KR20190080279A - Device for removing moisture for headlamp using latent heat storage material and method for removing moisture for headlamp using the same - Google Patents

Abstract

According to the present invention, disclosed are a device for preventing moisture of a headlamp using a latent heat storage material and a method for preventing moisture of the headlamp using the same. According to one embodiment of the present invention, the device for preventing moisture of the headlamp using a latent heat storage material comprises a case fixed to a bezel to accommodate the latent heat storage material, a gasket interposed between the bezel and the case, and a metal pin coupled to the case. The latent heat storage material absorbs heat generated from a vehicle and emits the heat upon a stop to prevent moisture from occurring in the lamp.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head lamp moisture prevention apparatus using a latent heat storage material,

The present invention relates to a head lamp moisture prevention device using a latent heat storage material, and more particularly, to a head lamp moisture prevention device using a latent heat storage material capable of preventing the generation of moisture on a head lamp lens surface using a latent heat storage material .

The automobile is provided with a head lamp so that the driver can observe the driving direction at night. The head lamp comprises a headlamp, a turn signal lamp, a fog lamp, and a reflector reflecting the light of the back light in a specific direction inside a transparent front cover and a back cover.

In order to secure a good watch, such a head lamp preferably keeps moisture and the like in a clean state without condensation on the lens, but moisture in the air can condense on the inner surface of the front cover due to a temperature difference between the inside and the outside. When moisture condenses on the front cover, the light of the head lamp is scattered by the condensed water on the front cover. Such a headlamp for a vehicle is designed so that the lens portion is exposed to the outside of the vehicle body, so that the inside and the outside of the vehicle are exposed to rain, mist, and the surrounding environment, and are designed to minimize various risk factors .

1 is a sectional view of a conventional head lamp structure.

Referring to FIG. 1, the structure of the headlamp includes a headlamp 130 located inside the vehicle, that is, a radiator grill, and a headlamp 150 located outside the vehicle. The headlamp 130 and the downlighter 150 And reflectors 140 and 160 are provided around the outer circumferential surfaces of the reflectors 140 and 160, respectively. A plurality of bezels 110 including a downwardly directed bezel 111 around the reflector 160 of the downward beam 150 are provided. Further, a transparent lens 120 is provided to embed and protect the components of the headlamp and to transmit light.

The reflector 140 and the reflector 160 emit light from the upward light 130 and the downward light 150. The upward and downward lights 130 and 150 are connected to a power source (not shown) And collects the light emitted from the lens 120 to the outside of the lens 120 efficiently. The plurality of bezels 110 cover component parts other than the upward light 130, the downward light 150 and the reflectors 140 and 160 so that they are not seen from the outside and the head lamp side is viewed from the outside of the lens 120 So that the appearance is made to look beautiful.

However, the structure of such a conventional head lamp has a problem that moisture is generated well. Moisture may be generated by natural condensation. However, in some cases, the area where the moisture is generated varies depending on the moisture content rate or the moisture absorption rate of the material inside the head lamp.

(Condensation) is generated in the low temperature portion (the portion at about 25 DEG C or less) due to the temperature difference between the portions adjacent to the upward lights 130 and the downward lights 150 and the portions not adjacent to the upward lights 130 and the downward lights 150. [ This is because the air heated at the side of the upward lights 130 and the downward lights 150 is convected in the headlamp and is condensed at the low temperature side where the temperature is low. Specifically, There is a problem that a large amount of moisture is generated.

In addition, although anti-fog coating is applied to prevent the moisture of the head lamp, it is difficult to observe the moisture caused by the moisture rather than the prevention of moisture generation, and coating cost is high.

In this way, the headlamp for a vehicle is required to properly remove moisture generated when rain or snow is taken to secure a sufficient nighttime running visibility at night. However, the conventional headlamp for a vehicle requires only a moisture removing structure such as a belt hole or a moisture absorbent, The generated moisture can not be completely removed.

2 is a graph showing a latent heat storage material.

Referring to FIG. 2, the latent heat storage material increases in temperature upon receipt of heat, changes its phase from solid to liquid without any change in temperature at a specific temperature (melting temperature), and absorbs a large amount of heat When the temperature is lowered as the liquid phase is changed, the phase is changed from liquid to solid at a specific temperature (melting temperature) and the heat is released.

Here, the heat that absorbs or releases while maintaining the same temperature at the time of the phase change is referred to as latent heat, and the latent heat has an energy storage and discharge capacity of several tens to several hundreds of times that of the sensible heat. The principle of the head lamp damping prevention device using such a latent heat storage material is that when the vehicle is driven, heat is transferred from the solid to the liquid due to the heat of the engine and heat generated by the lamp, and a lot of heat is stored. And a large amount of heat is released.

Referring to the table, it can be seen that the melting temperature and latent heat of the latent heat storage material are shown, and Na2S3O3 5H2O and NaCH3COO3H2O having a melting temperature of 40 캜 to 50 캜 are preferable considering the internal temperature of the head lamp.

Korean Patent Application No. 10-0737026

One embodiment of the present invention is a head lamp moisture prevention device using a latent heat storage material capable of preventing the generation of moisture on the surface of a head lamp lens by releasing heat stored using a latent heat storage material in order to overcome the problems of the prior art .

According to an aspect of the present invention, there is provided a battery pack comprising: a case fixed to a bezel to receive a latent heat storage material; A gasket interposed between the bezel and the case; and a metal pin coupled with the case. The latent heat storage material absorbs heat generated in the vehicle and discharges it at the time of stopping or starting off, thereby preventing moisture from being generated in the lamp can do.

The case may be of a shape that is bent many times so as to form an inner space with one side opened.

The inner space formed by the case and the bezel may be filled with a latent heat storage material.

When the latent heat storage material is heated, the latent heat can be stored by making a phase change from solid to liquid.

When the heating is stopped, the latent heat storage material is phase-changed from liquid to solid and heat can be released.

The case may have a structure in which through holes through which a plurality of protrusions formed on a metal pin are perforated are formed.

The through-holes may be of mutually spaced-apart structures.

The case may be located on the outboard of the headlamp.

The gasket may have a structure that is seated in the recessed groove of the bezel.

The case may have a structure in which engagement holes for screwing the bezel are perforated.

The metal pin may be in a plate-like shape.

The metal pin may have a plurality of protrusions for heat transfer.

The protrusions may be spaced apart from each other.

The ends of the projections may be located in a space formed by the bezel and the case.

The bezel may have a structure in which fastening holes for fastening the case and the screw are perforated.

The bezel, the gasket and the case may be screwed together.

According to another aspect of the present invention, there is provided a battery pack comprising: a case fixed to a bezel to receive a latent heat storage material; A gasket interposed between the bezel and the case, and a metal pin coupled with the bezel. The latent heat storage material absorbs heat generated in the vehicle and discharges the heat when the vehicle is stationary to prevent moisture from being generated in the lamp.

The bezel may have a structure in which the through holes through which protrusions formed on the metal pin are perforated.

According to another aspect of the present invention, there is provided a headlamp moisture prevention method comprising the steps of: (a) starting a vehicle running, (b) lighting a headlamp and operating an engine, (c) (D) stopping the vehicle and starting off, and (e) preventing and removing moisture from the lens surface of the headlamp.

Between the steps (c) and (d), (f) the step of phase-changing the latent heat storage material from solid to liquid may be included.

The step of phase-changing from solid to liquid may be carried out in the range of 40 ° C to 50 ° C.

In the step (f), the latent heat may be stored during the phase change.

Between the steps (d) and (e), (g) the step of phase-changing the latent heat storage material from liquid to solid may be included.

The step (g) may apply heat to the lens surface in a range of 5 minutes to 10 minutes.

The step of phase-changing from liquid to solid may be carried out in the range of 40 ° C to 50 ° C.

In the step (e), the temperature of the lens surface may be raised by a dew point temperature or more.

According to one embodiment of the present invention, a device for preventing head lamp damping using a latent heat storage material is a device for preventing moisture from accumulating in a moisture generating zone such as a lower surface of a lens surface, It is possible to prevent the occurrence of moisture and to provide an effect of removing moisture.

In addition, due to the heat storage ability of the latent heat storage material, the temperature inside the head lamp decreases, thereby decreasing the dew point temperature. When the dew point temperature is decreased, the possibility of moisture generation on the head lamp lens surface is also reduced.

In addition, since the latent heat storage material is operated as a heat storage and heat emission cycle due to a phase change during traveling and stopping, it can be used semi-permanently and thus it is advantageous that replacement and repair are unnecessary. A separate power source is unnecessary unlike the fan driving for increasing the number of the fans, so that the structure is simple and a compact structure is achieved and the cost can be reduced.

1 is a sectional view of a conventional head lamp structure.
2 is a graph showing a latent heat storage material.
FIG. 3 is a schematic view showing the overall configuration of a head lamp moisture prevention apparatus using a latent heat storage material according to an embodiment of the present invention.
4 is a schematic view showing a structure in which a head lamp moisture prevention device using a latent heat storage material according to an embodiment of the present invention is installed.
5 is a view showing an AA cross section in Fig.
6 is an enlarged view of a portion B in Fig.
7 is a schematic view illustrating a heat transfer and storage path of a head lamp moisture prevention apparatus using a latent heat storage material according to an embodiment of the present invention.
8 is a side view of a head lamp moisture prevention device using a latent heat storage material provided in a part of a bezel.
9 is a side view of a head lamp moisture prevention device using a latent heat storage material provided on the entire lower end of the bezel.
10 is a side view of a head lamp moisture prevention device using a latent heat storage material provided on the entire lower end of the bezel.
11 is a side view of a head lamp moisture prevention device using a latent heat storage material provided in a part of a bezel.
12 is a view illustrating a detailed structure of a head lamp moisture prevention device using a latent heat storage material according to an embodiment of the present invention.
13 is an exploded perspective view of a head lamp moisture prevention device using a latent heat storage material according to an embodiment of the present invention shown in FIG.
14 is a schematic view showing a heat conductive medium made of a metal material.
15 is a flowchart illustrating an operation sequence of a head lamp moisture prevention apparatus using a latent heat storage material according to an embodiment of the present invention.

The embodiments described below are provided so that those skilled in the art can easily understand the technical idea of the present invention, and thus the present invention is not limited thereto. In addition, the matters described in the attached drawings may be different from those actually implemented by the schematic drawings to easily describe the embodiments of the present invention.

It is to be understood that when an element is referred to as being connected or connected to another element, it may be directly connected or connected to the other element, but it should be understood that there may be other elements in between.

The term "connection" as used herein means a direct connection or indirect connection between one member and another member, and may refer to all physical connections such as adhesion, attachment, fastening, bonding, and bonding.

Also, the expressions such as 'first, second', etc. are used only to distinguish a plurality of configurations, and do not limit the order or other features between configurations.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. Means that a feature, number, step, operation, element, component, or combination of features described in the specification is meant to imply the presence of one or more other features, A step, an operation, an element, a component, or a combination thereof.

FIG. 3 is a schematic view showing the overall configuration of a head lamp moisture prevention apparatus using a latent heat storage material according to an embodiment of the present invention.

Referring to FIG. 3, an overall system configuration of a head lamp moisture prevention apparatus using a latent heat storage material according to an embodiment of the present invention is schematically shown. (B) equipped with a latent heat-dissipating material is installed on the lower surface of the lens surface and the inboard outboard to raise the temperature on the lens surface due to convection to remove moisture. As shown in the drawing, when the lamp is turned on, melting starts from the latent heat storage material of the lamp lighting part, and heat transfer and melting are caused to the side part through the metal thermal conductive medium as shown by the arrow.

FIG. 4 is a schematic view showing a structure in which a head lamp moisture prevention apparatus using a latent heat storage material according to an embodiment of the present invention is installed. FIG. 5 is a sectional view taken along the line AA in FIG. And FIG. 7 is a schematic view illustrating a heat transfer and storage path of the head lamp moisture prevention apparatus using the latent heat storage material according to one embodiment of the present invention.

Referring to FIGS. 4 to 7, the latent heat storage material moisture prevention device is located on the outboard of the head lamp. This is because the outer surface of the outboard portion is a main region in which moisture is generated due to a relatively low temperature, It is possible to prevent the occurrence of moisture.

The upper case 110 of the latent heat storage material moisture prevention device assembled with the bezel 140 and the upper case 110 and the bezel 140 are disposed between the bezel 140 and the bezel 140, A heat transfer medium made of a metal material for improving the heat transfer between the heat storage material 150 and the latent heat storage material 150 is located. The structure of the heat storage medium 150 will be described later in more detail.

According to the present invention, the bezel 140 and the upper case 110 of the latent heat storage material are coupled by bolts or thermal fusing, and a gasket 120 for preventing leakage of the latent heat storage material in a liquid state is inserted and joined to the joint. The structure of the latent heat storage material moisture prevention device will be described in detail below.

Referring to FIG. 7 again, heat transmission and storage paths are shown at the time of traveling of the vehicle. When engine heat and lamp lighting heat are transmitted to the existing bezel 140, the latent heat storage material 150 in contact with the bezel 140 When the temperature of the latent heat storage material 150 is increased and the temperature of the latent heat storage material 150 is in the range of 40 ° C. to 50 ° C., a phase change starts from a solid to a liquid, and a large amount of latent heat is stored.

When the starting of the vehicle is turned off, the heat is no longer transferred to the latent heat storage material moisture prevention device, so that when the temperature of the latent heat storage material 150 decreases to 40 to 50 ° C, A lot of heat (40 ~ 50 ℃) is emitted.

FIG. 8 is a side view of the head lamp dampproof device using a latent heat storage material provided in a part of the bezel, FIG. 9 is a side view of the head lamp dampproof device using a latent heat storage material provided on the entire lower end of the bezel, 11 is a side view of a head lamp moisture prevention device using a latent heat storage material disposed in a part of a bezel, and FIG. 12 is a side view of a head lamp moisture prevention device using a latent heat storage material, FIG. 13 is a cross-sectional view of a head lamp damping prevention device using a latent heat storage material according to an embodiment of the present invention. FIG. It is a perspective view.

8 to 13, the apparatus for preventing head lamp damping using the latent heat storage material according to the present invention is located on an outboard of a head lamp, and is fixed to the bezel 140 to receive the latent heat storage material 150 A case 110, a gasket 120 interposed between the bezel 140 and the case 110, and a metal pin 130 coupled to the case 110. The latent heat storage material 150 absorbs heat generated in the vehicle and emits heat at the time of stopping to prevent moisture from being generated in the lamp.

The case 110 is folded a plurality of times to be coupled with the bezel 140 to form an inner space in a shape that forms an inner space with one side opened, and the case 110 and the bezel 140 ) Is filled with the latent heat storage material 150. When the latent heat storage material 150 is heated, a phase change from solid to liquid is performed to store the latent heat. When the heating of the latent heat storage material 150 is stopped, the phase is changed from liquid to solid and heat is released.

The case 110 of the head lamp dampproofing apparatus according to the present invention is located on the outboard of the headlamp and through holes through which the protrusions formed on the plate-shaped metal pin 130 are passed through the case 110 And the through holes are spaced apart from each other.

The gasket 120 is seated in the indentation groove of the bezel 140. The case 110 is formed with an engagement hole to be screwed with the bezel 140, The bezel 140, the gasket 120, and the case 110 are screwed together so that the bezel 140 and the case 110 are screwed together.

The metal pins 130 are formed with protrusions for heat transfer. The protrusions are spaced apart from each other, and the ends of the protrusions are located in a space formed by the bezel 140 and the case 110.

The metal fins 130 are made of a metal such as aluminum as a heat conduction medium made of a metal. The heat conductive medium may be disposed in a direction in which heat is transferred and inserted into the case 110. Alternatively, the heat conductive medium may be inserted into the existing bezel 140 as in the following embodiments. The metal pin 130 having the above structure promotes the phase change by uniformly transferring the engine room and lamp lighting heat to the latent heat storage material.

Referring now to FIG. 11, there is shown a head lamp moisture prevention apparatus using a latent heat storage material according to another embodiment of the present invention.

As described above, the headlamp moisture prevention device using the latent heat storage material includes a case 110 fixed to the bezel 140 to receive the latent heat storage material 150, and a case 110 interposed between the bezel 140 and the case 110. [ And a metal pin 130 coupled to the case 110 to improve the heat transfer of the latent heat storage material 150.

The bezel 140 is formed with through holes through which protrusions formed in the metal pin 130 pass. 10 is a structure in which the metal pin 130 is coupled to the case 110. The apparatus for preventing head lamp moisture using the latent heat storage material of FIG. And the metal pin 130 is coupled to the metal plate 130. The overlapping description of the same structure will be omitted except the difference.

14 is a schematic view showing a heat conductive medium made of a metal material.

Referring to FIG. 14, the metal pin 130 is made of a metal such as aluminum, and may have various shapes such as a mesh structure, a honeycomb structure, and a metal powder. This is because the latent heat storage material itself has a low thermal conductivity to prevent the phase change of only the heat receiving part and to promote the phase change of the latent heat storage material as a whole.

15 is a flowchart illustrating a method for preventing head lamp moisture by using a head lamp moisture prevention apparatus using a latent heat storage material according to an embodiment of the present invention.

Referring to FIG. 15, a series of processes according to one embodiment of the headlamp moisture prevention method are shown, wherein (a) starts driving a vehicle, (b) turns on a headlamp, and operates an engine. When the head lamp is turned on and the engine is operated (c), the head lamp lighting heat and engine heat are transferred to the latent heat storage material. (D) When the vehicle's heat is transferred to the latent heat storage material while the vehicle is in operation, the vehicle stops and stops by stopping the vehicle.

Between the step (c) and the step (d), (f) the step of phase-changing the latent heat storage material from solid to liquid. Specifically, the step of phase-changing from the solid to the liquid is carried out in a temperature range of 40 ° C to 50 ° C, and latent heat is stored in the phase change. That is, when the phase change of the latent heat storage material is changed, the latent heat storage material due to the latent heat storage can store tens to hundreds of times more heat than the sensible heat (the heat increases without phase change) while maintaining a uniform temperature of 40 to 50 ° C . When the phase change is made, the temperature of the latent heat storage material also rises (sensible heat rise, 40 ° C to 50 ° C).

Subsequently, (d) the vehicle stop and start are turned off and stopped, and (e) moisture generation on the lens surface of the headlamp is prevented and eliminated. Between the steps (d) and (e), (g) the step of phase-changing the latent heat storage material from liquid to solid. In the step (g), heat is applied to the lens surface in a range of 5 minutes to 10 minutes, and the step of phase-changing from the liquid to solid is performed in a range of 40 ° C to 50 ° C. Here, in the step (e), the temperature of the lens surface rises above the dew point temperature.

Specifically, when the vehicle is stopped and the engine is turned off, the heat of the engine and the head lamp is not transmitted. Therefore, when the temperature of the latent heat storage material falls and the temperature of the heat storage material falls to 40 to 50 ° C, And the latent heat storage material releases heat to the outside while maintaining the temperature at 40 ° C to 50 ° C until the phase change is completed. At this time, heat emitted from the outside (such as the lower surface of the lens surface, the inboard surface, and the outboard surface) raises the temperature of the lens surface. Since the dew point temperature of the head lamp is generally 25 ° C to 30 ° C, Moisture is not generated on the surface and even if moisture is generated, the heat of 40 ° C to 50 ° C is continuously delivered for a predetermined period of time, so that it can be quickly removed. Therefore, when such a cycle is regarded as one cycle, it becomes possible to use semi-permanently in a continuous cycle.

Therefore, according to one embodiment of the present invention, a head lamp moisture prevention device using a latent heat storage material is a heat storage device that places a latent heat storage material in a moisture generating area such as a lower surface of a lens surface, It is possible to provide an effect of preventing the occurrence of moisture.

In addition, due to the heat storage ability of the latent heat storage material, the temperature inside the head lamp is reduced to reduce the possibility of generating moisture on the head lamp lens surface, and the latent heat storage material can be used semi-permanently, A heat ray sheet inside the head lamp, a heating film, and a fan for increasing the flow, a separate power source is unnecessary, so that the structure is simple, thereby achieving a compact structure and a cost reduction effect.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, it is to be understood that the above-described embodiments are merely illustrative of the most preferred embodiments of the present invention in order to facilitate understanding of the present invention, and the technical idea of the present invention is limited or limited only by the embodiments It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities, many of which are within the scope of the present invention. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted. It is also to be understood that the inventors have defined terms or words used in the present specification and claims based on the principle that the inventors can properly define the concept of the terms in order to explain their own invention in the best way, It should not be construed as meaning only. In addition, the order of the components described in the above-described process does not necessarily need to be performed in a time-series order, and if the order of operations of the respective components and steps is changed, the process may be included in the scope of the present invention. Of course it is.

110: Case 120: Gasket
130: metal pin 140: bezel
150: latent heat storage material

Claims (26)

A case fixed to the bezel to receive the latent heat storage material;
A gasket interposed between the bezel and the case; And
A metal pin coupled with the case;
/ RTI >
Wherein the latent heat storage material absorbs heat generated in a vehicle and discharges the heat during stopping or starting off to prevent moisture from being generated in the lamp. The method according to claim 1,
Wherein the case has a shape which is bent many times so as to form an inner space with one side thereof opened. 3. The method of claim 2,
Wherein the inner space formed by the case and the bezel is filled with a latent heat storage material. The method according to claim 1,
Wherein the latent heat storage material is phase-changed from a solid to a liquid upon heating to store latent heat. The method according to claim 1,
Wherein the latent heat storage material is phase-changed from a liquid to a solid when heating is stopped, and heat is released. The method according to claim 1,
Wherein a through hole is formed in the case so as to penetrate through the plurality of protrusions formed on the metal pin. The method according to claim 6,
Wherein the through holes are spaced apart from each other. The method according to claim 1,
Wherein the case is located on an outboard of the headlamp. The method according to claim 1,
Wherein the gasket is mounted on the recessed groove of the bezel. The method according to claim 1,
Wherein the case has holes formed therein for engaging with the bezel. The method according to claim 1,
Wherein the metal pin has a plate-like shape. The method according to claim 1,
And a plurality of protrusions for heat transfer are formed on the metal fins. 13. The method of claim 12,
Wherein the protrusions are spaced apart from each other. 13. The method of claim 12,
Wherein the ends of the projections are located in a space formed by the bezel and the case. The method according to claim 1,
Wherein the bezel is formed with fastening holes to be screwed into the case. The method according to claim 1,
Wherein the bezel, the gasket, and the case are screwed together. A case fixed to the bezel to receive the latent heat storage material;
A gasket interposed between the bezel and the case; And
A metal pin coupled with the bezel;
/ RTI >
Wherein the latent heat storage material absorbs heat generated in the vehicle and discharges the heat when the vehicle is stationary to prevent moisture from being generated in the lamp. 18. The method of claim 17,
Wherein the bezel has perforations through which protrusions formed on the metal fins penetrate. 17. A headlamp moisture prevention method according to any one of claims 1 to 16,
(a) starting a vehicle drive,
(b) head lamp lighting and engine operation phase,
(c) the head lamp lighting heat and the engine heat are transferred to the latent heat storage material,
(d) vehicle stop and start off steps, and
(e) preventing and removing moisture from the lens surface of the headlamp
Wherein the headlamp dampproofing method comprises: 20. The method of claim 19,
Between the step (c) and the step (d), (f) the step of phase-changing the latent heat storage material from a solid to a liquid. 21. The method of claim 20,
Wherein the step of phase-changing from the solid to the liquid takes place in a range of 40 ° C to 50 ° C. 21. The method of claim 20,
Wherein the step (f) includes storing latent heat during the phase change. 20. The method of claim 19,
Between the step (d) and the step (e), (g) a step of phase-changing the latent heat storage material from liquid to solid. 24. The method of claim 23,
Wherein the step (g) applies heat to the lens surface in a range of 5 minutes to 10 minutes. 24. The method of claim 23,
Wherein the step of phase-changing from the liquid to the solid is performed in a range of 40 ° C to 50 ° C. 20. The method of claim 19,
Wherein the step (e) is performed by raising the temperature of the lens surface above the dew point temperature.

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