Light guide structure of a hair dryer

Abstract

The utility model discloses a light guide structure of hair dryer. It includes: light guide spare, light source board is set up in the side of light guide spare, luminous body is set up on light source board and is located on the side of light source board opposite light guide spare, the light -admitting surface is set up in the first surface of light guide spare, and the light -admitting surface is located on the side of light guide spare opposite luminous body, the light -emitting surface is set up in the second surface of light guide spare, a plurality of sections of reflection inclined plane no.

Description

Technical Field

[0001] This utility model relates to the technical field of light guide systems, and in particular to a light guide structure for a hair dryer. Background Technology

[0002] A light guide is a structural component that directs light emitted by an LED from the PCB to the front panel or the light-emitting position. The main function of a light guide is to effectively guide the light emitted by the light source to the area that needs illumination. It typically consists of a light-incident surface, a reflective surface, and a light-emitting surface. The light-incident surface faces the light source, and the reflective surface reflects the light to the light-emitting surface.

[0003] Currently, light guide components on the market, with unchanged light-inlet structure and large light-outlet width, exhibit poor light guiding effect and uneven light guiding, failing to achieve uniform light output across light-outlet surfaces of varying widths.

[0004] In summary, there is a need for a light guide structure in a hair dryer that can achieve uniform light emission on light-emitting surfaces of different widths without changing the structure of the light-inlet surface. Utility Model Content

[0005] This invention aims to overcome the shortcomings of existing technologies, which, under the premise of unchanged light-inlet structure and large light-outlet width, result in poor light guiding effect, uneven light guiding, and inability to achieve uniform light transmission on light-outlet surfaces of different widths. It provides a light guiding structure for a hair dryer that can achieve uniform light output on light-outlet surfaces of different widths without changing the light-inlet structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A light guiding structure for a hair dryer, comprising:

[0008] Light guide;

[0009] A light source plate is disposed on the side of the light guide component;

[0010] A light-emitting element is disposed on the light source plate and located on the side of the light source plate directly opposite the light guide;

[0011] A light-incoming surface is disposed on the first surface of the light guide, and the light-incoming surface is located on the side of the light guide that faces the light-emitting body;

[0012] The light-emitting surface is disposed on the second surface of the light guide;

[0013] Several reflective inclined surfaces are distributed in a stepped manner on the third surface of the light guide and are adapted to the width of the light emitting surface. The reflective inclined surfaces are disposed between the light-inlet surface and the light-emitting surface, and the reflective inclined surfaces are inclined towards the light emitting surface from the end closer to the light-emitting body to the end farther away from the light-emitting body.

[0014] After the light-emitting element on the light source board emits light, the light enters the light-inlet surface and then reaches the first reflective inclined surface, where it is reflected to the light-emitting surface. This invention, without changing the light-inlet surface, employs a multi-segment reflective inclined surface design that matches the width of the light-emitting surface, ensuring that reflected light reaches the light-emitting surface from both sides and the middle, achieving a uniform light emission effect. Furthermore, this solution is applicable to light-emitting surfaces of varying widths.

[0015] Preferably, the light guide includes a light guide ring, with the light-incoming surface disposed on the annular end face of the light guide ring, a reflective inclined surface disposed on the inner side wall of the light guide ring, and the light-exiting surface disposed on the outer side wall of the light guide ring. The projection of the reflective inclined surface perpendicular to the axis of the light guide is opposite to the light-incoming surface, and the projection of the reflective inclined surface parallel to the axis of the light guide is opposite to the light-exiting surface. The number of light-emitting elements is several, arranged in a ring on the light source plate and facing the light-incoming surface. This light guide structure can be applied to scenarios with multi-point light intake. In this scheme, the light source uses multiple light-emitting elements arranged around the annular end face of the light guide ring, where the annular end face of the light guide ring is the light-incoming surface, the reflective inclined surface is disposed on the inner ring of the light guide ring, and the light-exiting surface is disposed on the outer ring of the light guide ring. After the light-emitting element on the light source board emits light, the light enters the light-inlet surface on the annular end face of the light guide ring. The light then reaches the reflective inclined surface on the inner ring of the light guide ring and is reflected to the light-exit surface on the outer ring. With the light-inlet surface remaining constant, a multi-segment reflective inclined surface design, matching the width of the light-exit surface, ensures that reflected light reaches the light-exit surface from both sides and the center, achieving a uniform light guiding effect.

[0016] Preferably, the reflective slope is a plane, a concave surface, or a convex surface. Linear plane reflection is preferred for the reflective slope, but concave or convex designs can also be used as needed to meet the requirements of light-emitting surfaces with different widths and areas, thus offering a wide range of applications.

[0017] Preferably, the light guide includes a light guide post, a light guide disc, and a second light guide ring. The light-entry surface is disposed on the end face of one end of the light guide post. The end face of the other end of the light guide post is fixed to one side of the light guide disc, and the two are integrally formed. The other side of the light guide disc is provided with a conical groove corresponding to the light guide post. The central axis of the conical groove coincides with the central axis of the light guide post. A second reflective inclined surface is provided on the groove wall of the conical groove. The outer ring wall of the light guide disc matches and is fixed to the inner ring wall of the second light guide ring, and the two are integrally formed. The reflective inclined surface... A light-emitting surface is disposed on the annular end face of one end of the second light guide ring and located outside the second reflective inclined surface. The light-emitting surface is disposed on the annular end face of the other end of the second light guide ring. The projection of the second reflective inclined surface perpendicular to the axis of the light guide is opposite to the light-inlet surface. The projection of the second reflective inclined surface parallel to the axis of the light guide is opposite to the projection of the first reflective inclined surface parallel to the axis of the light guide. The projection of the first reflective inclined surface perpendicular to the axis of the light guide is opposite to the light-emitting surface. The number of light-emitting elements is single and they face the light-inlet surface. This light guide structure can be applied to single-point light-inlet scenarios. In this scheme, the light source uses a single light-emitting element arranged facing the end face of the light guide column, where the end face of the light guide column is the light-inlet surface, the second reflective inclined surface is disposed on the groove wall of the conical groove, the first reflective inclined surface is disposed on the annular end face of one end of the second light guide ring, and the light-emitting surface is disposed on the annular end face of the other end of the second light guide ring. After the light-emitting element on the light source board emits light, the light enters the light-inlet surface on the end face of the light guide column. The light then reaches the second reflective slope on the wall of the conical groove, and is reflected by the second reflective slope to the first reflective slope on one end face of the second light guide ring. The light is then reflected by the first reflective slope to the light-exit surface on the other end face of the second light guide ring. With the light-inlet surface remaining constant, a multi-segment reflective slope design, matching the width of the light-exit surface, ensures that reflected light reaches the light-exit surface from both sides and the middle. Furthermore, the distance between the first and second reflective slopes can be adjusted according to the light-exit surface, achieving a uniform light output effect.

[0018] Preferably, the light-gathering surface is a plane, a concave surface, or a convex surface. This design offers wide applicability.

[0019] Preferably, the second reflective slope is treated with a high-gloss process. The second reflective slope is a high-gloss surface with a smooth surface effect, which increases the light reflectivity and enhances the reflection effect.

[0020] Preferably, the reflection angle of the second reflective slope is the same as that of the first reflective slope.

[0021] Preferably, the reflection angle of the first reflective slope is 30° to 60°. Setting the reflection angle of the first reflective slope to 45° allows for relatively small light loss during reflection, enabling more efficient use of light.

[0022] Preferably, both the light-incoming surface and the reflective slope are treated with a high-gloss finish. Both the light-incoming surface and the reflective slope are high-gloss surfaces, with a smooth surface effect, which increases light reflectivity and enhances the reflection effect.

[0023] Preferably, the light guide material is either PC or acrylic, which provides good light guiding effect.

[0024] The beneficial effects of this utility model are: it provides uniform light guiding for light-emitting surfaces of different widths; it has a wide range of applications; it improves light reflectivity and enhances the reflection effect; it enables relatively small light loss during the reflection process and allows for more efficient use of light; and it has a good light guiding effect. Attached Figure Description

[0025] Figure 1 This is a perspective view of the first type of light guide component of this utility model;

[0026] Figure 2 This is a front view of the first type of light guide of this utility model;

[0027] Figure 3 yes Figure 2 Sectional view at point AA;

[0028] Figure 4 This is an assembly drawing of the first type of light guide component of this utility model on the handle housing of a hair dryer;

[0029] Figure 5 This is a front view of the second type of light guide component of this utility model;

[0030] Figure 6 yes Figure 5 Sectional view at point BB.

[0031] In the diagram: 1. Light source board, 2. Light emitter, 3. Light-entry surface, 4. Light-exit surface, 5. Reflective slope one, 6. Light guide ring one, 7. Light guide column, 8. Light guide plate, 9. Light guide ring two, 10. Conical groove, 11. Reflective slope two, 12. Hair dryer handle housing. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1 and Figure 5 As shown, a light guide structure for a hair dryer includes:

[0034] Light guide;

[0035] Light source plate 1 is disposed on the side of the light guide;

[0036] The light-emitting element 2 (LED lamp bead) is disposed on the light source plate 1 and located on the side of the light source plate 1 facing the light guide component;

[0037] The light-incoming surface 3 is disposed on the first surface of the light guide, and the light-incoming surface 3 is located on the side of the light guide that faces the light-emitting body 2.

[0038] Light-emitting surface 4 is disposed on the second surface of the light guide;

[0039] Several reflective inclined surfaces 5 are distributed in a stepped manner on the third surface of the light guide and are matched with the width of the light emitting surface 4. The reflective inclined surfaces 5 are set between the light-inlet surface 3 and the light-emitting surface 4. The reflective inclined surfaces 5 are inclined towards the light emitting surface 4 from the end near the light-emitting body 2 to the end away from the light-emitting body 2.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the light guide includes a light guide ring 6, a light-inlet surface 3 disposed on the annular end face of the light guide ring 6, a reflective inclined surface 5 disposed on the inner side wall of the light guide ring 6, and a light-outlet surface 4 disposed on the outer side wall of the light guide ring 6. The projection of the reflective inclined surface 5 perpendicular to the axis of the light guide is opposite to the light-inlet surface 3, and the projection of the reflective inclined surface 5 parallel to the axis of the light guide is opposite to the light-outlet surface 4. The number of light-emitting bodies 2 is several, and the light-emitting bodies 2 are distributed in a ring on the light source plate 1 and face the light-inlet surface 3.

[0041] The reflective inclined plane 5 can be a plane, a concave surface, or a convex surface.

[0042] like Figure 5 and Figure 6 As shown, the light guide includes a light guide post 7, a light guide disc 8, and a light guide ring 9. A light-entry surface 3 is disposed on the end face of one end of the light guide post 7. The end face of the other end of the light guide post 7 is fixed to one side of the light guide disc 8, and the two are integrally formed. A conical groove 10 corresponding to the light guide post 7 is provided on the other side of the light guide disc 8. The central axis of the conical groove 10 coincides with the central axis of the light guide post 7. A reflective inclined surface 11 is provided on the groove wall of the conical groove 10. The outer ring wall of the light guide disc 8 matches and is fixed to the inner ring wall of the light guide ring 9, and the two are integrally formed. A reflective inclined surface 5... The light-emitting surface 4 is located on the annular end face of one end of the light guide ring 2 9 and outside the reflective inclined surface 2 11. The light-emitting surface 4 is located on the annular end face of the other end of the light guide ring 2 9. The projection of the reflective inclined surface 2 11 perpendicular to the axis of the light guide is opposite to the light-inlet surface 3. The projection of the reflective inclined surface 2 11 parallel to the axis of the light guide is opposite to the projection of the reflective inclined surface 1 5 parallel to the axis of the light guide. The projection of the reflective inclined surface 1 5 perpendicular to the axis of the light guide is opposite to the light-emitting surface 4. The number of light-emitting bodies 2 is single and they face the light-inlet surface 3.

[0043] The light-gathering surface 3 can be a plane, a concave surface, or a convex surface.

[0044] The reflective bevel 21 is treated with a high-gloss finish.

[0045] The reflection angle of reflective inclined plane 211 is the same as that of reflective inclined plane 15.

[0046] The reflection angle of reflective inclined plane 5 is 30°~60°.

[0047] Both the light-glowing surface 3 and the reflective inclined surface 5 are treated with a high-gloss process.

[0048] The light guide material is either PC or acrylic.

[0049] like Figure 1 , Figure 2 and Figure 3 The light guide structure shown can be applied to scenarios with multi-point light intake. This scheme uses multiple light emitters (2) arranged around the annular end face of a light guide ring (6). The annular end face of the light guide ring (6) is the light intake surface (3), the reflective inclined surface (5) is located on the inner ring of the light guide ring (6), and the light output surface (4) is located on the outer ring of the light guide ring (6). After the light emitters (2) on the light source board (1) emit light, the light enters the light intake surface (3) on the annular end face of the light guide ring (6). After entering, the light reaches the reflective inclined surface (5) on the inner ring of the light guide ring (6) and is reflected by the reflective inclined surface (5) to the light output surface (4) on the outer ring of the light guide ring (6). With the light intake surface (3) unchanged, a multi-segment reflective inclined surface (5) design, matching the width of the light output surface (4), ensures that reflected light reaches the light output surface (4) from both sides and the middle, achieving a uniform light output effect. Figure 4 As shown, the light guide can be installed on the handle housing 12 of the hair dryer.

[0050] like Figure 5 and Figure 6The light guide structure shown can be applied to single-point light-incidence scenarios. In this scheme, a single light-emitting element 2 is positioned opposite the end face of the light guide post 7. The end face of the light guide post 7 is the light-incidence surface 3. A second reflective inclined surface 11 is set on the wall of the conical groove 10, a first reflective inclined surface 5 is set on the annular end face of one end of the second light guide ring 9, and the light-emitting surface 4 is set on the annular end face of the other end of the second light guide ring 9. After the light-emitting element 2 on the light source plate 1 emits light, the light enters the light-incidence surface 3 on the end face of the light guide post 7. After entering, the light reaches the second reflective inclined surface 11 on the wall of the conical groove 10, is reflected by the second reflective inclined surface 11 to the first reflective inclined surface 5 on one end of the second light guide ring 9, and is reflected by the first reflective inclined surface 5 to the light-emitting surface 4 on the other end of the second light guide ring 9. With the light-inlet surface 3 unchanged, a multi-segment reflective inclined surface 15 that matches the width of the light-outlet surface 4 is adopted, so that reflected light reaches the light-outlet surface 4 from both sides and the middle. At the same time, the distance between reflective inclined surface 15 and reflective inclined surface 21 can also be adjusted according to the light-outlet surface 4, thereby achieving a uniform light output effect.

Claims

1. A light guide structure for a hair dryer, characterized by, include: Light guide; A light source plate (1) is disposed on the side of the light guide; A light-emitting element (2) is disposed on the light source plate (1) and located on the side of the light source plate (1) directly opposite the light guide; A light-inlet surface (3) is disposed on the first surface of the light guide, and the light-inlet surface (3) is located on the side of the light guide that faces the light emitter (2); The light-emitting surface (4) is disposed on the second surface of the light guide; Several reflective inclined surfaces (5) are distributed in a stepped manner on the third surface of the light guide and are adapted to the width of the light emitting surface (4). The reflective inclined surfaces (5) are disposed between the light-inlet surface (3) and the light-emitting surface (4). The reflective inclined surfaces (5) are inclined from the end near the light-emitting body (2) to the end away from the light-emitting body (2) towards the light emitting surface (4).

2. The light guide structure of a hair dryer according to claim 1, wherein The light guide includes a light guide ring (6), the light-inlet surface (3) is disposed on the annular end face of the light guide ring (6), the reflective inclined surface (5) is disposed on the inner side wall of the light guide ring (6), the light-outlet surface (4) is disposed on the outer side wall of the light guide ring (6), the projection of the reflective inclined surface (5) perpendicular to the axis of the light guide is opposite to the light-inlet surface (3), the projection of the reflective inclined surface (5) parallel to the axis of the light guide is opposite to the light-outlet surface (4), and the number of light emitters (2) is several, the light emitters (2) are distributed in a ring on the light source plate (1) and face the light-inlet surface (3).

3. A light guide structure for a hair dryer according to claim 2, wherein The reflective inclined surface (5) is one of a plane, a concave surface, or a convex surface.

4. The light guide structure of a hair dryer according to claim 1, wherein The light guide includes a light guide post (7), a light guide disc (8), and a second light guide ring (9). The light-entry surface (3) is disposed on the end face of one end of the light guide post (7). The end face of the other end of the light guide post (7) is fixed to one side of the light guide disc (8) and the two are integrally formed. The other side of the light guide disc (8) is provided with a conical groove (10) corresponding to the light guide post (7). The central axis of the conical groove (10) coincides with the central axis of the light guide post (7). A second reflective inclined surface (11) is provided on the groove wall of the conical groove (10). The outer ring wall of the light guide disc (8) matches and is fixed to the inner ring wall of the second light guide ring (9) and the two are integrally formed. The first light-emitting surface (5) is set on the annular end face of one end of the second light guide ring (9) and is located outside the second light-emitting surface (11). The light-emitting surface (4) is set on the annular end face of the other end of the second light guide ring (9). The projection of the second light-emitting surface (11) perpendicular to the axis of the light guide is opposite to the light-inlet surface (3). The projection of the second light-emitting surface (11) parallel to the axis of the light guide is opposite to the projection of the first light-emitting surface (5) parallel to the axis of the light guide. The projection of the first light-emitting surface (5) perpendicular to the axis of the light guide is opposite to the light-emitting surface (4). The number of light-emitting bodies (2) is single and they face the light-inlet surface (3).

5. A light guide structure for a hair dryer according to claim 4, wherein The light-gathering surface (3) is one of a plane, a concave surface, or a convex surface.

6. The light guide structure of a hair dryer according to claim 4, characterized in that, The reflective inclined surface 2 (11) is treated with a high-gloss process.

7. The light guide structure of a hair dryer according to claim 4, wherein The reflection angle of the second reflective slope (11) is consistent with the reflection angle of the first reflective slope (5).

8. A light guide structure for a hair dryer according to claim 2 or 7, wherein The reflection angle of the reflective inclined plane (5) is 30°~60°.

9. The light guide structure of a hair dryer according to claim 2 or 4, wherein, Both the light-glowing surface (3) and the reflective inclined surface (5) are treated with a high-gloss process.

10. A light guide structure for a hair dryer according to claim 2 or 4, characterized in that, The light guide material is either PC or acrylic.

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