TW201825829A - Transparent lighting device - Google Patents

Abstract

Differing from conventional LED light bulbs lacking sense of design due to their white or milk-white appearance color, the present invention particularly discloses a transparent lighting device available to users for adding decorations by themselves. This transparent lighting device consists of a main body, a driving module, a light module, a transparent cover, and an efficiency enhancing unit. On the other hand, comparing to the conventional LED light bulbs just have 120-degree irritation angle, the transparent lighting device of the present invention is able to provide an omni-directional illumination because the illumination light is emitted by the whole transparent cover.

Description

Transparent light fixture

The invention relates to the technical field of lamps, in particular to a transparent lamp with a light guide plate as a transparent lamp cover.

Referring to Figure 1, a cross-sectional view of a conventional tungsten filament bulb is shown. As shown in FIG. 1, the conventional tungsten filament bulb 1a comprises a glass lampshade 11a, a tungsten wire 12a, a tungsten wire support frame 13a, a support post 14a, a lamp holder 15a, and a conductive metal frame 16a. Since the luminescence of the tungsten wire 12a is omni-direction, the tungsten filament bulb 1a quickly replaces the candle or the kerosene lamp. However, the main drawback of the tungsten filament bulb 1a is that the luminous efficiency (lm/w) is too low, often resulting in waste of energy; therefore, when the manufacturing technology of the light-emitting diode bulb is gradually matured and the price is gradually reduced, based on energy saving Important considerations, the tungsten filament bulb 1a is replaced by a light-emitting diode bulb.

Please refer to FIG. 2, which is a perspective view showing a conventional LED spherical lamp. As shown in FIG. 2, the conventional LED spherical lamp 1b includes a main body 11b, an LED driving module housed in the main body 11b, a lamp holder 12b, an LED lighting module 13b, and a lamp cover 14b. . The advantage of the LED spherical lamp 1b is that it saves energy and electricity; however, since the LED element 131b belongs to a point light source, the illumination angle of the LED spherical lamp 1b can only reach about 120 ^o (half-period light) at most. In view of this, the luminaire manufacturer usually applies a layer of light diffusing paint to the lamp cover 14b, thereby increasing the illuminating angle of the LED ball illuminator 1b.

Although the light diffusion coating is applied on the lamp cover 14b, the illumination angle of the LED spherical lamp 1b can be effectively increased, but the appearance color of the lamp cover 14b is always white or milky white, which lacks design and beauty. Therefore, Taiwan's new patent No. M514115 discloses an LED bulb of a tungsten-like bulb, which uses a plurality of LED strips instead of the tungsten 12a as shown in FIG. 1 as a main light-emitting unit. In the end, the LED bulbs proposed by Taiwan's new patent No. M514115 not only show the industrial wind design similar to the traditional tungsten filament bulbs, but also have the energy saving effect of the LED spherical lamps 1b as shown in Fig. 2.

Even if the LED bulb of the tungsten-like bulb proposed by Taiwan's new patent No. M514115 has the advantages of energy saving, full-circumference illumination, and industrial beauty, the LED bulb is still not perfect. For example, some people do not want to see the LED strips through the transparent lampshade, but rather want to see some styling products in the transparent lampshade; however, once the LED strips are inside the transparent lampshade When the accommodating space is removed, the LED bulb lamp cannot provide full-illumination illumination.

In view of this, the inventor of the present invention tried his best to study the invention, and finally developed a transparent lamp of the present invention. Different from the LED bulb of the tungsten-like bulb proposed by Taiwan New Patent No. M514115, the transparent lamp of the present invention can provide the full-circle illumination in addition to the user's preference for the decoration in the transparent lampshade. Illumination source.

Different from the conventional LED spherical lamps, the appearance color is always white or milky white and thus lacks design feeling and beauty. The main purpose of the present invention is to provide a transparent lamp that can be visually free of light and can be added by the user. The transparent lamp is composed of a main body, a driving module, a lighting module, a transparent lamp cover, and an efficiency lifting unit. On the other hand, compared with the conventional LED spherical lamp, the illumination angle can only reach about 120 ^o (half-period light) at most, and the transparent lamp of the present invention emits light through the entire transparent lamp cover, thereby providing a full-illumination illumination source.

In order to achieve the above-mentioned primary object of the present invention, the inventor of the present invention provides an embodiment of the transparent luminaire, which comprises: a main body; a driving module disposed in the main body; Is disposed on the main body and electrically connected to the driving module; wherein the light emitting module has a plurality of light emitting units; and a transparent light cover is formed by a light guide plate having a first refractive index, And a light incident surface, a light exit surface, and a bottom surface of the light guide plate respectively become a lamp cover edge, an outer wall surface and an inner wall surface of the transparent lamp cover; and one of the plurality of light emitting units has a light emitting surface Facing the lamp cover lip; and an efficiency improving unit disposed on the inner wall surface of the transparent lamp cover and having a second refractive index; wherein the second refractive index is greater than the first refractive index, and the first The refractive index system is greater than 1; wherein the transparent lamp cover has a plurality of curved portions; and, when a light beam emitted by the plurality of light emitting units is incident on the edge of the lamp cover and then enters inside the transparent lamp cover When the optical transmission is performed, the arc portions may destroy the total reflection of the light beam inside the transparent lamp cover, such that one of the light beams leaks out through the outer wall of the transparent lamp cover; wherein, when transmitted to the transparent lamp cover When the inner beam is directed toward the efficiency increasing unit, reflected light from one of the beams is reflected from the efficiency enhancing unit and further emitted outward through the outer wall of the transparent cover.

In the above embodiment of the transparent lamp, the transparent lamp cover may be a spherical lamp cover, a tubular lamp cover, or a modeling lamp cover.

In the embodiment of the transparent luminaire, the light guide plate may be made of any one of the following: polymethylmethacrylate (PMMA), polycarbonate (Polycarbonate, PC), silica (silica). Or a cyclic olefin copolymer (COC).

In the embodiment of the transparent lamp, the efficiency improvement unit is a film, and the film can be made of any of the following materials: titanium oxide, zirconium oxide, zinc oxide, antimony oxide, antimony oxide, molybdenum oxide, oxidation.铌, a combination of any two of the above, or a combination of any two or more of the above.

In the embodiment of the transparent luminaire, the efficiency improvement unit is a dot array or a plurality of randomly arranged dots, and the material of the dot array and the plurality of randomly arranged dots may be any of the following: titanium oxide, oxidation Zirconium, zinc oxide, cerium oxide, cerium oxide, molybdenum oxide, cerium oxide, a combination of any two of the above, or a combination of any two or more thereof.

In the embodiment of the transparent lamp, the efficiency improvement unit is a plurality of V-shaped grooves, and the V-shaped groove is integrally formed with the light guide plate.

In the embodiment of the transparent luminaire, the efficiency improving unit is a film, and the film can be made of any of the following materials: aluminum oxide, cerium oxide, magnesium oxide, zinc oxide, cerium oxide, and both of the above. A combination of the above or a combination of any two or more of the above.

In the embodiment of the transparent luminaire, the efficiency improvement unit is a dot array or a plurality of randomly arranged dots, and the material of the dot array and the plurality of randomly arranged dots may be any of the following: alumina, oxidation铪, magnesium oxide, zinc oxide, cerium oxide, a combination of any two of the above, or a combination of any two or more of the above.

In order to more clearly describe a transparent luminaire proposed by the present invention, a preferred embodiment of the present invention will be described in detail below with reference to the drawings.

Referring to Figure 3, there is shown an exploded perspective view of a first embodiment of a transparent light fixture of the present invention. As shown in FIG. 3 , the transparent lamp 1 of the present invention comprises a main body 11 , a driving module 12 , a lighting module 13 , and a transparent lamp cover 14 . The main body 11 is mainly configured to receive the driving module 12 and incorporate a mains connector 16 (commonly known as a lamp cap), so that the driving module 12 can be coupled to the mains connector 16 . On the other hand, the driving module 12 is disposed in the main body 11 , and the lighting module 13 is disposed on the main body 11 and includes at least one circuit substrate 131 and a plurality of light emitting units 132 .

Continuing to refer to FIG. 3, and referring also to FIG. 4, a side cross-sectional view of the light unit, the transparent lamp cover, and the efficiency improvement unit is shown. In particular, the present invention is made of at least one light guide plate material having a first refractive index, such that one of the cover rims 141, an outer wall surface and an inner wall surface of the transparent cover 14 is similar to a conventional light guide plate. Light incident surface, light exit surface, and bottom surface. As shown in FIG. 3 and FIG. 4, one of the plurality of light emitting units 132 has a light emitting surface facing the lamp cover edge 141. Moreover, it should be noted that the light emitting unit 132 may be an LED or an OLED, and the light guide plate material may be polymethylmethacrylate (PMMA), polycarbonate (Polycarbonate, PC), silica (silica). Or a cyclic olefin copolymer (COC). The parameters of the refractive index and light transmittance of the above various materials are summarized in the following Table (1). Table 1)

Please refer to Figure 3 and Figure 4 at the same time. The main technical means of the present invention is to have the transparent lamp cover 14 having a plurality of curved portions 142; such that a light beam 2 emitted by the plurality of light-emitting units 132 is incident on the lamp cover lip 141 and inside the transparent lamp cover 14 When the optical transmission is performed, the curved portions 142 may destroy the total reflection of the light beam 2 inside the transparent cover 14 such that one of the light beams 2 leaks light 21 through the outer wall surface of the transparent cover 14 (ie, the light exit surface). Shoot out.

Further, in order to increase the luminous efficiency (lm/w) of the transparent lamp 1, the present invention further adds an efficiency improving unit 15 (shown in FIG. 4) to the inner wall surface of the transparent lamp cover 14; wherein the efficiency improving unit The 15 series has a second index of refraction, and the second index of refraction is greater than the first index of refraction. The efficiency improving unit 15 shown in FIG. 4 is a film made of a material having a high refractive index such as titanium oxide (TiO ₂ ), zirconium oxide (ZrO ₂ ), zinc oxide (ZnO ₂ ), or cerium oxide ( Ta ₂ O ₅ ), cerium oxide (TeO ₂ ), molybdenum oxide (MoO ₃ ), cerium oxide (Nb ₂ O ₅ ), a combination of any two of the above, or a combination of any two or more of the above. Since the refractive index of the efficiency improving unit 15 is higher than 2.1, when the light beam 2 transmitted inside the transparent cover 14 is directed toward the efficiency improving unit 15, one of the reflected light 22 of the light beam 2 will be from the efficiency improving unit 15 Reflected and further emitted outward through the outer wall of the transparent cover 14, the effect of improving the luminous efficiency (lm/w) of the transparent lamp 1 is achieved.

Continuing to refer to FIG. 3, and referring also to FIG. 5, a side cross-sectional view of the light unit, the transparent lamp cover, and the efficiency improvement unit is shown. It should be noted that the present invention is not particularly limited. The efficiency improvement unit 15 must be a thin film. As shown in FIG. 5, the efficiency improvement unit 15 may also be a dot array or a plurality of randomly arranged dots; similarly, the The material of the dot array and the plurality of randomly arranged dots may be titanium oxide, zirconium oxide, zinc oxide, cerium oxide, cerium oxide, molybdenum oxide, or cerium oxide. Please continue to refer to the side cross-sectional view of the curved portion of the transparent lamp cover shown in FIG. 6. As shown in FIG. 6, in addition to the embodiment of the film and the dot, the efficiency improving unit 15 may be a microstructure including a plurality of V-shaped grooves, and the microstructure is integrally formed with the light guide plate material.

Obviously, based on the transparent lamp cover 14 being a spherical lamp cover, FIG. 3 is a view showing that the transparent lamp 1 is a bulb lamp; however, an engineer familiar with the lamp design should be able to appropriately change the transparent lamp 1 based on the technical spirit of the present invention. The implementation of the situation. Referring to Figure 7, there is shown an exploded perspective view of a second embodiment of the transparent luminaire of the present invention. As shown in Fig. 7, by designing the transparent cover 14 as a tubular lamp cover, the transparent lamp 1 of the present invention becomes a tube lamp. Moreover, the tube lamp contains a larger number of the light-emitting units 132 than the bulb (for example, the T8 tube lamp has 120 LEDs); therefore, in order to maintain the normal operation of the plurality of light-emitting units 132, the body 11 is external to the body 11. At least one heat dissipation structure 111 is designed. The heat dissipation structure 111 is generally a heat dissipation fin.

Referring again to Figure 8, a perspective view of a third embodiment of a transparent luminaire of the present invention is shown. Since the transparent lampshade 14 is made of a light guide plate material, its light transmittance is at least 88%. Therefore, whether in the activated state or the closed state, the transparent lamp 1 is visually free of light; simply speaking, when the user visually views the transparent lamp 1, the inside of the transparent lamp cover 14 is directly seen. For this reason, the transparent lamp 1 can be appropriately decorated by providing at least one design pattern PO on the outer wall surface of the transparent cover 14. As shown in FIG. 8 , after the plurality of curved portions 142 form a transparent cover 14 of the pumpkin shape, the shape pattern PO of the eyes, the nose, the mouth, and the like may be further attached or drawn on the wall surface of the transparent cover 14; When the plurality of light-emitting units 132 emit orange light, the transparent light fixture 1 becomes a pumpkin lantern.

Referring again to Figure 9, a perspective view of a fourth embodiment of a transparent luminaire of the present invention is shown. Similarly, based on the high transmittance of the transparent cover 14, it is also possible to appropriately decorate the transparent lamp 1 by providing at least one molding ornament DO inside the transparent cover 14. As shown in FIG. 9, after a plurality of curved portions 142 are formed into a transparent cover 14 of a crystal ball shape, a decorative ornament DO such as fish and water grass can be further disposed inside the transparent cover 14; The light-emitting unit 132 emits cool white light, and the transparent lamp 1 becomes a crystal ball aquarium.

Referring again to Fig. 10, there is shown a perspective view of a fifth embodiment of the transparent luminaire of the present invention. It should be noted that when the transparent lamp 1 of the present invention is applied as an ornament, the transmittance of the transparent cover 14 must be highly considered to enable the user to see the decorative ornament DO disposed inside the transparent cover 14. The shape and color. Therefore, as shown in FIG. 10, the present invention further covers a light transmittance enhancement unit 17 over the outer wall surface of the transparent cover 14; wherein the light transmittance enhancement unit 17 has a third refractive index, And the third refractive index is smaller than the refractive index of the transparent lamp cover 14. The material for manufacturing the light transmittance enhancement unit 17 may be magnesium fluoride (MgF ₂ ), cerium oxide (SiO ₂ ), polydimethylsiloxane (PDMS), a combination of any two of the above, Or a combination of any two or more of the above, and the parameters of the refractive index and the light transmittance are listed in the following Table (2). Table 2)

Referring again to FIG. 11, a side cross-sectional view of the light unit, the transparent lamp cover, and the efficiency improvement unit is shown. As shown in FIG. 4 and FIG. 11, in order to enable the device disposed inside the transparent cover 11 to be exposed to light, the material of the medium and low refractive index can be used to prepare the efficiency improving unit 15, for example, alumina (Al _{2 ).} O ₃ ), cerium oxide (HfO ₂ ), magnesium oxide (MgO), zinc oxide (ZnO), cerium oxide (Y ₂ O ₃ ), a combination of any two of the above, or a combination of any two or more thereof, and The parameters of the refractive index are organized in the following table (3). table 3)

Therefore, when the light beam 2 emitted by the plurality of light emitting units 132 is incident on the lamp cover edge 141 and optically transmitted inside the transparent lamp cover 14, the curved portions 142 may destroy the light beam 2 in the transparent lamp cover. The internal total reflection of 14 causes the leaked light 21 of the light beam 2 to be emitted outward through the outer wall surface (i.e., the light exiting surface) of the transparent cover 14. At the same time, there is no large refractive index difference between the efficiency improving unit 15 and the light guide plate material, and even if the reflected light 22 is reflected from the efficiency improving unit 15, part of the light beam 2 still passes through the efficiency improvement. The unit 15 is incident on the interior of the transparent lampshade 14 to provide illumination of the interior fixture.

Referring again to Figure 12, there is shown a side cross-sectional view of a sixth embodiment of the transparent luminaire of the present invention. The transparent lamp 1 of the sixth embodiment has the function of an aquarium. Therefore, the main body 11 further includes a waterproof receiving portion 112. In this embodiment, the main body 11 also serves as a carrier for the transparent cover 14. And a drive module 12 is housed. As shown in FIG. 12, the transparent cover 14 is also composed of a plurality of curved portions 142, and the waterproof receiving portion 112 is connected to the two cover edges 141 of the transparent cover 14. Moreover, the light emitting module 13 is disposed in the waterproof housing portion 112. Further, referring again to Fig. 13, there is shown a side cross-sectional view of a seventh embodiment of the transparent lamp of the present invention. Comparing FIG. 13 with FIG. 12, it can be seen that the basic structure of the seventh embodiment is almost the same as that of the sixth embodiment, but further includes another efficiency improving unit 15 disposed on the outer wall surface of the transparent lampshade 14, such that the arrangement is such that The seventh embodiment of the transparent luminaire 1 becomes a double illuminating luminaire.

Thus, the above-mentioned system has completely and clearly explained the transparent lamp of the present invention; and, as described above, the present invention has the following advantages:

(1) Unlike the conventional LED spherical lamp 1b (shown in FIG. 2), the appearance color is always white or milky white and thus lacks design feeling and beauty. The present invention particularly proposes to visually have no light source and allow the user to add a decorative object by himself. A transparent lamp 1 is composed of a main body 11, a driving module 12, a lighting module 13, a transparent lamp cover 14, and an efficiency lifting unit 15. On the other hand, compared with the conventional LED spherical lamp 1b, the illumination angle can only reach about 120 ^o (half-period light) at most, and the transparent lamp 1 of the present invention emits light through the entire transparent cover 14 so that full-circumference can be provided. Lighting source.

It is to be understood that the foregoing detailed description of the embodiments of the present invention is not intended to Both should be included in the scope of the patent in this case.

<present invention>

1‧‧‧Transparent lamps

11‧‧‧ Subject

12‧‧‧Drive Module

13‧‧‧Lighting module

14‧‧‧Transparent lampshade

15‧‧‧Efficiency Improvement Unit

16‧‧‧City Connector

131‧‧‧ circuit board

132‧‧‧Lighting unit

141‧‧‧shade rim

142‧‧‧ curved part

2‧‧‧beam

21‧‧‧Leaked light

22‧‧‧ Reflected light

111‧‧‧heat dissipation structure

112‧‧‧Waterproof Housing

PO‧‧‧ modeling pattern

DO‧‧‧Sculptural decorations

17‧‧‧Light penetration rate enhancement unit

<知知>

1a‧‧‧Tungsten bulb

11a‧‧‧glass shade

12a‧‧‧Tungsten wire

13a‧‧‧Tungsten wire support

14a‧‧‧Support column

15a‧‧‧ lamp holder

16a‧‧‧Electrical metal frame

1b‧‧‧LED spherical lamps

11b‧‧‧ Subject

12b‧‧‧ lamp holder

13b‧‧‧LED lighting module

14b‧‧‧shade

131b‧‧‧LED components

1 is a cross-sectional view showing a conventional tungsten filament bulb; FIG. 2 is a perspective view showing a conventional LED bulb; FIG. 3 is an exploded perspective view showing a first embodiment of a transparent lamp of the present invention; Figure 5 is a side cross-sectional view showing the light-emitting unit, the transparent lamp cover and the efficiency improvement unit; Figure 6 is a side cross-sectional view showing the curved portion of the transparent lamp cover; Figure 7 is a transparent view of the present invention; 3 is a perspective view showing a third embodiment of the transparent lamp of the present invention; FIG. 9 is a perspective view showing a fourth embodiment of the transparent lamp of the present invention; FIG. 11 is a side cross-sectional view showing a light-emitting unit, a transparent lamp cover, and an efficiency improving unit; FIG. 12 is a side cross-sectional view showing a sixth embodiment of the transparent lamp of the present invention; A side cross-sectional view showing a seventh embodiment of the transparent lamp of the present invention.

Claims (17)

A transparent lamp includes: a main body; a driving module disposed in the main body; a lighting module disposed on the main body and electrically connected to the driving module; wherein the lighting The module has a plurality of light-emitting units; a transparent lamp cover is formed by a light guide plate having a first refractive index, and a light incident surface, a light-emitting surface, and a bottom surface of the light guide plate respectively become the transparent light cover a lamp cover lip, an outer wall surface and an inner wall surface; and a light emitting surface of the plurality of light emitting units faces the lamp cover edge; and an efficiency improving unit is disposed on the inner wall surface of the transparent lamp cover And having a second refractive index; wherein the second refractive index is greater than the first refractive index, and the first refractive index is greater than 1; wherein the transparent cover has a plurality of curved portions; and, when the plurality When a light beam emitted by the light emitting unit is incident on the edge of the lamp cover and then optically transmitted inside the transparent lamp cover, the arc portions may destroy the total reflection of the light beam inside the transparent lamp cover. Having one of the light beams leaking light out of the outer wall of the transparent lamp cover; wherein when the light beam transmitted inside the transparent lamp cover is directed toward the efficiency improving unit, the reflected light of one of the light beams is increased from the efficiency The unit is reflected out and is further projected outward through the outer wall of the transparent cover. The transparent lamp of claim 1, wherein the transparent lamp cover can be any one of the following: a spherical lamp cover, a tubular lamp cover, or a modeling lamp cover. The transparent luminaire of claim 1, wherein the outer wall surface of the transparent lampshade is provided with at least one styling pattern. The transparent lamp of claim 1, wherein the transparent lamp cover accommodates a decorative ornament. The transparent luminaire of claim 1, wherein the illuminating module further comprises a circuit substrate for soldering and fixing the plurality of illuminating units. The transparent luminaire of claim 1, wherein the light guide plate can be made of any one of the following: polymethylmethacrylate (PMMA), polycarbonate (Polycarbonate, PC), Silica, or a Cycloolefin copolymer (COC). The transparent lamp of claim 1, wherein the efficiency improving unit is a film, and the film can be made of any one of the following materials: titanium oxide (TiO ₂ ), zirconium oxide (ZrO ₂ ), Zinc oxide (ZnO ₂ ), cerium oxide (Ta ₂ O ₅ ), cerium oxide (TeO ₂ ), molybdenum oxide (MoO ₃ ), cerium oxide (Nb ₂ O ₅ ), a combination of any two of the above, or any of the above two The combination of the above. The transparent luminaire of claim 1, wherein the efficiency improvement unit is a dot array or a plurality of randomly arranged dots, and the material of the dot array and the plurality of randomly arranged dots may be any of the following : titanium oxide (TiO ₂ ), zirconium oxide (ZrO ₂ ), zinc oxide (ZnO ₂ ), lanthanum oxide (Ta ₂ O ₅ ), cerium oxide (TeO ₂ ), molybdenum oxide (MoO ₃ ), cerium oxide (Nb _{2 )} O ₅ ), a combination of any two of the above, or a combination of any two or more of the above. The transparent luminaire of claim 1, wherein the efficiency improving unit is a microstructure including a plurality of V-shaped grooves, and the microstructure is integrally formed with the light guide plate. The transparent luminaire of claim 1, wherein the efficiency improving unit is a film, and the film can be made of any of the following materials: aluminum oxide (Al ₂ O ₃ ), yttrium oxide (HfO _{2 )} And magnesium oxide (MgO), zinc oxide (ZnO), yttrium oxide (Y ₂ O ₃ ), a combination of any two of the above, or a combination of any two or more of the above. The transparent luminaire of claim 1, wherein the efficiency improvement unit is a dot array or a plurality of randomly arranged dots, and the material of the dot array and the plurality of randomly arranged dots may be any of the following : alumina (Al ₂ O ₃ ), cerium oxide (HfO ₂ ), magnesium oxide (MgO), zinc oxide (ZnO), cerium oxide (Y ₂ O ₃ ), a combination of any two of the above, or both The combination of the above. The transparent lamp of claim 1, further comprising at least one mains connector coupled to the main body and electrically connected to the driving module. The transparent luminaire of claim 1, wherein the body further comprises at least one heat dissipation structure. The transparent luminaire of claim 1, wherein the illuminating unit can be any of the following: an LED or an OLED. The transparent lamp of claim 1, wherein the efficiency improving unit is disposed on the outer wall surface of the transparent lamp cover at the same time, so that the transparent lamp becomes a double-sided lighting device. The transparent luminaire of claim 1, further comprising a light transmittance enhancement unit disposed on the outer wall surface of the transparent lamp cover and having a third refractive index; wherein the third refractive index system Less than the second refractive index. The transparent luminaire of claim 16, wherein the light transmittance improving unit can be made of any one of the following: magnesium fluoride (MgF ₂ ), cerium oxide (SiO ₂ ), poly Polydimethylsiloxane (PDMS), a combination of any two of the above, or a combination of any two or more of the above.