CN107435818A - Luminous ring and cooling fan - Google Patents

Abstract

The application discloses luminous ring and radiator fan, luminous ring includes light-emitting component, leaded light strip and semi-transparent structure. The two end parts of the light guide strip are oppositely arranged to enable the light guide strip to be annular, the two end parts are respectively arranged at two sides of the light emitting component, and light rays emitted by the light emitting component are respectively emitted into the two end parts of the light guide strip. The semi-transparent structure is at least partially arranged on one side of the two end parts of the light guide strip and at least partially covers the two end parts of the light guide strip. The application provides a cooling fan, which comprises a fan body and a luminous ring annularly arranged around the fan body.

Description

Light ring and cooling fan

technical field

The present application relates to the technical field of heat dissipation, and in particular to a luminous ring capable of emitting ring-shaped light with uniform brightness and a heat dissipation fan.

Background technique

Light-emitting diodes have advantages such as long life, small size, high shock resistance, low heat generation, and low power consumption, so they have been widely used as indicators or light sources in households and various equipment. In recent years, light-emitting diodes have been developed towards high power, so their application fields have been extended to road lighting, large outdoor signage, traffic lights or light sources for decorative lamps.

Generally speaking, in addition to the light source, the above-mentioned lamps are usually equipped with light guides of appropriate shape and material to transmit light to reduce the light loss rate. One of the commonly used light guiding elements is an optical fiber, which has a good light guiding effect. However, due to the characteristics of the optical fiber, the light is introduced and exported from the cross-sections at both ends, and the amount of light guided from the end of the fiber is greater than the amount of light reflected from the side wall of the fiber, so when the fiber is used as a light guide, there will be A condition in which the brightness of the endpoints and middle segments is uneven.

Contents of the invention

An embodiment of the present application provides a light-emitting ring, which can emit ring-shaped light with uniform brightness.

Another embodiment of the present application provides a cooling fan, which can emit a ring-shaped light with uniform brightness around the fan body.

According to one aspect of the present application, a light-emitting ring is provided, which includes a light-emitting component, a light-guiding strip, and a semi-transparent structure. The two ends of the light guide bar are arranged opposite to each other so that the light guide bar is ring-shaped, and the two ends are respectively arranged on both sides of the light-emitting component, and the light emitted by the light-emitting component respectively enters the two ends of the light guide bar. The semi-transparent structure is at least partially disposed on one side of the two ends of the light guide bar, and at least partially covers the two ends of the light guide bar.

In an embodiment of the present application, the above-mentioned semi-transparent structure includes a first portion corresponding to the light-emitting component and a second portion corresponding to the light guide strip, and the thickness of the first portion is different from that of the second portion.

In an embodiment of the present application, the above-mentioned first portion has a rough surface.

In an embodiment of the present application, the above-mentioned semi-transparent structure is a semi-transparent ring, which is disposed on the periphery of the light guide bar and at least partially covers the light guide bar.

In an embodiment of the present application, the above-mentioned light-emitting component includes a printed circuit board and two light-emitting elements, and the two light-emitting elements are respectively arranged on two sides of the printed circuit board, and respectively project light toward two ends of the light guide bar.

In an embodiment of the present application, the above-mentioned light-emitting component includes a circuit board and a light-emitting element, the circuit board has a perforation, and the light-emitting element is located in the through-hole and projects light toward both ends of the duct strip.

In an embodiment of the present application, the above-mentioned light-emitting component is a straw-hat-shaped light-emitting diode for projecting light toward two ends of the duct strip.

In an embodiment of the present application, the above-mentioned luminous ring further includes an annular base, which is arranged opposite to the semi-transparent structure, and is arranged around the periphery of the light guide strip, and the light-emitting component and the light guide are fixed by the semi-transparent structure. strip.

According to another aspect of the present application, a cooling fan is provided, which includes a fan body and the above-mentioned luminous ring, and the luminous ring is arranged around the fan body.

Based on the above, the light-emitting ring of the present application arranges the two ends of the light-guiding strip opposite to each other so that the light-guiding strip has a ring shape and is arranged on both sides of the light-emitting component. At least part of the semi-transparent structure is arranged on one side of the ring formed by the light-emitting component and the light guide bar, and at least partially covers both ends of the light guide bar, so that the light passes through the semi-transparent structure It is then able to emit an aperture with uniform brightness. The luminous ring of the present application can be arranged around the fan body, so that the cooling fan can provide a good visual effect while the fan body is running.

In order to make the above-mentioned features and advantages of the present application more comprehensible, the specific embodiments are exemplified below and described in detail in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of a light-emitting ring according to an embodiment of the present application.

Fig. 2 is a three-dimensional exploded schematic view of the luminous ring in Fig. 1 omitting electric wires.

FIG. 3 is a partially enlarged schematic diagram of the area A behind the semi-transparent structure and the annular base hidden by the light-emitting ring in FIG. 1 .

Fig. 4 is a schematic cross-sectional view along line B-B after the luminous ring hides the annular base in Fig. 1 .

Fig. 5 is a schematic cross-sectional view of the C-C line after the luminous ring hides the annular base in Fig. 1 .

FIG. 6 is a schematic partial cross-sectional view of a light-emitting ring according to another embodiment of the present application.

7 and 8 are partial cross-sectional schematic diagrams of various light-emitting rings according to other embodiments of the present application.

FIG. 9 is a schematic diagram of a cooling fan according to an embodiment of the present application.

Wherein, the reference signs are explained as follows:

L1, L2: light

10: cooling fan

12: Fan body

100: Luminous Ring

110, 110b, 110c: light emitting components

112: Printed circuit board

112b: circuit board

114b: perforation

116, 116b, 116c: light source

120: light guide strip

122: end

130, 130a: Semi-transparent structure

132, 132a: Part I

134, 134a: Part II

140: ring base

150: wire

detailed description

An embodiment of the present application provides an improved luminous ring, which includes a luminous component, a luminous strip and a semi-transparent structure. Among them, the two ends of the light guide strip are connected to form a ring; the light-emitting component, as the light source of the entire light-emitting ring, is placed at the junction of the two ends of the light guide strip, and the light emitted by the light-emitting component is injected from the two ends of the light-emitting component respectively. In the light guide strip; the semi-transparent structure is at least partially arranged on one side of the head and tail ends of the light guide strip, and at least partially covers the head and tail ends of the light guide strip, so as to cover the part without the light guide strip (ie Placed at the junction of the first and last ends of the light guide strip where the light-emitting component is placed), the original darker position is brightened and the brighter position is darkened (described in detail below), so as to achieve the purpose of uniform brightness of the entire luminous ring. In another embodiment, the semi-transparent structure is a semi-transparent ring, which is arranged around the periphery of the light guide bar and at least partially covers the light guide bar.

Taking the semi-transparent structure as a semi-transparent ring as an example, the luminous ring provided by the present application will be described in detail below. Of course, the semi-light-transmitting structure may not be ring-shaped, but an arc, semicircle, etc. that are only provided at the connection between the first and last ends of the light guide bar on which the light-emitting component is placed.

FIG. 1 is a schematic diagram of a light-emitting ring according to an embodiment of the present application. Please refer to FIG. 1, FIG. 2 is a three-dimensional exploded schematic view of the luminous ring in FIG. 1 without wires. FIG. 3 is a partially enlarged schematic diagram of the area A behind the semi-transparent structure and the annular base hidden by the light-emitting ring in FIG. 1 . Fig. 4 is a schematic cross-sectional view along line B-B after the luminous ring hides the annular base in Fig. 1 . Fig. 5 is a schematic cross-sectional view of the C-C line after the luminous ring hides the annular base in Fig. 1 . Please refer to FIG. 1 to FIG. 5 at the same time. The luminous ring 100 of this embodiment can emit uniform ring-shaped light, which will be introduced in detail below.

As shown in FIGS. 1 and 2 , the luminous ring 100 of this embodiment includes a luminous component 110 , a light guide strip 120 , a semi-transparent structure 130 , an annular base 140 and wires 150 . The lighting assembly 110 includes at least one light source 116 adapted to emit light toward opposite sides. More specifically, as shown in FIG. 3 , in this embodiment, the light-emitting component 110 includes a printed circuit board 112 and two light sources 116 disposed on both sides of the printed circuit board 112 , and each light source 116 is a chip-type LED. The two light sources 116 can emit light to opposite sides of the printed circuit board 112 (ie, the left and the right in FIG. 3 ). In a specific implementation, the diameter of the light guide strip 120 may be larger than the light emitting surface of the light source 116 (light emitting diode).

In this embodiment, the light guide strip 120 is an example of an optical fiber, but the type of the light guide strip 120 is not limited thereto. The light guide strip 120 has two opposite ends 122, and the two ends 122 are respectively disposed on both sides of the two light sources 116 of the light emitting component 110, so that the light emitting component 110 and the light guide strip 120 together form an annular shape as shown in FIG. . The light emitted by the two light sources 116 of the light emitting component 110 can respectively enter the two ends 122 of the light guide bar 120 .

Please refer to FIG. 2 , the semi-transparent structure 130 is disposed on one side of the ring formed by the light emitting component 110 and the light guide bar 120 , and the ring base 140 is disposed on the other side of the ring formed by the light emitting component 110 and the light guide bar 120 , so as to fix the light emitting component 110 and the light guide bar 120 together with the semi-transparent structure 130 . More specifically, the cross-section of the semi-transparent structure 130 is U-shaped (as shown in FIG. 5 ), covering at least one side of the light guide bar 120 and the light-emitting component 110 (for example, the semi-transparent structure 130 in FIG. cover the upper side and the left and right sides of the light guide bar 120), and the annular base 140 (shown in FIG. side). The semi-transparent structure 130 and the annular base 140 respectively have structures capable of being fixed or fastened to each other, so that the light guide bar 120 and the light-emitting component 110 are confined and fixed between the semi-transparent structure 130 and the annular base 140 . Of course, in other embodiments, the ring base 140 may also be omitted from the light ring 100 , so that the light emitting component 120 and the light guide bar 110 are directly fixed on the semi-transparent structure 130 .

In this embodiment, the semi-transparent structure 130 can transmit part of the light, so that the light emitting ring 100 can emit light on the side of the semi-transparent structure 130 . If the luminous ring 100 only needs to emit light from the side of the semi-transparent structure 130 , the ring base 140 can be made of opaque material, so that the light of the luminous ring 100 on the side of the ring base 140 is shielded. In addition, the inner surface of the ring base 140 can also be equipped with a reflective material (not shown), such as reflective paper or reflective paint, so as to reflect the light toward the semi-transparent structure 130 .

It is worth mentioning that, due to the characteristics of the optical fiber that the light is introduced and exported from both ends, only a small part of the light can be reflected from the side wall of the optical fiber. Therefore, the brightness of the light emitted from the sidewall and the two ends 122 of the light guide bar 120 will be different. More specifically, in this embodiment, it can be seen in FIG. 4 that the light L1 emitted by the light source 116 on the left will pass along the light guide strip 120 to the end 122 on the right, and from the right End 122 leads out. Similarly, the light L2 emitted by the light source 116 on the right is transmitted along the light guide strip 120 to the end 122 on the left, and is exported from the end 122 on the left. Therefore, the light guide strip 120 will be brighter near the two ends 122 than other parts, resulting in uneven brightness of the light emitted by the light emitting ring 100 .

In order to avoid the above situation, please refer to FIG. 4 , the semi-transparent structure 130 includes a first portion 132 corresponding to the light emitting component 110 and a second portion 134 corresponding to the light guide bar 120 . Because the light guide strip 120 is brighter than other parts near the two ends 122, in this embodiment, the thickness of the first part 32 of the semi-transparent structure 130 is greater than the thickness of the second part 134, so as to weaken the light passing through the first part 132. of light brightness. Therefore, the brightness of the light emitted from the two ends 122 of the light guide bar 120 after passing through the first part 132 of the semi-transparent structure 130 will be close to that of the light leaked from the sidewall of the light guide bar 120 through the semi-transparent structure 130 The brightness behind the second part 134 of the light emitting ring 100 can emit light with uniform brightness throughout the circle. In addition, in this embodiment, the first part 132 may also have a rough surface or a microstructure, so that the light passing through the first part 132 can create a diffuse effect, thereby increasing the uniformity of the light.

Certainly, the form of the semi-transparent structure 130 may vary according to the light-emitting component 110 , and the form of the semi-transparent structure 130 is not limited to the above. Other implementation manners will be cited below, and it should be noted that in the following embodiments, elements that are the same or similar to those in the preceding embodiments are represented by the same or similar symbols, and no further details are given here.

FIG. 6 is a schematic partial cross-sectional view of a light-emitting ring according to another embodiment of the present application. Please refer to FIG. 6, the main difference between the embodiment in FIG. 6 and the previous embodiment is that in FIG. The thickness of the second portion 134 .

In this embodiment, if the brightness of the light source 116 is low and the place close to the light source 116 is dark, the thickness of the semi-transparent structure 130 corresponding to the first part 132 of the light-emitting component 110 is smaller than that corresponding to the light guide strip 120. The thickness of the second portion 134 is increased to increase the brightness of light passing through the first portion 132 . Therefore, the brightness of the light emitted from the two ends 122 of the light guide bar 120 after passing through the first part 132 of the semi-transparent structure 130 will be close to that of the light leaked from the sidewall of the light guide bar 120 through the semi-transparent structure 130 The brightness after the second portion 134 of the second portion 134 is improved, so that the light emitted from the semi-transparent structure 130 has a uniform brightness.

In addition, the form of the light emitting component 110 is not limited to the above. 7 and 8 are partial cross-sectional schematic diagrams of various light-emitting rings according to other embodiments of the present application. Please refer to FIG. 7 first. The main difference between the embodiment in FIG. 7 and the embodiment in FIG. 1 is that in FIG. Inside the through hole 114b is a light emitting diode. That is to say, in this embodiment, the light source 116b can directly emit light rays L1 and L2 in opposite directions towards the two ends 122 of the light guide bar 120 due to being embedded in the through hole 114b of the circuit board 112b. In a specific implementation, the diameter of the light guide strip 120 may be larger than the light-emitting surface of the light-emitting diode.

Please refer to FIG. 8 again. The main difference between the embodiment of FIG. 8 and the embodiment of FIG. 1 is that, in FIG. 8 , the light emitting component 110c is a light source 116c of a straw hat type LED. That is to say, the light source 116c emits light toward the entire side and the bottom, so that the two ends 122 of the light guide bar 120 receive the light rays L1 and L2. In a specific implementation, the diameter of the light guide strip 120 may be larger than the light-emitting surface of the light-emitting diode.

The luminous ring 100 can be used as decoration, warning or lighting. FIG. 9 is a schematic diagram of a cooling fan according to an embodiment of the present application. Referring to FIG. 9 , the cooling fan 10 of this embodiment includes a fan body 12 and a light ring 100 surrounding the fan body 12 . The light ring 100 is the light ring provided in the previous embodiments of the present application. The cooling fan 10 emits uniform light through the light ring 100 to provide a good visual effect while the fan body 12 is running.

Certainly, the above is only one application of the luminous ring 100 , and in other embodiments, the luminous ring 100 can also be arranged on the front or rear of the bicycle, or other places as needed. Or, the luminous ring 100 can also be used alone as a decoration in a dark place, such as a ring-shaped luminous decoration used in a concert. The application of the light ring 100 is not limited to the above.

To sum up, the light-emitting ring of the present application arranges the two ends of the light-guiding strip facing each other so that the light-guiding strip has a ring shape and is arranged on both sides of the light-emitting component. At least part of the semi-transparent structure is arranged on one side of the ring formed by the light-emitting component and the light guide bar, and at least partially covers both ends of the light guide bar, so that the light passes through the semi-transparent structure It is then able to emit an aperture with uniform brightness. The luminous ring of the present application can be arranged around the fan body, so that the cooling fan can provide a good visual effect while the fan body is running.

Although the present application has been disclosed as above with the embodiments, it is not intended to limit the present application. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present application. Therefore, the present application The scope of protection should depend on the scope defined by the claims.

Claims (9)

1. A luminous ring, characterized in that it comprises: Lighting components; The two ends of the light guide strip face each other so that the light guide strip is ring-shaped, and the two ends are respectively arranged on both sides of the light-emitting component, and the light emitted by the light-emitting component enters the light guide strip respectively. ends; and The semi-transparent structure is at least partially disposed on one side of the two ends of the light guide bar, and at least partially covers the two ends of the light guide bar. 2. The luminous ring according to claim 1, wherein the semi-transparent structure comprises a first part corresponding to the light-emitting component and a second part corresponding to the light guide strip, and the thickness of the first part is different from that of the light guide strip. The thickness of the second part. 3. The light ring as claimed in claim 2, wherein the first portion has a rough surface. 4 . The luminous ring according to claim 1 , wherein the semi-transparent structure is a semi-transparent ring, which is disposed on the periphery of the light guide bar and at least partially covers the light guide bar. 5. The luminous ring according to claim 1, wherein the light-emitting component comprises a printed circuit board and two light-emitting elements, the two light-emitting elements are respectively arranged on two sides of the printed circuit board, and respectively face the Both ends cast light. 6. The light ring according to claim 1, wherein the light emitting assembly comprises a circuit board and a light emitting element, the circuit board has a perforation, the light emitting element is located in the perforation, and faces the two ends of the duct strip projected light. 7 . The light ring as claimed in claim 1 , wherein the light emitting component is a straw hat type light emitting diode for projecting light towards the two ends of the duct strip. 8. The light ring of claim 1, further comprising: The ring-shaped base is arranged opposite to the semi-transparent structure, and is arranged around the periphery of the light-guiding strip, and the light-emitting component and the light-guiding strip are fixed by the semi-transparent structure. 9. A cooling fan, characterized in that it comprises: the fan body; and The luminous ring according to any one of claims 1 to 8, which is arranged around the fan body.