WO2010108309A1 - Floodlight reflector and forming method thereof - Google Patents

Abstract

A floodlight reflector includes a cup bottom and a cup body whose inner wall is formed by a reflecting wall which expands outwards gradually from the edge of the cup bottom. The construction of the reflecting wall is: defining each major parabola y²＝2p_mx, and obtaining the major parabolic curve surface corresponding to the reflecting wall by stretching one branch of the major parabola around the direction parallel to the surface of the perpendicular rotating axis through the center of the lamp hole or rotating around the rotating axis. A plurality of reflecting concave surface layers are arranged on the reflecting wall, and each reflecting concave surface layer includes a plurality of reflecting concave surfaces which are proximate with each other and have the same shape. Each reflecting concave surface has the construction formed by the following steps: defining a minor parabola y²＝2p_msx corresponding to each reflecting concave surface layer of each reflecting wall, forming one reflecting concave surface by rotating the minor parabola around the rotating axis through the peak of the minor parabola, and forming a layer of the reflecting concave surface layer by arraying horizontally the reflecting concave surfaces abutted against each other, with the adjacent reflecting concave surface layers abutted against each other.

Description

 Floodlight reflector and method of forming the same

The invention belongs to a lighting article, in particular to a reflector for flooding illumination in a lamp and a forming method thereof. BACKGROUND OF THE INVENTION At present, a reflector having a flooding effect is subjected to sandblasting or unevenness treatment on an inner surface thereof, and when a light source is incident on a reflective surface to be processed, light is diffusely reflected to realize floodlight illumination. Such a reflector has the defects of large loss of optical energy, low reflection light effect, uncontrollable direction of the reflected light, and low utilization of the light source. SUMMARY OF THE INVENTION The present invention is directed to solving the deficiencies of the conventional flood reflectors, and provides a flood reflector having a controllable light and a high utilization rate of a light source, and a method of forming the flood reflector. In order to achieve the above object, the present invention adopts the following scheme: A flood reflector comprising a cup bottom and a cup body, wherein the cup bottom is provided with a lamp hole for allowing a light source to protrude from the lamp hole into the flood reflector The inner wall of the cup body is surrounded by at least one reflective wall that gradually abuts from the edge of the bottom of the cup, and an opening is formed in the upper portion of the cup body for emitting light emitted by the light source; each of the reflective walls has the following structure: First define each main parabola corresponding to each reflective wall = 2 _Pm where the subscript m is a variable, indicating a different reflective wall, such as = 2; ^ represents the main parabola forming the first reflective wall, y ² = 2 _P2 indicates formation The main parabola of the first reflecting wall, and so on, the maximum value of m is the number of reflecting walls determined according to the demand. Here, the main parabola y ² = 2 _Pm may have different coordinate systems, such as each coordinate system. The vertical axis is selected as the vertical axis of rotation passing through the center of the lamp hole, and the origin is selected at different positions of the axis of rotation; one of the main parabola is slanted parallel to the center of the lamp hole Stretching the direction of the plane of the straight axis of rotation or rotating around the vertical axis of rotation to obtain a main parabolic surface corresponding to the reflecting wall, and cutting all the main parabolic surfaces to obtain corresponding reflecting walls, since the upper edges of the reflecting walls will Forming a part of the opening, if it is desired that the portion is linear, it is necessary to stretch one of the main parabola corresponding thereto along a plane parallel to the vertical axis of rotation of the center of the light hole, if it is desired to be curved, Then, it needs to be rotated around the vertical rotation axis, and the obtained main parabolic surface is cut to obtain a corresponding reflection wall; each reflective wall is provided with a reflective curved surface formed by a plurality of reflective concave layers, each reflective concave layer Each includes a plurality of reflective concave surfaces having the same shape in close proximity to each other, and any one of the reflective concave surfaces has the following structure: defining a secondary parabola corresponding to each reflective concave layer of each reflective wall = 2 _Pms , subscript S is a variable, indicating a different reflective concave layer, such as = 2 _Α ^ represents the first reflective concave layer forming the first reflective wall Parabola, = 2ρ^ represents the secondary parabola of the second reflective concave layer forming the second reflective wall, and so on, where the coordinate system of the secondary parabola = 2 _Ρη ^ is also different; the apex of the secondary parabola is located corresponding thereto On the reflective wall, the focus is located inside the reflective wall, and the secondary parabola rotates around the axis of rotation of the parabola to form a reflective concave surface. The reflective concave surface is formed by a horizontal array adjacent to each other to form a reflective concave layer, adjacent reflective concave surface. The layers are adjacent to each other. Preferably, the reflective concave layer on each reflective wall, the reflective concave surfaces on the adjacent layer are alternately connected to each other to form a reflective curved surface, and a reflective concave surface on a reflective concave surface extends into the adjacent two reflective concave surfaces of the adjacent layer. Between, and adjacent to each other.

Preferably, the secondary parabola y ² = 2 _Pms is equally spaced in the direction of the vertical axis of rotation of the center of the light hole for the vertices of the respective parabola having the same m value and different s values.

Preferably, all of the reflective walls have the same number of reflective concave layers and correspond one-to-one; The secondary parabola = 2 _Pm ^, and the vertices of the respective parabolas of the same s are located on the same horizontal plane.

 Preferably, the reflective wall encloses a non-circular opening in the upper portion of the cup.

Preferably, the secondary parabola = 2 _{Pms is} set such that the light emitted by the light source is reflected by one time to exit the opening.

 Preferably, the inner wall of the cup is mirror finished.

 The method of forming a flood reflector includes the following steps:

(1) First determining the desired shape of the opening, the upper edge of each reflecting wall forming a straight side or an arc of the opening; thereby determining the number of reflecting walls according to the shape of the opening, and selecting a corresponding one of the reflecting walls Main parabola = 2 _Pm ;c _;

 (2) One of the main parabola corresponding to the straight edge is stretched in a direction parallel to the plane of the vertical axis of rotation of the center of the light hole to obtain a main parabolic surface corresponding to the respective reflective wall; corresponding to the main parabola of the arc segment One of the main parabolic curved surfaces corresponding to the respective reflecting walls is rotated about the vertical rotating axis; and finally the main parabolic curved surface corresponding to each reflecting wall is obtained;

(3) dividing the main parabolic surface corresponding to each reflective wall in the direction of the vertical rotation axis, each of the division points being at the position of the vertex of the secondary parabola forming a reflective concave surface, the parabola bypassing the rotation of its vertex After the shaft rotates, a reflective concave surface on each layer is formed on the main parabolic curved surface corresponding to each reflective wall, and the reflective concave surfaces of each layer are adjacent to each other to form a reflective concave layer, and adjacent reflective concave layers are mutually connected. Adjacent; respectively, each main parabolic curved surface formed with the reflective concave layer is cut according to the required opening length and the angle occupied on the circumference of the flood reflector, and each reflective wall is obtained, and the reflective walls are spliced to each other. That is, forming a reflective reflector of a desired shape; or cutting the main parabolic surface corresponding to each reflective wall and then forming each Reflective concave layer.

 Preferably, in step (3), each main parabolic surface is equally divided before or after cutting, and the reflective concave surface of each layer is selected such that the reflective concave surfaces of the array are interlaced with each other. Adjacent, a reflective concave surface on a reflective concave layer extends between two adjacent reflective concave surfaces of the adjacent layer and is adjacent to each other; the secondary parabola is selected such that the reflective concave layer of the odd layer and the reflective concave layer of the even layer The reflective concavities are aligned with one another in their respective columns.

 Preferably, each of the main parabolic surfaces has the same number of division points, and the positions of the divisions are the same, so that the vertices of the reflective concave surfaces on the same layer of all the reflection walls are on the same horizontal plane.

 The beneficial effects of the present invention are as follows: The flood reflector of the present invention has a plurality of reflective concave layers on each of the reflective walls, since the reflective concave surface and the reflective wall are rotated or stretched by a parabola having a specific shape. And each reflective concave layer is formed by the same reflective concave surface through the array, so each reflective concave layer has the same characteristics, so the reflected light has controllability. Since the reflective concave surfaces of the respective layers are adjacent to each other, the floodlight reflector according to the present invention is characterized in that the light energy loss is small and the light reflection efficiency is high. In addition, a plurality of reflective walls can be spliced into various shapes of the inner wall of the cup to form openings of different shapes. Therefore, different openings can be designed according to different applications, so that the emitted light can be most effectively applied.

DRAWINGS

 1 is a schematic view showing the overall structure of a flood reflector according to the present invention;

 2 is a schematic view showing the principle of forming a first reflective wall;

 3 is a schematic structural view of a main parabolic curved surface forming a first reflective wall;

 Figure 4 is a schematic view showing the structure of a flood reflector according to the present invention;

Figure 5 is a schematic structural view of another flood reflector according to the present invention; Figure 6 is a schematic view of the reflected light of the first reflective wall in the flood reflector.

detailed description

 The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

 A flood reflector, as shown in Fig. 1, includes a cup bottom BM and a cup BO, wherein the cup bottom BM is provided with a lamp hole for allowing the light source SO to protrude from the lamp hole into the flood reflector. The inner wall of the cup body is surrounded by at least one reflecting wall which gradually abuts from the edge of the bottom BM of the cup, and an opening is formed in the upper portion of the cup B0 for emitting light from the light source SO.

Since the circular flood reflector structure is relatively simple, the inner wall of the cup body can be formed by a reflective wall, that is, formed by a main parabola rotating 360° around the vertical rotation axis of the center of the lamp hole. Therefore, the embodiment is described. Non-circular flood reflectors are dominant. The formation process of the first reflective wall will now be described with reference to Fig. 2, and the formation process of the other reflective walls is the same. First, one of the main parabola = 2; ^ is stretched along the plane of the vertical rotation axis 1A passing through the center of the lamp hole to obtain a main parabolic surface corresponding to the first reflection wall as shown in FIG. The focus 1P of the parabola = 2; ^ can be selected at the position where the light source SO is located, and the height of the first reflective wall is determined according to the illuminated area Klf as shown in FIG. 6 and the distance H of the open distance from the illuminated surface, first Kl of the distance from the upper edge of the reflecting wall to the rotating shaft 1A. As shown in FIG. 2, the formation process of the first reflective concave layer of the first reflective wall will be described. First, a reflective concave surface 11 is formed. The reflective concave surface 11 is formed by a subparabola y ² = 2 _P11 times parabola = 2 _A ^ The apex is located on the first reflective wall, the focus is located inside the first reflective wall, and the secondary parabola y ² = 2 _A ^ The rotation axis 11A around its apex is rotated to form the reflective concave surface, and the reflective concave surface is horizontally arrayed adjacent to each other on the first reflection wall to obtain a first reflective concave layer. Similarly, the reflective concave surface 12 of the second reflective concave layer is formed by rotating the rotation axis 12A of the secondary parabola y ² = 2 _A2 around its apex. First reflection The concave layer and the second reflective concave layer are adjacent to each other, preferably as shown in FIG. 3, and each of the reflective concave surfaces on the first reflective wall are staggered to each other to form a reflective curved surface, that is, each of the second reflective concave layers The reflective concave surface extends between adjacent two reflective concave surfaces of the first reflective concave layer and abuts each other, and the abutting relationship between the remaining reflective concave layers is the same. Here, for the secondary parabola y ² = 2 _Pls x , that is, each parabola corresponding to each of the reflective concave layers of the first reflective wall, the distance between the vertices of the adjacent secondary parabola is L (nl, n), where n The range of values is greater than or equal to 2 and less than or equal to the maximum value of s, such as the _secondary parabola = 2 _Pl ^ and = 2 The distance between the vertices of _Pl2 is L ( 1, 2), and the apex of each parabola is at the center of the light hole. The directions of the vertical rotation axes may be equally spaced, that is, the distance L (n-1, n) is a constant value, whereby the number of layers of the reflective concave layer of the first reflection wall may be determined according to the height of the reflection wall. Through the above arrangement, as shown in Fig. 3, the reflective concave surface G12 of the odd-numbered layer and the reflective concave surface of the even-numbered reflective concave surface layer G11 may be aligned with each other in the respective columns. The reflective concave layer may be formed after cutting the main parabolic surface corresponding to the first reflective wall, or as shown in FIG. 3, after forming a reflective concave layer on the main parabolic surface corresponding to the first reflective wall. The cutting is performed, and the size of the cutting size can be determined according to the opening length L1 of the first reflecting wall and the angle R1.

Each reflective wall can be formed in the above manner, and all of the reflective walls can have the same number of reflective concave layers, and correspond one-to-one, and for the secondary parabola y ² = 2 _Pms ; c, for m different and s the same, that is, different The reflective concave layer of the reflective wall on the same layer, the apex of each parabola is on the same horizontal plane.

The reflective walls forming the flood reflector may be structurally symmetrical or asymmetrical. The floodlight emitters shown in Figures 4 and 5 are formed by splicing four reflective walls. The flood reflector shown in Figure 4 has a symmetrical rectangular opening, the first reflective wall is cut at an angle R1 and a length L1, and the second The wall is cut at an angle R1 and a length L2, and the opposite two reflectors have the same structure. The opening of the flood reflector shown in FIG. 5 is an irregular quadrangle, wherein the first reflective wall is cut at an angle R1 and a length L1, and the second reflective wall is cut at an angle R1 and a length L2, and the third reflective wall The cutting is performed at an angle R3 and a length L3, and the fourth reflecting wall is cut at an angle R4 and a length L4.

The inner wall of the cup is preferably mirror treated to achieve a better flooding effect. In addition, the selection of the secondary parabola = 2 _Pim x is preferably such that the light emitted by the light source is reflected off the opening.

 Figure 6 is a schematic diagram showing the reflected light of the first reflective wall in the flood reflector. The light source SO is reflected from the reflective concave surface of the first reflective wall and is emitted from the opening, wherein the distance H is the distance of the opening distance from the illuminated surface, and the illuminated area Klf is formed by the light passing through the first reflective wall and being formed on the illuminated surface.

 In the case of combined illumination by multiple flood reflectors, since the non-circular reflectors can be combined in a reasonable manner, the area of the illuminated area does not overlap, thereby increasing the effective illumination area and reducing energy waste. It has a greater advantage over circular reflectors.

 The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, equivalent changes and modifications made to the content of the patent application scope of the present invention should fall within the technical scope of the present invention.

Claims

Claim A flood reflector comprising a cup bottom and a cup body, wherein the cup bottom is provided with a lamp hole for allowing a light source to protrude from the lamp hole into the flood reflector; the inner wall of the cup body is composed of at least one A reflective wall that begins to abut at the edge of the bottom of the cup is formed, and an opening is formed in the upper portion of the cup body for emitting light emitted by the light source; wherein each reflective wall has the following structure: first defining and reflecting The main parabola corresponding to the wall = 2 _Pm, where the subscript m is a variable, representing a different reflective wall, stretching or winding one of the main parabola along a plane parallel to the vertical axis of rotation of the center of the lamp hole. The vertical rotation axis rotates to obtain a main parabolic surface corresponding to the reflection wall, and all the main parabolic surfaces are cut to obtain corresponding reflection walls; each reflective wall is provided with a reflective surface formed by a plurality of reflective concave layers, each The reflective concave layers each include a plurality of reflective concave surfaces having the same shape in close proximity to each other, and each of the reflective concave surfaces has the following structure: defining each of each reflective wall Light layer corresponding concave parabola = 2 _Pms x, where the subscript s is a variable representing a different layer of reflective concave surface, the apex of the parabola located at the corresponding reflective walls, is located inside the focal point of the reflecting wall, parabola After the rotation axis of the apex thereof is rotated, a reflective concave surface is formed, and the reflective concave surface is formed into a horizontal reflective array adjacent to each other to form a reflective concave layer, and the adjacent reflective concave layers are adjacent to each other. 2. The flood reflector according to claim 1, wherein: the reflective concave layer on each of the reflective walls, the reflective concave surfaces on the adjacent layers are staggered to each other to form a reflective curved surface, and one of the reflective concave layers The reflective concave surface extends between adjacent two reflective concave surfaces of the adjacent layer and abuts each other. 3. The flood reflector according to claim 2, wherein: the secondary parabola y ² = 2 _Pns x , and the apex of each parabola having the same m value and different s values is at the center of the light hole. The vertical axis of rotation is equally spaced in the direction of the axis. 4. The flood reflector according to claim 3, wherein: all of the reflective walls have the same number of reflective concave layers and correspond one-to-one; the secondary parabola y ² = 2 _Pm ^, for m The vertices of the different parabolas of the same s are on the same horizontal plane. The flood reflector according to any one of claims 1 to 4, characterized in that the reflecting wall encloses a non-circular opening in the upper portion of the cup. The floodlight reflector according to claim 5, wherein the secondary parabola = 2 _Pms x is set such that the light emitted by the light source is reflected by one time to exit the opening. 7. The flood reflector according to claim 6, wherein: the inner wall of the cup is mirror-finished. A method of forming a flood reflector according to claim 1, comprising: the following steps (1) First determining the desired shape of the opening, the upper edge of each reflecting wall forming a straight side or an arc of the opening; thereby determining the number of reflecting walls according to the shape of the opening, and selecting a corresponding one of the reflecting walls Main parabola = 2 _{Pm ;} (2) One of the main parabola corresponding to the straight edge is stretched in a direction parallel to the plane of the vertical axis of rotation of the center of the light hole to obtain a main parabolic surface corresponding to the respective reflective wall; corresponding to the main parabola of the arc segment One of the main parabolic curved surfaces corresponding to the respective reflecting walls is rotated about the vertical rotating axis; and finally the main parabolic curved surface corresponding to each reflecting wall is obtained;  (3) dividing the main parabolic surface corresponding to each reflective wall in the direction of the vertical rotation axis, each of the division points being at the position of the vertex of the secondary parabola forming a reflective concave surface, the parabola bypassing the rotation of its vertex After the shaft rotates, a reflective concave surface on each layer is formed on the main parabolic curved surface corresponding to each reflective wall, and the reflective concave surfaces of each layer are adjacent to each other to form a reflective concave layer, and adjacent reflective concave layers are mutually connected. Adjacent; respectively, each main parabolic curved surface formed with the reflective concave layer is cut according to the required opening length and the angle occupied on the circumference of the flood reflector, and each reflective wall is obtained, and the reflective walls are spliced to each other. That is, a reflective reflector of a desired shape is formed; or the main parabolic curved surface corresponding to each reflective wall is first cut and then each reflective concave layer is formed. 9. A method of forming a flood reflector according to claim 8, wherein: in step (3), each main parabolic surface is equally divided before or after cutting, and each layer is The reflective concave surface of the array is selected such that the reflective concave surfaces of the array are staggered adjacent to each other, and a reflective concave surface on a reflective concave layer extends between adjacent two reflective concave surfaces of the adjacent layer and is adjacent to each other; the secondary parabola The reflective concave surfaces on the reflective concave layer of the odd-numbered layers and the reflective concave-surface layers of the even-numbered layers are selected to be aligned with each other on the respective columns. 10. A method of forming a flood reflector according to claim 9, wherein: each of the main curved surfaces has the same number of division points, and the positions of the divisions are the same, so that the vertices of the inverse concave surfaces on the same layer of all the reflection walls are located. On the same level.