JPH01167903A - Light unit - Google Patents

Abstract

PURPOSE:To prevent the misconception of the light owing to an external light and to regulate the hue of the light color by providing two sheets of colored lenses whose color consists of the complementary color to the standard light emitted from a light source, in front of the light source, and mixing and combining uncolored particles to one side lens. CONSTITUTION:In front of a light source 2, two sheets of light lenses 7 and 8 are provided, and their color has the complementary relation to the standard light emitted from the light source 2. To the light lens 8, uncolored fine particles of the mean particle diameter 1-20mu with the light diffusion property such as the titanium white and a necessary coloring agent are mixed and combined. A necessary coloring agent is combined to the light lens 7, and linking to the coloring agent combined in the light lens 8, a permeating light of a specific hue is obtained. Since the external light is not only absorbed to the fine particles in the light lens 8, but also attenuated during the permeation, no misconception is made to see as if the lamp is lighted by an external light, and moreover, the hue of the light main body can be selected adequately by selecting the sort of the coloring agent.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rear combination lamp for a vehicle and other lamps having a fixed light color.

(Prior Art) As a conventional lamp, there is a combination lamp as shown in FIGS. 3 and 4, for example. In the figure, 1 is a combination rung, 2 is a bulb (light source), 3 is a socket, 4 is a housing, and 5 is a lamp lens.The lamp lens 5 is colored by adding a pigment to a resin material in advance. By coloring the lamp lens 5, the light source 2
When the light ray from
(for example, red, orange, etc.) and is displayed externally.

(Problem to be Solved by the Invention) However, in such a conventional lamp (rear combination lamp), the lamp lens 5 receives not only the light from the internal bulb 2 but also the light from the outside, for example, sunlight. In particular, there was no means to prevent sunlight from passing through from the outside, so when sunlight hits the lamp lens during the daytime, even though bulb 2 is not lit. There is a problem in that the lamp lens 5 becomes bright and the bulb 2 appears to be lit, which can easily cause misidentification and is not desirable from a safety standpoint.

In addition, in the conventional lighting equipment (rear combination lamp) as mentioned above, the lens color is red, orange, etc. regardless of the car body color, so it cannot be harmonized with the car body color, and this is a problem in the car body design. It became.

(Means for Solving the Problems) The present invention has been made by focusing on such conventional problems, and it prevents misidentification of lamp lighting due to external light and prevents the hue from being out of harmony with the surroundings. The purpose is to eliminate design obstacles.

According to the present invention, these objects are achieved by providing a lamp equipped with a lamp lens that colors visible light radiated from a light source, in which the lamp lens is composed of two lenses that have a complementary color to the standard light from the light source through additive color synthesis. This is achieved by having a two-piece structure in which achromatic particles are mixed and blended into either one of the colored lenses, and the particle mixed lens is placed on the outside of the lamp.

(Example) The present invention will be described below based on the drawings. Note that in the following, parts similar to those in the prior art will be indicated by the same reference numerals, and redundant explanation will be omitted.

FIG. 1 is a diagram showing an embodiment of the present invention.

In the figure, numerals 7 and 8 are lamp lenses, which are composed of two lenses. Achromatic particles and a coloring agent are mixed and blended into this lamp lens 8. Examples of achromatic particles include non-light-transmitting particles such as titanium white, carbon black, glass powder, nepheline feldspar powder, highly polymerized polymethacrylate particles, cross-linked polymethacrylate particles, and cross-linked polystyrene particles, or average particles with light-diffusing properties. Inorganic/organic transparent powder/particles with a particle size of 1 to 20 μm are used. For example, titanium white is used when the car body color is bright and whitish, and carbon is used when the car body color is dark and blackish. If the color of the vehicle is black, or if the color of the vehicle body is close to the primary color, crosslinked polymethacrylate fine particles or the like can be used. Further, the lamp lenses 7 and 8 are each mixed with a coloring agent which is a complementary color to the standard light by additive color synthesis, and the lamp lens 8 is made to have a color close to the car body color. For example, if the car body color is yellow, the light lens 8 should be made yellow with a light transmittance of about 30 to 85% using titanium white and a coloring agent, and the light lens 7 should be colored orange or reddish-purple. Accordingly, when the bulb 2 is turned on, a predetermined orange or red can be obtained as the target light color.

In addition, highly transparent resins such as polymethyl methacrylate and styrene are used as the resin material for the lamp lenses 7 and 8, and conventional techniques such as the master pellet method are used to blend the particles and colorant. It is carried out. An example of a specific color combination is shown in Table 1, and the transmittance curve of 2 during the experiment is shown in FIG.

(Functions and Effects) When the lamp lens 8 contains titanium white and yellow colorants as achromatic particles, and the lamp lens 7 contains a reddish-purple colorant, the lamp lens 8 as a whole has a whitish tinge. It appears to be a slightly dark yellow color. When sunlight momentarily hits this lighting lens 8, a part of the sunlight is absorbed by the particles mixed in the lighting lens 8, and only the remaining attenuated sunlight passes through the lighting lens 7, and the housing 4 Light lens 81F at the reflective surface 6 of
However, when passing through the lamp lens 8, it is further attenuated and the amount of light emitted to the outside is extremely small. There is no need to worry about it being mistaken as when bulb 2 is lit. Furthermore, when bulb 2 is lit, bulb 2
The light rays from the lamp are attenuated slightly by the particles of the lamp lens 8, but the amount of attenuation is extremely small compared to the case of sunlight, etc., so the entire lamp lens is changed brightly to the target lamp color red. It turns out. In this case, since the particles blended into the lamp lens 8 are achromatic, they are very good without causing any color change to the intended lamp color.

Further, when light-diffusing powder/particles are used as the achromatic particles, the same effect can be achieved due to their light-diffusing effect.

As explained above, the present invention provides a lamp equipped with a lamp lens that colors visible light radiated from an almost colorless light source, in which the lamp lens is composed of two lenses that have a complementary color to the standard light through additive color synthesis. Since this is a two-panel lamp with achromatic particles mixed and blended in one of the colored lenses and the mixed particle lens is placed on the outside of the lamp, there is a wider range of options for selecting the color of the outer lens. This makes it easy to match the color of the main unit to which the lamp is attached, eliminating design obstacles, and a lens with a mixture of achromatic particles is placed on the outside of the two-layer lens, making it easy to prevent external interference. This is effective in preventing misidentification of lamp lighting due to light beams, or in bringing out the unexpected effect of seeing different colors when the lamp is turned on and when it is turned off.

In addition, when the above-mentioned configuration is adopted as a combination lamp for a vehicle, it has the above-mentioned effects, and restrictions on the design of the car body color are greatly relaxed, and the combination lamp can be matched to the car body color. In this way, it is possible to prevent a situation in which the lamp lens becomes bright due to sunlight and cause the lamp to be mistaken for lighting, and it is possible to improve safety when the vehicle is running or stopped.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a combination lamp showing an embodiment of the lighting device of the present invention, Fig. 2 is a transmittance curve diagram of Experiment No. 12, Fig. 3 is a combination lamp as an example of a conventional lamp, and Fig. 4 is a sectional view of a conventional combination lamp taken along a vertical plane including the optical axis. Note that the following symbols in the figure indicate the following parts, respectively. 1: Combination lamp as a lighting device, 2: Bulb (light source), 3: Soget, 4: Housing, 5, 7
, 3: Light lens, 6: Reflective surface. Below are the margins Figure 1 Figure 2 Wavelength (nm') Figure 3 Figure 4

Claims (1)

[Claims] (1) In a lamp equipped with a lamp lens that colors visible light radiated from a light source, the lamp lens is either one of two colored lenses that has a complementary color to the standard light from the light source through additive color synthesis. 1. A lamp having a two-layer structure in which achromatic particles are mixed and blended into the lamp, and a particle mixing lens is arranged on the outside of the lamp.