A lamp cap light blocking structure

Abstract

The utility model relates to a lamp cap light blocking structure, including the light blocking board of setting between the light emitting unit and the light emitting component, be equipped with the light transmission hole of allowing the emergent light of light emitting unit to pass on the light blocking board, be connected with the drive assembly of control its movement to block the light on the light blocking board, the drive assembly controls drive through the energy storage module, the setting structure of light blocking board fully considered the lamp interior space layout. Reasonably utilize the space between light emitting unit and light emitting component, neither influence lamp normal light emission, and also leave enough space for the installation and action of light blocking board. The setting of energy storage module can realize the automatic control drive assembly work of power failure, whether it is daily power failure, power failure or human being closes the power supply, once the equipment power failure, energy storage module can control drive assembly accurate control light blocking board movement. The whole process does not need manual intervention, efficient and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lamps and lanterns especially, relate to a lamp cap light blocking structure. BACKGROUND

[0002] In the field of professional lamps such as searchlights or stage lights, the lamp head, as the core light-emitting component, usually integrates multiple light-emitting units. These light-emitting units bear the heavy responsibility of projecting light outward. To achieve precise and high-quality lighting effects, the light-emitting position of each light-emitting unit is precisely correspondingly provided with a lens. According to the principle of optics, the lens can make fine adjustments such as focusing, diverging, or uniform light of the light emitted by the light-emitting unit, thereby meeting the lighting needs in different scenarios, such as strong light focusing in long-distance search, multi-angle light and shadow modeling in stage performances, etc.

[0003] However, when the lamp is applied to outdoor environments, it faces a thorny hidden danger. During the idle and non-use stage of the lamp, external sunlight becomes a potential "destroyer". Since the lens has a light-concentrating property, after the sunlight passes through the lens, the light will be highly concentrated. At this time, if the light-emitting unit happens to be near the focal point of the lens, the concentrated sunlight energy will be highly concentrated on the surface of the light-emitting unit. The light-emitting unit is mostly composed of semiconductor materials or other precise optical and electronic components that are sensitive to temperature. They have certain limits to the temperature they can withstand. The high heat generated by the long-term focusing of sunlight is likely to exceed their tolerance threshold, thereby causing the light-emitting unit to burn out. This burnout not only causes a single light-emitting unit to fail, affecting the overall light-emitting uniformity and lighting intensity of the lamp, but in severe cases, the damage to multiple light-emitting units can make the lamp completely lose its lighting function, significantly shorten the service life of the lamp, and cause economic losses to the user. Whether it is a searchlight for outdoor security lighting or a stage light frequently used for various performances, it is deeply affected and has become a technical problem that urgently needs to be overcome in the field.

[0004] Some lamp manufacturers add a light shield in front of the lens. The light shield is usually made of opaque materials such as black plastic, metal sheet, etc., and its shape is designed to fit the profile of the lamp head. It is installed outside the lens and can block direct sunlight from shining on the lens. When the lamp is not in use, the light shield keeps the outside sunlight out, preventing light from focusing on the light-emitting unit through the lens. The light shield of some large searchlights is designed to be foldable or detachable, which is convenient for storage and saves space when the lamp needs to be transported or stored for a long time. The light shield of a stage lamp may be combined with artistic design, which meets the protection requirements and does not affect the overall appearance of the lamp. Although the light shield can effectively block sunlight, it also has some drawbacks. On the one hand, the added light shield changes the original appearance size of the lamp, which may cause installation inconvenience due to the light shield in some application scenarios with strict installation space limitations, such as space-constrained stage lamp racks and small outdoor monitoring tower-mounted searchlights. On the other hand, the light shield is exposed to the outside for a long time and is easily eroded by wind, sun, rain and other natural environments. The material may age and deform, affecting the light-shielding effect and requiring regular maintenance and replacement, increasing the use cost. Practical new type content

[0005] In order to solve the above problems of the prior art, the utility model provides a lamp head light shielding structure.

[0006] In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises:

[0007] A lamp head light shielding structure comprises a light shielding plate arranged between a light-emitting unit and a light-emitting assembly; the light shielding plate is provided with a light transmission hole allowing the emitted light of the light-emitting unit to pass through; the light shielding plate is connected with a driving assembly controlling the movement of the light shielding plate to block the light; and the driving assembly is controlled by an energy storage module.

[0008] Further, the light-emitting unit is arranged on a base.

[0009] Further, the light shielding plate is connected with the base through a support column; the support column is movably connected with the light shielding plate through a guide support; and the support column is provided with a plurality of support columns.

[0010] Further, the guide support comprises a support portion for supporting the light shielding plate; and the support portion is provided with a guide portion matched with a guide groove on the light shielding plate.

[0011] Further, a limiting portion located at the top of the light shielding plate is arranged above the guide portion.

[0012] Further, the light shielding plate is circular; and three support columns are evenly arranged along the circumference of the light shielding plate.

[0013] Further, the base is provided with a limiting column; the limiting column penetrates the light blocking plate and cooperates with the limiting slot on the light blocking plate to limit the rotating angle of the light blocking plate.

[0014] Further, the driving assembly comprises a motor mounting seat mounted on the base; the motor mounting seat is provided with a screw rod motor; the screw rod of the screw rod motor is provided with a screw rod sleeve; the screw rod sleeve is connected with the guide column; the guide column cooperates with the matching hole on the light blocking plate to drive the rotation of the light blocking plate.

[0015] Further, the screw rod sleeve is externally provided with a connecting seat; the connecting seat is fixedly connected with the guide column; the screw rod is provided with a guide shaft parallel to the screw rod on the side; the guide shaft is slidingly connected with the connecting seat; one side of the screw rod motor is fixedly connected with a magnetic induction PCB; the connecting seat is fixedly provided with a magnet matched with the magnetic induction PCB.

[0016] Further, the energy storage module is a capacitor.

[0017] Further, the second supporting column is connected with a bearing at the top; the inner ring of the bearing is fixedly connected with the second supporting column; the outer ring of the bearing is fixedly connected with the light blocking plate.

[0018] Further, the light blocking plate is provided with a first through hole arranged opposite to the second supporting column; the outer ring of the bearing is fixedly connected with the light blocking plate through a screw; the top of the second supporting column is provided with a limiting plate; the limiting plate is connected with the second supporting column through a screw to press the inner ring of the bearing.

[0019] The beneficial effects of the utility model are that: the setting structure of the light blocking plate fully considers the internal space layout of the lamp. The space between the light emitting unit and the light emitting assembly is reasonably utilized, which does not affect the normal light emission of the lamp, and also leaves enough space for the installation and action of the light blocking plate. The setting of the energy storage module can realize the automatic control of the driving assembly working after power failure. Whether it is daily power failure, sudden power failure or manual power-off, once the equipment is powered off, the energy storage module can control the driving assembly to accurately control the movement of the light blocking plate. The whole process does not need manual intervention, is efficient and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0021] Figure 1 It is the structure explosion schematic diagram of the utility model.

[0022] Figure 2 is a perspective view of the driving assembly of the utility model;

[0023] Figure 3 is a perspective view of the supporting column of the utility model;

[0024] Figure 4 is a front view of the utility model;

[0025] Figure 5 is an A-A sectional view of the utility model;

[0026] Figure 6 is a B part enlarged view of the utility model; Figure 1

[0027] Mark explanation:

[0028] 100, base; 110, light emitting unit; 120, light blocking plate; 121, light passing hole; 122, guide groove; 123, limiting groove; 124, matching hole; 125, first through hole; 130, supporting column; 131, guide support; 132, supporting part; 133, guide part; 134, limiting part; 140, driving assembly; 141, motor mounting seat; 142, screw motor; 143, screw rod; 144, screw rod sleeve; 145, guide column; 146, connecting seat; 147, guide shaft; 148, magnetic induction PCB; 149, magnet; 150, energy storage module; 160, limiting column; 170, second supporting column; 171, bearing; 172, limiting plate; 173, screw; 200, light emitting assembly; 300, lamp shell. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] ​In the description of the utility model, it is necessary to explain, the term "upper", "lower", "internal", "external" "front end", "rear end", "both ends", "one end", "the other end" and so on indicate the position relation or location relation is based on the position relation or location relation shown in the drawing, only is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the utility model, it is necessary to explain, unless otherwise expressly provided and limited, the term "installation", "provided with", "connection" and so on, should be broadly understood, for example "connection", can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] Embodiment, please refer to Figure 1 As shown in the figure:

[0033] A lamp holder light blocking structure, comprising a base 100; a lamp shell 300 is fixedly connected on the base 100; a containing space is formed in the lamp shell 300; a light emitting unit 110 and a light emitting assembly 200 are arranged in the containing space; the light emitting unit 110 is fixedly arranged on the base 100; the light emitting unit 110 comprises a plurality of light emitting units; the light emitting assembly 200 is arranged on the light emitting unit 110 in a spaced manner; the light emitting assembly 200 is generally a lens assembly; a light blocking plate 120 is arranged between the light emitting unit 110 and the light emitting assembly 200; the light blocking plate 120 is provided with a light passing hole 121 allowing the emitted light of the light emitting unit 110 to pass through; the light blocking plate 120 is connected with a driving assembly 140 controlling the movement of the light blocking plate 120 to block the light; the driving assembly 140 controls the driving through an energy storage module 150; the arrangement structure of the light blocking plate 120 fully considers the internal space layout of the lamp, reasonably utilizes the space between the light emitting unit 110 and the light emitting assembly 200, does not affect the normal light emission of the lamp, and leaves enough space for the installation and movement of the light blocking plate 120; whether it is a small portable stage lamp or a large outdoor searchlight, the size and position can be flexibly adjusted according to the internal structure characteristics of itself to realize the best adaptation and improve the overall space utilization rate of the lamp; compared with the traditional light shield, it will not cause additional interference to the normal light emission of the lamp, only starts the protection mechanism when power failure, ensures that the lamp can play the lighting function without any obstruction during the normal use period, maintains the light output quality, and ensures that the lighting effect meets the scene requirements, such as precise projection of colorful light in stage performance, precise illumination of target area in long-distance search, etc.

[0034] The arrangement of the energy storage module 150 can realize automatic control of the driving assembly 140 to work in power failure, whether it is daily power failure, sudden power failure or manual power-off, once the equipment is powered off, the energy storage module 150 can control the driving assembly 140 to precisely control the movement of the light blocking plate 120. The whole process does not need manual intervention, is efficient and reliable. For example, in the application scene of outdoor security searchlight, the power supply line may fail due to bad weather, at this time the light blocking plate 120 will automatically adjust the position at the moment of power failure, deviate the light passing hole 121 from the light emitting unit 110, and timely block the sunlight focusing light to avoid damage to the light emitting unit 110, greatly prolong the service life of the lamp, and reduce the high cost and maintenance energy consumption caused by frequent replacement of parts. The energy storage module 150 is designed flexibly, which can select general energy storage elements to meet the demand of general power supply stability, and can be optimized according to special application scenes. For example, the stage lamp used in the area with unstable power supply can be equipped with a large-capacity energy storage battery as the energy storage module 150, to ensure that even if the power is off for a long time, the light blocking plate 120 can operate multiple times to provide long-term protection for the lamp; in another embodiment, a capacitor is used as the energy storage module 150, which takes advantage of the rapid charging and discharging, small size of the capacitor, realizes instant protection after power failure without increasing too much weight and space occupation, effectively reduces the cost and reduces the occupation of the internal space of the lamp.

[0035] like Figure 2 As shown, in one embodiment, the drive assembly 140 includes a motor mounting base 141 mounted on a base 100; a lead screw motor 142 is mounted on the motor mounting base 141; a lead screw sleeve 144 is mounted on the lead screw 143 of the lead screw motor 142; the lead screw sleeve 144 is connected to a guide post 145; the guide post 145 engages with a mating hole 124 on a light-blocking plate 120 to drive the rotation of the light-blocking plate 120. The lead screw motor 142 serves as the drive core. When the lead screw motor 142 operates, the lead screw sleeve 144 moves linearly along the thread of the lead screw 143. This transmission method precisely converts the rotational motion of the motor into linear displacement. Compared to some traditional linkage or gear transmissions, the lead screw 143 transmission has higher precision, almost no backlash, and can accurately transmit the minute motor rotation. When controlling the rotation of the light-blocking plate 120, it is precisely positioned to ensure accurate relative positioning between the light-transmitting hole 121 and the light-emitting unit 110, effectively blocking focused sunlight and greatly improving the accuracy of protection. The lead screw motor 142 operates smoothly, providing uniform and continuous power output. Throughout the entire service life of the lamp, whether frequently switching between light-blocking states due to power outages and restorations, or activating the protection action for the first time after a long period of inactivity, the lead screw motor 142 can stably drive the light-blocking plate 120.

[0036] In one embodiment, the lead screw sleeve 144 is provided with a connecting seat 146; a guide post 145 is fixedly connected to the connecting seat 146; a guide shaft 147 parallel to the lead screw 143 is provided on the side of the lead screw 143; the guide shaft 147 is slidably connected to the connecting seat 146. The guide shaft 147, which is parallel to the lead screw 143, provides a reliable linear motion reference for the connecting seat 146 and the components connected thereto. When the lead screw motor 142 operates and drives the lead screw sleeve 144 to move, the connecting seat 146, due to its slidable connection with the guide shaft 147, can only slide smoothly along the direction defined by the guide shaft 147, avoiding possible lateral displacement or torsion of the lead screw sleeve 144 under force. The guide shaft 147 and the lead screw 143 cooperate to form a cooperative stabilization mechanism. The lead screw 143 is responsible for providing precise axial driving force, while the guide shaft 147 is responsible for constraining lateral displacement. The two work together to ensure that the connecting seat 146 and the guide post 145 it carries have almost no wobbling during movement. When the lighting fixtures frequently activate protective actions, such as when power outages and switching between light-shielding states are caused by unstable power supply, this stable structure ensures that the light-blocking plate 120 can quickly and smoothly reach the accurate position each time.

[0037] In an embodiment, one side of the lead screw motor 142 is fixedly connected with a magnetic induction PCB 148; a magnet 149 that cooperates with the magnetic induction PCB 148 is fixedly arranged on the connecting seat 146; when the lead screw motor 142 drives the lead screw sleeve 144 and the connecting seat 146 to move, the relative position of the magnet 149 and the magnetic induction PCB 148 changes. Due to the change of the magnetic field, the magnetic induction PCB 148 can accurately perceive the position information of the connecting seat 146. This non-contact position detection method has high precision and high reliability, and can feedback the position state of the light barrier 120 in real time. Based on the position information fed back by the magnetic induction PCB 148, the control system of the lamp can control the lead screw motor 142 more finely. By accurately adjusting the rotation speed, rotation direction and start-stop time of the motor, accurate speed regulation and positioning of the movement of the light barrier 120 can be realized. Compared with the traditional mechanical limiting device, this magnetic induction position detection method avoids direct contact and collision between mechanical parts. In the process of frequent light shielding operation, wear and damage caused by mechanical friction and collision are reduced. The magnetic induction signal is relatively stable and is not easily disturbed by external environmental factors such as dust, oil stains, humidity, etc. In the outdoor complex environment, the lamp may be eroded by sand, rain, etc., but the cooperation between the magnetic induction PCB 148 and the magnet 149 can still work accurately. This anti-interference ability ensures the accuracy of the position feedback information, so that the lamp protection system can also normally operate in harsh environments, and the continuous and stable protection of the light emitting unit is ensured.

[0038] In an embodiment, the light emitting unit 110 is arranged on the base 100; the light barrier 120 is connected with the base 100 through the support column 130; the support column 130 is movably connected with the light barrier 120 through the guide support 131; the support column 130 is provided in plurality; the light barrier 120 is connected with the base 100 through the plurality of support columns 130, and a stable mechanical support structure is constructed. The plurality of support points are uniformly distributed at the bottom of the light barrier 120, and effectively share the weight of the light barrier 120 itself and the stress generated in the moving process. This makes the light barrier 120 always keep stable in the frequent light shielding action, and will not shake or deviate due to uneven stress.

[0039] As Figure 3As shown, in an embodiment, the guide support 131 comprises a support portion 132 for supporting the light barrier 120; the support portion 132 is provided with a guide portion 133 matched with the guide groove 122 on the light barrier 120. The support portion 132 provides vertical support force for the light barrier 120, ensuring that the light barrier 120 is stably suspended in the vertical direction, avoiding the influence of the gravity on the shading effect. The guide portion 133 on the support portion 132 is tightly matched with the guide groove 122 of the light barrier 120, strictly restricting the rotation path of the light barrier 120. When the driving assembly 140 drives the light barrier 120 to rotate, the guide portion 133 guides the light barrier 120 to move along the predetermined trajectory accurately, ensuring that the light transmission hole 121 can accurately deviate from or align with the light emitting unit 110, realizing efficient and reliable light shielding and light transmission switching, and greatly improving the accuracy of protection.

[0040] In an embodiment, the guide portion 133 is provided with a limiting portion 134 located at the top of the light barrier 120, limiting the top of the light barrier 120. During the operation of the lamp, whether it is daily vibration, jolt during transportation, or external force impact in extreme environment, the limiting portion 134 can effectively prevent the light barrier 120 from being separated from its normal working position upward due to accidental force.

[0041] In an embodiment, the light barrier 120 is circular; and the support column 130 is uniformly provided with three along the circumference of the light barrier 120.

[0042] As shown, Figures 4-5 In an embodiment, the base 100 is provided with a limiting column 160; the limiting column 160 penetrates through the light barrier 120 and is matched with the limiting groove 123 on the light barrier 120 to limit the rotation angle of the light barrier 120. The limiting column 160 is used to further limit the rotation angle of the light barrier 120.

[0043] As shown, Figure 5 As shown, the plurality of inverted conical structures on the light barrier 120 in the figure are schematic representations of the light beams after the emitted light of the light emitting unit 110 passes through the light transmission hole 121.

[0044] As shown, Figure 6 In an embodiment, the light barrier 120 is provided with a second support column 170 between the middle portion and the base 100; the top of the second support column 170 is connected with a bearing 171; the inner ring of the bearing 171 is fixedly connected with the second support column 170; the outer ring of the bearing 171 is fixedly connected with the light barrier 120; so that the light barrier 120 can rotate around the second support column 170; the second support column 170 can also provide support for the light barrier 120;

[0045] In an embodiment, the light blocking plate 120 is provided with a first through hole 125 opposite to the second support column 170; the position of the second support column 170 can be quickly positioned through the first through hole 125, facilitating the connection of the light blocking plate 120 and the outer ring of the bearing 171; the outer ring of the bearing 171 is fixedly connected with the light blocking plate 120 through a screw 173; the top of the second support column 170 is provided with a limiting plate 172; the limiting plate 172 is connected with the second support column 170 through the screw 173 to press the inner ring of the bearing 171.

[0046] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent transformation, direct or indirect application in the related technical field by using the content of the present application specification and drawings is also included in the patent protection range of the present application.

Claims

1. A light-blocking structure for a lamp holder, characterized in that: It includes a light-blocking plate (120) disposed between the light-emitting unit (110) and the light-emitting component (200); the light-blocking plate (120) is provided with a light-transmitting hole (121) that allows the emitted light from the light-emitting unit (110) to pass through; a driving component (140) for controlling its movement to block light is connected to the light-blocking plate (120); the driving component (140) is controlled and driven by an energy storage module (150).

2. The light-blocking structure for a lamp holder according to claim 1, characterized in that: The light-emitting unit (110) is mounted on the base (100); the energy storage module (150) is a capacitor.

3. The light-blocking structure for a lamp head according to claim 2, characterized in that: The light-blocking plate (120) is connected to the base (100) via a support column (130); the support column (130) is movably connected to the light-blocking plate (120) via a guide support member (131); multiple support columns (130) are provided.

4. The light-blocking structure for a lamp holder according to claim 3, characterized in that: The guide support (131) includes a support portion (132) for supporting the light-blocking plate (120); the support portion (132) is provided with a guide portion (133) that cooperates with the guide groove (122) on the light-blocking plate (120); a limiting portion (134) located at the top of the light-blocking plate (120) is provided above the guide portion (133).

5. A light-blocking structure for a lamp head according to claim 3, characterized in that: The light-blocking plate (120) is circular; three support columns (130) are evenly arranged along the circumference of the light-blocking plate (120).

6. The light-blocking structure for a lamp head according to claim 2, characterized in that: The base (100) is provided with a limiting post (160); the limiting post (160) passes through the light-blocking plate (120) and cooperates with the limiting groove (123) on the light-blocking plate (120) to limit the rotation angle of the light-blocking plate (120).

7. The light-blocking structure for a lamp holder according to claim 1, characterized in that: The drive assembly (140) includes a motor mounting base (141) mounted on a base (100); a lead screw motor (142) is provided on the motor mounting base (141); a lead screw sleeve (144) is provided on the lead screw (143) of the lead screw motor (142); the lead screw sleeve (144) is connected to a guide post (145); the guide post (145) engages with a mating hole (124) on a light-blocking plate (120) to drive the rotation of the light-blocking plate (120).

8. A light-blocking structure for a lamp holder according to claim 7, characterized in that: The lead screw sleeve (144) is provided with a connecting seat (146); a guide post (145) is fixedly connected to the connecting seat (146); a guide shaft (147) parallel to the lead screw (143) is provided on the side of the lead screw (143); the guide shaft (147) is slidably connected to the connecting seat (146); a magnetic induction PCB (148) is fixedly connected to one side of the lead screw motor (142); a magnet (149) that cooperates with the magnetic induction PCB (148) is fixedly provided on the connecting seat (146).

9. A light-blocking structure for a lamp holder according to claim 1, characterized in that: A second support column (170) is provided between the middle of the light-blocking plate (120) and the base (100); a bearing (171) is connected to the top of the second support column (170); the inner ring of the bearing (171) is fixedly connected to the second support column (170); and the outer ring of the bearing (171) is fixedly connected to the light-blocking plate (120).

10. A light-blocking structure for a lamp holder according to claim 9, characterized in that: The light-blocking plate (120) is provided with a first through hole (125) opposite to the second support column (170); the outer ring of the bearing (171) is fixedly connected to the light-blocking plate (120) by screws (173); the top of the second support column (170) is provided with a limiting plate (172); the limiting plate (172) is connected to the second support column (170) by screws (173) to press the inner ring of the bearing (171).

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