Energy saving device

Abstract

Disclosed is a non-powered energy saving device which can be operated without supplying of external power by using reversible shape deformation of a shape memory material in order to fundamentally solve an energy consumption problem of an existing system. The energy saving device comprises: a base frame; a light shielding wing connected to the base frame to be tiltable; a shape memory member disposed on the base frame and having a shape reversibly changed in accordance with a temperature change; a moving member connected to the shape memory member to move in accordance with the shape change of the shape memory member; and a connection member for connecting the moving member and the light shielding wing to enable the light shielding wing to be tilted in accordance with the movement of the moving member.

Description

Energy saving device

[0001] The present invention relates to an energy saving device, and more specifically, to an energy saving device capable of operating without power by utilizing the characteristics of a shape-deforming material whose shape changes reversibly in response to a change in temperature.

[0002] Recently, as energy-saving technologies for sustainable architecture have become increasingly important, responsive building envelope systems capable of actively responding to climate change are garnering attention. These systems are technologies that optimize the indoor environment by automatically changing the shape or structure of the building envelope in response to changes in the external environment.

[0003] Responsive building envelope systems primarily control the indoor environment by detecting environmental factors such as solar radiation, external temperature, and indoor illuminance, and adjusting the angle or position of shading devices. This enables a reduction in the building's energy consumption for heating and cooling.

[0004] Currently, most responsive building envelope systems use mechanical actuation methods based on electronic sensors and motors. While this method offers the advantage of precise control, it has several drawbacks.

[0005] For example, conventional responsive building envelope systems have the problem that the mechanisms and components for constructing moving parts and connection systems are very complex and costly to manufacture. In addition, motor-based motion systems transmit noise and vibration indoors and have the disadvantage of requiring frequent inspections for stable operation.

[0006] Furthermore, existing systems face difficulties in miniaturization due to the need for various components such as motors and batteries. These size constraints limit design freedom when applied to actual buildings and increase the complexity of installation and maintenance.

[0007] The problem that the present invention aims to solve is to provide a power-free energy-saving device capable of operating without an external power supply by utilizing the reversible shape deformation of a shape memory material to fundamentally solve the energy consumption problem of existing systems.

[0008] In addition, the problem that the present invention aims to solve is to provide a more flexible, lightweight, and compact energy-saving device by utilizing a shape memory member as a single driving source to minimize the number of parts and simplify the structure.

[0009] In addition, the problem that the present invention aims to solve is to provide an energy-saving device that reduces manufacturing costs through a simplified structure and minimized component configuration, and can be easily applied to various objects.

[0010] The problems of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below.

[0011] In order to solve the problem described above, an energy saving device according to one embodiment of the present invention comprises: a base frame; a light-blocking wing tiltably connected to the base frame; a shape memory member disposed on the base frame and having a shape that changes reversibly according to a temperature change; a moving member connected to the shape memory member to move according to the shape change of the shape memory member; and a connecting member connecting the moving member and the light-blocking wing so that the light-blocking wing tilts according to the movement of the moving member.

[0012] The shape memory member may be shaped such that, under conditions of rising temperature, the light-blocking wing is converted to a closed state that performs a light-blocking function for an object, and under conditions of falling temperature, the light-blocking wing is converted to an open state that releases the light-blocking function for the object.

[0013] The above shape memory member can be formed in the shape of a coil.

[0014] The base frame includes a connecting frame positioned over the surface of the object, and the shading wing may include a tilting frame tiltably connected to the connecting frame; and a wing body connected to the tilting frame so as to cover the surface of the object.

[0015] An energy saving device according to one embodiment of the present invention may include a guide disposed on the connecting frame to guide the moving member to move linearly.

[0016] The shape memory member may be formed in the shape of a coil, with one end connected to the connecting frame and the other end connected to the moving member.

[0017] The shape memory members can be arranged in multiple numbers around the guide.

[0018] The above-mentioned shading wings can be arranged in multiple numbers along the circumference of the guide.

[0019] An energy saving device according to one embodiment of the present invention may include a center cover disposed at the end of the guide so as to cover the space between the plurality of light-shielding wings when the plurality of light-shielding wings are switched to the closed state.

[0020] The wing body may include a body frame connected to the tilting frame; and a light-blocking film coupled to the body frame.

[0021] The body frame may include: a top edge positioned to face the edge of the center cover when the shading wing is switched to the closed state; a bottom edge positioned longer than the top edge and closer to the surface of the object than the top edge; and a pair of side edges connecting both sides of the top edge and both sides of the bottom edge.

[0022] The tilting frame can be connected to the body frame at an acute angle.

[0023] The tilting frame has an end connected to the body frame positioned closer to the bottom edge than to the top edge, and a weight may be positioned in the middle part of the bottom edge.

[0024] One end of the above connecting member may be pivotally connected to the above moving member, and the other end may be pivotally connected to the above tilting frame.

[0025] The above-mentioned light-blocking wing may include a cooling functional film disposed on the outer surface to perform a radiative cooling function.

[0026] The above-mentioned shading wing may include a heating functional film disposed on the inner surface to perform a solar heat absorption function.

[0027] An energy saving device according to one embodiment of the present invention may include a base functional membrane disposed on the base frame and performing a solar heat absorption function.

[0028] To solve the problem described above, an energy saving device according to another embodiment of the present invention comprises: a base frame; a shape memory member disposed on the base frame and having a shape that changes reversibly according to a temperature change; and a light-blocking wing connected to the shape memory member so as to switch to a closed state or an open state according to the shape change of the shape memory member.

[0029] The above-mentioned light-blocking wing can be switched to a closed state by increasing the length of the shape memory member under temperature rise conditions, and switched to an open state by decreasing the length of the shape memory member under temperature fall conditions.

[0030] The energy saving device according to the present invention uses a shape memory member, whose shape changes according to temperature changes, as a driving source, thereby enabling operation without additional power devices such as motors or batteries, and autonomous light-blocking control without a separate control device.

[0031] In addition, the energy saving device according to the present invention can significantly reduce energy consumption compared to conventional power-driven shading devices due to its characteristic of operating without power, and is environmentally friendly.

[0032] In addition, the energy saving device according to the present invention has a simple connection structure between the light-shielding wing and the shape memory member and a small number of parts. As a result, the reliability and durability of the product are excellent, and the likelihood of failure is low, thereby minimizing the cost and effort required for maintenance.

[0033] In addition, the energy saving device according to the present invention allows for stepwise shading control according to changes in the external environment, as the tilting angle of the shading wing is naturally adjusted according to the amount of change of the shape memory member.

[0034] In addition, the energy saving device according to the present invention can actively lower the temperature of an object beyond a simple light-blocking function by providing a radiant cooling effect in a light-blocking mode through a functional film having mid-infrared radiation characteristics, such as a radiant cooling film.

[0035] In addition, the energy saving device according to the present invention can enhance the heating effect of an object by providing a solar heat absorption function in a light-release mode through a functional film with excellent solar heat absorption function.

[0036] In addition, the energy saving device according to the present invention can achieve optimal energy efficiency in response to changes in the external environment through a combination of functional membranes having a radiative cooling function and functional membranes having a solar heat absorption function, and can simultaneously achieve energy saving effects for cooling and heating with a single device.

[0037] The various and beneficial advantages and effects of the present invention are not limited to those described above, and even more diverse effects are included in this specification.

[0038] FIG. 1 is a perspective view showing an energy saving device according to one embodiment of the present invention.

[0039] FIG. 2 is a perspective view showing an energy saving device according to one embodiment of the present invention operating in a light-blocking mode.

[0040] FIG. 3 is a plan view showing an energy saving device according to one embodiment of the present invention operating in a light-blocking mode.

[0041] FIG. 4 is a cross-sectional view showing an energy saving device according to one embodiment of the present invention installed on an object.

[0042] FIG. 5 is a cross-sectional view showing an energy saving device according to one embodiment of the present invention installed on an object and operating in a light-blocking mode.

[0043] FIG. 6 is a perspective view showing the sunshade wing of an energy saving device according to one embodiment of the present invention in an open state.

[0044] FIG. 7 is a perspective view showing the sunshade wing of an energy saving device according to one embodiment of the present invention in a closed state.

[0045] FIG. 8 is a perspective view showing a part of the configuration of a light-shielding wing of an energy-saving device according to one embodiment of the present invention.

[0046] FIG. 9 is a cross-sectional view showing an energy saving device according to another embodiment of the present invention installed on an object.

[0047] The advantages and features of this specification and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, this specification is not limited to the embodiments disclosed below but may be implemented in various different forms, and these embodiments are provided merely to ensure that the disclosure of this specification is complete and to fully inform those skilled in the art of the scope of this specification.

[0048] Shapes, areas, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of this specification are exemplary, and this specification is not limited to the depicted details. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing this specification, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of this specification, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it is included in the plural unless specifically stated otherwise.

[0049] In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement.

[0050] In the case of describing a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless 'immediately' or 'directly' is used.

[0051] Additionally, terms such as "first," "second," etc. are used to describe various components, but these components are not limited by these terms. These terms are used merely to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the technical scope of this specification.

[0052] Throughout the specification, the same reference numerals refer to the same components.

[0053] The area and thickness of each component shown in the drawings are illustrated for convenience of explanation and are not necessarily limited to the area and thickness of the components illustrated in this specification.

[0054] In the embodiments, a 'module' or 'part' performs at least one function or operation and may be implemented in hardware or software, or a combination of hardware and software. Additionally, a plurality of 'modules' or a plurality of 'parts' may be integrated into at least one module, except for the 'module' or 'part' that needs to be implemented in specific hardware.

[0055] The features of each of the various embodiments of this specification may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an associated relationship.

[0056] The present invention will be described below with reference to the drawings.

[0057] FIG. 1 is a perspective view showing an energy saving device according to one embodiment of the present invention, FIG. 2 is a perspective view showing an energy saving device according to one embodiment of the present invention operating in a light-blocking mode, FIG. 3 is a plan view showing an energy saving device according to one embodiment of the present invention operating in a light-blocking mode, and FIG. 4 is a cross-sectional view showing an energy saving device according to one embodiment of the present invention installed on an object.

[0058] As shown in the drawing, an energy saving device (100) according to one embodiment of the present invention comprises a base frame (110) coupled to an object (10), a moving member (130) movably supported on the base frame (110), a light-blocking wing (140) tiltably connected to the base frame (110), a connecting member (160) connecting the moving member (130) and the light-blocking wing (140), a shape memory member (170) providing a driving force to move the moving member (130), and a center cover (180) disposed at the end of the base frame (110). The light-blocking wing (140) and the connecting member (160) are provided in a plurality.

[0059] An energy saving device (100) according to one embodiment of the present invention is a non-powered energy saving device that automatically switches between a light-blocking mode and a light-blocking release mode depending on external temperature changes. Specifically, when the temperature rises, the shape memory member (170) extends so that the moving member (130) moves away from the object (10), and the connecting member (160) connected to the moving member (130) tilts the light-blocking wing (140) to switch to the light-blocking mode. Conversely, when the temperature falls, the shape memory member (170) contracts so that the moving member (130) moves toward the object (10), and the light-blocking wing (140) tilts to switch to the light-blocking release mode.

[0060] In an energy saving device (100) according to one embodiment of the present invention, since a shape memory member (170) whose shape changes according to temperature change acts as a driving source, additional driving devices such as a motor or battery are not required.

[0061] The energy saving device (100) of this configuration can be installed in various places or objects such as buildings or greenhouses, and can provide an effective shading function while minimizing energy consumption.

[0062] Referring to FIGS. 4 through 7, the base frame (110) is a foundation structure installed on the surface of an object (10) and includes a base (111), a support (112), and a connecting frame (113). The object (10) may be various structures requiring shading, such as the roof or exterior wall of a building or greenhouse.

[0063] The base (111) is a part installed in direct contact with the surface of the object (10). The base (111) may be formed as a plate-like structure having a sufficient surface area so that the entire energy saving device (100) can be stably supported on the object (10), but is not limited to such a configuration.

[0064] The base (111) may include a functional film with excellent solar heat absorption capabilities. The functional film may include various materials having solar heat absorption properties, such as a solar heat absorption film or colored paint such as carbon black paint. When the shading wing (140) is switched to an open state, the base (111) is exposed to the outside to effectively absorb solar heat and enhance the heating effect of the object (10).

[0065] The support (112) extends vertically from the base (111) to support the connecting frame (113). The support (112) is configured to space the connecting frame (113) at an appropriate distance from the surface of the object (10).

[0066] A connecting frame (113) is positioned on the top of a support (112) to support a plurality of light-blocking wings (140) in a tiltable manner. The connecting frame (113) includes a connecting frame groove (114). A portion of the light-blocking wing (140) is inserted into the connecting frame groove (114) so ​​that the light-blocking wing (140) can be pivotally connected to the connecting frame (113). The connecting frame groove (114) is provided in a number corresponding to the plurality of light-blocking wings (140). The plurality of connecting frame grooves (114) may be arranged in the front-back-left-right directions, such as the direction in which the plurality of light-blocking wings (140) are arranged, but the number or arrangement of the connecting frame grooves (114) may vary depending on the number or arrangement of the light-blocking wings (140).

[0067] The specific configuration of the base frame (110) is not limited to that illustrated and can be changed to other configurations that are placed on the surface of the object (10) to support a plurality of light-blocking wings (140) and shape memory members (170). For example, a configuration in which the base (111) is omitted and the support (112) is directly coupled to the object (10) is also possible. Additionally, the base frame (110) can be configured so that the connecting frame (113) is directly coupled to the object (10) without the base (111) and the support (112).

[0068] A guide (120) is disposed on the base frame (110). The guide (120) protrudes from the end of the connecting frame (113) so as to be erected against the surface of the object (10). That is, the guide (120) is formed in the shape of a column or rod extending parallel to the direction of movement of the moving member (130). The guide (120) can guide the moving member (130) to move linearly in a stable manner.

[0069] The guide (120) can be changed to another shape that can guide the moving member (130) to move linearly, in addition to the cylindrical shape shown in the drawing.

[0070] The moving member (130) is movably coupled to the guide (120) so as to move by the shape change of the shape memory member (170). The moving member (130) includes a moving member hole (131) and a moving member groove (132).

[0071] The movable member hole (131) is provided to penetrate the center of the movable member (130). The movable member (130) is coupled to the guide (120) in such a way that the guide (120) is inserted into the movable member hole (131). Thus, the movable member (130) can move stably linearly along the longitudinal direction of the guide (120).

[0072] The movable member groove (132) is configured to allow a portion of the connecting member (160) to be inserted. One end of the connecting member (160) is inserted into the movable member groove (132) so that the connecting member (160) can be pivotally connected to the movable member (130). The movable member groove (132) is provided in a number corresponding to the number of connecting members (160). The number of movable member grooves (132) may be arranged in the front-back-left-right directions, such as the direction in which the number of light-blocking wings (140) are arranged, but the number or arrangement of the movable member grooves (132) may be varied.

[0073] One side of the movable member (130) (the lower surface of the movable member (130) based on the drawing) is connected to the end of the shape memory member (170). Accordingly, when the shape memory member (170) is extended, the movable member (130) moves away from the base (111), and when the shape memory member (170) is contracted, the movable member (130) moves toward the base (111). When the movable member (130) moves away from the base (111), the light-blocking wing (140) is switched to a closed state, and when it moves toward the base (111), the light-blocking wing (140) is switched to an open state.

[0074] The specific configuration of the moving member (130) is not limited to that depicted and can be varied. That is, the moving member (130) can be changed to a different configuration connected to the shape memory member (170) so as to move according to the shape deformation of the shape memory member (170).

[0075] Referring to FIGS. 1 to 4, a light-blocking wing (140) is tiltably connected to a base frame (110) to perform a light-blocking function for an object (10). The light-blocking wing (140) is arranged in multiple numbers along the circumference of a guide (120). The multiple light-blocking wings (140) are arranged radially around the circumference of the guide (120) to selectively cover the surface of the object (10) to which the base frame (110) is attached. This radial arrangement of the light-blocking wing (140) is advantageous for increasing the light-blocking effect by causing the multiple light-blocking wings (140) to move simultaneously according to the shape change of the shape memory member (170) placed on the base frame (110). That is, in the light-blocking mode, the edges of each of the multiple light-blocking wings (140) become closer to each other, thereby further enhancing the light-blocking effect for the object (10).

[0076] The size of the area shielded by the plurality of shielding wings (140) can vary depending on the size of the shielding wings (140), etc. Accordingly, the size, number, and arrangement of the shielding wings (140) can be varied depending on the size of the area requiring shielding.

[0077] The light-blocking wing (140) is optimized to enable automatic opening and closing according to the shape change of the shape memory member (170), while also performing efficient light-blocking and energy-saving functions. That is, the light-blocking wing (140) includes a tilting frame (141) connected to the base frame (110) and a wing body (148) connected to the tilting frame (141) to block light.

[0078] As shown in FIGS. 4 to 8, the tilting frame (141) is tiltably connected to the connecting frame (113). One end of the tilting frame (141) is connected to the wing body (148), and the other end of the tilting frame (141) is connected to the connecting frame (113) via a pivot joint connection. One end of the tilting frame (141) is connected to the lower central part of the wing body (148), and the other end of the tilting frame (141) is inserted into the connecting frame groove (114) of the connecting frame (113). The tilting frame (141) is connected to the wing body (148) at an acute angle. The tilting frame (141) includes a first joint member (142) and a second joint member (144).

[0079] The first joint member (142) is positioned at the other end of the tilting frame (141). The first joint member (142) is rotatably connected to the connecting frame (113) to form a pivot joint. The first joint member (142) includes a pivot pin (143) that is inserted into the connecting frame groove (114). The pivot pin (143) is inserted into the connecting frame groove (114) to form the axis of rotation of the tilting frame (141).

[0080] The connection structure between the tilting frame (141) and the connecting frame (113) can be changed in various ways. That is, the tilting frame (141) and the connecting frame (113) can be pivot joint connected in different ways.

[0081] For example, the first joint member (142) of the tilting frame (141) may include a groove, and the connecting frame (113) may include a pivot pin inserted into the groove.

[0082] The second joint member (144) is positioned in the middle portion of the tilting frame (141). The second joint member (144) is rotatably connected to the connecting member (160) to form a pivot joint. The second joint member (144) includes a bracket (145). The bracket (145) is provided with a bracket groove (146) into which the end of the connecting member (160) is inserted. The end of the connecting member (160) is rotatably coupled to the bracket (145).

[0083] The wing body (148) is a part connected to the tilting frame (141) that performs a substantial light-blocking function and radiative cooling. The wing body (148) has a shape designed to effectively cover the surface of the object (10). The wing body (148) can move between an open position and a closed position depending on the tilting operation of the tilting frame (141). The open position represents the position where the wing body (148) is closest to the surface of the object (10), and the closed position represents the position where the wing body (148) is farthest from the surface of the object (10).

[0084] As shown in FIGS. 4 to 8, the wing body (148) includes a body frame (150) connected to a tilting frame (141) and a light-blocking film (153) covering the body frame (150).

[0085] The body frame (150) forms the basic framework of the wing body (148). The body frame (150) is formed in a roughly trapezoidal shape. That is, the width of the body frame (150) at the end closer to the base (111) (lower end in the drawing) is greater than the width of the opposite end (upper end in the drawing). The body frame (150) includes a bottom edge (150a), a top edge (150b), a pair of side edges (150c), and an opening (151).

[0086] The bottom edge (150a) is the edge portion of the body frame (150) that is closer to the base (111). The bottom edge (150a) has a curved shape that wraps around the connecting frame (113).

[0087] The top edge (150b) is the edge portion of the body frame (150) opposite the bottom edge (150a). The length of the top edge (150b) is shorter than the length of the bottom edge (150a). When the shading wing (140) is switched to a closed state, the top edge (150b) is positioned to face the edge of the center cover (180). This structure can maximize the shading effect by minimizing the gap between the shading wing (140) and the center cover (180) in shading mode.

[0088] A pair of side edges (150c) connect both sides of the top edge (150b) and both sides of the bottom edge (150a). Since the length of the top edge (150b) is shorter than the length of the bottom edge (150a), the pair of side edges (150c) are positioned to be inclined toward the top edge (150b).

[0089] An opening (151) is provided in the inner region of the body frame (150) to penetrate the body frame (150) in the thickness direction. The opening (151) formed in the body frame (150) provides various effects. That is, by providing an opening (151) in the body frame (150), the weight of the body frame (150) can be reduced, allowing the opening and closing operation of the shading wing (140) to be performed more smoothly. In addition, the opening (151) also provides the effect of minimizing thermal deformation of the body frame (150) due to temperature changes. In this way, the opening (151) enables the simultaneous securing of lightweighting and structural stability of the shading wing (140).

[0090] Additionally, optionally, the opening (151) can induce a natural airflow between the inside and outside of the shading wing (140). For example, if the shading film (153) is made of a material that allows air to pass through, air can flow through the opening (151), thereby reducing resistance to wind and improving the structural stability of the shading wing (140).

[0091] A weight (155) is placed on the body frame (150). The weight (155) is placed in the middle part of the bottom edge (150a) and serves to lower the center of gravity of the wing body (148). Therefore, the opening and closing operation of the light-blocking wing (140) according to the shape change of the shape memory member (170) can be performed more stably.

[0092] The tilting frame (141), the body frame (150), and the weight (155) can be formed as a single unit. For example, the tilting frame (141), the body frame (150), and the weight (155) can be manufactured as a single unit using a 3D printing method.

[0093] The light-blocking film (153) is attached to the body frame (150) and performs a light-blocking function. The light-blocking film (153) can be placed on the outer surface, inner surface, or both inner and outer surfaces of the body frame (150). The light-blocking film (153) can be made of various materials capable of blocking light, such as fabric, film, plastic, or metal.

[0094] Additionally, the shading film (153) may include an outer film and an inner film to maximize cooling and heating efficiency. The outer film may be a functional film for radiative cooling, and the inner film may be a functional film for increasing solar heat absorption efficiency. The outer film, which is a functional film for radiative cooling, may include a material having mid-infrared radiation function, and the inner film may include various materials having solar absorption properties, such as a solar absorption film or colored paint such as carbon black paint.

[0095] As described above, the light-blocking wing (140) has an optimized structure that enables effective automatic opening and closing according to the shape change of the shape memory member (170), while also enabling efficient light blocking. That is, the structure of the body frame (150) described above and the connection structure between the tilting frame (141) and the body frame (150) play an important role in optimizing the automatic opening and closing performance and light blocking effect of the light-blocking wing (140).

[0096] Specifically, as shown in FIGS. 2 and 3, a structure in which the bottom edge (150a) of the body frame (150) is formed to be longer than the top edge (150b) allows the gap between the shading wings (140) to be minimized in the shading mode, thereby effectively securing the shading area. In addition, by designing the top edge (150b) to face the edge of the center cover (180) in the shading mode, the gap between the shading wings (140) and the center cover (180) can be minimized, thereby achieving a more effective shading effect.

[0097] In addition, the structure in which the body frame (150) and the tilting frame (141) are connected at an acute angle and the end of the tilting frame (141) connected to the body frame (150) is positioned closer to the bottom edge (150a) than to the top edge (150b) is of significant importance. That is, by the tilting frame (141) forming an acute angle with the body frame (150) and the connection point being positioned closer to the bottom edge (150a) than to the top edge (150b), the light-blocking area of ​​the wing body (148) (the area projected vertically by the wing body (148) onto the surface of the object (10)) can be greatly increased even with a small change in the length of the shape memory member (170). Therefore, effective light-blocking performance can be achieved with less driving force.

[0098] Additionally, the structure in which a weight (155) is placed in the middle part of the bottom edge (150a) improves the operational stability of the light-shielding wing (140). By lowering the center of gravity of the light-shielding wing (140), the opening and closing operation of the light-shielding wing (140) according to the shape change of the shape memory member (170) is made smoother and more stable. In particular, when the light-shielding wing (140) moves from a closed position to an open position, the light-shielding wing (140) can move more smoothly.

[0099] In addition, the shading film (153) enables optimal energy efficiency to be achieved through a combination of functional films in accordance with changes in the external environment. That is, in the shading mode, the outer film blocks sunlight, and the cooling effect on the object (10) can be enhanced through radiative cooling by mid-infrared radiation. And in the shading release mode, the inner film is exposed to the outside to absorb solar heat, thereby enhancing the heating effect on the object (10).

[0100] Referring to FIGS. 4 and 5, the connecting member (160) acts as a link member that converts the linear motion of the moving member (130) into the tilting motion of the shading wing (140). The connecting member (160) includes a first end (161) and a second end (163).

[0101] The first end (161) is a part connected to the movable member (130) and is pivotally connected to the movable member (130). The first end (161) includes a first pivot pin (162). The first pivot pin (162) is inserted into the movable member groove (132) to form a pivot joint.

[0102] The second end (163) is connected to the light-shielding wing (140) via a pivot joint. The second end (163) includes a second pivot pin (164). The second pivot pin (164) is inserted into the bracket groove (146) of the second joint member (144) to form a pivot joint.

[0103] When the shape memory member (170) is extended and the moving member (130) moves away from the surface of the object (10), the connecting member (160) lifts the light-blocking wing (140) away from the surface of the object (10), and the light-blocking wing (140) is switched to a closed state. Conversely, when the shape memory member (170) is contracted and the moving member (130) moves toward the surface of the object (10), the light-blocking wing (140) is switched to an open state.

[0104] The connection structure between the connecting member (160) and the movable member (130), and the connection structure between the connecting member (160) and the light-blocking wing (140) can be varied. That is, the connecting member (160) and the movable member (130) can be pivotally connected in different ways, and the connecting member (160) and the light-blocking wing (140) can be pivotally connected in different ways.

[0105] For example, a groove is provided at the first end (161) of the connecting member (160), and the moving member (130) and the connecting member (160) can be pivotally connected by including a pivot pin into which the moving member (130) is inserted.

[0106] Additionally, a groove is provided at the second end (163) of the connecting member (160), and the second joint member (144) of the light-shielding wing (140) may be pivotally connected to the connecting member (160) by including a pivot pin into which the second joint member (144) of the light-shielding wing (140) is inserted.

[0107] The specific configuration of the connecting member (160) is not limited to that illustrated and can be varied. For example, the connecting member (160) may be configured to connect the movable member (130) and the wing body (148). Additionally, the connecting member (160) may be formed in the form of a different type of link connecting the movable member (130) and the light-shielding wing (140). Furthermore, the connecting member (160) may be formed in the form of a deformable wire. If the connecting member (160) is formed in the form of a wire, the connecting member (160) may be simply connected or fixed without the need to be pivotally connected to the movable member (130) and the light-shielding wing (140), respectively.

[0108] Referring to FIGS. 4 to 8, the shape memory member (170) acts as a driving source that enables powerless driving of the energy saving device (100) by reversibly changing its shape according to temperature changes.

[0109] In this embodiment, the shape memory member (170) is implemented in the form of a coil, and is arranged so that one end is connected to the connecting frame (113) and the other end is connected to the moving member (130). The shape memory member (170) is arranged in multiple numbers along the circumference of the guide (120), which more stably transmits driving force to the moving member (130), thereby enabling stable operation of the moving member (130).

[0110] The shape memory member (170) has the characteristic that its shape changes reversibly according to temperature changes. Specifically, under a temperature rise condition, the shape memory member (170) increases in length and stiffness, thereby causing the moving member (130) to move away from the surface of the object (10). Conversely, under a temperature fall condition, the shape memory member (170) decreases in length, and at this time, the moving member (130) descends.

[0111] In this way, by using the shape memory member (170) as a driving source, the energy saving device (100) according to one embodiment of the present invention can operate automatically without additional power devices such as a motor or battery. In particular, since the shape memory member (170) changes its shape on its own according to external temperature changes, it has the advantage of enabling autonomous light-blocking control without a separate control device.

[0112] In addition, various advantages can be obtained by implementing the shape memory member (170) in the form of a coil.

[0113] That is, the coil-shaped shape memory member (170) can achieve a large displacement in a smaller installation space compared to a straight shape of the same length, and can further improve the response speed to temperature changes. In addition, since the surface area of ​​the shape memory member (170) is increased, heat exchange with the external temperature can be performed more effectively, so the shading wing (140) can be operated more quickly and sensitively in response to external temperature changes.

[0114] In addition, the coil-shaped shape memory member (170) allows the stress applied thereto to be evenly distributed throughout the entire shape memory member (170). Therefore, it prevents stress from concentrating in specific areas and has the effect of improving durability and lifespan.

[0115] Accordingly, the coil-shaped implementation of the shape memory member (170) can provide various technical advantages such as miniaturization of the device, improved responsiveness, and increased durability.

[0116] However, the specific shape, number, and arrangement of the shape memory member (170) can be varied.

[0117] The shape memory member (170) can be formed from various shape memory materials. For example, the shape memory member (170) can be formed from a shape memory alloy (SMA), a shape memory polymer (SMP), or a shape memory ceramic, but the material of the shape memory member (170) is not limited thereto.

[0118] The shape memory member (170) may have at least one end fixed to the connecting frame (113) or the moving member (130). For example, the shape memory member (170) may be positioned so that one end is fixed to the connecting frame (113) and the other end simply contacts the moving member (130). In this case, when the shape memory member (170) contracts, the light-shielding wing (140) may move to an open position due to the load of the moving member (130) and the load of the light-shielding wing (140).

[0119] Additionally, the shape memory member (170) may be positioned so that one end simply contacts the connecting frame (113) and the other end is fixed to the moving member (130). In this case, when the shape memory member (170) contracts, the light-shielding wing (140) may move to an open position due to the load of the moving member (130) and the load of the light-shielding wing (140).

[0120] Additionally, the shape memory member (170) can have both ends fixed to the connecting frame (113) and the other end, respectively. In this case, when the shape memory member (170) contracts, in addition to the load of the moving member (130) and the load of the light-blocking wing (140), a force is added by the shape memory member (170) pulling the moving member (130) toward the connecting frame (113), so that the light-blocking wing (140) can move to an open position.

[0121] Referring to FIGS. 1 to 4, the center cover (180) is positioned at the end of the guide (120) and covers the space between the plurality of light-blocking wings (140) in a light-blocking mode. The center cover (180) serves to effectively block the gap that may be formed between the light-blocking wings (140) when the plurality of light-blocking wings (140) are switched to a closed state.

[0122] The center cover (180) includes a number of edges corresponding to the number of light-blocking wings (140). In the illustrated embodiment, four light-blocking wings (140) are arranged at 90-degree intervals, and the center cover (180) includes four edges. When the light-blocking wings (140) are switched to a closed state, the edges of the center cover (180) are each adjacent to the top edge (150b) of each of the plurality of light-blocking wings (140), thereby minimizing the gap between the light-blocking wings (140) and the center cover (180) and increasing the light-blocking effect in the light-blocking mode.

[0123] The specific configuration of the center cover (180) is not limited to that shown and can be varied depending on the number of shading wings (140), etc.

[0124] An energy saving device (100) according to one embodiment of the present invention can automatically switch between a light-blocking mode and a light-blocking release mode depending on changes in external temperature. Each operation mode will be described in detail below.

[0125] Referring to FIGS. 2, FIGS. 3 and FIGS. 5, under conditions where the temperature rises, the length of the shape memory member (170) increases and the rigidity increases, causing the plurality of light-blocking wings (140) to switch to a closed state. At this time, the energy saving device (100) operates in a light-blocking mode.

[0126] Specifically, as the shape memory member (170) extends, it pushes the movable member (130) upward. When the movable member (130) rises, the connecting member (160) connected to the movable member (130) tilts the light-blocking wing (140) upward. At this time, a plurality of light-blocking wings (140) are tilted simultaneously so that each light-blocking wing (140) can cover the surface of the object (10) to block light.

[0127] At this time, the cooling effect on the object (10) can be maximized through the solar blocking action of the shading film (153) and radiative cooling by mid-infrared radiation.

[0128] Referring to FIGS. 1 and FIGS. 4, under conditions where the temperature decreases, the length of the shape memory member (170) decreases and the plurality of light-blocking wings (140) are switched to an open state. At this time, the energy saving device (100) operates in a light-blocking release mode.

[0129] Specifically, as the shape memory member (170) contracts, the moving member (130) descends. When the moving member (130) descends, the light-blocking wing (140) tilts downward. At this time, the space between the plurality of light-blocking wings (140) is widened, and light can be incident on the surface of the object (10).

[0130] At this time, the inner membrane of the shading wing (140) is exposed to the outside to absorb solar heat, and the functional membrane of the base (111) increases the solar heat absorption efficiency, thereby maximizing the heating effect of the object (10).

[0131] Since the automatic mode switching of the energy saving device (100) is implemented by the reversible shape change of the shape memory member (170), it can actively respond to external temperature changes without the need for separate power or control devices.

[0132] Furthermore, since the tilting angle of the light-blocking wing (140) is naturally adjusted according to the change in length of the shape memory member (170), stepwise light-blocking control according to changes in the external environment is possible.

[0133] In addition, an energy saving device (100) according to one embodiment of the present invention can achieve optimal energy efficiency according to changes in the external environment through a combination of functional films having a radiative cooling function and functional films having a solar heat absorption function, and can simultaneously achieve energy saving effects for cooling and heating with a single device.

[0134] In addition, the energy saving device (100) according to one embodiment of the present invention has a simple connection structure between the light-blocking wing (140) and the shape memory member (170) and has a small number of parts. Also, the components are simple and easy to assemble.

[0135] That is, most components, such as the base frame (110), movable member (130), light-shielding wing (140), connecting member (160), and center cover (180), can be manufactured using 3D printing, which increases the flexibility of the manufacturing process and enables mass production. In addition, manufacturing costs and time can be significantly reduced, and the defect rate that may occur during the assembly process can be minimized.

[0136] FIG. 9 is a cross-sectional view showing an energy saving device according to another embodiment of the present invention.

[0137] Referring to the drawings, an energy saving device (200) according to another embodiment of the present invention further includes a cooling functional film (212) having a cooling function, a heating functional film (213) having a solar heat absorption function, and a base functional film (220). The cooling functional film (212) and the heating functional film (213) can be placed on a body frame (150) to form a light-shielding film of a light-shielding wing (210).

[0138] The cooling functional film (212) is placed on the outer surface of the body frame (150) and acts as a radiative cooler. When the light-blocking wing (140) is switched to a closed state, the temperature of the object (10) can be lowered by the radiative cooling effect of the cooling functional film (212).

[0139] The cooling functional membrane (212) may include a material having a mid-infrared radiation function. For example, the cooling functional membrane (212) may include a polymer material with excellent mid-infrared radiation properties such as PDMS (polydimethylsiloxane), PMMA (polymethyl methacrylate), DPHA (dipentaerythritol penta / hexa acrylate), SU-8, PVDF (polyvinylidene fluoride), etc. The cooling functional membrane (212) can lower the temperature of the object (10) by radiative cooling through mid-infrared radiation.

[0140] The heating functional membrane (213) is a solar absorber attached to the inner surface of the body frame (150) and can absorb sunlight to provide thermal energy to the object (10). The heating functional membrane (213) may include various materials having solar absorption properties, such as a solar absorption film or colored paint such as carbon black paint. When the shading wing (140) is switched to an open state, the heating functional membrane (213) is exposed to the outside and effectively absorbs solar heat. The heating functional membrane (213) can enhance the heating effect of the object (10) in cold weather.

[0141] The base functional film (220) is a solar heat absorber placed on the surface of the base (111) and performs the same function as the heating functional film (213). In the light-blocking release mode, the base functional film (220) is exposed to sunlight to perform an additional solar heat absorption function.

[0142] An energy saving device (200) according to another embodiment of the present invention enables optimal energy efficiency to be achieved through a combination of functional films in accordance with changes in the external environment. That is, in a light-blocking mode, the cooling effect can be enhanced through the cooling functional film (212), and in a light-blocking release mode, the heating functional film (213) and the base functional film (220) can absorb solar heat to enhance the heating effect.

[0143] The types and arrangements of the functional membranes may be changed depending on the usage environment. For example, in a high-temperature and high-humidity region, only a cooling functional membrane (212) with a radiative cooling function may be adopted, and in a cold region, only a heating functional membrane (213) or a base functional membrane (220) with a solar heat absorption function may be adopted.

[0144] The cooling functional film (212) and the heating functional film (213) can form a light-blocking film. For example, if the light-blocking wing (210) includes only the cooling functional film (212), the cooling functional film (212) can form the light-blocking film of the light-blocking wing (210). If the light-blocking wing (210) includes only the heating functional film (213), the heating functional film (213) can form the light-blocking film of the light-blocking wing (210). Additionally, if the light-blocking wing (210) includes both the cooling functional film (212) and the heating functional film (213), the cooling functional film (212) and the heating functional film (213) can form the light-blocking film of the light-blocking wing (210).

[0145] Additionally, the light-blocking wing (210) may further include a separate film that performs only a light-blocking function in addition to the cooling functional film (212) and the heating functional film (213). In this case, the cooling functional film (212) or the heating functional film (213) may form a light-blocking film together with the separate film.

[0146] Although preferred examples of the present invention have been described above, the scope of the present invention is not limited to the forms described and illustrated above.

[0147] For example, the shape memory member (170) can be changed into other forms that can provide movement force to the moving member (130) according to shape deformation, such as a plate form or a wire form, in addition to the coil form.

[0148] Additionally, the moving member (130) can be positioned to move without a guide (120).

[0149] In addition, the number and shape of the shading wings (140) (210) can be varied.

[0150] Additionally, the sunshade wing (140) (210) can be modified so that the wing body (148) is directly connected to the connecting frame (113) in a tiltable manner without the tilting frame (141).

[0151] In addition, the connection method between the moving member (130) and the shading wing (140) (210) can also be changed to a different method, such as a multi-link method, in addition to the single connection member (160) connection method.

[0152] In addition, the energy saving device according to the present invention may maintain a non-powered method using a shape memory member (170) and may include additional components that can assist the tilting operation of the light-blocking wing (140) (210), such as an auxiliary spring.

[0153] In addition, the energy saving device according to the present invention can function as an energy-saving shading device capable of selectively blocking sunlight according to external temperature changes.

[0154] Although the embodiments of this specification have been described in more detail with reference to the attached drawings, this specification is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical spirit of this specification. Accordingly, the embodiments disclosed in this specification are intended to explain, not to limit, the technical spirit of this specification, and the scope of the technical spirit of this specification is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

[0155]

[0156] [National R&D projects that supported this invention]

[0157] [Project ID] 2024040037

[0158] [Assignment No.] 2024040037

[0159] [Ministry Name] Ministry of Science and ICT

[0160] [Name of Project Management (Specialized) Agency] (New) National Research Foundation of Korea (Integrated)

[0161] [Research Project Name] Outstanding Young Researcher

[0162] [Project Title] Development of High-Performance Soft Actuators for Micro Flying Robots

[0163] [Name of Project Performing Organization] Daegu Gyeongbuk Institute of Science and Technology

[0164] [Research Period] April 1, 2024 ~ March 31, 2025

[0165] [National R&D projects that supported this invention]

[0166] [Project ID] 2710016371

[0167] [Assignment No.] 2710016371

[0168] [Ministry Name] Ministry of Science and ICT

[0169] [Name of Project Management (Specialized) Agency] (New) National Research Foundation of Korea (Integrated)

[0170] [Research Project Name] Future Technology Research Lab

[0171] [Research Project Title] Development of Infrared Emissivity Control Materials for Energy Saving in Everyday Environments

[0172] [Name of Project Performing Organization] Yonsei University

[0173] [Research Period] 2024.01.01 ~ 2024.12.31

[0174] [National R&D projects that supported this invention]

[0175] [Project ID] 2710006244

[0176] [Assignment No.] 2710006244

[0177] [Ministry Name] Ministry of Science and ICT

[0178] [Name of Project Management (Specialized) Agency] (New) National Research Foundation of Korea (Integrated)

[0179] [Research Project Name] Nanomaterial Technology Development (R&D) - Materials Global Young Connect

[0180] [Project Title] Development of a Theramorphic Magnetic Composite Material Platform for Orally Administered All-in-One Soft Robots

[0181] [Name of Project Performing Organization] Ulsan National Institute of Science and Technology

[0182] [Research Period] April 1, 2024 ~ December 31, 2024

[0183] [National R&D projects that supported this invention]

[0184] [Project ID] 2710018118

[0185] [Assignment No.] 2710018118

[0186] [Ministry Name] Ministry of Science and ICT

[0187] [Name of Project Management (Specialized) Agency] (New) National Research Foundation of Korea (Integrated)

[0188] [Research Project Name] Group Research Support (R&D) - Global Leading Research Center (ERC)

[0189] [Research Project Title] Global Bio-convergence Interfacing Materials Center

[0190] [Name of Project Performing Organization] Korea Advanced Institute of Science and Technology

[0191] [Research Period] 2024.08.01 ~ 2025.04.30

Claims

1. Base frame; A sunshade wing tiltably connected to the base frame above; A shape memory member disposed on the above base frame, wherein the shape changes reversibly according to temperature changes; A moving member connected to the shape memory member to move according to the shape change of the shape memory member; and An energy saving device comprising a connecting member connecting the movable member and the light-shielding wing so that the light-shielding wing tilts according to the movement of the movable member.

2. In Paragraph 1, The above shape memory member is, Under temperature rise conditions, the shape of the shading wing is deformed to switch to a closed state that performs a shading function for the object, and An energy saving device that undergoes shape deformation so that the shading wing switches to an open state to release the shading function for the object under temperature drop conditions.

3. In Paragraph 2, The above shape memory member is an energy saving device formed in the shape of a coil.

4. In Paragraph 2, The above base frame is, It includes a connecting frame disposed on the surface of the object, and The above-mentioned light-blocking wing is, A tilting frame tiltably connected to the above connecting frame; and An energy-saving device comprising a wing body connected to the tilting frame so as to cover the surface of the object.

5. In Paragraph 4, An energy saving device comprising a guide positioned on the connecting frame to guide the above-mentioned moving member to move linearly.

6. In Paragraph 5, The above shape memory member is, An energy saving device formed in the shape of a coil, with one end connected to the above-mentioned connecting frame and the other end connected to the above-mentioned moving member.

7. In Paragraph 6, The above shape memory member is, Energy saving devices arranged in multiple numbers around the above guide.

8. In Paragraph 5, The above-mentioned shading wings are energy-saving devices arranged in multiple numbers along the circumference of the above-mentioned guide.

9. In Paragraph 8, An energy saving device comprising a center cover disposed at the end of the guide so as to cover the space between the plurality of light-blocking wings when the plurality of light-blocking wings are switched to the closed state.

10. In Paragraph 9, The above wing body is, A body frame connected to the above tilting frame; and An energy saving device comprising a light-blocking film coupled to the above body frame.

11. In Paragraph 10, The above body frame is, A top edge positioned to face the edge of the center cover when the light-blocking wing is switched to the closed state; A bottom edge that is longer than the top edge and positioned closer to the surface of the object than the top edge; and An energy saving device comprising a pair of side edges connecting both sides of the top edge and both sides of the bottom edge.

12. In Paragraph 11, The above tilting frame is an energy saving device connected to the above body frame at an acute angle.

13. In Paragraph 12, The tilting frame has an end connected to the body frame positioned closer to the bottom edge than to the top edge, and An energy saving device in which a weight is placed in the middle part of the bottom edge.

14. In Paragraph 4, The above connecting member is, An energy saving device in which one end is pivotally connected to the moving member and the other end is pivotally connected to the tilting frame.

15. In Paragraph 1, The above-mentioned light-blocking wing is, An energy saving device comprising a cooling functional film disposed on the outer surface to perform a radiative cooling function.

16. In Paragraph 1, The above-mentioned light-blocking wing is, An energy saving device comprising a heating functional membrane disposed on the inner surface to perform a solar heat absorption function.

17. In Paragraph 1, An energy saving device comprising a base functional membrane disposed on the above base frame and performing a solar heat absorption function.

18. Base frame; A shape memory member disposed on the base frame and having a shape that changes reversibly according to temperature changes; and An energy saving device comprising a light-blocking wing connected to the shape memory member so as to switch to a closed state or an open state according to a change in the shape of the shape memory member.

19. In Paragraph 18, The above-mentioned light-blocking wing is, Under temperature rise conditions, the shape memory member is switched to a closed state by increasing its length, and An energy saving device that switches to an open state by reducing the length of the shape memory member under temperature drop conditions.

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