see a virtual image of the illumination lamp on the surface of the reflective device, leading to glare, or when less light is diffusely reflected and projected onto the patient's tongue, the tilt of the reflective device can be adjusted to improve these problems, further enhancing the practicality of the device.

[0017] 5. In this invention, the output end of the sliding conductive sleeve is connected to the input end of the illumination lamp via a signal connection. The resistance rod extending from the sliding conductive sleeve is connected in series to the power supply line of the illumination lamp. When the lower reflector and the upper reflector move closer together, the length of the resistance rod extending from the sliding conductive sleeve increases, thus increasing the total resistance and decreasing the luminous intensity of the illumination lamp. When the lower reflector and the upper reflector move further apart, the length of the resistance rod extending from the sliding conductive sleeve decreases, thus decreasing the total resistance and increasing the luminous intensity of the illumination lamp. This allows the device to have a wider adjustment range, thereby further improving its practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a right-side view of the structure of the present invention;

[0020] Figure 3 The structure of this invention Figure 2 Schematic diagram of cross section in the middle AA direction;

[0021] Figure 4 The structure of this invention Figure 3 Schematic diagram of cross section in the middle BB direction;

[0022] Figure 5 The structure of this invention Figure 4 Schematic diagram of cross-section in the CC direction;

[0023] Figure 6 This is a schematic diagram of the structural adjustment device of the present invention;

[0024] Figure 7 This is a right-side view of the structural adjustment device of the present invention;

[0025] Figure 8This is a front view schematic diagram of the structural adjustment device of the present invention;

[0026] Figure 9 The structure of this invention Figure 8 Schematic cross-section along the DD direction;

[0027] Figure 10 The structure of this invention Figure 9 Schematic diagram of cross section in the middle EE direction;

[0028] Figure 11 This is a schematic diagram of the rotating device of the present invention;

[0029] Figure 12 This is a front view schematic diagram of the rotating device of the present invention;

[0030] Figure 13 The structure of this invention Figure 12 Schematic diagram of cross-section in the middle FF direction;

[0031] Figure 14 This is a schematic diagram of the tilting device of the present invention;

[0032] Figure 15 This is a front view schematic diagram of the tilting device of the present invention;

[0033] Figure 16 The structure of this invention Figure 15 Schematic diagram of cross-section in the GG direction;

[0034] Figure 17 This is a schematic diagram of the reflective device structure of the present invention;

[0035] Figure 18 This is a right-side view of the structural reflection device of the present invention;

[0036] Figure 19 The structure of this invention Figure 18 Schematic diagram of the HH cross section.

[0037] In the diagram: 1. Inspection chamber; 2. Observation hole; 3. Placement hole; 4. Upper head support; 5. Lower head support; 6. Illumination lamp; 7. Adjustment device; 71. Adjustment frame; 72. Limiting guide rail; 73. Stroke hole I; 74. Stroke side hole; 75. Adjusting threaded rod; 8. Rotating device; 81. Stroke support; 82. Limiting slide groove; 83. Threaded hole; 84. Main knob rod; 85. Main gear; 86. Limiting sleeve; 87. Connecting plate; 88. Side plate; 89. Secondary knob rod; 801. Secondary gear; 9. Tilting device; 91. Circular plate; 92. Pad; 93. Tilting seat; 10. Reflecting device; 101a. Lower reflector; 101b. Upper reflector; 102. Limiting groove; 103. Resistance rod; 104. Sliding conductive sleeve; 11. Stroke hole II. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1-5 A light reflecting device for a projection system includes an inspection chamber 1. An observation hole 2 is provided on the front of the inspection chamber 1 near the top, and a placement hole 3 is provided on the back of the inspection chamber 1. An upper head support 4 is fixedly installed on the inner wall of the inspection chamber 1 above the placement hole 3, and a lower head support 5 is fixedly installed on the inner wall of the inspection chamber 1 below the placement hole 3. An illumination lamp 6 is fixedly installed on the inner wall of the inspection chamber 1 below the observation hole 2. During the illumination process, because the illumination lamp 6 is located below the observation hole 2 and the light emitted by the illumination lamp 6 is directed obliquely upwards, the light cannot directly pass through the observation hole 2, thus avoiding glare caused by direct light projection onto the observer's eyes. Adjustment devices 7 are fixedly installed on both sides of the outer surface of the inspection chamber 1. A rotating device 8 is movably installed inside the adjustment device 7. An tilting device 9 and a reflecting device 10 are movably fitted onto the outer surface of the rotating device 8. Stroke holes II 11 are provided on both sides of the inspection chamber 1 near the adjustment device 7, and the rotating device 8 cooperates with the stroke holes II 11.

[0040] Please see Figures 1-10 The adjusting device 7 includes an adjusting frame 71, and a rotating device 8 is movably installed inside the adjusting frame 71. A limit guide rail 72 is fixedly installed on one side of the inner cavity of the adjusting frame 71. The rotating device 8 cooperates with the limit guide rail 72. A stroke hole I 73 is opened on the inner cavity of the adjusting frame 71 near the back. A stroke side hole 74 is opened on the other side of the inner cavity of the adjusting frame 71. An adjusting threaded rod 75 is movably sleeved on the top of the adjusting frame 71. The adjusting threaded rod 75 extends to the bottom of the adjusting frame 71. The adjusting threaded rod 75 and the rotating device 8 are connected by a thread, so that when the adjusting threaded rod 75 rotates, it will drive the rotating device 8 to move in the vertical direction.

[0041] Please see Figures 1-13The rotating device 8 includes a travel bracket 81. Limit grooves 82 are provided on one side of both the top and bottom plates of the travel bracket 81. Threaded holes 83 are provided on both the top and bottom plates of the travel bracket 81 near the limit grooves 82. The limit grooves 82 cooperate with the limit guide rail 72. The threaded holes 83 are threadedly connected to the adjusting threaded rod 75. A main knob rod 84 is movably sleeved on the front of the travel bracket 81. A main gear 85 is fixedly sleeved on one end of the outer surface of the main knob rod 84, so that rotating the main knob rod 84 will drive the main gear 85. Gear 85 rotates synchronously. The outer surface of the main gear 85 is fitted with an inclined device 9 through a gear movable sleeve. The outer surface of the main knob rod 84 is fixedly fitted with a limiting sleeve 86 near the main gear 85. The outer surface of the limiting sleeve 86 is movably fitted with a reflective device 10. A connecting plate 87 is fixedly installed on the top of the bottom plate of the stroke bracket 81 on the side away from the limiting slide groove 82. A side plate 88 is fixedly installed on one side of the connecting plate 87. A secondary knob rod 89 is movably fitted on one side of the side plate 88. A secondary gear 801 is fixedly installed at one end of the secondary knob rod 89.

[0042] Please see Figures 1-5 and Figures 11-16 The tilting device 9 includes a circular plate 91, which is movably connected to the limiting sleeve 86, so that when the rotating device 8 moves in the vertical direction, the limiting sleeve 86 will drive the circular plate 91 to move synchronously. A pad 92 is fixedly installed on one side of the circular plate 91, and a tilting seat 93 is fixedly installed on one side of the pad 92 near the top. The tilting seat 93 cooperates with the reflecting device 10.

[0043] Please see Figures 1-19The reflecting device 10 includes a lower reflecting sheet 101a and an upper reflecting sheet 101b. Limiting grooves 102 are provided on both sides of the lower reflecting sheet 101a and the upper reflecting sheet 101b. The limiting grooves 102 cooperate with the tilting seat 93, so that during the movement of the tilting device 9, the tilting seat 93 will drive the reflecting device 10 to move synchronously, thereby adjusting the distance between the reflecting device 10 and the illumination lamp 6. This adjusts the intensity of diffuse reflection of the light from the illumination lamp 6 projected onto the surface of the reflecting device 10. When it is necessary to increase the light intensity, the adjusting screw rod 75 is rotated to reduce the distance between the reflecting device 10 and the illumination lamp 6. At this time, the intensity of diffuse reflection decreases and the light intensity increases. When it is necessary to reduce the light intensity, the adjusting screw rod 75 is rotated to increase the distance between the reflecting device 10 and the illumination lamp 6. At this time, the intensity of diffuse reflection increases and the light intensity decreases. This allows the device to automatically adjust the light intensity according to the user's usage, improving the practicality of the device. A resistance rod 103 is fixedly installed on one side of the lower reflector 101a, and the resistance rod 103 is movably sleeved with the upper reflector 101b. A sliding conductive sleeve 104 is fixedly installed on one side of the upper reflector 101b, and the sliding conductive sleeve 104 is movably sleeved with the resistance rod 103. Both the lower reflector 101a and the upper reflector 101b mesh with the main gear 85 through gear teeth. During the rotation of the main gear 85, the lower reflector 101a and the upper reflector 101b will move closer to each other or further away from each other. When the distance between the adjusting reflector 10 and the illumination lamp 6 is minimized but the patient's tongue coating cannot be clearly observed, the main knob 84 is rotated forward to move the lower reflector 101a and the upper reflector 101b further away from each other. At this time, the reflector 101a... The increased surface area of ​​the reflector 10 participating in diffuse reflection allows more light to participate in the diffuse reflection, thereby increasing the intensity of light projected onto the patient's tongue coating and thus increasing the brightness of the tongue coating surface, allowing the observer to observe better. When the distance between the reflector 10 and the illumination lamp 6 is adjusted to the maximum and the brightness of the patient's tongue coating surface is still relatively high, the main knob 84 is rotated in the opposite direction, causing the lower reflector 101a and the upper reflector 101b to move closer to each other. At this time, the surface area of ​​the reflector 10 participating in diffuse reflection decreases, allowing less light to participate in the diffuse reflection, thereby reducing the intensity of light projected onto the patient's tongue coating and thus reducing the brightness of the patient's tongue coating surface. This allows the observer to observe the patient's tongue coating better and improves the reliability of the device.

[0044] Please see Figures 1-5 and Figure 11-19The auxiliary gear 801 meshes with the circular plate 91, causing the auxiliary knob rod 89 to rotate synchronously during rotation. Because the auxiliary gear 801 and the circular plate 91 mesh, the auxiliary gear 801 rotates synchronously. Since the limiting groove 102 cooperates with the tilting seat 93, the tilting seat 93 causes the limiting groove 102 to tilt during the rotation of the circular plate 91, thus tilting the entire reflecting device 10. When the light projected by the illumination lamp 6 is diffusely reflected by the reflecting device 10, resulting in excessive light passing through the observation hole 2 and causing the observer to see a virtual image of the illumination lamp 6 on the surface of the reflecting device 10, causing glare, or when less light is diffusely reflected and projected onto the patient's tongue, the tilt of the reflecting device 10 can be adjusted to improve this problem, further enhancing the practicality of the device.

[0045] Please see Figures 1-5 and Figures 17-19 The output end of the sliding conductive sleeve 104 is connected to the input end of the illumination lamp 6 via a signal connection. The part of the resistor rod 103 extending from the sliding conductive sleeve 104 is connected in series to the power supply line of the illumination lamp 6. When the lower reflector 101a and the upper reflector 101b move closer to each other, the length of the resistor rod 103 extending from the sliding conductive sleeve 104 increases, the total resistance increases, and the luminous intensity of the illumination lamp 6 decreases. When the lower reflector 101a and the upper reflector 101b move further apart, the length of the resistor rod 103 extending from the sliding conductive sleeve 104 decreases, the total resistance decreases, and the luminous intensity of the illumination lamp 6 increases. This gives the device a wider adjustment range, thereby further improving the practicality of the device.

[0046] The method of using this invention is as follows:

[0047] During use, when the illumination lamp 6 is emitting light, because the illumination lamp 6 is located below the observation hole 2 and the light emitted by the illumination lamp 6 is directed obliquely upwards, the light cannot directly pass through the observation hole 2. The adjusting threaded rod 75 is threadedly connected to the rotating device 8, so that when the adjusting threaded rod 75 rotates, it drives the rotating device 8 to move vertically. As the rotating device 8 moves vertically, the limiting sleeve 86 drives the circular plate 91 to move synchronously. During the movement of the tilting device 9, the tilting seat 93 drives the reflector 10 to move synchronously, thereby adjusting the distance between the reflector 10 and the illumination lamp 6, thus adjusting the intensity of diffuse reflection of the light from the illumination lamp 6 projected onto the surface of the reflector 10. When it is necessary to increase the light intensity, rotating the adjusting screw 75 reduces the distance between the reflector 10 and the illumination lamp 6, thus decreasing the intensity of diffuse reflection and increasing the light intensity. Conversely, when it is necessary to decrease the light intensity, rotating the adjusting screw 75 increases the distance between the reflector 10 and the illumination lamp 6, again increasing the intensity of diffuse reflection and decreasing the light intensity. During rotation, the secondary knob 89 drives the secondary gear 801 to rotate synchronously. Because the secondary gear 801 meshes with the circular plate 91, it rotates synchronously. Due to the engagement of the limiting groove 102 and the tilting seat 93, the tilting seat 93 causes the limiting groove 102 to tilt during the rotation of the circular plate 91, thereby causing the reflector 10 to tilt as a whole. When the light from the illumination lamp 6 is diffusely reflected by the reflector 10, resulting in excessive light passing through the observation hole 2 and causing the observer to see a virtual image of the illumination lamp 6 on the surface of the reflector 10, thus causing glare, or when less light is projected onto the patient's tongue after diffuse reflection by the reflector 10, the tilt of the reflector 10 can be adjusted to improve this problem. Rotating the main knob 84 will drive the main gear 85 to rotate synchronously. During rotation, the main gear 85 will cause the lower reflector 101a and the upper reflector 101b to move closer or further apart. If, even when the distance between the reflector 10 and the illumination lamp 6 is adjusted to its minimum, the patient's tongue coating still cannot be clearly observed, then rotating the knob forward... The main knob 84 is turned to move the lower reflector 101a and the upper reflector 101b further apart. This increases the surface area of ​​the reflective device 10 involved in diffuse reflection, allowing more light to participate in the diffuse reflection and thus increasing the intensity of light projected onto the patient's tongue coating. This improves the brightness of the tongue coating surface, allowing for better observation. When the distance between the reflective device 10 and the illumination lamp 6 is adjusted to its maximum, but the brightness of the patient's tongue coating surface is still high, the main knob 84 is turned in the opposite direction to move the lower reflector 101a and the upper reflector 101b closer together. This reduces the surface area of ​​the reflective device 10 involved in diffuse reflection, resulting in less light participating in the diffuse reflection and thus reducing the intensity of light projected onto the patient's tongue coating.This reduces the brightness of the patient's tongue coating, causing the lower reflector 101a and upper reflector 101b to move closer together. At this time, the length of the resistance rod 103 extending from the sliding conductive sleeve 104 increases, resulting in an increase in total resistance and a decrease in the luminous intensity of the illumination lamp 6. Conversely, when the lower reflector 101a and upper reflector 101b move further apart, the length of the resistance rod 103 extending from the sliding conductive sleeve 104 decreases, resulting in a decrease in total resistance and an increase in the luminous intensity of the illumination lamp 6. This allows the device to have a wider adjustment range.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A light reflecting device for a projection system, comprising an examination chamber (1), characterized in that: An observation hole (2) is provided on the front of the inspection chamber (1) near the top. A placement hole (3) is provided on the back of the inspection chamber (1). An upper head support (4) is fixedly installed on the inner wall of the inspection chamber (1) above the placement hole (3). A lower head support (5) is fixedly installed on the inner wall of the inspection chamber (1) below the placement hole (3). An illumination lamp (6) is fixedly installed on the inner wall of the inspection chamber (1) below the observation hole (2). An adjustment device (7) is fixedly installed on both sides of the outer surface of the inspection chamber (1). A rotating device (8) is movably installed inside the adjustment device (7). An tilting device (9) and a reflecting device (10) are movably sleeved on the outer surface of the rotating device (8). A stroke hole II (11) is provided on both sides of the inspection chamber (1) near the adjustment device (7). The rotating device (8) cooperates with the stroke hole II (11). The rotating device (8) includes a stroke bracket (81), a main knob rod (84) is movably sleeved on the front of the stroke bracket (81), a main gear (85) is fixedly sleeved on the outer surface of the main knob rod (84) near one end, an inclined device (9) is movably sleeved on the outer surface of the main gear (85) through the gear, a limiting sleeve (86) is fixedly sleeved on the outer surface of the main knob rod (84) near the main gear (85), and a reflective device (10) is movably sleeved on the outer surface of the limiting sleeve (86). The tilting device (9) includes a circular plate (91), which is movably connected to the limiting sleeve (86). A pad (92) is fixedly installed on one side of the circular plate (91), and a tilting seat (93) is fixedly installed on one side of the pad (92) near the top. The tilting seat (93) cooperates with the reflecting device (10). The reflecting device (10) includes a lower reflector (101a) and an upper reflector (101b). Limiting grooves (102) are provided on both sides of the lower reflector (101a) and the upper reflector (101b). The limiting grooves (102) cooperate with the tilting seat (93).

2. The light reflecting device for a projection system according to claim 1, characterized in that: The adjusting device (7) includes an adjusting frame (71), a rotating device (8) is movably installed inside the adjusting frame (71), a limiting guide rail (72) is fixedly installed on one side of the inner cavity of the adjusting frame (71), the rotating device (8) cooperates with the limiting guide rail (72), a stroke hole I (73) is opened on the inner cavity of the adjusting frame (71) near the back, a stroke side hole (74) is opened on the other side of the inner cavity of the adjusting frame (71), an adjusting threaded rod (75) is movably sleeved on the top of the adjusting frame (71), and the adjusting threaded rod (75) extends to the bottom of the adjusting frame (71).

3. A light reflecting device for a projection system according to claim 2, characterized in that: The top plate and bottom plate of the travel bracket (81) are provided with a limiting groove (82) on one side. The top plate and bottom plate of the travel bracket (81) are provided with a threaded hole (83) near the limiting groove (82). The limiting groove (82) cooperates with the limiting guide rail (72). The threaded hole (83) is connected to the adjusting threaded rod (75) by a threaded sleeve. A connecting plate (87) is fixedly installed on the top side of the bottom plate of the travel bracket (81) away from the limiting groove (82). A side plate (88) is fixedly installed on one side of the connecting plate (87). A secondary knob rod (89) is movably sleeved on one side of the side plate (88). A secondary gear (801) is fixedly installed at one end of the secondary knob rod (89).

4. A light reflecting device for a projection system according to claim 3, characterized in that: A resistor rod (103) is fixedly installed on one side of the lower reflector (101a), and the resistor rod (103) is movably sleeved with the upper reflector (101b). A sliding conductive sleeve (104) is fixedly installed on one side of the upper reflector (101b), and the sliding conductive sleeve (104) is movably sleeved with the resistor rod (103). Both the lower reflector (101a) and the upper reflector (101b) mesh with the main gear (85) through gear teeth.

5. A light reflecting device for a projection system according to claim 4, characterized in that: The auxiliary gear (801) meshes with the circular plate (91).

6. A light reflecting device for a projection system according to claim 5, characterized in that: The output end of the sliding conductive sleeve (104) is connected to the input end of the illumination lamp (6) via a signal connection.

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