TW201935123A - A filter holder having a demisting device - Google Patents

Abstract

A filter holder having a demisting device comprises a filter holder body, a front filter holding portion, a demisting device and a power supply device. The filter holder body has an inner surface and an outer surface. The filter holder body comprises a surrounding cavity part and an adapter. The surrounding cavity part comprises a surrounding pivot portion located at a rear end of the surrounding cavity part. The adapter comprises an adapter pivot portion and an adapter screw portion located respectively at a front end and a rear end of the adapter. The adapter pivot portion is used for pivoted with the surrounding pivot portion of the surrounding cavity part. The adapter screw portion is used for screwed with a lens screw portion of a camera lens of a camera. The camera lens has a front optical lens. The front filter holding portion comprises a left extension board, a right extension board, a left fixing part and a right fixing part. The left extension board and the right extension board are extended respectively from the left side and the right side of a front end of the surrounding cavity part. The left fixing part and the right fixing part are located on a front surface of the left extension board and a front surface of the right extension board respectively. The left fixing part and the right fixing part are used for fixing a front filter. A cavity is formed between the front filter, the inner surface of the filter holder body and the front optical lens. The demisting device is configured on the filter holder body between the outer surface of the filter holder body and the cavity. The power supply device is electrically connected with the demisting device.

Description

Filter holder with defogging device

The present invention relates to a filter holder with a defogging device, and more particularly to a filter holder with a temperature-controlled defogging device.

For photographers who like to shoot morning and dusk photography, night photography, or starry sky photography, fogging the lens is a common problem. Please refer to FIG. 10, which is a view showing a combination of a heating belt and a camera according to the conventional technology. A heating belt 93 is fixed to the front end of a lens 91 of a camera 90. The fixing method is to fix the heating belt 93 with devil felt on the inner and outer surfaces of the heating belt 93, respectively. The heating belt 93 is electrically connected to a power supply device 94. The power supply device 94 provides power to raise the temperature of the heating belt 93, thereby heating the front end of the lens 91 surrounded by the heating belt 93 to reach the lens 91. One of the front ends of the front optical lens 92 has a defogging effect. However, since the heating belt 93 is fixed to the outer surface of the front end of the lens 91, the heat is easily dissipated from the heating belt 93, causing excessive power consumption. In addition, since the front optical lens 92 of the front of the lens 91 is in contact with the outside air, heat needs to be conducted from the outer surface of the front of the lens 91 to the front optical lens 92 of the front of the lens 91. Its heating rate is too slow, resulting in too high a defogging rate. Slow, so often miss the opportunity to shoot.

In addition, the focusing ring of many lenses 91 is provided at the front end of the lens 91, that is, near the position where the heating belt 93 is fixed. After the heating belt 93 is fixed, it is not easy to manually use the focus ring. Or the focus ring has been fixed by manual focusing, but the heating belt 93 is fixed to the lens At the front end of the 91, it is easy to accidentally touch the focus ring and have to manually focus again.

Please refer to FIG. 11, which is a cross-sectional view of a combination of a heating belt, a camera, and a frame of the conventional technology. The main structure of the embodiment shown in FIG. 11 is substantially the same as that of the embodiment shown in FIG. 10, but it further includes a frame 95, a first front filter 96, and a second front filter. 97. The lens frame 95 is screwed to the lens 91. A cavity 98 is formed between the first front filter 96, the frame 95 and the front optical lens 92, and a gap 99 is formed between the frame 95 and the first front filter 96. The first front filter 96 and the second front filter 97 are respectively fixed on the frame 95. In order to avoid the excessive weight of the tripod when the camera 90 is disposed on a tripod (not shown), the lens frame 95 of the conventional technology is usually made of plastic material to reduce weight. The thermal conductivity of plastic materials is not as good as that of metal. Therefore, when the heating belt 93 is heated, the heat can be transmitted to the front optical lens 92 through the lens 91, but it is difficult to directly heat the first front filter 96. The heat cannot directly heat the air in the cavity 98, which makes the heating efficiency of the first front filter 96 too poor, and the function of defogging the first front filter 96 cannot be achieved, and the second front filter cannot be achieved. 97 defog function. In addition, if the heating belt 93 is to be fixed around the frame 95 (not shown), the heating belt 93 must be fixed around the first front filter 96 and the second front filter 97. Not only is it very difficult to fix, but each time the first front filter 96 or the second front filter 97 is individually adjusted, the heating belt 93 must be fixed again; after the heating belt 93 is fixed, it may be too protruding It obscures the range of the lens angle of view 991 in Fig. 11, which results in vignettes in the photos taken.

In view of this, the inventors have developed a simple assembly design that can avoid the above-mentioned disadvantages, is convenient to install, and has the advantages of low cost to take into account considerations such as use flexibility and economy, so the invention has been born.

The technical problem to be solved by the present invention is: how to directly and efficiently heat the optical lens before the lens, so that the heating rate is increased, the heat dissipation rate can be reduced, and the design is convenient to use.

In order to solve the foregoing problems and achieve the expected effect, the present invention provides a filter holder with a defogging device, which includes a frame body, a front filter holding portion, a defogging device, and a power supply device. The frame body has an inner surface and an outer surface, wherein the frame body includes: a surrounding cavity piece and an adapter piece. The surrounding cavity member includes a surrounding pivot joint located at the rear end of the surrounding cavity member. The adapter includes an adapter pivot portion and an adapter screw portion, which are respectively located at the front end and the rear end of the adapter, wherein the adapter pivot portion is provided for orbital pivot connection with the cavity member. The screw part of the adapter is for screwing with a lens screw part of a lens of a camera. The lens has a front optical lens. The inner surface of the frame body includes an inner surface surrounding the cavity part and An inner surface of the adapter, and an outer surface of the frame body includes an outer surface surrounding the cavity member and an outer surface of the adapter. The front filter holding portion includes a left extension plate and a right extension plate respectively extending from the left and right sides surrounding the front end of the cavity member, and one of the left extension plate and one of the right extension plate, respectively. A left fixing member and a right fixing member on the front surface are used to hold a front filter, wherein a cavity is formed between the front filter, the inner surface of the frame body and the front optical lens. . The defogging device is arranged on the frame body between the outer surface of the frame body and the cavity. The power supply device is electrically connected to the defogging device. Therefore, when the power supply device provides power to heat the defogging device, it directly heats the air in the cavity, so that the temperature of the cavity rises rapidly, so as to quickly achieve the defogging function, including the front optical lens and the front filter Mirror defogging, and can effectively reduce the heat dissipation rate.

In one embodiment, the aforementioned defogging device is disposed on the inner surface of the frame body. Has a groove inside.

In an embodiment, the aforementioned surrounding cavity part includes an engaging slot and an engaging box, and the surrounding cavity part has an engaging slot opening for the engaging box to be inserted into the engaging slot and fixed in the engaging slot. .

In one embodiment, the aforementioned defogging device is disposed on the engaging box or the engaging groove.

In an embodiment, the aforementioned engaging box has a rear filter fixing portion for a rear filter to be fixed on the engaging box.

In one embodiment, the aforementioned defogging device further includes a thermal sensor, and the power supply device further includes a temperature control section for temperature control of the defogging device.

In one embodiment, the aforementioned frame body further includes a heat-insulating layer formed on at least a part of the outer surface of the frame body.

In one embodiment, the aforementioned adapter further includes an anti-reflection layer, and the anti-reflection layer is formed on the inner surface of the adapter.

In one embodiment, the aforementioned adapter further includes an anti-reflective heat insulation layer, and the anti-reflective heat insulation layer is formed on the inner surface of the adapter.

In an embodiment, the aforementioned surrounding cavity member further includes a buffer layer formed on the outer surface of the front end of the surrounding cavity member to fill the outer surface of the front end of the surrounding cavity member and the front filter One of the gaps.

In order to further understand the present invention, the preferred embodiments will be described in detail below with reference to the drawings and figures, and the specific constitutional content of the present invention and its achieved effects will be described in detail as follows.

1‧‧‧ filter holder

10‧‧‧ Cavity

11‧‧‧ clearance

2‧‧‧ Frame body

20‧‧‧ the inner surface of the frame body

21‧‧‧ Outside surface of frame body

22‧‧‧ groove

23‧‧‧ Insulation

3‧‧‧ Surround cavity piece

30‧‧‧ around the inner surface of the cavity piece

31‧‧‧ surrounds the outer surface of the cavity

32‧‧‧Circular pivot

320‧‧‧ fixed groove

321‧‧‧Fixed button

33,33’‧‧‧ engagement groove

330,330’‧‧‧‧First Adhering Department

34‧‧‧Snap Box

340‧‧‧Grip

341‧‧‧Second Adhesion Department

342‧‧‧Toggle

343‧‧‧Rotating mechanism

344‧‧‧Snap cover

35,35’‧‧‧ engagement slot opening

36‧‧‧ rear filter mount

37‧‧‧ rear filter

370‧‧‧Fixed section

38‧‧‧ buffer layer

4‧‧‧ adapter

40‧‧‧Inner surface of adapter

41‧‧‧ Outside surface of adapter

42‧‧‧ Adapter Pivot

43‧‧‧ Adapter screw connection

44‧‧‧Anti-reflective layer

45‧‧‧Anti-reflective insulation

5‧‧‧ front filter holder

50‧‧‧Left Extension Board

51‧‧‧Right Extension Board

52‧‧‧ Front surface of left extension plate

53‧‧‧ front surface of right extension plate

54‧‧‧Left fixture

55‧‧‧Right fixing

56‧‧‧first front filter

57‧‧‧Second front filter

58‧‧‧screw

6‧‧‧ defogging device

60‧‧‧thermal sensor

7‧‧‧ Power Supply

70‧‧‧Temperature Control Department

8‧‧‧ Camera

80‧‧‧ lens

81‧‧‧ lens screw

82‧‧‧ front optical lens

90‧‧‧ Camera

91‧‧‧ lens

92‧‧‧ front optical lens

93‧‧‧heating belt

94‧‧‧ Power Supply

95‧‧‧ Frame

96‧‧‧first front filter

97‧‧‧Second front filter

98‧‧‧ Cavity

99‧‧‧ clearance

991‧‧‧ perspective

FIG. 1A is a specific embodiment of a filter holder with a defogging device according to the present invention.

FIG. 1B is a cross-sectional view of the embodiment of FIG. 1A and the camera combination.

Fig. 1C is an enlarged partial sectional view of X in Fig. 1A.

Figure 1D is another specific embodiment of Figure 1C.

FIG. 1E is another specific embodiment of FIG. 1C.

FIG. 2A is another specific embodiment of a filter holder with a defogging device according to the present invention.

FIG. 2B is a specific embodiment of an engaging cover of a filter holder with a defogging device according to the present invention.

FIG. 3 is a specific embodiment of an engagement box of a filter holder with a defogging device according to the present invention.

FIG. 4 is another embodiment of the engagement box of the filter holder with a defogging device according to the present invention.

FIG. 5 is an enlarged partial cross-sectional view of another embodiment of a clip box with a filter holder having a defogging device according to the present invention.

FIG. 6 is a specific embodiment of a surrounding cavity member and a front filter holding portion of a filter holder with a defogging device according to the present invention.

FIG. 7 is a specific embodiment of an adapter of a filter holder with a defogging device according to the present invention.

FIG. 8 is another embodiment of a surrounding cavity member and a front filter holding portion of a filter holder with a defogging device according to the present invention.

FIG. 9A is another embodiment of the present invention with a defogging device and a camera combination Sectional view.

Figure 9B is a front view of Figure 9A.

FIG. 10 is a combination diagram of a heating belt and a camera of the conventional technology.

FIG. 11 is a cross-sectional view of a combination of a heating belt, a camera, and a frame of the conventional technology.

Please refer to FIG. 1A, which is a specific embodiment of a filter holder with a defogging device according to the present invention. A filter frame 1 having a defogging device according to the present invention includes a frame body 2, a front filter holding portion 5, a defogging device 6, and a power supply device 7. The frame body 2 has an inner surface 20 and an outer surface 21. The frame body 2 includes a surrounding cavity member 3 and an adapter member 4. The inner surface 20 of the frame body 2 includes an inner surface 30 surrounding the cavity member 3 and an inner surface 40 of the adapter 4. The outer surface 21 of the frame body 2 includes an outer surface 31 surrounding the cavity member 3 and an outer surface 41 of the adapter 4. The surrounding cavity member 3 includes a surrounding pivoting portion 32 located at the rear end of the surrounding cavity member 3. The adaptor 4 includes an adaptor pivoting portion 42 and an adaptor screwing portion 43, which are respectively located at the front end and the rear end of the adaptor 4. The surrounding pivoting portion 32 surrounding the cavity member 3 is provided for pivotal connection with the pivoting portion 42 of the adapter. In this embodiment, the surrounding pivoting portion 32 includes a fixing groove 320 and a pair of fixing buttons 321. The adapter pivoting portion 42 can be inserted into the fixing groove 320 surrounding the pivoting portion 32. The pair of fixing buttons 321 surrounding the pivoting portion 32 fixes the adapter pivoting portion 42. The front filter holding portion 5 includes a left extension plate 50 and a right extension plate 51 respectively extending from the left and right sides surrounding the front end of the cavity member 3, and is located on a front surface 52 of the left extension plate 50, respectively. And a left fixing member 54 and a right fixing member 55 on a front surface 53 of the right extension plate 51. The left fixing member 54 and the right fixing member 55 are respectively fixed to the left extension plate 50 and the right extension plate 51 with a plurality of screws 58. Please also refer to FIG. 1B, which is a cross-sectional view of the embodiment and the camera combination of FIG. 1A. One camera 8 one lens 80 It has a lens screwing portion 81 and a front optical lens 82. The adapter screwing portion 43 of the adapter 4 is for screwing with the lens screwing portion 81 of the lens 80. The adapter 4 can be selected with the size of the lens screwing portion 81 of the lens 80. Cooperate with the lens screwing portions 81 of the lenses 80 of different sizes, and purchase the adapter screwing portions 43 of the adapters 4 of different sizes. The left fixing member 54 and the right fixing member 55 are used for clamping a first front filter 56 and a second front filter 57. A cavity 10 is formed between the first front filter 56, the inner surface 20 of the frame body 2 (including the inner surface 30 surrounding the cavity member 3 and the inner surface 40 of the adapter 4), and the front optical lens 82. Please also refer to FIG. 1C, which is an enlarged partial cross-sectional view of X in FIG. 1A. In this embodiment, the defogging device 6 is disposed on the inner surface 30 surrounding the cavity member 3. The power supply device 7 is electrically connected to the defogging device 6 to provide power to heat the defogging device 6. Since the defogging device 6 is disposed on the inner surface 30 surrounding the cavity member 3, when the power supply device 7 provides power to heat the defogging device 6, the air in the cavity 10 and the frame body 2 are directly heated. , So that the temperature of the cavity 10 is increased very quickly to quickly achieve the defogging function. The front optical lens 82 and the first front filter 56 can be defogged at the same time, and the heat dissipation rate can be effectively reduced. The second front filter 57 is defogged.

Please refer to FIG. 1D, which is another specific embodiment of FIG. 1C. In this embodiment, the inner surface 20 of the frame body 2 has a groove 22. The defogging device 6 is disposed in the groove 22 of the inner surface 20 of the frame body 2. Please refer to FIG. 1E, which is another specific embodiment of FIG. 1C. In this embodiment, the defogging device 6 is disposed on the frame body 2 between the outer surface 21 of the frame body 2 and the inner surface 20 of the frame body 2. 1C, 1D, and 1E are preferred embodiments of the present invention, in which the defogging device 6 is disposed on the frame body 2 between the outer surface 21 of the frame body 2 and the cavity 10 (Including the inner surface 20 of the frame body 2 but excluding the outer surface 21 of the frame body 2). In another embodiment (not shown in the figure), the defogging device 6 may be disposed on the outer surface 21 of the frame body 2. However, if the defogging device 6 is disposed on the outer surface 21 of the frame body 2, The heat dissipation is more serious, the power consumption is larger, and the defogging rate is lower than that of the embodiments of FIG. 1C, FIG. 1D, and FIG. 1E.

Please refer to FIG. 2A, which is another specific embodiment of a filter holder with a defogging device according to the present invention. The main structure of the embodiment shown in FIG. 2A is substantially the same as that of the embodiment shown in FIG. 1A, except that the surrounding cavity member 3 includes an engagement groove 33 and an engagement box 34. The surrounding cavity part 3 has an engaging groove opening 35 for the engaging box 34 to be inserted into the engaging groove 33 and fixed in the engaging groove 33. A first sealing portion 330 is provided around the cavity member 3 near the opening 35 of the engaging groove. The engaging box 34 has a holding portion 340 and a second close portion 341. The holding portion 340 is convenient for a user to hold the engaging box 34. Wherein, the first close-contact portion 330 and the second close-contact portion 341 are designed to closely fit, so that the engagement box 34 is inserted into the engagement groove 33 from the engagement groove opening 35 and fixed in the engagement groove 33. The slot opening 35 is tightly closed to avoid the problem of light leaking into the lens 80 and to avoid the reflected image of the lens 80 from appearing in the photograph. In this embodiment, the defogging device 6 is disposed on the engaging box 34 on the inner surface 20 of the frame body 2 (on the inner surface 30 surrounding the cavity member 3). Please also refer to FIG. 2B, which is a specific embodiment of an engaging cover of a filter holder with a defogging device according to the present invention. The engaging cover 344 has a structure substantially the same as that of the upper half of the engaging box 34 in FIG. 2A, but the engaging cover 344 is not provided with a defogging device 6. The function of the engaging cover 344 is that when the defogging function is not required in the embodiment of FIG. 2A, the engaging box 34 can be removed, and the engaging cover 344 is fixed on the opening 35 of the engaging groove to make the card The groove opening 35 is tightly closed. In another embodiment (not shown), the defogging device 6 may be disposed on the engaging groove 33 and located on the inner surface 20 of the frame body 2 (on the inner surface 30 surrounding the cavity member 3).

Please refer to FIG. 3, which is a specific embodiment of an engagement box of a filter holder with a defogging device according to the present invention. The main structure of the embodiment shown in Fig. 3 is the same as that shown in Fig. 2A. The structure of the engaging box 34 in the embodiment is substantially the same, except that the engaging box 34 further includes a rear filter fixing portion 36. The rear filter fixing portion 36 is pivotably connected to a fixing portion 370 of a rear filter 37 to fix the rear filter 37 on the engaging box 34. In another embodiment (not shown), the engaging box 34 is not provided with a defogging device 6, and the defogging device 6 is disposed at other positions, for example, the inner surface 20 of the frame body 2 in other parts. At this time, the snap box 34 can be used simply as a drop-in filter box. When the filter function of the engaging box 34 is not used, the engaging box 34 can be removed, and the engaging cover 344 shown in FIG. 2B can be fixed on the engaging slot opening 35 to make the engaging slot opening 35 dense. Together.

Please refer to FIG. 4, which is another specific embodiment of an engagement box of a filter holder with a defogging device according to the present invention. The main structure of the embodiment shown in FIG. 4 is substantially the same as that of the embodiment shown in FIG. 3, except that the engaging box 34 further includes a toggle portion 342 and a rotating mechanism 343. The rotating mechanism 343 can rotate the rear filter fixing portion 36 relative to the engaging box 34, thereby enabling the filter 37 to rotate relative to the engaging box 34 after being fixed on the rear filter fixing portion 36. The user can rotate the rear filter 37 relative to the engaging box 34 by turning the dial 342. After this embodiment, the filter 37 is suitable for using a circular polarizing filter. When the user rotates the rear filter 37 after the circular polarizing filter, it will not affect the first front filter 56 and the second front that have been adjusted and fixed. Filter 57.

Please refer to FIG. 5, which is an enlarged partial cross-sectional view of another embodiment of an engagement box of a filter holder with a defogging device according to the present invention. The main structure of the embodiment shown in FIG. 5 is substantially the same as the structure of the engagement box 34 of the embodiment shown in FIG. 2A, except that the defogging device 6 further includes a thermal sensor 60, and the power supply device 7 further includes a temperature control section 70. The temperature is sensed by the thermal sensor 60 and the temperature of the defogging device 6 is controlled by the temperature control unit 70 to avoid excessive heating and damage to the lens. In all other embodiments of the present invention, the defogging device 6 may include a thermal sensor 60, and the power supply device 7 may include a temperature control unit 70.

Please refer to FIG. 6, which is a specific embodiment of a surrounding cavity member and a front filter holding portion of a filter holder with a defogging device according to the present invention. The main structure of the embodiment shown in FIG. 6 is substantially the same as that of the embodiment shown in FIG. 2A, except that the surrounding cavity member 3 further includes an engaging groove 33 ', and the surrounding cavity member 3 further has An engagement slot opening 35 'is provided, and a first close portion 330' is provided around the cavity member 3 near the engagement slot opening 35 '. The embodiment of FIG. 6 may provide two engaging cassettes 34 (not shown) respectively fixed in the engaging groove 33 and the engaging groove 33 '. The two snap boxes 34 can be combined in a variety of possibilities. For example, one of the engaging boxes 34 is provided with a rear filter 37 and the defogging device 6 at the same time, and the other engaging box 34 is provided with only one rear filter 37 and the defogging device 6 is not provided; or one of them Only one defogging device 6 is provided on one engaging box 34, and only one rear filter 37 is not provided on the other engaging box 34, and the defogging device 6 is not provided; On the inner surface 20 of the main body 2, each of the two engaging boxes 34 has a rear filter 37 but no defogging device 6 is provided. A snap-in box 34 (where a rear filter 37, a defogging device 6, or a rear filter 37 and a defogging device 6 can be installed on the snap-in box 34) and a second FIG. 2B can also be fixed. The engaging cover 344 (not shown in the figure); or two engaging covers 344 (not shown in the figure) shown in FIG. 2B are fixed at the same time, and the defogging device 6 is provided in the frame body 2 of other parts内 表面 20。 On the inner surface 20.

Please refer to FIG. 7, which is a specific embodiment of an adapter of a filter holder with a defogging device according to the present invention. The main structure of the embodiment shown in FIG. 7 is substantially the same as that of the adapter 4 of the embodiment shown in FIG. 1A, except that the defogging device 6 is disposed on the inner surface 40 of the adapter 4 . The power supply device 7 is electrically connected to the defogging device 6 disposed on the inner surface 40 of the adapter 4.

Please refer to FIG. 8, which is another specific embodiment of a surrounding cavity member and a front filter holding portion of a filter holder with a defogging device according to the present invention. The main features of the embodiment shown in FIG. 8 The structure is substantially the same as that of the embodiment shown in FIG. 2A, except that the defogging device 6 is disposed on the inner surface 30 surrounding the cavity member 3. At this time, the engaging box 34 can be used simply as a drop-in filter box. When the filter function of the engaging box 34 is not used, the engaging box 34 can be removed, and the engaging cover 344 shown in FIG. 2B can be fixed on the engaging slot opening 35 to make the engaging slot opening 35 dense. Together.

See Figures 1A and 1B. There is a gap 11 between the outer surface 31 surrounding the front end of the cavity member 3 and the first front filter 56. When the power supply device 7 provides power to heat the defogging device 6, the air in the cavity 10 is directly heated When the air is heated, it will expand and flow out from the gap 11 to dissipate the heat at the same time. Please refer to FIG. 9A, which is a cross-sectional view of a combination of a specific embodiment with a defogging device and a camera according to the present invention. Please also refer to FIG. 9B, which is a front view of FIG. 9A when the first front filter 56 and the second front filter 57 are not provided. The main structure of the embodiment shown in FIG. 9A is substantially the same as that of the embodiment shown in FIG. 2A, except that the surrounding cavity member 3 further includes a buffer layer 38, a heat insulation layer 23, and an anti-reflection Layer 44. The buffer layer 38 is formed on the outer surface 31 of the front end of the surrounding cavity member 3 to fill the gap 11 between the outer surface 31 of the front end of the surrounding cavity member 3 and the first front filter 56. Thereby, the cavity 10 is more closed and closed, and the heat dissipation is further reduced, so that the power of the power supply device 7 is saved, and at the same time, the rate of defogging is faster. In addition, in this embodiment, the heat insulation layer 23 is formed on the outer surface 31 of the surrounding cavity member 3, thereby reducing heat dissipation and saving the power of the power supply device 7. In another embodiment (not shown in the figure), the heat insulation layer 23 may also be formed on the outer surface 41 of the adapter 4. In addition, in this embodiment, the anti-reflection layer 44 is formed on the inner surface 40 of the adapter 4, thereby reducing light reflection on the inner surface 40 of the adapter 4 to avoid affecting the imaging quality. In another embodiment, an anti-reflection thermal insulation layer 45 can be formed on the outer surface 41 of the adapter 4 to achieve the effects of reducing light reflection and reducing heat dissipation on the inner surface 40 of the adapter 4 at the same time. In yet another embodiment (not shown in the figure), a surface is formed on the outer surface 41 of the adapter 4 before The heat insulation layer 23 and an anti-reflection layer 44 are formed to achieve the effects of reducing light reflection and reducing heat dissipation of the inner surface 40 of the adapter 4 at the same time.

The above are the specific embodiments of the present invention and the technical means used. According to the disclosure or teaching of this article, many changes and modifications can be derived, which can still be regarded as the equivalent changes made by the concept of the present invention. The functions that have not exceeded the essential spirit covered by the description and drawings should be regarded as within the technical scope of the present invention, and should be considered together.

In summary, according to the content disclosed above, the present invention can indeed achieve the intended purpose of the invention, and provide a filter holder with a defogging device, which has a high value for industrial use, and filed an invention patent application according to law.

Claims (10)

A filter frame with a defogging device includes: a frame body having an inner surface and an outer surface, wherein the frame body includes: a surrounding cavity member, including a surrounding pivot joint, located on the surrounding The rear end of the cavity piece; and an adapter piece, including an adapter piece pivoting portion and an adapter piece screwing portion, respectively located at the front end and the rear end of the adapter piece, wherein the adapter piece pivoting portion It is for pivotal connection with the orbiting pivoting part of the surrounding cavity part, and the screwing part of the adapter is for screwing with a lens screwing part of a lens of a camera, the lens has a front optical lens, the The inner surface of the frame body includes an inner surface of the surrounding cavity member and an inner surface of the adapter. The outer surface of the frame body includes an outer surface of the surrounding cavity member and the adapter. An outer surface; a front filter holding portion including a left extension plate and a right extension plate respectively extending from left and right sides of the front end of the surrounding cavity member, and one of the left extension plate respectively One on the front surface and one on the front surface of the right extension plate Pieces and a right fixing piece, the left fixing piece and the right fixing piece are used for clamping a front filter, wherein a cavity is formed between the front filter, the inner surface of the frame body and the front optical lens; A defogging device is disposed on the frame body between the outer surface of the frame body and the cavity; and a power supply device is electrically connected to the defogging device. The filter holder with a defogging device according to item 1 of the scope of the patent application, wherein the defogging device is disposed in a groove provided on the inner surface of the frame body. The filter holder with a defogging device according to item 1 of the scope of the patent application, wherein the surrounding cavity member includes an engaging slot and an engaging box, and the surrounding cavity member has an engaging slot opening for the The engaging box is inserted into the engaging groove and fixed in the engaging groove. The filter holder with a defogging device as described in item 3 of the scope of patent application, wherein the defogging device is disposed on the engaging box or the engaging groove. The filter holder with a defogging device described in item 3 of the scope of the patent application, wherein the engaging box has a rear filter fixing portion for a rear filter to be fixed on the engaging box. The filter holder with a defogging device according to item 1 of the scope of the patent application, wherein the defogging device further includes a thermal sensor, and the power supply device further includes a temperature control section for performing the defogging device. Temperature control. The filter frame with a defogging device according to item 1 of the scope of the patent application, wherein the frame body further includes a heat insulation layer formed on at least a part of the outer surface of the frame body . The filter holder with a defogging device described in item 1 of the scope of the patent application, wherein the adapter further includes an anti-reflection layer, and the anti-reflection layer is formed on the inner surface of the adapter. The filter holder with a defogging device according to item 1 of the scope of the patent application, wherein the adapter further includes an anti-reflective heat insulation layer, and the anti-reflective heat insulation layer is formed on the inner surface of the adapter on. The filter holder with a defogging device according to item 1 of the scope of the patent application, wherein the surrounding cavity member further includes a buffer layer formed on the outer surface of the front end of the surrounding cavity member, To fill a gap between the outer surface of the front end of the surrounding cavity member and the front filter.