THERMOS WITH BREAKAGE SAFETY AND PASSIVE OPTICAL LIQUID LEVEL INDICATOR.

Abstract

The invention relates to a thermos (1) which is used to maintain the temperature of hot and / or cold liquids for a certain period of time, with a transparent and flexible safety film (5) permanently attached to the inner surface (4) of the glass inner chamber (3) which is in contact with the liquid and is circumferentially anchored through the neck connection area (17) and / or base connection area (18), which is placed in such a way as to create a vacuum gap (8) inside the outer body (2), and which forms a temporary liquid holding volume (24) by holding the glass fragments (19) together in case of breakage of the glass inner chamber (3), optical surface formations (6) consisting of micro-optical units formed on the safety film (5) and / or within the film thickness, including the first inclined optical surface (21) and the second inclined optical surface (22), and which enables the liquid level inside the thermos to be shown passively optically in the form of a circumferential brightness band (13).

Description

1 TARIFF FEATURES BREAKAGE SAFETY AND PASSIVE OPTICAL FLUID LEVEL INDICATOR. THERMOS TECHNICAL AREA 5 The invention is a device with a glass inner chamber and a thermostat, used for storing hot or cold liquids. insulated, continuously attached to the inner surface of the glass inner chamber that comes into contact with the liquid, and with at least one end a transparent and flexible safety film, environmentally anchored to the area, of the glass container its ability to hold glass fragments in case of breakage and create a temporary liquid-holding volume; the same film 10 It has first and second curved optical surfaces arranged along its inner circumference. In micro-optical structures, light entering through the thermos spout and returning from the reflective layer is reflected by the meniscus. by redirecting it back towards the thermos mouth at that level, it creates a peripheral band of brightness. It is related to thermos. STATE OF THE ART Thermoses keep hot or cold liquids at their desired temperature for a specific period of time. These are heat-insulated containers that allow for the storage of heat. In common thermoses, this is usually done inside the outer casing. They have a vacuum-insulated glass or metal-based inner chamber, and thermoses with glass inner chambers are 20 They are widely preferred due to their high thermal insulation performance. However, Glass inner chambers are susceptible to damage from impact, sudden temperature changes, manufacturing defects, or exposure during use. They can crack or break due to the mechanical stresses they are subjected to. The glass container If it breaks, glass fragments can mix with the liquid inside the thermos, and especially The uncontrolled release of hot liquid is a concern for user safety. 25 This creates risks. Furthermore, classic thermoses have an opaque outer casing. The liquid level inside is not directly visible; the user can check the remaining liquid amount. To determine this, one needs to open the lid and look inside the compartment. The inside of the thermos... the darkness of the part, the depth of the inner chamber, the transparency of the liquid, the ambient lighting Due to its insufficiency and reflections inside the thermos, the liquid surface is easily noticeable. 30 It may not be possible. In some products used in the known state of the art, breakage occurs on the outside of the glass container. Preventive measures or coatings that reduce the shattering of glass fragments are used. However, a coating on the outer surface prevents the glass fragments from separating directly into the liquid side. 35 It cannot prevent it in every situation. 2 A meniscus develops due to surface tension at the point where the liquid meets the glass or film surface. A curved boundary, called a curved boundary, is formed. Although this physical phenomenon is known, it is currently... In thermoses, the liquid level can be monitored by utilizing the optical properties of the meniscus region to inform the user. a passive optical display system that allows for easy perception Not available. 5 In the literature search conducted on the known condition of the technique, CN201088493Y was identified. In patent document number [number], a mutually transparent structure is created on the glass reservoir and outer casing. The liquid level inside the thermos can be seen directly from the outside through the windows. Information regarding observation is explained in this document. This document describes the liquid level and the viewing window. It is based on the principle of generating ambient light through micro-optical structures. optical evaluation of the orientation or meniscus effect occurring on the fluid surface That is not the case. Furthermore, this document also mentions that in the event of the glass container breaking, the glass fragments... a device that holds, temporarily stores, or provides a safety function for liquids within the same structure. No security video has been released that simultaneously demonstrates this level of security. In the literature review conducted on the known condition of the technique, CN202891685U 15 was identified. In patent document number [number], a protective structure is positioned on the outside of the glass container. using the process of breaking the glass and scattering the hot liquid. The aim is to reduce [the impact of glass]. However, in this solution, the protective structure is glass. It is not located on the inner surface of the reservoir that comes into contact with the liquid; the glass fragments are on the liquid side. It does not form a permanently attached safety film and a temporary liquid 20 after rupture It does not create a holding volume. Furthermore, this document describes the liquid level as passive optical. any micro-optical structure or optical display system for showing by method It is not available. In conclusion, the existence of the above problems and the inadequacy of current solutions affect glass interiors. In the event of a reservoir breakage, it keeps both glass fragments and liquid under control and is 25 Also, the liquid level inside the thermos can be checked using any electronic sensor or separate light. A new thermos structure is needed that makes the source visible without using it. THE PURPOSE OF THE INVENTION The main purpose of the invention is to prevent breakage that may occur in thermoses with glass inner containers, resulting in 30 reducing the resulting safety risks and at the same time maintaining the liquid level inside the thermos an improved thermos structure that allows for easy identification by the user to provide. 3 The purpose of the invention is to create a transparent casing permanently bonded to the inner surface of the glass inner chamber that comes into contact with the liquid. and, thanks to a flexible safety film, the glass that forms in the event of a glass container breaking, is protected. The aim is to limit access to the user by keeping the components on the liquid side. Another purpose of the invention is to utilize the flexible nature of the safety film to protect the inner glass chamber. the sudden and uncontrolled release of fluid after a rupture, at least temporarily 5 The goal is to delay it for a while, thereby increasing user security. Another purpose of the invention is to apply the safety film to the inner glass chamber from the perimeter at least at one end. by anchoring it in place, under the load created by the glass fragments and liquid after fracture. The goal is to ensure the film's integrity is preserved and that it can continue to fulfill its purpose. Another purpose of the invention is to create 10 on or within the film thickness of the safety film. Through micro-optical surface formations, ambient light entering through the thermos spout and the thermos itself... By using the light reflected from the reflective layer inside, it can determine the location of the liquid surface. The goal is to create a peripheral brightness band at that level. Another purpose of the invention is to treat the condition that occurs in the meniscus region where the fluid meets the film surface. By taking advantage of differences in optical behavior, any electronic sensor, battery, camera, additional 15 liquid inside the thermos without using a light source or moving indicator element The goal is to make its level visible using passive optical methods. Another purpose of the invention is to provide fracture protection with a safety film and passive optical fluid. By bringing together level display functions on the same integrated structure, additional indicators a 20 that increases both safety and ease of use without the need for additional personnel The goal is to provide a thermos-like structure. The structural and characteristic features and all the advantages of the invention are given in the figures below. Thanks to the detailed explanation written with references to the figures, it becomes clearer. This will be understood, and therefore the evaluation will also take these forms and detailed explanations into account. It must be done by taking 25. BRIEF DESCRIPTION OF THE FIGURES The best way to utilize the advantages of the existing invention, together with its structure and additional elements. For it to be understood, it must be considered together with the figures explained below. 30 Figure 1: Perspective view of the thermos that is the subject of the invention. Figure 2: Longitudinal section view of the thermos. 4 Figure 3: Magnified cross-section of the glass inner chamber, safety film, vacuum gap, and reflective layer. It is the appearance. Figure 4: Micro-optical protection film with primary and secondary inclined optical surfaces. It is a magnified cross-sectional view of the unit. Figure 5: Light behavior in the liquid contact area, dry area, and meniscus area. This is a schematic view. Figure 6: The top view of the peripheral brightness band as seen from the thermos opening. It is the appearance. Figure 7: After the glass inner chamber breaks, the safety film traps glass fragments and liquid. This is the schematic view of holding. 10 REFERENCE NUMBERS 1. Thermos 2. Outer casing 15 3. Glass inner chamber 4. Inner surface in contact with the liquid 5. Security film 6. Optical surface formation 7. Reflective layer 20 8. Vacuum space 9. Thermos spout 10. Liquid 11. Liquid surface 12. Meniscus area 25 13. Ambient brightness band 14. Film area in contact with the liquid. 15. Dry film zone 16. Cover 17. Neck attachment area 30 18. Base connection area 19. Piece of glass 20. Light ray 21. First inclined optical surface 22. Second inclined optical surface 35 23. Micro-optical unit 24. Temporary fluid retention volume 25. External support staff 26. Inner film surface 27. The contact surface between the film and the glass. The drawings do not necessarily need to be scaled and are sufficient to understand the existing invention. Details that are not present may have been overlooked. Furthermore, at least to a large extent... Elements that are identical or at least have substantially identical functions are numbered the same. It is shown. DETAILED DESCRIPTION OF THE INVENTION 10 The thermos (1) that is the subject of the invention enables the long-term preservation of hot or cold liquids. In case of breakage of the inner glass chamber (3), it increases user safety and at the same time The liquid level inside the thermos is monitored passively optically without the use of any electronic components. It has an integrated structure that allows it to be observed using this method. Thermos (1); outer body (2), glass inner chamber (3), inner glass inner chamber (3) in contact with liquid 15 surface (4), security film (5) which is continuously attached to the inner surface in question, security film (5) Optical surface formations created on or within the film thickness (6), inside the glass reflective surface located on at least one of the surfaces facing the vacuum space (8) of the reservoir (3) It includes a layer (7), a thermos mouth (9) and a lid (16) that closes the thermos mouth. The outer casing (2) provides mechanical strength and protects the glass inner chamber (3) from external environmental effects. It forms the protective carrier body. The outer body (2) is made of stainless steel, metal alloy, polymer-based composite materials or similar durable materials that can be used in thermos production. It can be manufactured from materials. The main function of the outer casing (2) is to provide mechanical protection. not only that, but also the glass inner chamber (3) can be transported in the appropriate position and vacuum insulation The aim is to ensure the protection of the system. 25 The glass inner chamber (3) allows the hot or cold liquid (10) kept inside the thermos to be directly placed inside. It forms the main storage compartment with which it comes into contact. The inner glass chamber (3) is single-walled. It can be produced, or in the preferred application, a structure is created between the inner and outer glass walls. It consists of a double-walled structure that provides high thermal insulation thanks to the vacuum gap (8). It is coming. 30 The vacuum gap (8) significantly increases heat transfer by conduction and convection. while reducing the surface of at least one of the glass walls facing the vacuum gap (8) The reflective layer (7) improves the thermos' heat retention performance by reflecting heat radiation back. 6 It increases. Reflective layer (7), metallic coating, silvering, aluminum-based coating or it can consist of thin film structures with similar high reflectivity. On the inner surface of the glass inner chamber (3) which is in contact with the liquid (4), a transparent and flexible structure There is a safety film (5). The safety film (5) completely covers the inner surface of the glass inner chamber (3). It can be applied to cover the entire area, or to the area at risk of fracture. Option 5 In the implemented procedure, the safety film (5) starts from the bottom of the inner glass chamber and goes down to the neck. It forms a single, continuous structure that extends uninterrupted to the region. Safety film (5) is applied to the inner glass chamber (3) along the bonding surface (27) between the film and the glass. It is continuously connected. This connection is optically transparent depending on the application requirements. Use of adhesive, lamination after surface activation, hot pressing, thermal 10 Bonding, plasma processing, ultraviolet-cured binders, in-situ polymerization, This can be achieved using spray coating or a similar method. The continuous connection prevents gaps from forming between the film and the glass, thus ensuring both optical stability. both maintaining performance and ensuring uninterrupted load transfer after a fracture. It makes it happen. 15 Safety film (5), polymer, elastomer, multilayer composite with high optical transmittance. They can be produced from film or food-safe transparent materials. Film material When selecting, not only optical transmittance but also tensile strength and tear resistance are considered. also features such as stability against temperature changes, chemical resistance, and long-term use. is taken into consideration. 20 The attachment of the safety film (5) to the glass inner chamber (3) is only by surface adhesion. It is not restricted. In the preferred application, safety film (5), neck connection area (17) and / or the base connection area (18) are anchored circumferentially. The anchor structure directly distributes axial and circumferential tensile forces that may occur on the film. by transferring the film to the glass container (3) or to the external support element (25) It significantly limits it. The neck connection area (17) extends circumferentially just below the thermos mouth (9). and secures the top part of the safety film (5). Similarly, the base connection area (18), by creating a circumferential connection at the base of the inner glass chamber, the bottom of the film It fixes the section. Thus, the safety film (5) only adheres after breakage. It remains attached to the glass container not only by force, but also by the effect of mechanical anchoring. In some applications, only the neck connection area (17) or only the base connection The area (18) can be arranged in such a way as to create a circumferential anchor. The connection surface 7 In applications where mechanical strength is sufficient, unilateral anchoring may be adequate. However, the preferred practice is to create environmental anchors at both end regions. Thanks to the safety film (5), the weight of the glass fragments and the liquid after breakage It maintains its integrity and continues to function even under hydrostatic pressure. As a result of this structural arrangement, the safety film (5) lasts for 5 hours during the normal use of the thermos. While the glass acts as an integral part of the inner chamber, any breakage may occur. Unless otherwise specified, an additional application is needed on the inner surface where the user comes into direct contact with the liquid. does not create any difficulty and the carrier platform of the optical display system It constitutes. Safety film (5) serves only as a mechanical safety element holding glass fragments. 10 It does not only not do this, but it also provides the carrier structure for the passive optical liquid level display system. This is done on the security film (5) or within the film thickness. There are numerous optical surface formations (6). Optical surface formations (6), film production molding, micro-relief, precision pressing, laser processing, photolithography, micro 15 It can be brought. Optical surface formations (6) are multiple successive formations along the inner circumference of the glass inner chamber (3). It consists of a number of microoptical units. Each microoptical unit is a thermos at least one that accepts light rays (20) from its mouth (9) or from the reflective layer (7). with the first inclined optical surface (21) at least part of the light rays in question are determined 20 It consists of a second inclined optical surface (22) that redirects back to the observation region. The first The geometric structure of the first inclined optical surface (21) and the second inclined optical surface (22) affects the incidence of light. direction, refractive index of the film, refractive index of the liquid, and the intended viewing angle are taken into consideration. This is determined by taking these factors into account. Micro-optical units, depending on the application, can be peripheral rings, approximately horizontal rings, 25 in the form of helical sequences, vertical rows, or various combinations of these arrangements. can be created. In the preferred application, micro-optical units are around the glass inner chamber (3). They are arranged in such a way as to form continuous circular rows. Thus, when viewed from the mouth of the thermos (9), the liquid level can be seen not only from a particular direction, It can also be perceived from different environmental perspectives. 30 The tilt angle, height, pitch, and geometric form of each micro-optical unit; thermos diameter of the mouth (9), diameter of the inner glass chamber (3), thickness of the safety film (5), reflective layer (7) taking into consideration the location and the optical properties of the film material to be used 8 This is determined. Thus, the optical activity occurring in the region where the liquid level is located is identified. The change is clearly separated from neighboring regions. Optical surface formations (6) in relief on the outer surface of the safety film (5) While it is possible to create micro-optical structures from film, the preferred application is... It is created within a thickness of 5. Thanks to this arrangement, direct contact with the liquid is avoided. The inner film surface (26) remains flat, uninterrupted and easy to clean, micro-optical The wear and tear or dirt accumulation on surfaces over time is significantly reduced. Preferably rounded transition zones at the edges of micro-optical surface formations (6) It is formed from micro-optical units (23). These transition zones are formed from the surface of the liquid. It reduces the retention of dirt, facilitates cleaning, and prevents dirt accumulation on optical surfaces. It limits the performance losses that may occur due to this. When the lid (16) is opened during normal use of the thermos (1), ambient light comes out of the thermos mouth (9) fits into the glass inner chamber (3). Since the outer body of the thermos (2) does not transmit light, the inside The primary light source reaching the reservoir is the ambient light entering through the thermos spout (9). The light entering A portion of the rays (20) directly form the optical surface formations (6) on the safety film (5) 15 while reaching, another part is re-contained into the interior volume by the reflective layer (7). They are directed. Thus, micro-optical units receive light rays coming from different directions. It has sufficient optical energy to be used. When liquid (10) is present in the glass inner chamber (3), a part of the safety film (5) is mixed with the liquid. The contact film region (14) and the other part is the dry film region (15) are two different optical 20 It creates an environment. In the dry region, there is a film-air interface, while in contact with the liquid... A film-liquid interface forms in the region where the refractive indices of the film and liquid are located. Because of their differences, the behavior of light in refraction, reflection, and redirection differs from one another. It happens differently. At the level where the liquid surface (11) is located, 25 extends circumferentially due to the effect of surface tension. The meniscus region (12) is formed. The meniscus region (12) consists of a smooth fluid surface. Because it has a curved geometry, light rays traveling in this region are refracted. The angles and directions of reaching the micro-optical units on the safety film (5) vary. Thus, from the microoptic units located at the meniscus level back to the thermos mouth (9) The amount of directed light is reflected back by the microoptical units located below and above the meniscus. It becomes different from the amount of light directed at it. As a result of this optical difference, the liquid surface (11) is circumferentially at the height where it is located. The extended micro-optical row is higher than the adjacent rows when viewed from the thermos mouth (9). 9 This creates brightness, more pronounced contrast, or a different optical appearance. Thus any electronic sensor, motion indicator, buoy, battery, camera or additional light Without using a source, an environmental brightness band (13) is formed that shows the liquid level. The ambient brightness band (13) varies depending on the geometry of the optical surfaces. a ring, contrast boundary, peripheral band showing color separation or difference in light intensity 5 It can be perceived in this way. The important aspect from an inventive point of view is the formation of a specific color. No, the height at which the liquid level is located can be distinguished by the user from other areas. The goal is to make it possible to adapt the micro-optical surface geometry to different film materials. or can be modified by using different refractive indices, but the working principle It is protected. 10 During the normal service life of the glass inner chamber (3), the safety film (5) is applied continuously to the glass surface. It is attached and is mechanically an integral part of the glass inner chamber. It behaves accordingly. Therefore, during normal use, the safety film (5) is used to contain the liquid. It does not negatively affect the cleaning or filling processes of the thermos. The same applies to... by forming the carrier structure of optical surface formations (6) passive optics 15 It ensures the display system operates continuously. Dropping, impact, exposure to sudden temperature changes or glass of the thermos (1) As a result of structural weaknesses in the material, the glass inner chamber (3) may crack or It can be completely broken. Broken glass fragments (19) that occur during glass breakage, safety Thanks to the continuous connection surface (27) created between the film (5) and the film, 20 from the film The glass fragments are held in place on the safety film without separating. This prevents them from directly entering the liquid. (10) its free distribution into it is largely restricted. After the glass container (3) is broken, the safety film (5) only covers the glass fragments. It acts as a passive coating that carries, but also protects the broken glass container. It creates a flexible load-bearing structure that preserves its geometry as much as possible. 25 Thanks to the high tensile strength and tear resistance of the film material, broken glass pieces... They largely maintain their own positions and are carried along by the film. After the break, the hydrostatic pressure of the liquid inside the thermos (10) directly It is transferred onto the security film (5). In this case, the security film (5) has a flexible structure. It can only deform to a limited extent due to this, but thanks to its surrounding anchoring structures, it can 30 The glass remains intact within the inner chamber, continuing its function. Thus, the broken glass remains inside the chamber. temporary fluid retention volume (24) is created where fluid can be retained at least temporarily. It is coming. Temporary liquid holding volume (24) is designed to ensure that the broken thermos can be used for a long time. No, to delay the sudden fluid release that may occur at the moment of rupture. This delay allows the user to place the thermos on a secure surface. They are able to let go, remove it from their hand, or empty it in a controlled manner. This is especially true when using with hot water, tea, coffee, and similar high-temperature liquids. Delaying treatment significantly contributes to reducing the risk of burns. along the neck connection area (17) and base connection area (18) of the safety film (5). The created perimeter anchors ensure that the loads generated after fracture are safely distributed. It enables transportation. The weight of the glass pieces and the hydrostatic charge of the liquid act as a safety film. When tensile forces are generated on it, these forces are transferred to the anchor points. This is how the safety film is transferred. Thus, the film is gathered towards the mouth of the thermos, away from the glass surface. peeling off completely or losing its connection due to the weight of broken glass fragments is significantly prevented. The contact surface between the film and the glass (27) not only serves the purpose of adhesion, but also It creates a continuous interface that enables charge transfer over time. The connection is 15 Due to its continuous nature, the loads do not concentrate at specific points, the safety film It is transported by being distributed throughout the entire area. Thus, local stress concentrations occur in the film material. This reduces the risk of fracture, and the integrity of the system can be maintained for a longer period after the fracture. In some applications, the security film (5) may consist of a single-layer structure. Other In applications, the film is a multi-layered composite structure that performs various technical tasks. It can be produced in this way. In this case, the bonding layer, which is directly bonded to the glass, withstands mechanical loads. load-bearing reinforcement layer, liquid-tight elastomeric layer, and optical surface. The optical layer carrying the formations (6) works in constant connection with each other. Layer The number and thickness of the thermos depend on the volume of the thermos to be used, the operating temperature, and the mechanical properties. It can be modified depending on the strength requirements. 25 Optical surface formations (6) can be formed on the entire security film (5) or only on the entire film (5). It can also be created in the altitude zone where the liquid level may change. Similarly Micro-optical units exist not only in ring-shaped arrays, but also in helical, vertical, curved, or various other configurations. They can also be arranged in geometric configurations. The angles, steps, and of micro-optical surfaces Their geometries can be modified according to different applications, and their working principle is similar to thermos 30. The ambient light entering through the mouth exhibits different optical behavior in the meniscus region compared to other levels. It is based on its creation. Security film (5) is available in different thicknesses, different optical transmittance values ​​or different polymers. It can be produced from basic materials; the reflective layer (7) is also metallic coating, dielectric 11 consisting of multi-layered coatings or similar different structures with high reflectivity These changes do not alter the fundamental operating principle of the invention, but only... Applications vary depending on the intended use and production method. The system described in the invention is suitable for use in household thermoses, tea and coffee thermoses, and hot water thermoses. laboratory containers, insulated transport containers used in the healthcare sector, chemical 5 in safety containers for storing liquids and similar heat-insulated glass inner chambers It can be applied in containment systems. In conclusion, the invention involves a device with a glass inner chamber that is continuously and peripherally bonded to the inner surface in contact with the liquid. anchored safety film (5) and created on or within this film by bringing together micro-optical surface formations (6) within the same integrated structure, glass 10 In the event of a container breakage, glass fragments and liquid should be controlled, at least temporarily. It ensures that it is kept under control, and also that any electronic sensors, batteries, or moving parts are not present. Determining the level of liquid using passive optical methods without requiring a mechanism or additional light source. This makes it easily perceptible by the user. Thus, a single structural element Using this method, both refractive safety and passive optical liquid level indication are provided together. 15 is being carried out Brief Working Principle of the Invention: When liquid (10) is poured into the thermos (1), the liquid is in contact with the inner glass chamber (3) It is in direct contact with the safety film (5) on its surface (4). The safety film (5), Since the glass inner chamber (3) is continuously connected, there is an additional 20 between the liquid and the glass surface. No gaps occur, and the thermos's normal functional properties are preserved. When the lid (16) is opened, ambient light enters the interior through the thermos opening (9). A portion of the incoming light rays (20) directly on the optical surface of the safety film (5) while reaching their formations (6), another part of the glass inner chamber (3) faces the vacuum space (8) By being reflected by the reflective layer (7) on its surface, it is transferred back onto the safety film (5) 25 Thus, optical surface formations (6) are directed, light coming from different directions. It obtains sufficient lighting to utilize the rays. As the level of the liquid (10) inside the thermos changes, a part of the safety film (5) One part of the film is in contact with air, and the other part is in contact with liquid. This is the film-air interface and the film-liquid interface. Due to the different optical properties of its surface, the light reaching micro-optical units is 30 The refraction and reflection behavior of the rays also differs. The meniscus region (12), formed at the level where the liquid surface (11) is located, has a curved geometry. due to the direction of incidence of light rays and their interaction with micro-optical surfaces 12 It is changing. As a result, the microoptical units located at the meniscus level, Different amounts of light from the micro-optical units located at adjacent levels are reflected back into the thermos mouth (9) It directs. When the user looks inside the thermos from above, only the height where the liquid surface is located is visible. The surrounding peripheral microoptical array is clearly perceptible, and the peripheral brightness band is 5. (13) occurs. Thus, the user can use any electronic sensor, battery, float, Liquid inside the thermos without a moving indicator element or additional light source He can see the level directly. If the inner glass chamber (3) is damaged or broken, the safety film (5) will protect the glass. Because it is constantly attached to the surface, most of the broken glass pieces (19) are on it. It holds. The mechanical loads generated after the fracture are distributed along the safety film (5). circumferential anchoring via neck connection area (17) and base connection area (18) It is transferred to the points. Thus, the safety film (5) is filled with the weight of the glass fragments and the liquid. Despite its hydrostatic pressure, it continues to perform its function without separating from the glass container. Even if the geometry of the glass container is not fully preserved, the safety film (5) protects against broken glass fragments. By carrying it together, it creates a temporary liquid holding volume (24). Thanks to this temporary volume The sudden release of the liquid is delayed, and the user is able to safely store the thermos. This provides enough time to leave or empty the vehicle in a controlled manner. Therefore, in the invention, the safety film (5) only holds the glass fragments after breakage. not only as a mechanical element, but also as a carrier of micro-optical surface formations (6) 20 It functions as such; providing both fracture resistance and passive resistance through a single structural element. Optical fluid level indication is performed simultaneously. Thus, an additional indicator is provided. a single integrated structure without the use of mechanisms or independent safety elements Two different technical functions are performed through it. The scope of protection for this application is defined in the claims section and is explicitly mentioned above in section 25. The examples given cannot be limited to those that a technically skilled person demonstrates in the invention. the innovation introduced can be created by using similar structures and / or this It is clear that this structure can be applied to other areas with similar purposes using the same technique. Therefore, such structures foster innovation and, in particular, surpass the known state of technology. It is also obvious that it will lack the criterion. 30

Claims

13 REQUESTS 1. The invention describes a method for maintaining the temperature of hot and / or cold liquids for a specified period of time. used for the purpose of creating an outer shell (2), vacuum space (8) placed glass inner chamber (3) and looking into the vacuum space (8) of the glass inner chamber (3). a thermos (1) containing a reflective layer (7) on at least one of its surfaces, 5 feature; • to the inner surface (4) of the glass inner chamber (3) that is in contact with the liquid, between the film and the glass Breakage of the glass inner chamber (3) which is continuously connected along the connection surface (27) by holding together the glass fragments (19) formed in the case, limiting their dispersal transparent and flexible safety film (5), 10 • the mentioned safety film (5) should be separated from the glass inner chamber (3) after breakage. by creating a temporary liquid retention volume (24) by preventing environmentally neck connection area (17) and / or base connection area which provides anchoring (18), • enabling the optical indication of the level of the liquid (10) inside the thermos, 15 created on and / or within the film thickness of the safety film (5), inside the glass arranged along the inner circumference of the container (3) and each one opens from the thermos mouth (9) and / or with at least one first inclined optical surface (21) that receives light from the reflective layer (7) at least one that redirects at least part of the received light back toward the mouth of the thermos (9) optical surface 20 consisting of micro-optical units including the second inclined optical surface (22) their formations (6), • the liquid surface inside the thermos (11) through optical surface formations (6) the ambient brightness band that can be observed from the thermos mouth (9) at the level where it is located (13), It is characterized by its inclusion. 25 2. A thermos (1) conforming to Claim 1, whose feature is; the aforementioned safety film (5), film and glass bonding to the inner surface of the glass inner chamber (3) along the connection surface (27) between them, together continuous by at least one of the molding, heat bonding and / or chemical bonding methods It includes a connecting surface (27) that enables it to be fixed.

3. A thermos (1) conforming to Claim 1, whose feature is that the mentioned safety film (5) is inside the glass 30 uninterrupted between the neck connection area (17) and the base connection area (18) of the reservoir (3) It contains a safety film (5) which allows it to lie flat. 14 4. A thermos (1) conforming to Claim 1, whose characteristic is that the mentioned safety film (5) is thermoplastic. polyurethane (TPU), polyurethane, silicone, elastomer, polyethylene terephthalate (PET), polycarbonate (PC), It must contain polypropylene (PP), polyethylene (PE), polyamide (PA), or at least one of these.

5. A thermos (1) conforming to Claim 1, whose characteristic is that the mentioned optical surface formations (6) are glass Micro-optical units (23) arranged circumferentially along the inner perimeter of the inner chamber (3) 5 It includes.

6. A thermos (1) conforming to claim 1 or claim 5, the characteristic of which is; the micro-optical units mentioned. (23), at least one first inclined optical surface arranged to receive ambient light (21) and to redirect at least some of the received light back towards the mouth of the thermos (9) It includes at least one second curved optical surface (22). 10 7. A thermos (1) conforming to claim 1 or claim 6, the characteristic of which is; the micro-optical mentioned. units (23), microprism, microlens, microgroove, microprotrusion, micropit or these It includes optical surface formations (6) formed from at least one of them.

8. A thermos (1) conforming to Claim 1, whose characteristic is that the aforementioned reflective layer (7) is metallic. coating, vacuum metallization, mirror coating or reflective film structure, at least one of which is 15 It includes.

9. A thermos (1) conforming to Claim 1, whose feature is; the mentioned safety film (5) and optical surface Security film that enables the formation of (6) of the formations together on a single piece structure (5) is included.

10. A thermos (1) conforming to Claim 1, whose characteristic is that the mentioned optical surface formations (6), 20 liquid without the use of any electronic sensors, power source or additional light source Its purpose is to provide an optical representation of the level.

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